CN201307581Y

CN201307581Y - External electrodeless lamp

Info

Publication number: CN201307581Y
Application number: CNU2008201377772U
Authority: CN
Inventors: 汪宝彤; 陈卫平
Original assignee: NINGGUO HUBANG ELECTRONIC TECHNOLOGY CO LTD
Current assignee: NINGGUO HUBANG ELECTRONIC TECHNOLOGY CO LTD
Priority date: 2008-10-20
Filing date: 2008-10-20
Publication date: 2009-09-09
Anticipated expiration: 2018-10-20

Abstract

The utility model relates to an external electrodeless lamp which comprises a half-bridge inverter periodic circuit module, an integrated circuit module and a starting controller, wherein triodes are respectively connected on two MOS tubes of the half-bridge inverter periodic circuit module for auxiliary acceleration to form an auxiliary acceleration switch circuit of the half-bridge inverter periodic circuit module; low-voltage signals output by the integrated circuit module is changed into driving high-voltage signals through an insulating transformer; a high-voltage end winding of the insulating transformer is assembled at a G electrode and an S electrode of the MOS tube; and HB0808 outputs low-voltage signals for directly controlling the G electrode and the S electrode at the lower end of a half-bridge. The utility model has small temperature rise of the MOS tube, shortens the switching time, and improves the safety performance. A driving transformer and a starting circuit are simple and safe, and have low power consumption. The service life of the whole lamp is prolonged, and the light efficiency is improved.

Description

The electrodeless lamp of external

Technical field

The utility model relates to the electrodeless lamp of external, is specifically related to the improvement of its electronic circuit.

Background technology

Electrodeless lamp belongs to the new-generation energy-saving product of no filament, high light efficiency, long-life, high power factor, can be widely used in the place that family, factory building, office space, road, engineering construction building site, particularly fluorescent tube should not change.Because electrodeless lamp belongs to electrodeless startup and lights, fluorescent tube is not existed because of filament damages or the electronics powder launch, and the sputter of electronics powder makes problem such as fluorescent tube blackout and cause and put in order the phenomenon that lamp is scrapped, put in order the lamp life-span to prolong greatly, and operating frequency exceeds 200KHz, and stroboscopic phenomenon is thoroughly eliminated.But the cost of the circuit design of electrodeless lamp is too high and difficulty is bigger, so when product is market-oriented, be difficult to be accepted by the consumer, also there are many problems in the nonpolar lamp circuit that has at present.

Fig. 1 is the electrical block diagram of electrodeless lamp in the prior art.The operating frequency of the electrodeless lamp of prior art is about 250KHz, and light efficiency is between 50-60Lm/W.Universal component such as several parts of anti-emi filter, bridge rectifier and active power factor corrector to electrodeless lamp in the prior art are no longer described at this, and mainly illustrating needs improved part to existing nonpolar lamp circuit.

Fig. 1 comprises the semi-bridge inversion oscillating circuit that is made of metal-oxide-semiconductor Q1 and Q2; Integrated circuit modules IC1, IC1 are integrated circuit; Power take off L4 and start-up control device C12.Integrated circuit modules IC1 chip wherein is respectively two metal-oxide-semiconductor Q1 and Q2 provides square wave by driving transformer L2, L5, L6, capacitor C 5, resistance R 3 and R4; Power take off L4 is an inductance, and start-up control device C12 is an electric capacity; The start-up circuit of integrated circuit modules IC1 chip and power supply circuits are made up of resistance R 1, three-terminal voltage-stabilizing pipe L7815, capacitor C 11.During work,, make the switching time of metal-oxide-semiconductor Q1 and Q2 circuit longer, cause metal-oxide-semiconductor Q1 and Q2 working temperature higher and breakdown easily owing to there is not the auxiliary acceleration of triode before metal-oxide-semiconductor Q1 and the Q2; Driving transformer L2, the L5 of integrated circuit modules IC1, L6, easy break-down, cost height.The start-up circuit of integrated circuit modules IC1 chip and power supply circuit construction easily make caloric value increase, and cost improves.

Summary of the invention

At the problems referred to above, the purpose of this utility model is that a kind of circuit energy high-speed switch will be provided, and can reduce the temperature of inverter, starts simple and safe, low in energy consumption electrodeless lamp.

In order to achieve the above object, the utility model adopts following technical scheme: the electrodeless lamp of external comprises:

By containing the semi-bridge inversion oscillating circuit module that metal-oxide-semiconductor constitutes;

Integrated circuit modules links to each other with described semi-bridge inversion oscillating circuit module;

Power take off links to each other with described semi-bridge inversion oscillating circuit module;

The start-up control device links to each other with power take off;

High-frequency coupler links to each other with described start-up control device with described power take off, and its output connects electrodeless lamp;

It is characterized in that: on two metal-oxide-semiconductors of described semi-bridge inversion oscillating circuit module, connect triode separately respectively and quicken, constitute the auxiliary acceleration switch circuit of semi-bridge inversion oscillating circuit module with auxiliary; Described integrated circuit modules adopts HB0808 paster integrated circuit modules, and the low voltage signal of its output becomes the driving high-voltage signal by isolating transformer; Isolating transformer high-pressure side winding is connected on the G utmost point and the S utmost point of half-bridge upper end metal-oxide-semiconductor; The low voltage signal of HB0808 output is directly controlled the G utmost point and the S utmost point of half-bridge lower end metal-oxide-semiconductor.

The main devices of described auxiliary acceleration switch circuit is metal-oxide-semiconductor Q3 and Q4, and its circuit constitutes: the grid of metal-oxide-semiconductor Q3 links to each other by diode D9, D10, D13 and triode T1, resistance R 13 ' respectively with source electrode; The grid of metal-oxide-semiconductor Q4 links to each other with triode T2, resistance R 14 ' by diode D11, D14 respectively with source electrode.

Be connected a protective circuit between described start-up control device and described HB0808 paster integrated circuit modules, detecting the power resistor that the start-up control device seals in over the ground, signal is pressed in power taking, and gives described HB0808 paster integrated circuit modules signal feedback.

The supply power mode of described HB0808 paster integrated circuit modules is to adopt the midpoint that is connected with half-bridge lower end metal-oxide-semiconductor from half-bridge upper end metal-oxide-semiconductor, adopts the step-down of capacitance-resistance and the mode of voltage stabilizing didoe voltage stabilizing to power.

The beneficial effects of the utility model: the high-frequency loss of metal-oxide-semiconductor has clear improvement, and temperature rise is little, has shortened switching time, and security performance improves; The simple and safe low-power consumption of driving transformer and start-up circuit has improved whole lamp useful life and light efficiency.

Description of drawings

Further specify the technical solution of the utility model below in conjunction with drawings and Examples.

Fig. 1 is the electrical block diagram of electrodeless lamp in the prior art;

Fig. 2 is a circuit structure schematic block diagram of the present utility model;

Fig. 3 is the part-structure circuit diagram of the utility model embodiment.

Embodiment

Referring to Fig. 2, the utility model comprises: anti-emi filter 101, it can be an EM1 anti-emi filter, AC power is connected to

anti-emi filter

1,3 pin inputs, through its inner secondary common mode and the filtering of one-level differential mode, can disturb high order harmonic component and suppress, thereby reduce serious electromagnetic interference phenomenon between electrical network and this circuit greatly, to reach the national standard that conductibility is disturbed.

6,7 pin of bridge rectifier module 102 link to each other with 4,5 pin of anti-emi filter 101, and carrying out provides DC power supply for follow-up circuit especially semi-bridge inversion oscillating circuit module 106 after the rectification.

10 of active

power factor corrector

103,11 pin, with 8 of bridge rectifier module 102,9 pin link to each other, its inside includes the voltage automatic calibration circuit, also comprise an electrochemical capacitor, can be used as the power supply of subsequent conditioning circuit after this electric capacity charging, active power factor corrector can be cut down the top pulse of electrochemical capacitor charging, and the ripple amplitude of reduction direct voltage, the circuit reactive power is reduced greatly, improve circuit active power, the output power factor of circuit is reached more than 0.99, constant voltage of active power factor corrector 103 outputs, cause has automatic adjustment function, thereby load is no longer changed because of the fluctuation of line voltage.Simultaneously, this electrochemical capacitor provides the secondary filtering effect again.

16 pin of semi-bridge inversion oscillating circuit module 106 link to each other with 21 pin of power take off 109, for subsequent conditioning circuit provides operating voltage.

25,26 pin of HB0808 paster integrated circuit modules 104 link to each other with 28,29 of semi-bridge inversion oscillating circuit module 106, the work of control entire circuit.

20 pin of power take off 109 link to each other with 30 pin of start-up control device 107.

22 pin of power take off 109 link to each other with 23 pin of high-frequency coupler 108.

19 pin of start-up control device 107 link to each other with 13 pin of active

power factor corrector

103 and 24 pin of high-frequency coupler 108, carry out the start-up control of electrodeless lamp.

24 pin of high-frequency coupler 108 link to each other with 13 pin of active power factor corrector 103, and the output of high-frequency coupler connects electrodeless lamp.

15 pin of protective circuit 105 link to each other with 18 pin of start-

up control device

107, and 14 pin of protective circuit 105 detect output signal and feed back to 27 pin of HB0808 paster integrated circuit modules 104.

Embodiment

As shown in Figure 3, HB0808 paster integrated circuit modules is the HB0808 chip, and HB0808 is electrodeless lamp application-specific integrated circuit (ASIC).

Semi-bridge inversion oscillating circuit module comprises two metal-oxide-semiconductors, first metal-oxide-semiconductor is Q3, be connected to the 9th pin of HB0808 paster integrated circuit modules by resistance R 13, R23 and isolating transformer L6, capacitor C 16, second metal-oxide-semiconductor is Q4, be connected to the 11st pin of HB0808 paster integrated circuit modules by resistance R 14, R24, as can be seen from Fig. 3, the grid of metal-oxide-semiconductor Q3 links to each other by diode D9, D10, D13 and triode T1, resistance R 13 ' respectively with source electrode; The grid of metal-oxide-semiconductor Q4 links to each other with triode T2, resistance R 14 ' by diode D11, D14 respectively with source electrode; Constituted the auxiliary acceleration switch circuit of this semi-bridge inversion oscillating circuit module jointly, owing to increased this two triodes, can effectively shorten the switching time of circuit, in operating frequency during greater than the 200KHz left and right sides, the high-frequency loss of metal-oxide-semiconductor has clear improvement, and has avoided the common short-circuit condition of two metal-oxide-semiconductors to occur.

Start-up circuit is by resistance R 35, R38, and diode D12, D2 and capacitor C 12, C20 constitute the more simple and safe and low-power consumption of circuit.

The power supply circuits of HB0808 paster integrated circuit modules are to adopt the midpoint that is connected with half-bridge lower end metal-oxide-semiconductor Q2 from half-bridge upper end metal-oxide-semiconductor Q3, adopt the step-down of capacitance-resistance and the mode of voltage stabilizing didoe voltage stabilizing to power.Power supply circuits comprise capacitor C 14 resistance R 32 and diode D12, D2 capacitor C 12, C20, the more simple and safe and low-power consumption of circuit.

Power take off is an inductance L 8, is connected to the drain electrode of source electrode and the metal-oxide-semiconductor Q3 of metal-oxide-semiconductor Q4, the power output when providing work for subsequent conditioning circuit.

High-frequency coupler is two and half camber magnet ring LN1 and LN2, and the fluorescent tube of electrodeless lamp is clipped in the middle, and is wound with coil on magnet ring LN1 and the LN2, is respectively the 7-20 circle.

The start-up control device is a capacitor C 22, one end links to each other with resistance R 30, the other end links to each other with power take off, high-frequency coupler, provides starting resistor for high-frequency coupler when electrodeless lamp starts, and high-frequency coupler provides operating voltage by semi-bridge inversion oscillating circuit module after the operate as normal.

Protective circuit comprises: resistance R 21, R25, R26; capacitor C 21, diode D15 and resistance R 18; from resistance R 30 sampled output signals; and feed back to the HB0808 chip the 2nd and 4 pins of HB0808 paster integrated circuit modules; if output signal generation overvoltage or when entering capacitive mode; the work of chip meeting halt circuit is with protective circuit.

The utlity model has the life-span long, current harmonic content is low, power factor is high, output frequency is high, electric The plurality of advantages such as source voltage range wide (120V-240V), defencive function are complete.

Claims

1. the electrodeless lamp of external comprises:

By containing the semi-bridge inversion oscillating circuit module that two metal-oxide-semiconductors constitute;

The start-up control device links to each other with power take off;

2, the electrodeless lamp of external according to claim 1, the main devices that it is characterized in that described auxiliary acceleration switch circuit is metal-oxide-semiconductor Q3 and Q4, and its circuit constitutes: the grid of metal-oxide-semiconductor Q3 links to each other by diode D9, D10, D13 and triode T1, resistance R 13 ' respectively with source electrode; The grid of metal-oxide-semiconductor Q4 links to each other with triode T2, resistance R 14 ' by diode D11, D14 respectively with source electrode.

3, the electrodeless lamp of external according to claim 1; it is characterized in that between described start-up control device and described HB0808 paster integrated circuit modules, being connected a protective circuit; detecting the power resistor that the start-up control device seals in over the ground; signal is pressed in power taking, and gives described HB0808 paster integrated circuit modules signal feedback.

4, according to claim 1, the electrodeless lamp of 2 or 3 described externals, the power supply circuits of the described HB0808 paster of its feature integrated circuit modules are to adopt the midpoint that is connected with half-bridge lower end metal-oxide-semiconductor from half-bridge upper end metal-oxide-semiconductor, adopt the step-down of capacitance-resistance and the mode of voltage stabilizing didoe voltage stabilizing to power.