CN2204477Y

CN2204477Y - High-efficiency energy-saving D.C fluorescent lamp

Info

Publication number: CN2204477Y
Application number: CN 94215005
Authority: CN
Inventors: 张志�; 刘强; 温建军
Original assignee: Qinhuangdao photoelectric equipment factory
Current assignee: Qinhuangdao photoelectric equipment factory
Priority date: 1994-06-22
Filing date: 1994-06-22
Publication date: 1995-08-02
Anticipated expiration: 2004-06-22

Abstract

The utility model relates to a high efficiency energy saving D C fluorescent lamp. The utility model is characterized in that a dual transistor push-pull inverter circuit is adopted, and a low voltage DC can be converted to a high level AC to start a fluorescent lamp tube. The utility model has the advantages of high inversion efficiency, little power consumption, rapid start, little possibility of blackening, long service life and high brightness. The utility model is suitable for installing and use on a DC power device such as a solar power generation device, a wind power generation device, etc.

Description

High-efficiency energy-saving D.C fluorescent lamp

The utility model belongs to the fluorescent lamp that a kind of low-voltage DC is reverse into High Level AC Voltage.AC network can not arrival or areas without electricity and field mobile operation situation under, can utilize solar power generation and wind power generation to solve lighting problem.The electric energy of solar power generation and wind power generation generally all is stored in the storage battery, and storage battery is a low-voltage dc power supply.Directly light the low-voltage direct incandescent lamp bulb with it, not only power consumption is big, and luminance difference.For this reason, effectively utilizing low-voltage dc power supply, low-voltage dc power supply is reverse into High Level AC Voltage, reduce power consumption, enlarge the scope of application, improve and prolong the useful life of fluorescent lamp, is an effective approach.

At present, the low-voltage direct fluorescent lamp of a kind of single-transistor inversion of using is sold in existing domestic market.Owing to adopt the inversion form of single-transistor, make it in application process because of inversion efficiency is low, power consumption is big, and waveform is bad, causes lamp tube service life short, has limited the scope of application.

The purpose of this utility model provides a kind of efficient energy-saving dc fluorescent lamp, utilizes the inversion of recommending of pair transistor, improves inversion efficiency, prolongs the useful life of fluorescent lamp.

For achieving the above object, technical solution of the present utility model realizes by following measure: utilize and form the pair transistor inverter circuit by choke circuit, oscillating circuit, booster circuit, in order to low-voltage DC is reverse into alternating current; One termination power positive pole of inductance L 1 and resistance R 1, the emitter of transistor BG1, BG2 connects power cathode, 6, the 7 termination fluorescent tubes of step-up transformer B secondary coil L4.

The utility model is compared with the low-voltage direct fluorescent lamp of the common single-transistor inversion of prior art, has the inversion efficiency height, and the power consumptive province starts soon, and fluorescent tube is difficult for blackout and damages brightness height, characteristics such as long service life.Be equivalent to 60W(220V as the brightness of lighting 9WH type fluorescent tube with this circuit) the alternating current incandescent lamp bulb.

Efficient energy-saving dc fluorescent lamp, can with solar power generation, wind power generation and all have the local supporting of low-voltage dc power supply, do the illumination use.Simultaneously also be nothing electricity, power-shortage area such as peasants and herdsmen family, frontier sentry, military depot, maintenance division, interim building site, reach the desirable lighting that uses in the field mobile operation.

Description of drawings:

Fig. 1 is the efficient energy-saving dc fluorescent lamp structural representation.

Fig. 2 is circuit theory diagrams.

Embodiment is further described in conjunction with the accompanying drawings:

See Fig. 1.The lamp housing 1 that adopts plastics to make is installed in pair transistor inverter circuit plate 2 in the lamp housing 1, and the input end line is connected on the lamp holder 3, and output line is connected on the fluorescent tube.

Fig. 2 has demonstrated circuit design principle figure.The pair transistor push-pull inverter circuit is by choke circuit, the pair transistor push-pull oscillator circuit of transformer feedback, and booster circuit three parts are formed, and low-voltage dc circuit is reverse into High Level AC Voltage.The positive pole of one termination power of inductance L 1 and resistance R 1, the emitter of transistor BG1, BG2 connects the negative pole of power supply, 6, the 7 termination fluorescent tubes of step-up transformer B secondary coil L4.

When energized, because the incomplete symmetry of transistor parameter makes one of them transistor enter conducting state.If transistor BG1 enters conducting state, then flow back to power cathode behind the emitter of electric current one tunnel via R1, R2 and BG1 base stage inflow transistor BG2; Then through 4,2 ends of inductance L 1 and the collector electrode of transistor BG1, emitter flows back to power cathode to another road electric current.According to instantaneous polarity method, this moment, transistor BG1 base stage was a positive polarity, and current collection is negative polarity very.Because 2,5 ends of transformer B coil L2, L3 are end of the same name, then 5 ends of coil L3 are positive polarity, and 1 end is a negative polarity, and this moment, transistor BG2 began to enter conducting state, and 4,3 ends of electric current coils L2 and collector electrode, the emitter of BG2 flow back to power cathode.Because 1 end of coil L3 is a negative polarity, feeds back to transistor BG1, base stage, transistor BG1 begins to enter cut-off state.So repeatedly, transistor BG1, BG2 alternately enter conducting, cut-off state, produce the sine wave of certain frequency on transformer B coil L2.Process transformer B coil L4 boosts the low pressure sine wave and becomes the high pressure sine wave, lights fluorescent tube.

Usually the general low-tension supply of using, its scope is between 3-24V; The power bracket that can light fluorescent tube is between the 5-20W.

Claims

1, efficient energy-saving dc fluorescent lamp is characterized in that by choke circuit, oscillating circuit, and booster circuit is formed the pair transistor inverter circuit, in order to low-voltage DC is reverse into High Level AC Voltage; One termination power positive pole of inductance L 1 and resistance R 1, the emitter of transistor BG1, BG2 connects power cathode, step-up transformer B secondary coil L4,6,7 termination fluorescent tubes.

2, by the described efficient energy-saving dc fluorescent lamp of claim 1, it is characterized in that its scope of application of DC power supply is between 3-24V.

3, by the described efficient energy-saving dc fluorescent lamp of claim 1, it is characterized in that the scope of application of fluorescent tube should be between 5-20W.