CN1045361C

CN1045361C - Efficient energy-saving dc fluorescent lamp

Info

Publication number: CN1045361C
Application number: CN95110328A
Authority: CN
Inventors: 余希湖; 孙志楷
Original assignee: Ocean University of Oingdao
Current assignee: Ocean University of Oingdao
Priority date: 1995-01-18
Filing date: 1995-01-18
Publication date: 1999-09-29
Anticipated expiration: 2015-01-18
Also published as: CN1127460A

Abstract

The present invention relates to a high efficiency energy saving fluorescent lamp for family illumination, which is mainly composed of a specially designed direct current fluorescent lamp tube of which the two filament electrodes have no difference in cathodes and anodes, a controller matched with the direct current fluorescent lamp tube and a polarity reversing switch. The fluorescent lamp is a long tube-shaped fluorescent lamp which works in the state of direct current. Two metallic protecting strips (filaments) which can collect electrons are arranged near the filament electrodes and the polarity reversing switch is matched with the two electronic metallic protecting strips (filaments) to ensure that when the switch is circulated once, the polarities of the cathode and the anode of the fluorescent lamp are exchanged once. Therefore, the present invention has the characteristic of elimination of electrophoresis, no stroboflash, no electromagnetic radiation effect, safety, energy saving and long service life and is a novel ideal illuminating light source for families.

Description

Efficient energy-saving dc fluorescent lamp

A kind of efficient energy-saving dc fluorescent lamp that relates to the long tube type.

Existing Chinese patent " a kind of DC fluorescent lamp device of novelty ", the patent No. is 88102003.6, and a kind of fluorescent lamp that is applicable to the railway car illumination is provided.Its structure is that an end is an anode, and the other end is a negative electrode, can not exchange in work polarity in service.This DC fluorescent lamp is the less short-tube type lamp of fluorescent tube length-to-diameter.This patent of invention solves no stroboscopic effect emphatically and is applicable to the place of low-voltage power supply, and the VD of AC power 110V (or alternating current 220V step-down) behind rectifying and wave-filtering that is not suitable for family's use directly lighted fluorescent tube.

The object of the present invention is to provide a class to be applicable to what the family AC power was used, and the fluorescent lamp directly lighted of the VD behind rectifying and wave-filtering, not only energy-efficient no stroboscopic, electromagnetic-radiation-free pollute, and do not have electrophoresis, long service life.

The present invention implements like this: consider that family uses interchange 110V or the VD of 220V behind rectifying and wave-filtering directly to light fluorescent lamp; specialized designs a kind of fluorescent tube (glass-tube) length L and caliber Φ than L/ Φ＞15 and big direct current pressure drop (the long pipe type DC fluorescent lamp pipe (but the direct current change in pressure drop of the fluorescent tube of each specification is very little) of 80V～120V) is arranged; the architectural feature of this DC fluorescent lamp pipe also is its moon; sun two electrodes are a pair of identical in structure K filament and P filament, and protect strip at filament two lead-in wires near respectively being welded with a strip metal on the filament position.In addition, in order further to overcome " electrophoretic effect " and the life-span of improving fluorescent tube that the long pipe type fluorescent tube produces down in working order, also specialized designs a polarity reversing switch, to guarantee every switch once, the anode and cathode sexual intercourse of fluorescent tube is changed once.

The present invention mainly is made up of DC fluorescent lamp pipe 5, suitable with it controller 11 and polarity reversing switch 10 3 parts.As shown in Figure 1, DC fluorescent lamp pipe 5 be by two identical in structure K filaments 1 and P filament 2 be sealed in be pumped into high vacuum and be filled with inert gas and the glass-tube of small amount of mercury 3 in constitute, fluorescent tube length L and caliber Φ than L/ Φ＞15, and scribble rare-earth trichromatic fluorescent powder 4 on glass-tube 3 inwalls, be filled with the krypton-argon mist of air pressure in the glass-tube 3 at 200Pa～300Pa, the krypton-argon gas ratio is determined by the required pressure drop of fluorescent tube, usually krypton gas accounts for 50%, in structure, guarantee on inflation kind and the pressure that fluorescent tube 5 has big pressure drop and DC tube pressure drop to change more among a small circle in, as variation less than ± 5v.The profile of fluorescent tube 5 can be made straight tube shape and various compact shape as required, as two D types, U or Л type etc.

Provide specific embodiments of the invention in detail below in conjunction with accompanying drawing.

Fig. 1. DC fluorescent lamp tubular construction schematic diagram.

Fig. 2. filament and stem stem structural representation.

Fig. 3. the polarity reversing switch electrical schematic diagram.

Fig. 4. the controller circuitry schematic diagram.

Wherein: 1.K filament (f ₂f ₃); 2.P filament (f ₄f ₅); 3. glass-tube; 4. fluorescent material; 5. DC fluorescent lamp pipe; 6. metal coating band; 7. heater lead; 8. blast pipe; 9. stem stem; 10. polarity reversing switch; 11. controller.

The detailed structure of above-mentioned filament 1 and filament 2 as shown in Figure 2; as the stem stem 9 that supports usefulness heater lead 7 and filament are therebetween consolidated frame; also all be welded with L shaped metal coating band 6 on filament one end of heater lead 7 simultaneously, this metal coating band 6 is in the plane substantially with helical heater.Consider be beneficial to collect that filaments sputter comes out easily at the impurity of fluorescent tube 5 two ends blackening etc., the radial dimension that the yardstick of this boundary belt 6 on Width should be a bit larger tham helical heater 1 or 2, the temperature of width is excessive then when negative electrode is made in influence filament.Above-mentioned metal coating band 6 is strip or filaments made from metallic nickel or its alloy.

Guarantee DC fluorescent lamp pipe 5 starters and the DC stabilization state controller 11 of work down, can be electronic starting formula control circuit (as shown in Figure 4) or mechanical delay switch glow starting type control circuit, technical should guarantee with the DC fluorescent lamp pipe 5 of corresponding specification suitable.The electronic starting formula controller of being made up of rectifying and voltage-stabilizing, electronics current stabilization and oscillating circuit (circuit) 11 is specifically by four rectifying tube D ₁～D ₄, multiple tube BG ₁, BG ₂, diode D ₅Voltage-stabiliser tube Z ₁And resistance R ₁, capacitor C ₁Carry out rectifying and voltage-stabilizing, require its output dc voltage to be higher than fluorescent tube pressure drop 10～15V, and improve harmonic current; Transistor BG ₃, light-emitting diode Z ₂And Z ₃And bulb W and resistance R ₂Formed the DC voltage-stabilizing electric current that guarantees DC fluorescent lamp pipe 5; Transistor BG ₄, diode D ₆, light-emitting diode Z ₂, transformer B and capacitor C ₂, C ₃, C ₄And resistance R ₃Form oscillating circuit, to guarantee hot and the fluorescent lamp starter of giving of filament, in case fluorescent tube direct current conducting work, vibration stops voluntarily.Above-mentioned transformer B is provided with elementary winding L ₁With two groups of secondary winding L ₂, L ₃, L ₂Two cutter F being electrically connected with polarity reversing switch 10 of an end A ₂, F ₃Join L ₂The other end and elementary winding L ₁Be in series, and with transistor BG ₄Collector electrode link to each other and winding L ₃Two ends and two cutter F of polarity reversing switch 10 ₄, F ₅Join, wherein F ₄Cutter and transistor BG ₃Collector electrode link to each other.

Above-mentioned polarity reversing switch 10 with controller 11 configurations, come down to four blade three throw switches, structurally should choose knob type or button type usually, structurally class is two-layer about in the of same as knob type respectively is the band switch (drawing among the figure) that two cuttves three are thrown, and clockwise direction coaxial (synchronously) rotates.

In sum, advantage of the present invention is apparent, is characterized in eliminating Electrophoresis, do not have and frequently to dodge and electromagnetic radiation, energy-saving safe, long service life, desk lamp, Wall lamps etc. all can use, and are the desirable light sources of domestic lighting of new generation.

Claims

1. efficient energy-saving dc fluorescent lamp, it is made up of DC fluorescent lamp pipe (5), suitable with it controller (11) and switch (10), it is characterized in that:

A. DC fluorescent lamp pipe (5) be by identical K filament (1) of two structures and P filament (2) be sealed in be pumped into high vacuum and be filled with inert gas and the glass-tube of small amount of mercury (3) in constitute, all be welded with L shaped metal coating band (6) on the glower end of heater lead (7), fluorescent tube length L and caliber than L/ Φ＞15, and scribble rare-earth trichromatic fluorescent powder (4) on glass-tube (3) inwall, be filled with the krypton-argon mist of air pressure in the glass-tube (3) at 200Pa～300Pa, the krypton-argon gas ratio is determined by the required pressure drop of fluorescent tube, usually krypton gas accounts for 50%, to guarantee in structure, inflation make on the pressure DC fluorescent lamp pipe (5) have big pressure drop and DC tube pressure drop should ± 5V more among a small circle in variation;

B. the electronic starting formula controller of forming by rectifying and voltage-stabilizing, electronics current stabilization and oscillating circuit three parts with the suitable controller (11) of DC fluorescent lamp pipe (5) (11), and it is suitable with a polarity reversing switch (10), guarantee every switch once, two electrode K filaments (1) of fluorescent tube (5) and P filament (2) reversal are once;

C. above-mentioned switch is the polarity reversing switch (10) that a four blade three is thrown.

2. fluorescent lamp according to claim 1 is characterized in that above-mentioned metal coating band (6) is strip or the filament made from metallic nickel or its alloy.

3. fluorescent lamp according to claim 1, the profile that it is characterized in that above-mentioned DC fluorescent lamp pipe (5) can be straight pipe type and various compact, as two D types, U type or Л type.