CN2293119Y - High power straight tube fluorescent lamp - Google Patents

Abstract

The utility model relates to a high power straight tube fluorescent lamp, belonging to the technical field of the gas discharge lamp. The utility model is composed of a glass pipe, a core column, lamp filaments, fluorescent powders. The glass pipe is filled with mercury or inert gases. The utility model is characterized in that the external diameter of the glass pipe is 14-17 mm, and the length is 550-2000 mm. the inner wall of the glass pipe is coated with the tricolor rare-earth fluorescent powders. The utility model has the advantages of high output power, high optical efficiency, material saving and long service life. The utility model is widely used for lighting in the office, the family, the shop, the school, the enterprise, the army, the factory building, etc.

Description

Large-power straight-tube type fluorescent lamp

The utility model relates to a kind of large-power straight-tube type fluorescent lamp, belongs to the gaseous discharge lamp technical field.

As everyone knows, the diameter of the large-power straight-tube type fluorescent lamp that uses is 38mm now, and common specification has 20～40W.Its tube inner wall coating halogen calcium phosphate fluoressent powder, filament is a double helical form, luminous efficiency is not high.Neoteric " 26 millimeters thin and straight tube type efficient energy-saving fluorescent lamps of Φ ", notification number 1114081A, the straight pipe type fluorescent lamp pipe of a kind of diameter 26mm is disclosed, power is 36W, constitute by glass-tube, stem stem, filament, blanketing gas major part, it is characterized in that containing in the blanketing gas argon gas, krypton gas, nitrogen; Filament is a triple-coil filament, and one taenidium of outermost layer has 5～6 circles, and the glass-tube inwall scribbles the mixed coating of halogen calcium phosphate fluoressent powder and tricolor powder.It is compared with 40W extra heavy pipe footpath fluorescent lamp, and its power is 36W, and power consumption lacks 10%, and light efficiency improves 20%, saves glass-tube material 34%, and the life-span is 7000 hours.This patented technology makes moderate progress than existing 40W fluorescent lamp performance, because halogen calcium phosphate fluoressent powder occupies very big deal, it is thicker that the fluorescent tube diameter still seems, so improve light efficiency, saves material and is restricted.

The purpose of this utility model is the improvement to the fluorescent tube structure of prior art, provides that a kind of material is economized, the light efficiency height, the large-power straight-tube type fluorescent tube that useful life is long again.

The purpose of this utility model is achieved in that a kind of large-power straight-tube type fluorescent lamp, constitute by glass tube, stem stem, filament, fluorescent material, be filled with mercury and inert gas in the glass tube, it is characterized in that the glass tube external diameter is 14～17mm, its length is 550～2000mm, and the glass tube coated inner wall has triphosphor Fluorescent Powder.

Another feature is that filament is the triple helical cable type, is provided with the shading ring that the titanium mercury alloy constitutes around the filament periphery.The inert gas of filling in the glass tube is that krypton gas accounts for 75～85%, and argon gas accounts for 15～25%.

The utility model has the advantages that the glass tube external form is thin and grow that select triphosphor Fluorescent Powder for use, power output is big, light efficiency height, material province, long working life.Be provided with triple helical cable type filament and shading ring, fill krypton, the argon mixture gas of proper proportion, reduce the cathodic sputtering phenomenon, slow down light decay speed, performance is more perfect.

Below in conjunction with accompanying drawing in detail embodiment is described in detail.

Fig. 1 is a large-power straight-tube type fluorescent lamp structure schematic diagram.

The external diameter of glass tube 1 is 14～17mm, and its length is 550～2000mm, and corresponding power of lamp tube is 20～125W.The coated inner wall of glass tube 1 has triphosphor Fluorescent Powder 4, and " rare earth " described in this specification and claims comprises elements scandium, yttrium, lanthanum and lanthanide.It is slower than the light decay speed of halogen calcium phosphate fluoressent powder, comparatively anti-1850A ° of ultraviolet bombardment, and promptly anti-near ultraviolet wire spoke is penetrated, and color rendering is good, and luminous efficiency increases substantially.2 sealings of a stem stem are respectively put at the two ends of glass tube 1, and the seal wire of filament 3 is drawn the fluorescent tube outside by stem stem 2.Filament 3 is selected the triple helical cable type for use, has increased surface area, the corresponding electron emission amount that increased; Also can shorten length simultaneously, its scope is 4～6mm.Like this, filament 3 zooms out to the distance between the glass tube 1, delays the blackout phenomenon of lamp tube ends.Be provided with the shading ring 5 that the titanium mercury alloy constitutes around the periphery of filament, it is wide to be 4～6mm, and it stops the sputter that filament 3 produces when working, and further improves the blackout phenomenon of lamp tube ends.Titanium in the shading ring 5 has the getter effect, and mercury is separated out at work gradually, helps the discharge of fluorescent tube, and the light efficiency of fluorescent tube and useful life are obviously improved.

The inert gas of filling in the glass tube 1 is that krypton gas accounts for 75～85%, argon gas accounts for 15～25%, the low-pressure mercury-vapor that changes into after the mist of this ratio and mercury are heated, under the highfield effect that lamp tube ends adds, increase as the avalanche of ionization, cation is in a large number to cathode motion, then anode motion of anion forms strong gas discharge, produces arc light.The energy that discharge this moment changes into a large amount of ultraviolet rays, excites triphosphor Fluorescent Powder 4 to send strong color of sunshine.

The external diameter of the glass tube 1 of a most preferred embodiment is 16mm, length is 1450mm, its coated inner wall triphosphor Fluorescent Powder 4, triple helical cable type filament 3 is to be made of tungsten and yittrium oxide, its weight ratio is 9: 1, and length is 5mm, and installs oval-shaped titanium mercury alloy shading ring 5 additional, fill in the discharge cavity and have plenty of amalgam, and 80% krypton gas and 20% argon gas.It is 80W that the electric ballast of adapted our company records its power, and lamp current is 0.35A, and luminous flux is 7600lm, and light efficiency reaches 95lm/W, and working life reaches 8000 hours.

Claims (4)

1, a kind of large-power straight-tube type fluorescent lamp, constitute by glass tube, stem stem, filament, fluorescent material, be filled with mercury and inert gas in the glass tube, it is characterized in that described glass tube external diameter is 14～17mm, its length is 550～2000mm, and the glass tube coated inner wall has triphosphor Fluorescent Powder.

2, large-power straight-tube type fluorescent lamp according to claim 1 is characterized in that said filament is the triple helical cable type, is provided with the shading ring that the titanium mercury alloy constitutes around the filament periphery.

3, large-power straight-tube type fluorescent lamp according to claim 1 and 2 is characterized in that the inert gas of filling in the glass tube is that krypton gas accounts for 75～85%, and argon gas accounts for 15～25%.

4, large-power straight-tube type fluorescent lamp according to claim 1 and 2 is characterized in that filling in the said glass tube and has plenty of amalgam, and filament is to be made of tungsten and yittrium oxide, and its weight ratio is 9: 1.