CN2777746Y - Elliptic multi-screw lamp filaments - Google Patents
Elliptic multi-screw lamp filaments Download PDFInfo
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- CN2777746Y CN2777746Y CN 200520002811 CN200520002811U CN2777746Y CN 2777746 Y CN2777746 Y CN 2777746Y CN 200520002811 CN200520002811 CN 200520002811 CN 200520002811 U CN200520002811 U CN 200520002811U CN 2777746 Y CN2777746 Y CN 2777746Y
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- filament
- tungsten
- helical
- oval
- tungsten filament
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Abstract
The utility model relates to an elliptic multi-screw lamp filament, particularly a lamp filament which is used for the cathode of a fluorescent lamp and an incandescent lamp. The utility model provides the elliptic multi-screw lamp filament which has the advantages of high efficiency of electrothermal conversion, small shielding coefficient, big effective radiating surface, multiple reserves of the electronic powder of the cathode, firm attachment, strong bombardment resistant performance, fast filament preheating, compact structure, good exhaust effect and long service life. The utility model is a tungsten filament which is surrounded into a tungsten coil of which the cross section is in an elliptical helical shape and then surrounded in a helical shape. The tungsten coil of which the cross section is surrounded in the elliptical helical shape is a primary elliptical helical tungsten filament which is surrounded by at least one straight tungsten filament in the elliptical helical shape. The tungsten filament which is surrounded into a tungsten coil of which the cross section is in the elliptical helical shape and then surrounded in the helical shape is a secondary helical tungsten filament which is surrounded by the primary elliptical helical tungsten filament in the helical shape for the second time, or is a helical tungsten filament which is surrounded by the primary elliptical helical tungsten filament in the helical shape for the second time and is surrounded in the helical shape for the third time.
Description
Technical field
The utility model relates to a kind of filament, particularly a kind of filament that is mainly used in cathode fluorescent tube and incandescent lamp.
Background technology
As everyone knows, the life-span of cathode fluorescent tube depends primarily on the ability of the anti-ion bombardment of its filament and the ability of quick excitation electron.When filament can not heat up or heat up the electron deficiency that slowly causes cathode emission when being subjected to ion bombardment to produce fracture of wire to light fluorescent lamp or filament, the life-span of fluorescent lamp is i.e. termination also.So, how to improve the intensification usefulness of anti-bombardment ability of filament and filament, impel the quick excitation electron of negative electrode to light fluorescent tube, become the key factor that improves filament and fluorescent lifetime.
Incandescent lamp is mainly luminous by filament high temperature incandescent state, and the helical structure of filament directly influences the light efficiency and the life-span of lamp, how to make electric energy be converted into visible light most effectively, but also can prolong the life-span of filament, and the helical structure design of filament plays an important role.
Existing monofilament triple-coil filament be single tungsten wire loops around round screw thread filament 6 ', its outward appearance is as shown in Figure 1.Add man-hour, referring to Fig. 2,3, earlier with single tungsten filament 1 ' helically be looped around a molybdenum core silk 2 ' on, form one-level helical coil 3 ', again with one-level helical coil 3 ' be looped around secondary molybdenum heart yearn 4 ' outer, form deuterostrophies coil 5 '.At last through loosing core spiral filament forming machine around the filament 6 that is cut into three grades of helical coils ' (referring to Fig. 1).Choose tungsten filament diameter, spiral coefficient and the core line coefficient of different size according to the power difference of lamp.The type filament is widely adopted because design is fairly simple with manufacturing process.Usually can only satisfy the lower fluorescent lamp of life-span and the instructions for use of low light efficiency incandescent lamp.
Summary of the invention
The purpose of this utility model is to provide a kind of electric heating to transform the usefulness height, it is little to block coefficient, effective radiating surface of tungsten filament is big, many, the adhesion-tight of cathode electronics powder reserves, anti-bombardment ability is strong, filament pre-heating is fast, compact conformation, good exhaust effect, long service life both had been applicable to fluorescent lamp, was applicable to the filament of the ellipsoidal structure of incandescent lamp again, the type filament can be double helix or the triple-coil filament that is turned to ellipsoidal structure by a tungsten filament, also can be double helix or the triple-coil filament that is turned to ellipsoidal structure by two tungsten filaments.
The utility model be a kind of encompass cross section be oval-shaped helical tungsten filamen coil again by helical form around tungsten filament; Described a kind of encompass cross section be oval-shaped helical tungsten filamen coil be meant by at least one straight tungsten filament by oval helical form around helix round tungsten filament, be designated as the oval helical tungsten filament of one-level, described cross section be oval-shaped helical tungsten filamen coil again by helical form around tungsten filament be meant: by the oval helical tungsten filament of one-level again by the helical form secondary around the helical tungsten filamen that forms, be designated as deuterostrophies shape tungsten filament; Or by the oval helical tungsten filament of one-level by the helical form secondary around after carry out again for the third time by helical form around the helical tungsten filamen that forms.
The oval helical tungsten filament of described one-level be by a straight tungsten filament by oval helical form around helix round tungsten filament, the filament of gained should be oval monofilament coiled coil filament or oval monofilament triple-coil filament mutually.
The oval helical tungsten filament of described one-level be by two straight tungsten filaments by oval helical form around helix round tungsten filament, the filament of gained should be oval mariages coiled coil filament or oval mariages triple-coil filament mutually.
For achieving the above object, the utility model can adopt following method manufacturing:
1) oval monofilament coiled coil filament: by a tungsten filament with two thin molybdenum filaments be heart yearn do helical form around, the diameter of these two thin molybdenum filaments can be the same or different, form the oval-shaped helix round of one-level tungsten filament thus, oval-shaped helix round tungsten filament again with thick molybdenum filament be heart yearn do helical form around, by the continuous round screw thread coiled type tungsten filament of the every rhizoid pin of gap spiral filament forming machine coiled, after the wire foot centre position cuts, make oval monofilament coiled coil filament.
2) the oval-shaped helix round of the one-level tungsten filament oval monofilament triple-coil filament: only need above-mentioned 1) is looped around earlier outside the secondary molybdenum heart yearn, form deuterostrophies coiled type tungsten filament, through loosing core spiral filament forming machine, then make oval monofilament triple-coil filament at last around the filament that is cut into three grades of helical coils.
3) oval mariages coiled coil filament: only need) with above-mentioned 1 around two thin molybdenum filaments around a tungsten filament change into two tungsten filaments whiles around, then make oval mariages coiled coil filament by above-mentioned similarity method.
4) oval mariages triple-coil filament: only need) with above-mentioned 2 around two thin molybdenum filaments around a tungsten filament change into two tungsten filaments whiles around, then make oval mariages triple-coil filament by above-mentioned similarity method.
Because the utility model adopts the heart yearn of two molybdenum filaments as tungsten filament, form the spiral helicine ellipsoidal structure of tungsten filament one-level, effective radiating surface of filament is increased, electric heating transforms the usefulness height, even, the adhesion-tight of electronics powder coating, and shortened filament preheating time, good exhaust effect is easier to active electron, improved the anti-ion bombardment performance of filament greatly, help prolonging the useful life of filament, be not only applicable to fluorescent lamp, and be applicable to incandescent lamp.
Description of drawings
Fig. 1 is the existing double-stranded filament schematic appearance of single core monofilament.
Fig. 2 is the promptly existing double-stranded filament one-level of the single core monofilament helical coil cross section enlarged drawing of the A-A section of Fig. 1.
Fig. 3 is that the B-B ring cutting of Fig. 2 launches the promptly existing double-stranded filament deuterostrophies of the single core monofilament coil profile of section.
Fig. 4 is the schematic appearance of the utility model embodiment 1 (the oval monofilament coiled coil filament of twin-core).
Fig. 5 is that the A-A of Fig. 4 is to cutaway view (secondary spiral cutaway view).
Fig. 6 is that the B-B of Fig. 5 is to cutaway view (a spiral cutaway view).
Embodiment
Shown in Fig. 4-6, the utility model embodiment 1 be a cross section be oval-shaped helix round tungsten filament 4 by helical form around tungsten filament 6; Described cross section is the cross section ovalize that oval-shaped helix round is meant helix round tungsten filament 4, and described helix round tungsten filament is single tungsten filament.During manufacturing, is heart yearn by a tungsten filament 1 with two thin molybdenum filaments 2 and 3, make helical form around (two thin molybdenum filaments 2 and 3 diameter can be identical or different) through one spiral filament forming machine, form the oval-shaped helix round of one-level tungsten filament 4 thus, oval-shaped helix round tungsten filament 4 is a heart yearn with a thicker molybdenum wire 5, encompass round screw thread coiled type tungsten filament through two road spiral filament forming machines, after cutting, make oval monofilament coiled coil filament 6.
Similar to Example 1, the oval monofilament coiled coil filament that its difference is to make encompasses round screw thread coiled type tungsten filament through three road spiral filament forming machines again as deuterostrophies coiled type tungsten filament, after cutting, makes oval monofilament triple-coil filament.
Similar to Example 1, its difference is that the monofilament of the oval monofilament coiled coil filament that will make changes mariages into, promptly makes oval mariages coiled coil filament.
Similar to Example 2, its difference is that the monofilament of the oval monofilament triple-coil filament that will make changes mariages into, promptly makes oval mariages triple-coil filament.
Claims (3)
1, oval many coiled filaments, it is characterized in that be a kind of encompass cross section be oval-shaped helical tungsten filamen coil again by helical form around tungsten filament; Described a kind of encompass cross section be oval-shaped helical tungsten filamen coil be meant by at least one straight tungsten filament by oval helical form around helix round tungsten filament, be designated as the oval helical tungsten filament of one-level, described cross section be oval-shaped helical tungsten filamen coil again by helical form around tungsten filament be meant: by the oval helical tungsten filament of one-level again by the helical form secondary around the helical tungsten filamen that forms, be designated as deuterostrophies shape tungsten filament; Or by the oval helical tungsten filament of one-level by the helical form secondary around after carry out again for the third time by helical form around the helical tungsten filamen that forms.
2, the many coiled filaments of ellipse as claimed in claim 1, it is characterized in that the oval helical tungsten filament of described one-level be by a straight tungsten filament by oval helical form around helix round tungsten filament, the filament of gained should be oval monofilament coiled coil filament or oval monofilament triple-coil filament mutually.
3, the many coiled filaments of ellipse as claimed in claim 1, it is characterized in that the oval helical tungsten filament of described one-level be by two straight tungsten filaments by oval helical form around helix round tungsten filament, the filament of gained should be oval mariages coiled coil filament or oval mariages triple-coil filament mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520002811 CN2777746Y (en) | 2005-01-07 | 2005-01-07 | Elliptic multi-screw lamp filaments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520002811 CN2777746Y (en) | 2005-01-07 | 2005-01-07 | Elliptic multi-screw lamp filaments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2777746Y true CN2777746Y (en) | 2006-05-03 |
Family
ID=36745123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520002811 Expired - Lifetime CN2777746Y (en) | 2005-01-07 | 2005-01-07 | Elliptic multi-screw lamp filaments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2777746Y (en) |
-
2005
- 2005-01-07 CN CN 200520002811 patent/CN2777746Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150107 Granted publication date: 20060503 |