CN201927575U

CN201927575U - Main-auxiliary type triple helix filament

Info

Publication number: CN201927575U
Application number: CN2010206719909U
Authority: CN
Inventors: 郭建明; 柳镇华; 茹海桥; 何陪强
Original assignee: HUZHOU TAIJIAN LIGHTING CO Ltd
Current assignee: HUZHOU TAIJIAN LIGHTING CO Ltd
Priority date: 2010-12-21
Filing date: 2010-12-21
Publication date: 2011-08-10
Anticipated expiration: 2020-12-21

Abstract

The utility model discloses a main-auxiliary type triple helix filament, which is characterized by comprising a structure formed by helically winding a filament secondary winding body, wherein the filament secondary winding body adopts a structure formed by helically winding a filament primary winding body (4); the filament primary winding body (4) comprises a main tungsten filament (1) and an auxiliary tungsten filament (3) helically wound on the main tungsten filament (1); and the winding cross section of the auxiliary tungsten filament (3) is in the shape of a triangular, an ellipse or a prism. The filament disclosed by the utility model has the advantages of high electronic powder storage level, and can be electrified and heated quickly, so that the service life of the filament can be prolonged.

Description

The master-slave type three-helix filament

Technical field

The utility model relates to a kind of filament, the filament on particularly a kind of electricity-saving lamp.

Background technology

The life-span of power saving fluorescent lamp negative electrode 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 to light fluorescent lamp or when exhausting attached to the electronics powder on the filament, filament produces fracture of wire because of being subjected to ion bombardment, the life-span of the fluorescent lamp knot that promptly comes to an end.Therefore, how to strengthen the ability of the anti-ion bombardment of filament, improve the intensification usefulness of filament and the storage capacity of raising electronics powder and become the prolongation filament and the key in power saving fluorescent lamp life-span.

At present, the filament of the power saving fluorescent lamp on the market mainly adopts master-slave type three-helix structure filament, and the annular that its auxilliary silk generally is rule twines.When the electronics powder of the filament storage of this structure is too much, can cause the cathode activation difficulty, it is early stage yellow black to make that electricity-saving lamp occurs, and the useful life of fluorescent tube is undesirable.

The utility model content

The purpose of this utility model is, a kind of master-slave type three-helix filament is provided.Its electronics powder reserves are higher, and energising heats up very fast, can prolong the useful life of filament.

The technical solution of the utility model: master-slave type three-helix filament, it is characterized in that: it comprises by the filament secondary twines the body structure that forms of shape coiling in the shape of a spiral, it is that filament once twines the body structure of shape coiling in the shape of a spiral that the filament secondary twines body, filament once twine body comprise main tungsten filament and in the shape of a spiral shape be wound on auxilliary tungsten filament on the main tungsten filament, and the winding cross section of auxilliary tungsten filament is triangle, ellipse or prismatic.

Compared with prior art, the utility model adopts the structure of three helically coilings of main and auxiliary type, and it is triangle that filament once twines the auxilliary tungsten filament winding cross section that is wound in the body on the main tungsten filament, ellipse or prismatic, can increase the storage capacity of cathode electronics powder and adhere to more firm, electronics powder reserves are higher, be easier to the active electron powder, shortened filament preheating time, heating-up time is shorter, improve the bombardment resistance energy of filament greatly, anti-bombardment ability is stronger, avoids turning black in early days phenomenon, the contact area of electronics powder when also having increased the filament heating power greatly, fluorescent tube electronics powder in the exhaust decomposable process is heated evenly, cathode activation is easier, and energising starts faster, can significantly improve the useful life of fluorescent tube.

Description of drawings

Fig. 1 is the structural representation that filament secondary of the present utility model twines body;

Fig. 2 is a filament outline drawing of the present utility model.

Being labeled as in the accompanying drawing: 1-master's tungsten filament, a molybdenum core of 2-silk, 3-assists tungsten filament, and the 4-filament once twines body, 5-secondary molybdenum core silk.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described, but not as the foundation to the utility model restriction.

Embodiment.The master-slave type three-helix filament, as Fig. 1～shown in Figure 2, it comprises by the filament secondary twines the body structure that forms of shape coiling in the shape of a spiral, it is that filament once twines body 4 structure of shape coiling in the shape of a spiral that the filament secondary twines body, filament once twine body 4 comprise main tungsten filament 1 and in the shape of a spiral shape be wound on auxilliary tungsten filament 3 on the main tungsten filament 1, and the winding cross section of auxilliary tungsten filament 3 is triangle, ellipse or prismatic.

Add man-hour, as shown in Figure 1, will assist on the common spiral filament forming machine tungsten filament 3 in the shape of a spiral shape be wound into the abnormity that obtains filament on two thicker molybdenum core silks 2 and the thin slightly main tungsten filament 1 and once twine 4, two great circles of body and a small circular triangularity (also can be directly being wrapped on the molybdenum core silk 2 and main tungsten filament 1 of abnormity) with assisting tungsten filament 3.Then the filament that obtains once being twined body 4 is being wound on the common spiral filament forming machine on the secondary molybdenum core silk 5, obtain the filament secondary and twine body, again the filament secondary is twined body carry out a thermal finalization handle the back on the spiral filament forming machine of loosing core in the shape of a spiral shape be wound on the plug, extract plug out, carry out secondary thermal finalization after length cuts in accordance with regulations and handle, can obtain the utility model after again molybdenum core silk 2 on the filament and secondary molybdenum core silk 5 being dissolved.

Claims

1. master-slave type three-helix filament, it is characterized in that: it comprises by the filament secondary twines the body structure that forms of shape coiling in the shape of a spiral, it is that filament once twines body (4) structure of shape coiling in the shape of a spiral that the filament secondary twines body, filament once twine body (4) comprise main tungsten filament (1) and in the shape of a spiral shape be wound on auxilliary tungsten filament (3) on the main tungsten filament (1), and the winding cross section of auxilliary tungsten filament (3) is triangle, ellipse or prismatic.