CN2280350Y

CN2280350Y - Energy saving lamp tube

Info

Publication number: CN2280350Y
Application number: CN 96243278
Authority: CN
Inventors: 魏明海
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-30
Filing date: 1996-11-30
Publication date: 1998-04-29
Anticipated expiration: 2006-11-30

Abstract

The utility model relates to an energy saving lamp tube, which is suitable for an energy saving fluorescent lamp. The utility model is formed by that four glass tubes disposed according to a square matrix are orderly connected in series to form integration, three orthogonal U-shaped tubes can be formed, and one end of four glass tubes is respectively a circular tube. The utility model is characterized in that the tube wall of the other end of the four glass tubes has a definite plane angle. A lamp tube can realize brake forming in the state of heating through machines, dies and air pressure which can be led into the lamp tube. Flection of the lamp tube is plump, design requirement can be easily achieved, good lamp tube consistency, and high yield.

Description

Energy-saving lamp tube

The SL power saving fluorescent lamp has obtained to use widely.The making of its fluorescent tube is with a glass tube through heating doubling bending once, become two-tube, with the two-tube bending of doubling more once, form profile as shown in Figure 1, it is an integral body that whole fluorescent tube is connected in series successively by four glass tubes of arranging by square formation, constitute three orthogonal U-shaped pipes, four glass tube tube walls are respectively circular, and its cross section as shown in Figure 2.In the existing manufacturing technology of above-mentioned fluorescent tube, single tube doubling bending for the first time can be operated with bending machine, and through machine to crooked position shaping (the mould shaping of single pipe is easy to the demoulding), the fluorescent tube that curves is even, the caliber of sweep and former pipe caliber are similar to.Crooked because the Double Circle pipe demoulding difficulty of for the second time two-tube doubling, and shaping mould of no use is to the crooked position shaping, thereby all be to operate by hand, it is flat that its sweep caliber obviously becomes, and the fluorescent tube consistency that curves is poor, and rate of finished products is low.

The purpose of this utility model is to design a kind of energy-saving lamp tube with new planform, make for the second time two-tube doubling bent part enough mould shapings of energy of fluorescent tube and moulding, and be easy to the demoulding, thereby make the machine operation of the secondary two-tube doubling bending energy of fluorescent tube, the caliber of its sweep is easy to reach designing requirement.

It is an integral body that the utility model is connected in series successively by four glass tubes of arranging by square formation, constitutes three orthogonal U-shaped pipes, and an end of four glass tubes is respectively round tube, and the tube wall of its other end has certain angle respectively.

The tube wall of the other end that further feature of the present utility model is said four glass tubes has 90 ° of angles respectively; By the relative square formation center symmetric arrays respectively of 90 ° of angles on the tube wall of four glass tube other ends of the old arrangement in side, in other words, the angle plane of adjacent two glass tubes is parallel to each other.The tube wall of the other end of said four glass tubes also can have the angle less than 90 ° respectively.Two faces that the tube wall of said four glass tube other ends has certain angle respectively are plane or curved surface.

In the utility model, four tube walls by the other end of the glass tube of square formation arrangement have certain angle respectively, are for the ease of the demoulding.For example be symmetrical in the square formation center and have 90 ° angle respectively, two faces of angle are that mould can outwards withdraw from after plane, the fluorescent tube brake forming.Thereby make the doubling second time bending energy machine operation of fluorescent tube,, when moulding, feed blast simultaneously by the assembling die brake forming, make sweep full, the caliber of its sweep is easy to reach designing requirement, bend the fluorescent tube high conformity that, rate of finished products height.

Fig. 1 is for carrying out the fluorescent tube three-dimensional view that the bending of doubling for the second time forms to energy-saving lamp tube by hand in the prior art;

Fig. 2 is the sectional view of four glass tubes among Fig. 1;

Fig. 3 is a three-dimensional view of the present utility model;

Fig. 4 is the sectional view (A-A cross section among Fig. 3) of four glass tube one ends of the utility model;

Fig. 5 is the sectional view (the B-B cross section among Fig. 3) of four glass tube other ends of the utility model

Further specify below in conjunction with accompanying drawing:

See Fig. 3, Fig. 4, an end of four glass tubes of the present utility model is respectively round tube, with Fig. 1, round tube shown in Figure 2 roughly the same.See Fig. 3, Fig. 5, the tube wall of four glass tubes of the present utility model has certain Plane Angle respectively.90 ° of this angles shown in Fig. 5, the cross sectional shape of every glass tube one end are that one 90 ° right angle and 270 ° circular arc join.Four glass tubes are arranged by square formation as seen from Figure 5, and 90 ° of angles on four glass tube one end tube walls are relative square formation center symmetric arrays respectively.From longitudinal direction, the height the best with tube wall of certain angle can be at the 20-30 millimeter, and along with the increase of this height, angle progressively disappears, and carries out the transition to circular tube wall.See Fig. 3 and Fig. 5, the angle plane of adjacent two glass tubes is parallel to each other.

90 ° of Plane Angle of above-mentioned four glass tubes can heat glass tube, and make moulding by a cover assembling die and bending machine.The structure of said assembling die can be consulted " fluorescent tube brake forming device " utility application that applicant is applied on the same day, and this mold is made of three modules: left module, middle module, right module.Fluorescent tube carries out after the single tube doubling bending first time, through heating again, carry out the prebuckling of two-tube doubling bending for the second time with machine, at this moment, sweep still is softening attitude, see Fig. 3, by machine with middle module position 2 progressive die up from Fig. 3, with left and right sides module respectively from 1,3 positions are progressive die in opposite directions, with a left side, in, right module merges a left side, in, right module cavity shape is designed to as Fig. 3, the two-tube curved shape of the utility model shown in Figure 5, in addition certain air pressure in two-tube, the glass tube of softening attitude promptly is shaped to the die cavity shape, moves back mould through cooling and promptly finishes the brake forming process.From said process as can be known, the utility model fluorescent tube for the second time two steps of bent portions finish: (1), use the machine prebuckling; (2), handle assembling die, and pass to air pressure,, sweep is shaped to adhere to specification (becoming the die cavity shape) the shaping of prebuckling part with machine.

Angle on above-mentioned four glass tube other end tube walls also can be less than 90 °, and for example 85 °, 80 °, 75 ° etc., the square formation center of four glass tubes perhaps also can be not arranging with square formation is a symmetry, and as long as this moment is the shape of change assembling die and die cavity thereof.

Two faces of the certain angle that is had respectively on the tube wall of above-mentioned said four glass tube other ends are plane (as Fig. 1, shown in Figure 5) preferably, also can be curved surface, for example conical surface etc.When being curved surface, should consider to make up shaping and mould is easy to the demoulding.

Claims

1, energy-saving lamp tube, being connected in series successively by four glass tubes of arranging by square formation is an integral body, constitute three orthogonal U-shaped pipes, an end of four glass tubes is respectively round tube, it is characterized in that the tube wall of said four glass tube other ends has certain angle respectively.

2, by the described energy-saving lamp tube of claim 1, it is characterized in that the tube wall of four glass tube other ends has 90 ° of angles respectively.

3,, it is characterized in that the 90 ° of angles relative square formation center symmetric arrays respectively on the tube wall of four glass tube other ends arranging by square formation by claim 1,2 said energy-saving lamp tubes.

4, by the described energy-saving lamp tube of claim 1, the tube wall that it is characterized in that four glass tube other ends has the angle less than 90 ° respectively.

5,, it is characterized in that two faces of the certain angle that had respectively on the tube wall of said four glass tube other ends are the planes by the said energy-saving lamp tube of claim 1.

6,, it is characterized in that two faces of the certain angle that had respectively on the tube wall of said four glass tube other ends are curved surfaces by the said energy-saving lamp tube of claim 1.