CN208298784U - A kind of better double end taper light bulb of stability - Google Patents

Abstract

The utility model relates to a kind of better double end taper light bulbs of stability, including bulb shell, filament, two filament foots and two metal caps, two metal caps are socketed in the both ends of bulb shell respectively, metal cap has conical end, the outer end of two filament foots passes through the first solder joint respectively and is welded in the conical end of metal cap, filament is mounted in the inner cavity of bulb shell, the both ends of filament pass through the second solder joint respectively and weld with corresponding filament foot inner end, conical end has inner conical surface, the outer end of filament foot is welded on the inner conical surface of conical end by the first solder joint, first solder joint is close to the tip of conical end.By the way that the outer end of filament foot is welded on the inner conical surface of conical end, and the first solder joint is close to the tip of conical end, the solder joint area of filament foot is increased in this way, so that solder joint is stronger, filament foot is prevented to be easy to happen fusing because solder joint is too small, so that this better double end taper light bulb of stability is capable of increasing the solder joint area of filament foot, so that solder joint is stronger.

Description

A kind of better double end taper light bulb of stability

Technical field

The utility model relates to a kind of lighting lamp more particularly to a kind of better double end taper light bulbs of stability.

Background technique

Double end taper light bulb is a kind of light bulb for being frequently used for Automobile lamp holder.Current double end taper light bulb includes outside light bulb Shell, filament and two metal caps, the both ends of filament are equipped with filament foot, have conical end on metal cap, the tip of conical end is opened There is circular hole, generally fixed two metal caps with viscose at the both ends of bulb shell, inserts the conical end tip of two metal caps Be placed in Automobile lamp holder, turn-on power and shine.The combinator of this double end taper light bulb is: filament is first mounted on outside light bulb In the inner cavity of shell, the filament foot at filament both ends need to be calibrated with the circular hole of the conical end on the metal cap for being previously implanted glue, and make lamp Wire foot penetrates extra filament foot severing after circular hole, and the circular hole of the outer end and conical end that make filament foot is in same plane, is The two alignment is smooth；Then, it is sent to baking oven drying, the circular hole of conical end is welded again with scolding tin after to be dried, makes filament The realization that is combined into one of foot and metal cap is electrically connected；It is inserted in two conical end tips in Automobile lamp holder, to contact vapour The conductive sheet on both sides in spot lamp holder makes light bulb turn-on power and shines.However, this filament foot by filament both ends passes through respectively After the circular hole of two conical ends, the mode for making filament foot and metal cap be combined into one with scolding tin welding, so that filament foot and circular hole Solder joint area it is too small be easy to happen fusing, solder joint is insecure.

Summary of the invention

The technical problem to be solved by the present invention is to provide a kind of better double end taper light bulb of stability, this stabilizations The better double end taper light bulb of property is capable of increasing the solder joint area of filament foot, so that solder joint is stronger.

In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is as follows:

A kind of better double end taper light bulb of stability, including bulb shell, filament, two filament foots and two metals Cap, two metal caps are socketed in the both ends of bulb shell respectively, and metal cap has conical end, and the outer end of two filament foots leads to respectively It crosses the first solder joint to be welded in the conical end of metal cap, filament is mounted in the inner cavity of bulb shell, and the both ends of filament lead to respectively The second solder joint is crossed to weld with corresponding filament foot inner end, it is characterized in that: the conical end has an inner conical surface, the filament foot it is outer End is welded on the inner conical surface of conical end by first solder joint, and the first solder joint is close to the tip of conical end.

By the way that the outer end of filament foot to be welded on the inner conical surface of conical end, and the first solder joint is close to the point of conical end Portion increases the weldering of filament foot compared with the circular hole that filament foot passes through conical end tip is carried out welding in the prior art in this way Point area prevents filament foot to be easy to happen fusing because solder joint is too small so that solder joint is stronger, so that this stability is more preferable Double end taper light bulb be capable of increasing the solder joint area of filament foot so that solder joint is stronger.

As a preferred embodiment of the present invention, the outer end of the filament foot is equipped with inclined-plane.Pass through this set, Neng Gouzeng The solder joint area of the outer end of headlight wire foot and the first solder joint.

As a preferred embodiment of the present invention, first solder joint is taper solder joint, and the surrounding of the first solder joint is and institute State inner conical surface close contacting fit.The inner conical surface close contacting fit of taper solder joint and conical end, so that filament foot and metal cap Contact it is more stable, further increase the electric conductivity of light bulb.

Folder as the further preferred embodiment of the utility model, where the inner conical surface and the filament foot between straight line Angle is 45 ° -60 °.According to the difference of the included angle between straight line where inner conical surface and filament foot, the area of the first solder joint also with Change.

As a preferred embodiment of the present invention, the tip of the conical end is that spherical surface closes tip.By this set, Without being welded on the outside of the tip of conical end, production process is reduced, so that the outside of spherical surface closing tip is smooth, plant is arrived It can be good at contacting the conductive sheet on both sides in Automobile lamp holder in Automobile lamp holder.

The utility model compared with prior art, has the advantages that

This better double end taper light bulb of stability by the way that the outer end of filament foot is welded on the inner conical surface of conical end, And the first solder joint, close to the tip of conical end, the solder joint area for increasing filament foot in this way prevents so that solder joint is stronger Filament foot is easy to happen fusing because solder joint is too small, so that the better double end taper light bulb of this stability is capable of increasing filament foot Solder joint area so that solder joint is stronger.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the preferred embodiments of the present invention.

Specific embodiment

It is described further with reference to the accompanying drawing with preferred embodiments of the present invention.

As shown in Figure 1, the better double end taper light bulb of stability in the present embodiment, including bulb shell 1, filament 2, two A filament foot 3 and two metal caps 4, two metal caps 4 are socketed in the both ends of bulb shell 1 respectively, and metal cap 4 has conical end 41, the outer end 31 of two filament foots 3 is welded in the conical end 41 of metal cap 4 by the first solder joint 5 respectively, and filament 2 is mounted on In the inner cavity of bulb shell 1, the both ends of filament 2 pass through the second solder joint 6 respectively and weld with corresponding 3 inner end 32 of filament foot, circular cone End 41 has inner conical surface 42, and the outer end of filament foot 3 is welded on the inner conical surface 42 of conical end 41 by the first solder joint 5, the first weldering Point 5 is close to the tip of conical end 41 43.

The outer end 32 of filament foot 3 is equipped with inclined-plane 33, is capable of increasing the outer end 32 of filament foot 3 and the solder joint face of the first solder joint 5 Product.

First solder joint 5 be taper solder joint, the surrounding of the first solder joint 5 with 42 close contacting fit of inner conical surface so that filament Foot 3 and the contact of metal cap 4 are more stable, further increase the electric conductivity of light bulb.

Angle between 3 place straight line of inner conical surface 42 and filament foot is 45 ° -60 °.According to inner conical surface 42 and 3 institute of filament foot The area of the difference of included angle between straight line, the first solder joint 5 also ensues variation.

The tip 43 of conical end 41 is that spherical surface closing tip subtracts without being welded on the outside of the tip of conical end 41 43 Few production process, so that the outside of spherical surface closing tip is smooth, planting into Automobile lamp holder can be good at contacting Automobile lamp holder The conductive sheet on interior both sides.

In addition, it should be noted that, the specific embodiments described in this specification, each section title etc. can not Together, all equivalent or simple changes done according to structure, feature and principle described in the concept of the patent of the utility model are included in this In the protection scope of utility model patent.Those skilled in the art of the present invention can be to described specific reality Example is applied to do various modifications or additions or be substituted in a similar manner, structure without departing from the utility model or Beyond the scope defined by this claim, it all should belong to the protection range of the utility model.

Claims (5)

1. a kind of better double end taper light bulb of stability, including bulb shell, filament, two filament foots and two metal caps, Two metal caps are socketed in the both ends of bulb shell respectively, and metal cap has conical end, and the outer end of two filament foots passes through respectively First solder joint is welded in the conical end of metal cap, and filament is mounted in the inner cavity of bulb shell, and the both ends of filament pass through respectively Second solder joint is welded with corresponding filament foot inner end, it is characterized in that: the conical end has inner conical surface, the outer end of the filament foot It is welded on the inner conical surface of conical end by first solder joint, the first solder joint is close to the tip of conical end.

2. the better double end taper light bulb of stability as described in claim 1, it is characterized in that: the outer end of the filament foot is equipped with Inclined-plane.

3. the better double end taper light bulb of stability as described in claim 1, it is characterized in that: first solder joint is taper weldering Point, the surrounding of the first solder joint with the inner conical surface close contacting fit.

4. the better double end taper light bulb of stability as described in claim 1, it is characterized in that: the inner conical surface and the filament Angle where foot between straight line is 45 ° -60 °.

5. the better double end taper light bulb of stability as described in claim 1, it is characterized in that: the tip of the conical end is ball Face closure tip.