JPH10275602A - Vessel and luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure good electrical connection for a long time, enhance productivity, and realize easy work of a high melting point metal by connecting an inner lead having a light emitting source, passing through a base coupling to the end of a translucent airtight container, and melting an outer lead wire introduced from the top of the base by arc to form a round, block-shaped terminal part. SOLUTION: A base 6 connected with a heat resistant adhesive to a crushed sealing part 11 to which a pair of metal foils 4 being connected to inner leads 2L, 2R, and a lead 31 for introducing to the outside is sealed, at one end of a bulb 1 consists of a heat resistant, electrically insulating main body 61 and a shell 62 made of a metal plate. The tip of one outer lead wire 3L which is passed through the center of the main body 61 and introduced from an opening part 67 of a top 65 is melted by high temperature plasma arc, and forms a round, block-shaped terminal part 3T by surface tension. Since only the introducing part having small heat capacity is melted, working time is made short, and surface oxidation is also made small. The tip of the other outer lead wire 3R is connected to the side surface of the shell 62 by welding, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a terminal portion formed on a top of a base joined to an end of a light-transmitting airtight container (glass bulb) of a bulb.

[0002]

2. Description of the Related Art In bulbs such as light bulbs and fluorescent lamps,
A lead wire connected to a light source such as a filament or an electrode and led out of the bulb is connected to a base joined to an end of the bulb to supply power to the light source.

In a tube using a base such as an E-type (screw-in type), the connection between the lead wire and the shell (side) or eyelet (top) of the base is made of a low-temperature brazing material such as solder or silver. High-temperature brazing materials such as brazing are used.

However, when using these brazing materials,
A flux is required, and if the flux remains after brazing, the metal part of the die may be corroded. For this reason, post-processing such as washing was required after brazing. In addition, some brazing materials include pollutants in the composition material.

Therefore, instead of the connection of the lead wire by brazing, the connection of the lead wire to the eyelet (top) by arc welding is disclosed in, for example, Japanese Patent Laid-Open No. 62-7 / 1987.
It is described and known in JP-A No. 3552, JP-A-6-275244 and JP-A-8-138631, and is also implemented as a product.

According to the means described in these publications,
The lead wire can be connected to the metal body forming the eyelet (top) by arc welding, and the metal body does not corrode and the like, and stable conduction and the holding of the valve can be maintained for a long time until the life of the bulb.

[0007]

In this arc welding, the lead wire and the eyelet are melted, and the contact portions are mixed and joined. However, the lead wire side has a small heat capacity and is relatively easy to melt, but there is a problem that a high welding power (output) is required to melt the eyelet side having a larger heat capacity than the lead wire.

In recent years, tube components have been modified in this tube field in order to reduce the cost and resources of products. In a die such as an E-type (screw-in type) in which a shell and an eyelet are separated from each other through an insulator such as ceramics or glass, most of the eyelet terminals at the top of the die (top) are terminals. It is not directly in contact with the socket terminals, it is simply a connection with the lead wire, and the socket terminals are usually protruding from the eyelet. Lead wires (in the case of welding) and brazing materials (in the case of soldering or silver brazing) ) Functions as a contact portion.

Therefore, an attempt has been made to omit the eyelet terminal which is a conventional base component. This is because an insulator that separates the eyelet (top) from the shell (side) is provided with a material that functions as a conventional top terminal, so that the eyelet that has been formed by pressing or the like is not required and the base is manufactured. The aim is to reduce the cost of the base by making it easier.

On the other hand, it is known that the lead wire led out from the top of the base of the bulb is blown to form an expanded portion, and this expanded portion is press-fitted into a hole outlet of the top to serve as a terminal.
277.

[0011] However, what is described in this publication is that the lead wire led out from the top of the mouthpiece is burned off by a burner, and the swelled portion formed by rounding the portion melted by this burning is used as a terminal portion. is there. Since the formation of the bulging portion requires a high temperature, a burner is used, so that the surface of the terminal portion is easily oxidized, and the electrical connection with the socket terminal portion may become unstable. Further, it is difficult to locally heat the burner, and the buried portion of the lead wire and the electrical insulator portion of the base, which should not be heated, may be heated to cause cracks in these portions.

Although it is conceivable to use a reducing burner to reduce the oxidation at the time of fusing, an oxidized portion accompanying the combustion reaction remains in the vicinity of the reducing flame. The publication also states that it is desirable to bake and round in a reducing gas stream, or to round and then reduce with a reducing flame, but melting or cooling the metal with a burner requires the required time. However, there is a problem that the burner adjustment is difficult and the productivity is reduced.

An object of the present invention is to provide a bulb having a terminal portion formed on an insulator or a metal body by melting a lead wire on the base top side using an arc, and a lighting fixture equipped with the bulb. Aim.

[0014]

According to the first aspect of the present invention, there is provided a bulb comprising: a light-transmitting airtight container; an internal lead sealed in the container; a light emitting source provided in the internal lead; The base joined to the end, the external lead wire connected to the internal lead, inserted through the base and led out from the top of the base, and a circle formed by melting the external lead wire at the top of the base by an arc. And a block-shaped terminal portion.

At least the external lead wire portion having a small heat capacity led out from the top of the top of the mouthpiece is melted by plasma using an arc welding machine or the like, and a portion rounded and rounded by surface tension is used as a terminal portion. Therefore, the terminal portion formed by the external lead wire and the top of the base need not be welded.

This operation melts only the lead portion of the external lead wire having a small heat capacity in a high-temperature plasma arc, so that the melting can be performed in a very short time, and the degree of oxidation of the surface is reduced. Processing time can also be extremely short. As described above, the terminal formed by the external lead wire and the top of the base may not be welded, or may be welded.

The application of the present invention is not limited to the halogen lamp for floodlight, and the temperature between the base and the external lead wire is conventionally increased by welding or silver solder. It can also be applied to a tube using a high melting point hard solder or a lamp using a relatively low melting point soft solder such as solder for a bulb made of a soft glass such as a fluorescent lamp or a general-purpose bulb. The sealing portion is not limited to the crushing sealing portion, but may be a sealing portion formed by contracting a valve, a sealing portion using a stem such as a flare or a button, or a metal portion such as a molybdenum foil. Not limited to foil, a linear sealing member may be used.

In the present invention, the light-emitting source may be a coiled filament in the case of a light bulb, an electrode in the case of a discharge lamp, or an inner tube in the case of a double tube. The internal lead refers to a metal plate frame or the like that holds an internal lead wire, an inner tube, and the like and forms a conductor. The translucent airtight container refers to a bulb made of hard glass or soft glass such as quartz glass or ceramics such as an HID lamp.

A bulb according to a second aspect of the present invention is joined to a light-transmitting airtight container, an internal lead sealed in the container, a light emitting source provided on the internal lead, and an end of the container. A base, an external lead wire connected to an inner lead, inserted through the base and led out of the insulator main body of the top of the base, and a circular block formed by melting the external lead wire by an arc at the top of the base. And a terminal portion.

A block-shaped terminal portion is formed directly on a heat-resistant electrical insulator such as ceramics or glass to achieve the same effect as described in the first aspect.

The present invention can also be applied to a bulb or an HID lamp using another E-type or EZ-type base. The bulb according to claim 3 of the present invention comprises a light-transmitting airtight container, an internal lead sealed in the container, a light emitting source provided on the internal lead, and a terminal pin joined to an end of the container. A base, an external lead wire connected to the internal lead, inserted through the terminal pin, and led out from the top of the pin; and a circular terminal formed by melting the external lead wire by an arc at the top of the terminal pin. And a unit.

A block-shaped terminal portion is formed on the tip of the terminal pin made of a conductive metal, and the same operation as that of the first aspect is achieved.

In this case, the top of the top of the base is the tip of the pin, and since the diameter is large and the heat capacity is large as compared with the external lead wire, melting of the pin portion can be prevented by adjusting the controller of the welding machine. In this case, it is permissible for the molten mass of the external lead wire to be welded to the pin. However, it is not preferable that the circular terminal portion becomes larger than the outer diameter of the pin because it cannot enter the pin insertion hole of the socket. The present invention can also be applied to a compact fluorescent lamp using a GX or GY base.

In the tube according to a fourth aspect of the present invention, the circular terminal portion has a diameter larger than the diameter of the opening of the lead wire insertion hole of the top insulator main body of the base or the diameter of the opening of the terminal pin. It is characterized by the following.

If the block-shaped terminal part is submerged in the opening, electrical connection with other terminals may not be possible, and the terminal part may be an oval instead of a perfect circle, but is larger than the hole diameter of the opening. What is necessary is just to have a part and protrude above an opening part.

The bulb according to the fifth aspect of the present invention uses a solder or a silver braze which falls in the category of hard braze, wherein the terminal is made of a metal or an alloy having a melting point of 500 ° C. or more. In this case, the connection portion metal caused by the flux and the material in the brazing composition is not corroded, and the connection operation is facilitated. In addition, there is no possibility that the electric connection is unstable when the lamp is melted when the lamp is lit.

[0027] A tube according to a sixth aspect of the present invention is characterized in that the material of the terminal portion is mainly composed of at least one of nickel, copper, iron, molybdenum and tungsten.

By using the above-described material as a main component in the portion of the external lead wire where the terminal portion is formed, the same effect as described in the fifth aspect can be obtained. Especially in the case of a high-temperature tube
A material made of a high melting point metal material such as molybdenum or tungsten can be used.

Further, as the material suitable for the terminal portion, the following metals may be used alone or as an alloy composition.

0.5-99.5% by weight of nickel, 0.1% of copper.
5-99.5% by weight alloy.

45 to 55% by weight of zinc, 0 to 10% of nickel
Alloy containing less than 1% by weight of impurities and less than 1% by weight of impurities.

An alloy containing 38 to 42% by weight of zinc, 1% by weight or less of impurities, and the balance of copper.

Alloy containing 4 to 8% by weight of phosphorus, 0 to 1% by weight of tin, and the balance of copper.

Alloy containing 0 to 8% by weight of phosphorus, 5 to 80% by weight of silver, 0 to 25% by weight of zinc, 0 to 18% by weight of cadmium, 1% by weight or less of impurities and the balance of copper.

Manganese 0-0.5% by weight, tin 0-1.
5% by weight, nickel 0-10% by weight, silicon 0-0.1
5% by weight, 38-42% by weight of zinc, 1% by weight or less of impurities, alloy containing copper as the balance.

Further, since the terminal portion is formed by an external lead wire portion protruding from the base, only the protruding portion needs to have at least the material composition described above. The material of other portions constituting the wire, for example, the fuse wire portion is not limited.

A tube according to a seventh aspect of the present invention is characterized in that the terminal portion is made of a metal or an alloy made of a material forming an external lead wire and a material forming an earth member of an arc melting device. I do.

When the external lead wire is melted, the ground wire contacted near the base of the external lead wire also receives plasma and is melted. For example, as shown in the embodiment, when a copper ground wire is used for a nickel external lead wire, since the copper ground wire has a lower melting point, it melts first and in a short time, and nickel melts later. When fused, the melting point can be lowered and a circular block made of an alloy of nickel and copper can be formed in a short time.

As the material of the ground wire, copper, nickel, molybdenum or the like having a melting point equal to or lower than that of the external lead wire forming the terminal portion is suitable.

According to an eighth aspect of the present invention, there is provided a lighting fixture comprising: a fixture main body; a socket provided on the fixture main body; and a tube according to any one of the above items 1 to 7 mounted on the socket. It is characterized by having.

The light bulb according to any one of claims 1 to 7 mounted on the socket of the appliance body has the same effect as that described in any one of claims 1 to 7. .

[0042]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIG. Fig. 1 is a rating 1 for a small projector
It is a partial sectional front view of the halogen lamp L1 of 10V65W.

Reference numeral 1 denotes a translucent airtight container, for example, a tubular valve made of quartz glass. Reference numeral 11 denotes a crushable sealing portion sealing one end of the valve 1. The inside of the crushing sealing portion 11 is made of tungsten. A pair of metal foils 4 and 4 made of molybdenum or the like to which the lead wires 2L and 2R and external lead wires 31 and 31 made of molybdenum or the like are connected are hermetically sealed. Reference numeral 12 denotes an exhaust pipe formed at the other end of the valve 1.

The internal lead wires 2L, 2L in the valve 1
A coil-shaped filament 5 wound with a tungsten wire is connected between R, and is disposed along the central axis of the bulb 1. In the figure, reference numeral 25 denotes an anchor for holding the intermediate portion of the filament 5, and reference numeral 26 denotes the internal lead wires 2L, 2R and the anchor 2.
This is a bead with 6 planted.

In the valve 1, a small amount of CH ₂ Br ₂
And CH ₃ Br halide and a small amount of Kr (krypton) and N ₂ (nitrogen) and the combined gas is ambient temperature, such as (2
(5 ° C.) at about 1.5 × 10 ⁵ Pa (Pascal).

Reference numeral 6 denotes a crush sealing portion 11 at the end of the valve 1.
An E11 type base joined to a cylindrical main body 61 made of heat-resistant and electrically insulating ceramics such as steatite or cordierite, and a peripheral body twisted around the base 11 with a heat-resistant adhesive 71 made of silica or alumina. And a metal plate shell 62 having a screw portion 63 for insertion.

The main body 61 of the base 6 has cylindrical portions 61a and 61b having two large and small outer portions, and a shell 62 is fixed to the small-diameter cylindrical portion 61b by means such as screwing or caulking. A concave portion 64 for receiving and fixing the crushed sealing portion 11 is formed inside the large-diameter cylindrical portion 61a.
An insertion hole 66 for the external lead wire 3 is formed up to the top 65 at the top of the small-diameter portion 61b so as to be interposed with the concave portion 64.

Each of the external lead wires 3L and 3R led out from the crushable sealing portion 11 is formed of a molybdenum wire 31 connected to the metal foil 4 and a nickel wire having a fuse wire 33 made of monel metal or constantan interposed in the middle. The first and second lead wires 32 and 34 are connected to each other. (Note that the external lead wires 3L and 3R may be a single wire or may be configured by connecting a plurality of types of wires. In the above description, the fuse wire 33 is interposed between one of the external lead wires 3L ( Or 3R) alone.) One external lead wire 3L is inserted through an insertion hole 66 at the center of the main body 61 of the base 6, and the second lead wire 34 is opened at the top 65 of the top. The terminal portion 3T is led out of the portion 67, and its tip is melted by the arc to form a circular block-shaped terminal portion 3T. The other lead wire 3R is connected to the main body 61.
The second lead wire 34 is led out of the main body 61 through a through-hole 68 formed in the vicinity of the large- and small-diameter cylindrical portions 61a, 61b. They are connected by means such as welding or brazing.

Also, in the peripheral portion of the outer surface of the valve 1,
A visible light transmitting infrared reflecting film (not shown) is formed. This infrared reflecting film is formed by alternately repeating TiO ₂ (titanium dioxide) for forming a high refractive index layer film and SiO ₂ (silicon dioxide) for forming a low refractive index layer film on the glass surface of the bulb 1 and laminating a predetermined layer. Made of a multilayer optical interference film.

Then, in the halogen lamp L1 having the above configuration, the processing of the external lead wires 3L and 3R led out from the base 6 is performed as shown in FIGS. FIG.
Is an explanatory view of a processing device for the external lead wire 3L, FIG.
FIG. 4B is an explanatory diagram showing the processing procedure, and FIG. 4 is a graph showing the current and time of a welding machine used as a main processing device in comparison. In the figure, the same parts as those in the first embodiment of FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted.

In FIG. 2, 81 is a plasma arc welding machine, 82 is an argon gas cylinder, 83 is a plasma torch, 84 is an electrode, 85 is a ground wire made of copper wire, 86 is a holder for the bulb L1, and welding machine 81 is a discharger. It has a current controller and an argon gas supply regulator.

After the crushed sealing portion 11 of the valve 1 whose sealing and evacuation has been completed is accommodated in the concave portion 64 of the base 6, the heat-resistant adhesive 71 is inserted into the gap between the two.
Alternatively, a heat-resistant adhesive 71 is attached to the inside of the crushable sealing portion 11 or the concave portion 64, and the crushable sealing portion 11 is
4, and the leading ends of the second lead wires 34, 34 are led out of the base 6 through the insertion holes 66 and the through holes 68, respectively, in a state where the external lead wires 3L, 3R do not contact each other.

Then, after the base 6 is heated to solidify the heat-resistant adhesive 71 to complete the joining of the two, first, as shown in FIGS. , The bulb 86 is held by the holder 86.
Next, the electrode 8 of the torch 83 is placed near the tip of the external lead wire 3L (34) extending from the top 65 of the top of the base 6.
4 and the ground wire 85 is extended and brought into contact with a portion near the top 65. Next, the arc welding machine 81
To discharge from the electrode 84 toward the tip of the external lead wire 3L (34), the high-temperature plasma melts the external lead wire 3L (34) from the tip to the opening 67, and the molten mass shrinks due to surface tension. It becomes round while it is round.

Further, this working process will be described with reference to FIG. 4. An external lead wire projecting from the top 65 by injecting argon gas from a torch 83 facing the tip of the external lead wire 3L (34) is shown. An argon atmosphere is set around 3L (34). (FIG. 4... A) Next, a current is supplied from the welding machine 81. (FIG. 4... B) Next, a predetermined current is applied from the welding machine 81 to melt the external lead wire 3L (34). (FIG. 4... C) Next, when the external lead wire 3L (34) is melted, the current from the welding machine 81 is reduced, and then the current is cut off. (Figure 4 ...
D) Next, if the molten portion (3T) is cooled in an argon atmosphere, a round terminal portion 3T is formed. (FIG. 4... E) The series of processing steps (FIG. 4... A to E) are automatically performed by a controller in the welding machine 81. Further, in the above, by helically injecting the argon gas injected from the tip of the torch 83, the molten portion (3T) of the external lead wire 3L (34) can be stably covered and shielded from the outside air.

When the external lead wire 3L (34) is melted, the ground wire 85 contacted near the base of the external lead wire 3L (34) may receive plasma and melt. Then, for example, as described above, the copper ground wire 85 is connected to the nickel external lead wire 3L (34).
Is used, the melting point of the copper earth wire 85 is lower, so that it melts first and in a short time, and when fused with nickel that is melted later, the melting point is lowered and the nickel-copper alloy is reduced in a short time. A circular block (3T) can be formed.

Then, a circular block (3T) composed of the lead wire 3L (34) itself protruding from the top 65 of the insulator main body 61 made of the ceramics of the base 6 is:
Even if there is no oxide film on the outer surface, it is very light, and good electrical connection is made as the contact-type electrical connection terminal portion 3T without any problem in conductivity. In addition, since the external lead wire 3L (34) at least at the portion derived from the top 65 of the base 6 may be melted, the heat capacity is small, and the output of the arc generator such as an arc welding machine is low and the terminal portion 3T is formed. Is possible.

Incidentally, in the halogen lamp L1 using the E11 type base 6 having a rating of 110V65W, an external lead wire 3L (34) made of nickel having an outer diameter of about 0.7 mm protrudes from the top 65 of the base 6 by about 5 mm. As a result, a circular block-shaped terminal portion 3T having a diameter of about 1.8 mm was formed by the arc. Also, the time required for forming the round block-shaped terminal portion 3T (FIGS. 4A to E) was about 5 to 6 seconds, so that the working time for the molding by the burner could be reduced to about half, and the surface was oxidized. Was also mild.

The distal end of the external lead wire 3R led out to the shell 62 side of the base 6 is connected to the side surface of the shell 62 by ordinary welding to complete the bulb L1.

In the halogen lamp L1 having such a configuration, when the shell 62 of the base 6 is screwed into the screw-in type socket, the terminal portion 3T has a rectangular plate-like shape or a coil-shaped elastic socket. Can be lit by contacting the terminal at the back of the camera. The filament 5 arranged along the central axis of the bulb 1 generates heat and emits a large amount of infrared light together with visible light. Most of the visible light emitted from the filament 5 is transmitted through the bulb 1 and the visible light transmitting infrared ray. The light passes through a reflective film (not shown) and is emitted to the outside of the bulb 1. Further, the infrared rays emitted from the filament 5 are reflected by the visible light transmitting infrared reflecting film and returned to the filament 5,
(The emission of the infrared rays from the filament 5 and the reflection of the infrared rays are repeated.) The filament 5 is reheated to increase the light emission. As a result, the visible light emission from the filament 5 increases, and the luminous efficiency is increased. Can be improved.

In the halogen lamp L1, the temperature of the bulb 1 and the base 6 rises considerably due to lighting that causes a halogen cycle. However, no deformation or surface oxidation or the like occurs in the terminal portion 3T. Light and does not impair electrical connection until end of life of bulb L1.

It should be noted that the external lead wire 3L (34) is not melted to the top 65 surface of the insulator 6 of the base 6 so that the circular terminal portion 3T does not come into contact with the top 65 surface and is electrically floated. There is no problem in connection (of course, terminal 3T
Cannot reach the shell 32. 3), when there is a gap between the terminal block 3T and the surface of the top 65 and the appearance is unsightly, the jig 72 shown in FIG.
To press the terminal portion 3T to use the external lead wire 3L (34).
The terminal may be returned to the insertion hole 66 and the terminal 3T may be moved to the top 65 surface.

The terminal block 3T may have an oval shape instead of a perfect circle, but may have a portion larger than the diameter of the opening 67, and may be located above the opening 67 that does not sink into the opening 67. What is necessary is just to be what protruded.

FIGS. 5 to 7 show the second to fourth embodiments of the present invention. In the drawings, the same parts as those in FIGS. 1 to 3 are denoted by the same reference numerals and the description thereof is omitted. I do.

FIG. 5 shows a G type or GY according to the second embodiment.
In a halogen bulb or HID (high pressure discharge lamp) L2 using an X-type base 6, the base 6 is joined to a crushable sealing portion 11 at the end of the bulb 1 made of quartz or hard glass via a heat-resistant adhesive. . The base 6 includes a main body 61 having a shape of a rectangular cylinder with a bottom and made of ceramic, and a pair of pins 69, 69 made of nickel or the like fixed to the main body 61. 11 are bonded via an adhesive 71 and external lead wires 3L, 3L,
The 3R is inserted into the pins 69, 69 to form round terminal portions 3T, 3T at the tips.

The terminal portion 3T of the pin 69 can be formed by the same method as that shown in FIGS. 2 to 4, but the ground wire 85 is brought into contact with the conductive pin 69 to generate an arc. You may.

In this case, the top 65 of the top of the base 6 is used.
Is the tip of the pin 69, which can be prevented from melting at the portion of the pin 69 by adjusting the controller of the welding machine 81 because it has a large diameter and a large heat capacity as compared with the external lead wires 3L and 3R. In this case, it is permissible for the molten mass of the external lead wires 3L and 3R to be welded to the pin 69. However, the circular terminal portion 3T becomes larger than the outer diameter of the pin 69 because it cannot enter the pin insertion hole of the socket. It is not preferable.

Further, this structure is a GX type or GY type base 6.
Can also be applied to a compact fluorescent lamp L3 using.

FIG. 6 shows a fluorescent lamp L3 using a G-type base 6 according to the third embodiment.
As shown in FIG. 5, brass pins 69, 69 are implanted in a dish-shaped shell 62 made of metal or synthetic resin.

In the case of the lamp L3, similarly to the lamp of FIG. 5, the ends of the external lead wires 3L, 3R protruding from the pins 69, 69 are rounded with an arc to form a terminal portion 3T. It has the same effect.

FIG. 7 is a diagram showing E2 showing the fourth embodiment.
LW10 of general gas-filled bulb L4 using 6-type base 6
0V57WJ.

In the bulb L4, a sealing portion 11 with the flare stem 15 is formed at an end of the bulb 60 of the PS60 type, and the base 26 of the E26 type is joined to the sealing portion 11 via an adhesive 71. I have. The base 6 is composed of a shell 62 having a screw portion 63 engraved around aluminum or brass, and an eyelet 69a provided at the top via an insulator 61a such as glass. Further, the stem 15 is provided with two lead wires 3, 3. The lead wire 3 has an inner diameter of about 0.5 mm and an inner lead 2L (2R) made of nickel wire having a length of about 35 mm. A sealing wire 41 having an outer diameter of about 0.25 mm and a length of about 12 mm made of dumet wire, a fuse wire 33 having an outer diameter of about 0.2 mm and a monel metal having a length of about 15 mm, and an outer diameter of about 0.3 mm; Length about 30m
The second lead wire 34 made of a copper wire of m is welded in series. (Note that both lead wires 3,
It is not necessary to connect the fuse wire 33 to the lead wire 3, and the one lead wire 3 may be a three-part product in which the lead wire 34 made of copper wire is directly welded to the sealing wire 41 made of dumet wire. Good. ) And, between the internal lead wires 2L, 2R, which are sealed inside the bulb 1 and the sealing wires 41, 41 are hermetically sealed to the crushed sealing portion 16 of the stem 15, Has a coiled filament 5 connected thereto. Also, the lead wire 3 constituting the external lead wire
Reference numerals 4 and 34 denote shells 62 and eyelets 6 of the base 6.
It is led out from 9a and connected to shell 62 and eyelet 69a.

Further, a gas obtained by mixing Ar (argon) and N ₂ (nitrogen) in the valve 1 is at room temperature (25 ° C.).
About 8.65 × 10 ⁵ Pa (Pascal).

The connection of the base 6 to the eyelet 69a side of the bulb L4 is performed by arc welding in the same manner as described with reference to FIG. 2, but when the copper lead 3 protruding to the outside is melted, The ground wire 85 to be brought into contact with the base is also a copper wire. By using copper for both, copper has a relatively low melting point, so that it can be melted in a short time, and a circular block serving as the terminal 3T can be easily formed on the eyelet 69a surface. Can be formed. At this time, the circular block constituting the terminal portion 3T protruding from the surface of the eyelet 69a directly contacts the terminal of the socket.
It does not matter whether or not it is welded to the surface of 9a.

The eyelet 69 at the top of the base 6
The circular block composed of the lead wire 34 formed on the a-plane is
Even if there is no oxide film on the outer surface, it is very light, and good electrical connection with the socket can be made as the contact-type electric connection terminal portion 3T without any problem in conductivity. In addition, fuse line 3
Numeral 3 serves to protect the other electric circuits by fusing when an overcurrent flows, such as when the filament 5 is broken.

FIG. 8 shows a lighting fixture 9 according to a fifth embodiment of the present invention. In FIG. 8, reference numeral 91 denotes a base attached to a ceiling surface or the like, 92 denotes a support pole, 93 denotes a universal joint rotatably attached to the tip of the pole 92, and 94 denotes an instrument provided with the universal joint. The main body 95 is a reflector provided in the front opening of the instrument main body. A socket (not shown) is provided at the reflector 95, and the socket (not shown) is shown in FIG. 1, for example. The lighting fixture 9 is configured by mounting the base 6 of the halogen bulb L1.

The bulb L1 is mounted on a socket (not shown) of the device 9 by screwing the shell 62 of the base 6 into a screw-type socket.
The electrical connection and the support of the light bulb L1 are performed by contacting the terminal at the back of the scalloped plate or the coil-shaped elastic socket. Then, by energizing the filament 5 through the socket to emit light, the bulb L1 is turned on.

In the halogen lamp L1, the temperature of the bulb 1 and the base 6 is considerably increased by the lighting that causes a halogen cycle. However, no deformation or surface oxidation or the like occurs in the terminal portion 3T or even if it occurs. Light and does not impair electrical connection until end of life of bulb L1.

In this type of lighting equipment 9, when lighting the discharge lamp, a lighting circuit device such as a ballast is required. In addition, a cover member or a lens member may be provided so as to cover the front opening of the instrument body 94 for light control.

[0079]

According to the first to third aspects of the present invention, a circular block consisting of an external lead wire itself protruding from the insulator main body at the top of the base or the top of the pin has an oxide film on the outer surface. There is an advantage that it is possible to provide a bulb which is very light even if it is absent and has good electrical connection as a contact-type electrical connection terminal without any problem in terms of conductivity until the end of its life.

Further, according to the present system, only the main part can be formed by low-power arc melting to form a terminal part, which can be formed in a short time, and productivity can be improved. In addition, it has become possible to easily process a high melting point metal which is difficult to melt in the conventional burner method. According to the invention of claim 4,
There is an advantage that it is possible to provide a tube excellent in electrical connection, in which the round terminal portion does not sink into the outlet hole or the opening.

According to the fifth aspect of the present invention, it is possible to provide a tube which can be applied to a base which has conventionally used silver brazing or the like and which does not cause corrosion in the metal of the connection portion and facilitates the connection work. Have the advantages that can be.

According to the sixth and seventh aspects of the present invention, it is possible to provide an easy-to-manufacture bulb in which the melting point of the metal wire to be melted can be lowered to form a circle of alloy in a short time. Having.

According to the eighth aspect of the present invention, the tube according to any one of the first to seventh aspects mounted on the socket of the instrument main body may be any one of the first to seventh aspects. The same effect as described can be obtained.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional front view of a bulb (halogen lamp) showing a first embodiment of the present invention.

FIG. 2 is an explanatory view of an external lead wire processing device.

FIGS. 3A and 3B are explanatory views showing a processing procedure in order.

FIG. 4 shows current (vertical axis) of a welding machine used as a main processing device.
6 is a graph showing time and time (horizontal axis) in comparison.

FIG. 5 is a partial sectional front view of a main part of a bulb (halogen bulb or HID lamp) showing a second embodiment of the present invention.

FIG. 6 is a front view of a main part of a tube (fluorescent lamp) showing a third embodiment of the present invention.

FIG. 7 is a front view of a main part of a bulb (general gas-filled light bulb) showing a fourth embodiment of the present invention.

FIG. 8 is a perspective view of a lighting fixture showing a fifth embodiment of the present invention.

[Explanation of symbols]

 L1: tube (halogen lamp) L2: tube (halogen lamp or HID lamp) L3: tube (fluorescent lamp) L4: tube (bulb containing general gas) 1: translucent airtight container (bulb) 11: sealed Stop 3: Lead 2L, 2R: Internal lead 3L, 3R: External lead 3T: Terminal (circular block) 5: Light source (filament) 6: Base 61: Body 62: Shell 65: Top 67: Opening 69: Pin 69a: Eyelet 81: Plasma arc welding machine 82: Argon gas cylinder 83: Plasma torch 84: Electrode 85: Ground wire 9: Lighting fixture 94: Instrument body 95: Reflector

Claims (8)

[Claims] A light-transmitting airtight container; an inner lead sealed in the container; and a light emitting source provided on the inner lead; a base joined to an end of the container; Characterized in that the outer lead wire is led out from the top of the base by passing through the base; and a block-shaped terminal formed by melting the outer lead wire by an arc at the top of the base. ball. 2. A translucent airtight container; an inner lead sealed in the container and a light emitting source provided on the inner lead; a base joined to an end of the container; And an outer lead wire led out of the insulator main body at the top of the base and a circular block formed by melting the outer lead wire by an arc at the top of the base. Characteristic tube. 3. A translucent airtight container; an internal lead sealed in the container and a light emitting source provided on the internal lead; a base having terminal pins joined to an end of the container; and a connection to the internal lead. An external lead wire inserted through the terminal pin and led out from the top of the pin; and a block-shaped terminal portion formed by melting the external lead wire by an arc at the top of the terminal pin. A tube characterized in that: 4. The cylindrical terminal part has a diameter larger than an opening diameter of a lead wire insertion hole or a terminal pin opening diameter of a top insulator main body of a base.
The tube according to any one of the above. 5. The bulb according to claim 1, wherein the terminal portion is made of a metal or an alloy having a melting point of 500 ° C. or higher. 6. The tube according to claim 5, wherein the terminal portion is mainly made of at least one of nickel, copper, iron, molybdenum, and tungsten. 7. The terminal according to claim 5, wherein the terminal is made of a metal or an alloy made of a material forming an external lead wire and a material forming a grounding member of an arc melting device. Tube. 8. An appliance main body; a socket provided in the appliance main body; and the above-mentioned 1 to 7 attached to the socket.
And a bulb according to any one of the above.