JPH10334859A - Tungsten halogen lamp and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To handle and seal a very fine filament without giving the damages to the filament by holding the filament by a filament holding part projected from a connecting member which is not connected with a sealing side part, via a mounting part of a current-carrying member. SOLUTION: A pair of current-carrying members 2 led out from a sealing part 13 inside of an envelop 1, is formed by an internal lead bar 2a, a sealing foil 10 and an external lead bar 2b. One edge part of the internal lead bar 2a is bent into almost a U-shape, and the bend part is embedded in a connecting member 5 formed by an insulating member. The point of the internal lead bar 2a projecting from the connecting member 5, is bent into the U-shape to form filament holding part 4, and an edge part of a filament 6 is inserted thereto, and fixed on the filament-holding part 4. Accordingly the edge part of the filament 6 is located in a condition such that it is not connected with a sealing side part 4a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
0 to 250 V) and low power consumption (10 to 100 V).
The present invention relates to a halogen lamp having a very small filament diameter and a long filament length, such as a W (especially, 10 to 40 W) type, in which the handling of the filament is extremely difficult, and a method for producing the same.

[0002]

2. Description of the Related Art As shown in FIG. 9, a conventional halogen lamp (B ') has one end of a sealing foil (10') embedded in a sealing portion (13 ') of an envelope (1'). The lead (21 ') of the filament (6')
An external lead rod (11 ') is welded to the other end of the sealing foil (10'), the external lead rod (11 ') is projected outward from the sealing portion (13'), and the filament (6 ') Filament to prevent sag
The ring support (3 ') was wound around the (6') at a predetermined interval.

[0003] The filament diameter of the filament (6 ') is, for example, 12
If the ring support (3 ') is wound to some extent, such as 0V and 500W, the filament can be wound at the time of winding work, at the time of insertion into the envelope (1'), and at the time of handling the filament (6 ').
Since (6 ′) does not bend or break, it is relatively easy to handle. Is a commercial power supply (100 to
250V), when the filament diameter is extremely small and the filament length is long as in the low power consumption (10 to 100W, especially 10 to 40W) type, the ring support (3 ') is to be wound. The ring support (3 ') with a large strand diameter loses, bends, cuts, or inserts into the envelope (1') and other filaments
When the filament (6 ') is handled, the filament (6') easily bends or breaks, which makes it difficult to handle the filament (6 ') and also easily breaks due to vibration at the time of lighting.

[0004] Even when the filament length is very short and the support (3 ') is not required, the filament (6') can be used.
When the wire diameter is extremely thin as described above, the filament (6 ')
When a conductive member (2 ') composed of a lead portion (21'), a sealing foil (10 ') and an external lead rod (11') is attached to both ends of the filament, the weight is directly applied to the filament (6 '). In addition to the application, there is a problem that an external force is directly applied to the filament (6 ′) during handling, and the filament (6 ′) is bent or broken. Therefore, in this type of halogen lamp, where the filament diameter of the filament (6 ') is extremely thin, it takes a lot of trouble to assemble and handle, and automation for cost reduction cannot be achieved at all. Was thought.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a halogen lamp which can be handled and sealed without damaging the filament even if the filament has an extremely small wire diameter as described above, and which can respond to automation. Development of the manufacturing method is the solution.

[0006]

[Means for Solving the Problems] Claim 1 is supported
When (3) is not used, use the halogen lamp (A) with << Fig.
(E ′), see FIG. 2 (e) and (e ′)> “from the envelope (1) in which both ends are sealed and the sealing portion (13) inside the envelope (1)” A pair of conducting members (2) that are led out and have a filament holding section (4) formed therein, and the filament holding section (4) disposed in the envelope (1) and from the pair of conducting members (2). ) Protrudes from the sealing side part (4a) and the filament holding part (4). And a filament (6) attached thereto. "

A second aspect of the present invention relates to a halogen lamp (A) using a support (3) (see FIGS. 3 and 5). A pair of current-carrying members (2) that are led out of the sealing portion (13) inside the container (1) and have the filament holding portion (4) formed therein, and are disposed in the envelope (1) and A current-carrying member (2) is attached between the sealing-side portion (4a) and the filament-holding portion (4) such that the filament-holding portion (4) projects from the pair of current-carrying members (2). A connecting member (5), a support (3) protruding from the connecting member (5),
It comprises a filament (6) attached to a filament holding part (4) and a support (3). "

According to this, the filament (6) is held by the filament holding portion (4) projecting from the connecting member (5), or the filament holding portion (4) and the support
Since the filament (6) is held in (3), the current-carrying member
Through the attachment part of (2), a part (4a) opposite to the filament holding part (4) `` This part is hereinafter referred to as a sealing side part (4a) '' and the filament holding part (4) Since the edge is cut, even if an external force is applied to the sealing side portion (4a) of the current-carrying member (2) as at the time of sealing, it is directly applied to the filament (6) in the conventional structure Thing is a filament (6)
Instead of being directly hung on the connecting member (5), the deformation of the filament (6) during sealing is eliminated. Further, even if the filament diameter of the filament (6) is small, the filament (6) is not broken or deformed at the time of assembling, and the work can be performed simply and stably. In addition, according to this method, the filament (6) can be fixed between the filament holding portions (4) in a state where a necessary tension is applied by pulling the filament (6). In addition, when the support (3) is attached, the support (3) is not attached to the filament (6) as in the conventional case, but protrudes from the support (3). Regardless of the support (3), the wire diameter can be selected as required.

[Claim 3] is a halogen lamp according to claim 1.
In the manufacturing method of (A), `` an envelope (1) open at both ends and a pair of current-carrying members formed with a filament holding portion (4) ''
In (2), a part thereof is attached to the connecting member (5), and the filament holding portion is attached through an attaching portion of the connecting member (5).
A sealing side portion (4a) part of which is embedded in the sealing portion (13) of the envelope (1) at the opposite portion of (4) is provided so as to protrude from the connecting member (5). Further, a filament assembling member (F) in which the filament (6) is stretched between the filament holding portions (4) is prepared, and the filament assembling member (F) is inserted into the envelope (1). After that, the end side of the envelope (1) is sealed ".

[0010] Claim 4 is a halogen lamp according to claim 2.
In the manufacturing method of (A), `` an envelope (1) open at both ends and a pair of current-carrying members formed with a filament holding portion (4) ''
In (5), a part thereof is attached to the connecting member (5), and the filament holding portion is connected via an attaching portion of the connecting member (5).
A sealing part (4a), a part of which is embedded in the sealing part (13) of the envelope (1) at the opposite part of (4), is provided so as to protrude from the connecting member (5); A support (3) protrudes from the connecting member (5) between the filament holding portions (4), and a filament (6) is further held by the filament holding portion (4) and the support (3). Prepare an assembly member (F), insert the filament assembly member (F) into the envelope (1), and then seal the end of the envelope (1). '' And

[0011] According to this, since the filament (6) is incorporated into the filament assembling member (F) in a state of being cut off from the sealing side portion (4a), the envelope (F) of the filament (6) is formed. No external force is applied to the filament (6) during insertion or sealing into the filament (6).
The filament (6) does not break or deform at the time of assembling even if the wire diameter becomes small. In addition, as described above, when using the support (3), the wire diameter and number of the support (3) can be arbitrarily selected, and an appropriate tension is applied to the filament (6) if necessary at the time of disposing the filament (6). Can be given and fixed. Also,
Since the filament (6) is handled by being incorporated into the filament-incorporating member (F) having a uniform shape and firmness, the filament (6) can be easily applied to an automatic machine, and the manufacturing cost can be reduced. In other words, in the conventional example, at the time of sealing, the filament
One end of (6 ′) is fixed, and the other end is pulled to apply a predetermined tension to the filament (6 ′). In this state, the filament (6 ′) is set on a fixing base (not shown) of the lamp manufacturing apparatus. filament
(6 ') is set inside the envelope (1').
The end of (1 ′) was heated to form a foil for compression sealing. At this time,
Since a large external force is applied to the sealing portion (13 ') during sealing, the filament (6') may be deformed or its dimensions may be changed. Since the filament (6) is pre-installed, no deformation or dimensional change of the filament (6) occurs.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. The present invention relates to, for example, a commercial power supply (100 to 25).
0V) and low power consumption (10-100 W, especially 1
It is suitable for the manufacture of a halogen lamp (A) in which the filament diameter is extremely small, such as a 0-40 W) type, and handling of the filament is extremely difficult, and is particularly suitable for a filament having a long filament length. The halogen lamp (A) manufactured by this method is of a double-end type, in which sealing portions (13) are formed at both ends of a quartz glass envelope (1), and the inside of the envelope body (1H) is formed. Is provided with a filament (6). The filament (6) is made of double coil or single coil tungsten.

A typical shape of the envelope (1) is obtained by cutting a cylindrical glass into a predetermined size, and the material of the envelope (1) such as quartz glass or hard glass is used according to the purpose. Therefore, the shape of the envelope (1) is not limited to a cylindrical shape, and although not shown, the envelope body (1H) “the portion where the filament (6) is stored” is swollen. It goes without saying that various things are used.

Next, the filament assembling member (F) incorporated in the envelope (1) will be described. As shown in FIGS. 1 (a) and 2 (a), the first embodiment of the filament incorporating member (F) has a connecting member (5), and is attached to both ends of the connecting member (5). A pair of current-carrying members (2) having a filament holding portion (4) formed at a tip portion protruding from the connecting member (5), and an opposite portion serving as a sealing side portion (4a). ,
And a filament (6) stretched between the filament holding portions (4).

The filament (6) is made of a double coil or single coil tungsten wire to which a commercial power of 100 to 250 V is applied and which consumes power of about 10 to 100 W (more specifically, about 10 to 40 W). ing. The wire diameter is, for example, 0.01 to 0.1 mm. The filament length varies from short to long according to the use conditions, and is short in FIGS. 1 and 2 and long in FIGS. Support (3) Filament (6)
Regardless of the length, it is used appropriately according to its use.

An insulating member such as glass or ceramic is used for the connecting member (5). The glass may be of the same quality as the envelope (1), but may be hard glass with a lower melting point than the envelope (1), in which case it is fused to the inner peripheral surface of the envelope (1) Things are also possible. 5 and 6 show a case where the connecting member (5) is formed by the metal connecting member main body (5a) and the insulator (5b), as will be described later. The connecting member (5) may embed a part of the current-carrying member (2) and the support (3) in one member. A part of the support (3) may be buried. The bar material constituting the connecting member (5) is a solid body or a pipe material.

The current-carrying member (2) is composed of an internal lead rod (2a), a sealing foil (10) and an external lead rod (2b), with the sealing foil (10) interposed therebetween. One end of the inner lead rod (2a) and one end of the outer lead rod (2b) are welded to both ends. The other end of the inner lead bar (2a) is bent into a substantially U-shape, and the bent portion is embedded in the connecting member (5). Internal lead rod
The tip protruding from the connecting member (5) of (2a) is bent into a ring shape or a U-shape as shown in the figure to form a filament holding portion (4), and the end of the filament (6) holds the filament. It is inserted or placed in the section (4) and fixed by caulking, welding or other fixing methods. Therefore, the filament
The end of (6) is supported only by the filament holding portion (4), and is cut off from the sealing side portion (4a) protruding from the connecting member (5). As a result, as described later, even if an external force is applied to the sealing side portion (4a), the external force is interrupted by the connecting member (5), and no force is transmitted to the filament holding portion (4).

The method of assembling the filament incorporating member (F) is as follows. First, the current-carrying member (2) (and the support (3) when the support (3) is used) are formed in a required shape, and two rod members are formed. A necessary portion of the current-carrying member (2) (in the case of using the support (3), the tip of the support (3)) is sandwiched and heated and fixed. Then, the end of the filament (6) is bent or bent into a U shape as shown in the figure and inserted or placed in the filament holding portion (4), and fixed by caulking, welding or other fixing method. (If the support (3) is used, it is also supported by the filament support portion of the support (3).) At this time, the filament (6) may be fixed while applying tension.

As shown in FIG. 3, the second embodiment of the filament incorporating member (F) has a support (3) in addition to the case of FIG.
Are attached to one or more connecting members (5) at predetermined intervals. This case is suitable when the filament length is long. One end of the support (3) is implanted in the connecting member (5),
The protruding end is formed in a hook or ring shape, and supports an intermediate portion of the filament (6). If the protruding end is ring-shaped, the filament (6) will be inserted.If the U-shaped, after the filament (6) is placed, the filament (6) is rounded into a substantially ring shape, and the filament (6) is It is formed so as not to fall off.

As shown in FIG. 5, a third embodiment of the filament incorporating member (F) is a connecting member made of a metal rod instead of the connecting member (5) made of glass or ceramics in FIG. This is a case where the connecting member (5) is formed by the main body (5a) and the insulator (5b). In this drawing, one or more insulators (5c) are attached to the connecting member body (5a), and one end of the support (3) is fixed to the insulator (5c). Some do not have support (3) as can be inferred from 1.

In this case, the connecting member main body (5a) can use a getter metal such as nickel or tantalum for the whole or a part thereof. In addition, when the support (3) and the connecting member main body (5a) are insulated by the insulator (5c), and are not in contact with each other, the insulator (5c) is surrounded by the envelope (1) as shown in FIG. After being fused, it is not always necessary to cut, but if they are in contact with each other, they need to be cut after being fused. The cutting method is generally performed from outside the envelope (1) by a laser. The cutting timing may be any time as long as it is after fusion.

In the fourth embodiment of the filament incorporating member (F), as shown in FIG. 7, the energizing member (2) is formed by one lead rod, and the envelope (1) is Applies to hard glass.

The fifth embodiment of the filament incorporating member (F) is a case where the supports (3) are long and short and are alternately arranged as shown in FIG. In this case, the filament (6) stretched between the filament holding portions (4) has a zigzag shape, which is suitable for storing a long filament (6).

Next, the halogen lamp (A) according to the method of the present invention.
A typical example of the manufacturing procedure will be described with reference to FIGS. The modified example will be described mainly mainly on the points different from the above-described procedure. In this case, the tip tube (7) is not used. First, an envelope (1) with open ends
And a filament assembling member (F) are prepared, and the filament assembling member (F) assembled as described above is inserted into the inside through the opening. [Fig. 1 (a)]

At a position where the axial position of the filament assembling member (F) with respect to the envelope (1) is optimal, the two members (F) and (1) are held by appropriate means. In this state, one end of the envelope (1) is connected to the gas supply pipe (20), and a non-oxidizing gas (reducing gas such as an inert gas such as nitrogen gas or argon or hydrogen) is introduced into the envelope (1). Gas, or a mixture of these gases, blows it in and blows it out from the other end, keeping the inside of the envelope (1) in a non-oxidizing state,
The portion of the envelope (1) corresponding to the connecting member (5) is heated. Thereby, the connecting member (5) is softened and fused to the inner peripheral surface of the envelope (1). The fusion point may be over the entire length of the connecting member (5) or may be partial. [Fig. 1 (b)]

Next, the other end of the filament assembling member (F) (the end to which the gas supply pipe is not connected) is heated and softened at the opening end corresponding to the sealing foil (10). The heated and softened portion gradually contracts due to its surface tension and the heat of the burner (19) due to the heating and softening, and the shrinking portion is lightly or strongly pinched to complete the sealing of the lower open end. This portion is referred to as a sealing portion (13). [Fig. 1 (c)]

When the sealing of the open end of the other end is completed, the inside of the envelope (1) is subjected to necessary processing such as washing with a non-oxidizing gas, and then the unsealed interior of the envelope (1) is removed. The required gas (G) is filled from the gas supply side end, and in some cases, most of the envelope (1) including the previously sealed portion (13) is cooled with liquid nitrogen (L). A portion corresponding to the sealing foil (10) at the end on the gas supply side is heated to soften the heated portion, thereby forming the sealing portion (13) in the same manner as described above. [FIG. 1 (D)] When the sealing of both ends is completed, unnecessary portions of the opening end are cut off if necessary, and the halogen lamp (A) of FIG. 1 (C) is obtained. The above-mentioned assembling method is a typical example, and naturally, other cases are included if the technical idea of the method of the present invention is met.

FIGS. 1 (a), (c '), (d') and (e ') show the case where the connecting member (5) is not welded to the inner peripheral surface of the envelope (1) in the above case, and the filament assembly is used. One of the current-carrying members (2) of the mounting member (F) is held by the mount holding base (14), and one of them is sealed in this state. FIG. 1C shows a state in which the mount holder (14) side is sealed. Other procedures are the same as the above. Finished halogen lamp (A)
In this state, the connecting member (5) is in a state of floating or in contact with the inner peripheral surface of the envelope (1). Fig. 1 (e ')

FIGS. 2 (a), (b), (c), (d) and (e) use an envelope (1) having a tip tube (7) and connect the connecting member (5) to the envelope (1). This is the case where the inner peripheral surface is fused. Gas supply pipe to tip pipe (7)
(20) is connected, and the connecting member (5) is fused to the inner peripheral surface of the envelope (1) in the same procedure as described above while supplying an inert gas into the envelope (1). [Fig. 2 (b)] Then, a lid (15) is attached to one end of the envelope (1), and a tip tube is attached.
A gas supply pipe (20) is connected to (7) to supply a non-oxidizing gas [FIG. 2 (c)]. Hereinafter, sealing is performed in the same procedure as in FIGS. 1 (c) to 1 (e), and finally the chip tube (7) is sealed.

FIGS. 2A, 2C, 2D, and 2E use an envelope 1 having a tip tube 7 and remove the connecting member 5 in the opposite manner. This is a case where no fusion is performed to the inner peripheral surface of the enclosure (1), and the other manufacturing procedures are the same as those described above. The above-mentioned assembling method is a typical example, and naturally, other cases are included if the technical idea of the method of the present invention is met.

[0031]

According to the present invention, since the filament holding portion and the sealing side portion are cut off from each other, an external force is applied to the sealing foil side portion of the current-carrying member as in sealing. Even if it is applied, the force is not applied to the filament by being applied to the connecting member, and even if the filament diameter of the filament is reduced, the filament is not broken or deformed at the time of assembling, sealing or handling. Also, since the filament is incorporated into the filament assembly member,
No external force is applied to the filament during insertion or sealing of the filament into the envelope, and no matter how small the filament diameter becomes, the filament may break during assembly or sealing. Since the filament is not deformed, and thus the filament is handled by being incorporated into the filament-incorporating member having a fixed shape and firm, the filament can be easily applied to an automatic machine and the production cost can be reduced. Further, since the filament can be independently attached to the filament holding portion, a predetermined tension can be applied to the filament in advance. Further, when the support is used, the mounting of the support is simplified, and the filament is not damaged even if the wire diameter of the support is large.

[Brief description of the drawings]

FIGS. 1 (a) to 1 (e) are drawings showing a procedure for manufacturing a halogen lamp of the present invention when a connecting member is fused to the inner peripheral surface of an envelope without using a tip tube. ')-(E'): A drawing showing a manufacturing procedure of the halogen lamp of the present invention in the case where the tip tube is not used and the connecting member is not fused to the inner peripheral surface of the envelope.

FIGS. 2A to 2E show a manufacturing procedure of the halogen lamp of the present invention when the connecting member is fused to the inner peripheral surface of the envelope using a tip tube. )-(E '): A drawing showing the procedure for manufacturing the halogen lamp of the present invention when the connecting member is not fused to the inner peripheral surface of the envelope using a chip tube.

FIG. 3 is a sectional view of a second embodiment of the halogen lamp according to the present invention, in which a support is used.

FIG. 4 is a front view of the filament incorporating member used in FIG. 3 before the filament is incorporated.

FIG. 5 is a sectional view of a type using a support in the halogen lamp according to the present invention.

FIG. 6 is a front view of the filament incorporating member used in FIG. 5 before the filament is incorporated.

FIG. 7 is a partial front sectional view of the present invention in a case where the current-carrying member is constituted by one lead rod.

FIG. 8 is a partial front sectional view in the case where long and short supports are alternately used in the present invention.

FIG. 9 is a front sectional view of a conventional example.

[Explanation of symbols]

(A)… Halogen lamp (B ')… Conventional halogen lamp (F)… Filament assembly member (L)… Liquid nitrogen (1)… Envelope (2)… Electrification member (2a)… Inner lead rod ( 2b) ... external lead rod (3) ... support (3 ') ... support ring (4) ... filament holding part (4a) ... sealing side part (5) ... connecting member (5a) ... connecting member body (5b) ( 5c) Insulator (6) Filament (7) Chip tube (10) Sealing foil (11) Lead bar (13) Sealing part (14) Mount support (15) Lid

Claims (4)

[Claims] 1. An envelope in which both ends are sealed, a pair of current-carrying members which are drawn out of the sealing portion inside the envelope and have a filament holding portion formed therein, And a connecting member having an energizing member attached between the sealing side portion and the filament holding portion such that the filament holding portion protrudes from the pair of energizing members, and attached to the filament holding portion. A halogen lamp characterized in that the lamp is constituted by a filament that has been formed. 2. An envelope in which both ends are sealed, a pair of current-carrying members which are drawn out of the sealed portion inside the envelope and have a filament holding portion formed therein, And a connecting member having an energizing member attached between the sealing side portion and the filament holding portion so that the filament holding portion protrudes from the pair of energizing members, and a connecting member protruding from the connecting member. A halogen lamp comprising: a support; a filament holding portion; and a filament attached to the support. 3. An enclosure having both ends open and a pair of energizing members on which a filament holding portion is formed.
A part of the sealing member is attached to the connecting member, and a part thereof is buried in the sealing part of the envelope at the part opposite to the filament holding part via the attaching part of the connecting member. Is provided so as to protrude from the connecting member, and further, a filament assembling member in which a filament is stretched between the filament holding portions is prepared, and the filament assembling member is inserted into the envelope. A method for manufacturing a halogen lamp, comprising sealing an end side of a rear envelope. 4. An enclosure having both ends open and a pair of current-carrying members on which a filament holding portion is formed.
A part of the sealing member is attached to the connecting member, and a part thereof is buried in the sealing part of the envelope at the part opposite to the filament holding part via the attaching part of the connecting member. Are provided so as to protrude from the connecting member, and a support is provided from the connecting member between the filament holding portions. Further, a filament holding member and a filament incorporating member in which a filament is held by the support are provided. A method for manufacturing a halogen lamp, comprising inserting the filament-incorporating member into an envelope, and then sealing the end of the envelope.