JPS62157664A - Incandescent lamp - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The inventive incandescent lamp will be explained according to the following items.

A. Industrial field of application B1 Overview of the invention C8 Prior art [Fig. 11] B1 Problem to be solved by the invention E1 Means for solving the problem F. Example a Glass bulb [Fig. 1 to Figure 3] b, Holding plate [Figures 1 to 3] C0 cap part [Figures 1 to 8] C-10 Cap body [Figures 1 to 8] C-2, Contact [Figures 1 to 8] 3 to 6] C-3, Metal cylinder [Fig. 1 to 3, Fig. 7, Fig. 8] d. Connection of glass bulb and cap part [Fig. 1 to 3] e , Modifications of the holding plate [FIGS. 9 and 10] G1 Effects of the invention (A. Field of industrial application) The present invention relates to a novel incandescent light bulb. Specifically, it is an incandescent light bulb with a base body made of synthetic resin, which prevents the filament from being misaligned in the direction perpendicular to the axis of the glass bulb when the glass bulb is attached to the base body. The aim is to provide a new incandescent light bulb.

(B. Summary of the Invention) The inventive hot light bulb is provided with a mounting portion having a plurality of insertion holes in a holding plate wrapped around a pinch seal portion of a glass bulb, and a base portion that is inserted into the insertion holes of the mounting portion. a plurality of metal mounting pieces are formed, and with the metal mounting pieces inserted into the insertion holes of the holding plate, these metal mounting pieces and the holding plate are fixed to connect the glass bulb and the cap portion. This prevents the filament from being misaligned in the direction perpendicular to the axis of the glass bulb when the glass bulb and the cap are connected.

(C, Prior Art) [Figure 11] An incandescent light bulb equipped with a base made of synthetic resin has been proposed. An example of such an incandescent light bulb is shown in Figure 11. This incandescent light bulb a is disclosed in U.S. Patent No. This is shown in the specification of No. 4412273.

b is a base body made of synthetic resin, and terminals C, C, C are provided protruding from the rear end thereof. Further, a cylindrical metal tube d is fixed to the front end of the base body, and welding pieces e, e, . . . are provided protruding from the open end of the metal tube d.

f is a metal cap body holding a glass bulb g;
It is slidably fitted into the metal tube d.

In order to align the filament h enclosed within the glass bulb g, the cap body f is slid against the metal cylinder d to adjust the positional relationship between the filament h and the base body, Once the positional relationship is determined, the welding pieces e, e, . . . of the metal cylinder d and the cap body f are fixed by spot welding or the like.

(D. Problem to be solved by the invention) In the conventional incandescent light bulb a described above, its structure makes it possible to adopt a synthetic resin base body, but the axial direction of the glass bulb g There is a problem in that the position of the filament (h) in the direction perpendicular to the filament (h) is easily misaligned.

That is, the metal cylinder d fixed to the base body and the cap body f holding the glass bulb g are connected by fitting their cylindrical parts to each other, and are made slidable in the axial direction. ing. Therefore, such a fitted state also allows mutual movement in the rotational direction, which may cause the filament h to shift from its normal position in the rotational direction.

(E. Means for solving the problems) In order to solve the above-mentioned problems, the inventive incandescent light bulb has the following features:
A holding plate that holds a glass bulb containing a filament is provided with a mounting part having a plurality of insertion holes, and a plurality of metal mounting pieces provided on the base are inserted into the insertion holes of the holding plate and mounted in that state. The glass bulb is connected to the base by fixing the base and the metal mounting piece.

Therefore, in the incandescent light bulb according to the present invention, since the plurality of metal mounting pieces provided on the base are inserted into the plurality of insertion holes provided on the mounting portion of the holding plate holding the glass bulb, the glass bulb is prevented from moving in a direction perpendicular to the axial direction of the filament, thereby preventing the filament from being dislocated in the direction perpendicular to the axial direction of the glass bulb.

(F. Examples) Below, details of the inventive incandescent light bulb will be described according to illustrated examples. In the illustrated embodiment, the present invention is applied to a halogen light bulb 1.

(a, glass bulb) [Figures 1 to 3 12 show the glass bulb of the halogen light bulb 1, one end of which is closed with a substantially flat pinch seal part 3, and the other end closed with an exhaust part 4 to form a hermetic seal. The inside is filled with an inert gas and a specified halogen.

5.5 is a lead wire, the middle part of which is held in the pinch seal part 3 so as to pass through it in the axial direction, and the parts 5a, 5a inside the glass bulb 2 are used as internal lead wires, Portion 5 led out from the pinch seal portion 3
b and 5b are external lead wires. A filament 6 is stretched between the tips of the internal lead wires 5a, 5a.

(b. Holding Plate) [FIGS. 1 to 3 17 show a holding plate for holding the glass bulb 2 and connecting it to a cap portion to be described later, and is formed of a metal plate.

The holding plate 7 is formed by integrally forming a metal band 8 and connecting plates 9, 9, 10.

The metal band 8 is bent into a substantially rectangular shape so as to be wrapped around the pinch seal portion 3 of the glass bulb 2, and connecting pieces 8a, 8a are formed at the portions where both ends meet. In addition, the parts corresponding to both ends in the longitudinal direction of the rectangle are bent inward into a shallow figure 7 shape.
These are elastic contact portions 8b, 8b.

The metal band 8 is connected to the pinch seal portion 3 of the glass bulb 2.
In this state, the connecting pieces 8a, 8a are connected by spot welding or the like.

At this time, the tips of the elastic contact parts 8b, 8b are connected to the pinch seal part 3.
is in elastic contact with both end faces in the longitudinal direction.

In this way, the metal band 8 is fixed to the pinch seal portion 3.

The connecting plates 9.9 and 10 are both provided along the rear end edge of the long side of the metal band 8, ie, along the edge on the opposite side to the side where the glass bulb 2 is located.

The connecting plates 9.9 are the connecting pieces 8a, 8a of the metal band 8.
The other connecting plate 10 is formed by bending at a substantially right angle from the rear end edge and the corner of the part where these connect. It is formed by being bent outward from the rear edge of the side at a substantially right angle.

Then, one each of the connecting plates 9, 9, and two spaced insertion holes 11, 11,
φ is formed, and each insertion hole 11, 11, ... is rectangular, and a cut and raised piece L is formed from the long side of each.
la, 11a, . . . are formed in a rising shape toward the front.

(c, cap part) [Figures 1 to 8] 12 is a cap part, which includes a synthetic resin cap body 13, and 2
It consists of two contacts 14.14 and one metal cylinder 15.

(c-1, cap body) [Figures 1 to 8] The cap body 13 is molded with synthetic resin, and the glass bulb holding part 16
and the connector portion 17 are formed integrally or in one body.

The glass bulb holder 16 has an open front and a closed plate 18 at the rear end.
A plurality of rectangular insertion holes 19, 19, and 19 are formed at the peripheral edge of the closing plate 18. Further, a lead wire insertion hole 20.20 is formed in the center of the closing plate 18.

21 is a flange integrally formed on the outer peripheral surface of the glass bulb holding part 16, 22 is an annular groove formed on the front side of the flange 21, and an O-ring-shaped seal ring 23 is provided in the annular groove 22. Fitted and installed.

24 is a half-cylindrical portion that is one half of a cylindrical portion extending rearward from the flange 21 and having an oval cross-sectional shape;
It is formed integrally with the glass bulb holding part 16.

The connector portion 17 is formed integrally with the half-cylindrical portion 24 so as to protrude laterally.

The connector portion 17 has a cylindrical shape with a substantially elliptical cross-sectional shape, is opened toward the side, and has a base that is connected to the semi-cylindrical portion 2.
Blocked by 4.

A rectangular attachment hole 25.25 is formed in the half-cylindrical portion 24 at a location corresponding to the connector portion 17.

Reference numeral 26 is an integrated cover, which is made of the same synthetic resin as the material of the base body 13.

The integral cover 26 includes a semi-cylindrical portion 26a that cooperates with the semi-cylindrical portion 24 to form a cylinder having an oval cross-sectional shape, and a closing portion 26b that closes the rear end of the cylinder. The half-cylindrical portion 26a has a front end surface joined to the rear surface of the flange 21, both end surfaces joined to both end surfaces of the half-cylindrical portion 24 in a butt-like manner, and further has a closing portion 28b.
The peripheral end surface of the glass bulb holding portion 16 and the connector portion 1 are joined to the inner surface of the rear surface of the half-cylindrical portion 24.
7 and covers the intermediate portion 27 between the two.

Note that each of the above-mentioned joining may be performed by appropriate means such as adhesion or ultrasonic fusion.

Moreover, the reason why the cover unit 26 is joined to the base body 13 is as follows.
A contact 14.14 and a metal tube 15, which will be described later, are attached to the base body 13, and the external lead wire 5b of the glass bulb 2 is attached to the base body 13.
, 5b are connected to contacts 14.14.

(c-2, Contact) [FIGS. 3 to 6] The contact 14.14 is formed of a conductive metal plate, and the contact portions 14a, 14a and the locking portions 14b, 14bk are integrally formed.

An active portion 14c is formed between the contact portion 14a and the locking portion 14b, the width of which is extremely narrower than other portions.

Note that 14d and 14d are stop pieces that protrude laterally from the contact portion 14 & I7) near the proximal end.

The above-mentioned contacts 14.14 are attached to the connector portion 17 in the following manner.

That is, the locking portion of the contact 14 is inserted into the mounting hole 25 formed in the half-cylindrical portion 24 from the connector portion 17 side. When the retaining pieces 14d, 14d formed on the contact portion L4a are inserted until they come into contact with the periphery of the connector portion side of the mounting hole 25,
The locking portion 14b protrudes toward the intermediate portion 27 side. Therefore, if the locking portion 14b is twisted in the range of approximately 60° to 90°,
The active part 14c, which is formed narrower than other parts, is twisted so that the locking part 14b is positioned across the mounting hole 25, so that the contact 14 will be held by the semi-cylindrical portion 24, and the contact portion 14a will be located within the connector portion 17.

Note that 28 is a slope formed in contact with the opening on the intermediate portion 27 side of the mounting hole 25, and when the locking portion 14b is twisted, both ends 14b', 14b of the end surface on the contact portion L4a side
' comes to move up the slope 28, and the retaining pieces 14d and L4d of the contact part 14a move upward toward the half-cylindrical part 28.
4, thereby making the mounting state of the contact 14 firm and stable.

(c-3, metal cylinder) [Fig. 1 to 3, Fig. 7, Fig. 8
[Figure] The metal tube 15 is formed into a cylindrical shape that can be snugly fitted into the glass bulb holding portion 16 of the cap body 13, and locking pieces 15a, 15a, 15a integrally project rearward from the rear end. There are four mounting pieces 15 from the front end.
b, 15b, - - The fist is integrally protruded toward the front.

The arrangement intervals of the mounting pieces 15b, L5b, -.e are the insertion holes 11.11 formed in the holding plate 7,
-The placement interval is the same as that of the battle.

In addition, in order to uniquely define the positional relationship of the mounting pieces 15b, 15b, ... with respect to the base body 13, the locking piece L5
a, 15a, 15a are arranged at different intervals, and the closing plate 1 of the glass bulb holding part 16 of the cap body 13
The arrangement intervals of the insertion holes 19, 19, and 19 formed in 8 are as follows:
This corresponds to the arrangement interval of the locking pieces 15a, 15a, 15a.

Thus, the metal cylinder 15 is fitted into the glass bulb holding part 16 of the base body 13 from the rear end side, and the locking piece 15a,
15a, 15a are the insertion holes 19 formed in the closing plate 18.
19.Insert into 19.

The locking pieces 15a, 15a, 15a are inserted into the insertion holes 19.19.1
9, the locking pieces L5a, L5a, 15
The tip of a is projected to the rear side of the closing plate 18. Therefore,
By twisting the portions of the locking pieces 15a, 15a, and 15a that protrude toward the rear side of the closing plate 18 to prevent them from being removed from the insertion holes 19, 19, and 19, the metal tube 15 is secured to the base body 13. It is attached to the glass bulb holding part 16.

(d. Coupling the glass bulb and the cap part) [FIGS. 1 to 3] The glass bulb 2 is coupled to the cap part 12 in the following manner.

That is, first, the mounting pieces 15b, 1 provided on the base portion 12 are
5b, 11... are the holding plates 7 holding the glass bulbs 2
The insertion holes 11 formed in the connecting plates 9, 9 and 10 of
．． Insert into 11,... And the insertion hole 11.11
Adjust the positional relationship between the flange 21 provided on the cap body 13 and the filament 6 sealed in the glass bulb 2 by sliding the mounting pieces 15b, 15b, . , Once the positional relationship has been adjusted, the holding plate 7 is attached by an appropriate welding means such as plasma arc welding.
through holes 11.11 of connecting plates 9.9 and 10,・
- Cut and raised pieces 11a, lla, raised from the edge of φ
・e is the mounting piece 15b provided on the base part 12,
Fixed to...

With this, the glass bulb 2 is attached to the holding plate 7 and the mounting piece 1.
5b, 15b, . . . are supported by the base portion 12.

And an external lead wire 5b led out from the glass bulb 2,
5b is an external lead wire insertion hole 20 formed in the closing plate 18.
．． 2-0 is inserted into the contact 14.2 at the intermediate portion 27.
It is connected to the locking parts 14b, 14b of 14 by spot welding, soldering, etc.

In the manner described above, the glass bulb 2 is coupled to the base body 13, and the cover unit 26 is attached to the base body 13, thereby forming the halogen light bulb 1.

(e. Modification of the holding plate) [FIGS. 9 and 10] FIGS. 9 and 10 show modifications of the holding plate.

The retaining plate 29 of this modification has two parts 3OA, 3
Consists of 0B. These portions 30A and 30B have a planar shape that is symmetrical to each other.

Each of the portions 30A and 30B has a substantially U-shape in plan view, and is butted against each other at the open end portions of the two characters to form a substantially rectangular space in plan view.

Connecting pieces 31, 31, fists, etc., which protrude outward, are formed at the abutting ends of each portion 30A, 30B.

Therefore, these two parts 3OA, 30B are the glass bulb 2
The connecting pieces 31 and 31 are positioned so as to surround the pinch seal part 3 of the glass bulb 2 and the holding plate 29 are joined together by spot welding or the like. are combined. Note that 32.32 is an elastic contact portion bent in a substantially V-shape.

32.32, . . . are connection plates formed by bending laterally at a substantially right angle from the rear end edges of the opposing sides of each portion 30A, 30B, and these connection plates 32. 32, e... have through holes 33, 33, respectively.
, Φ... are formed in each of the insertion holes 33, 33, -- of the holding plate 29 that is connected to the glass bulb 2.
Mounting pieces 15b, 15b, . . . of the metal cylinder 15 provided in the
・Insert the mounting pieces 15b, 15b, 〇〇 and each connection plate 32, 32 of the holding plate 29 in this state.
・and 1, for example, by means such as plasma arc welding.

(G. Effects of the Invention) As is clear from the above description, the unexploded bright light bulb 1 includes a glass bulb with a substantially flat pinch seal portion and a filament sealed therein, and a glass bulb with a pinch seal portion of the glass bulb. It consists of a holding plate that is wrapped around and has a mounting part having a plurality of insertion holes, and a base part that has a plurality of metal mounting pieces that are inserted into the insertion holes of the holding plate, and the holding plate is attached to a glass bulb. Wrap it around the pinch seal part of
The glass bulb is held in the base by fixing the metal attachment piece of the holding plate and the metal attachment piece of the base while the metal attachment piece of the base is inserted into the insertion hole of the holding plate.

Therefore, in the incandescent light bulb according to the present invention, the plurality of metal mounting pieces provided on the base portion are inserted into the plurality of insertion holes provided on the mounting portion of the holding plate holding the glass bulb, so that the glass bulb is The sphere is prevented from moving in a direction perpendicular to its axis, so that the position of the filament in a direction perpendicular to the axis of the glass sphere is not disturbed.

In the above description of the embodiments, an example was shown in which the present invention was applied to a halogen light bulb, but it goes without saying that the present invention can also be applied to other incandescent light bulbs other than halogen light bulbs.

Further, in the above embodiment, the two metal mounting pieces and the mounting portion are joined by plasma arc welding, but other joining means may also be used.

[Brief explanation of drawings]

1 to 8 show an example of the application of the present invention to a halogen light bulb, in which FIG. 1 is an exploded perspective view, FIG. 2 is a perspective view, and FIG. 3 is a longitudinal cross-sectional view. Fig. 4 is an enlarged perspective view of the main part, Fig. 5 is an exploded perspective view of the main part shown in Fig. 4, Fig. 6 is a sectional view of the main part shown in Fig. 4, and Fig. 7 is a separate perspective view of the main part shown in Fig. 4. FIG. 8 is an exploded cross-sectional view of the main part shown in FIG. 7, FIGS. 9 and 10 are modified examples of the holding plate, and FIG. 9 is an exploded view of the main part. FIG. 10 is a perspective view, FIG. 10 is a plan view of the holding plate, and FIG. 11 is a side view showing an example of a conventional incandescent light bulb. Explanation of symbols 1...Incandescent light bulb, 2-...Glass bulb, 3...Pinch seal section. 6...Filament, 7ms number holding plate, 9.10 Temple/warriage mounting part, 11...Through hole. 12...O base part, 15b...metal mounting piece. 2911-・Holding plate. 32...Mounting part, 33...Insertion hole N pass map Fig. 1 13 1---- Incandescent ILT $ Main part angle 1i reference ÷ half fL Fig. 5 Fig. 12 - Base part 156... Metal 114 Enlarged cross-sectional view of the main part of the scythe Fig. 7 Cross-sectional view of the main part 4 Fig. 8 Main part of the main part Angle quick metal → Half 9L drawing (Henga 3,000 kuri) 32...
Ear λ Attached sound 5 Plane ti <*Shape Zari)

Claims (1)

[Scope of Claims] A glass bulb having a substantially flat pinch seal portion and containing a filament, and a holding plate having a mounting portion wrapped around the pinch seal portion of the glass bulb and having a plurality of insertion holes. and a cap portion having a plurality of metal mounting pieces inserted into the insertion holes of the holding plate, the holding plate being wrapped around the pinch seal portion of the glass bulb, and the metal mounting pieces of the cap portion being attached to the holding plate. An incandescent light bulb characterized in that the glass bulb is held in the cap by fixing the mounting portion of the holding plate and the metal mounting piece of the cap while the glass bulb is inserted through the insertion hole of the bulb.