JPH0323656Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a novel light bulb with a base. Specifically, when attaching and fixing a light bulb capsule with a pinch seal section at one end of the glass bulb to the tip of the cap, it is possible to avoid damaging the bulb capsule, especially the glass bulb and the pinch seal section, and to protect the filament. The present invention aims to provide a novel light bulb with a base that is easy to align.

Prior Art FIGS. 10 to 12 show an example of a conventional light bulb with a cap.

1 is a bulb capsule of a halogen bulb. 2 is a glass bulb whose one end is closed with a pinch seal part 3 and the other end is closed with an exhaust part 4 to form a hermetically sealed shape. 5,5
. . . is a lead wire that passes through the pinch seal portion 3 and has an intermediate portion held by the pinch seal portion 3. Reference numerals 6 and 6 denote glass bridges, which are welded within the glass bulb 2 so as to sandwich the lead wires 5, 5, . . . from both sides. Further, filaments 7, 7 are stretched between the tips of appropriate lead wires 5, 5, . . . . The pinch seal portion 3 has a substantially flat shape,
Projections 8 on both sides in the width direction,
8... are formed, and the cross-sectional shape is approximately I-shaped. Further, engagement protrusions 9, 9 are formed approximately at the center of both sides of the pinch seal portion 3. Incidentally, the glass bulb 2 is filled with an inert gas and a suitable halogen gas. The light bulb capsule 1 is formed as described above.

10 is a holding plate. The holding plate 1
0 is made of a metal plate with spring elasticity,
The planar shape is approximately circular. The peripheral edge of the holding plate 10 is bent in a step-like manner to form a downwardly facing contact surface 11 and a caulking edge 12 bent downward from the outer peripheral edge of the corresponding contact surface 11. . Further, an engaging protrusion 13 is formed at a predetermined location of the caulking edge 12 by protruding inward.
is formed. Holding surface 1 of holding plate 10
4 has two pairs of intermediate holding pieces 15, 15, 15, 15
and two pairs of side pressing pieces 16, 16, 16', 16' are formed in a cut and raised shape. Intermediate presser piece 15
and 15 and 15 and 15 are formed to face each other, and are located downward from the holding surface 14 (FIG. 10,
They are bent toward the lower edge of the drawing paper in Figure 2, and are inclined so that their tips 17 and 17 and 17 and 17 approach each other. The side holding pieces 16 and 16, 16' and 16' are formed to face each other, and are directed upward from the holding surface 14 and toward the tip 18.
and 18, and 18' and 18' are bent and inclined toward each other. And these presser pieces 15, 15, 15, 15, 16, 16, 1
There are slits 19, 19, 19 between each of 6' and 16' to give more elasticity to these holding pieces.
and 19, 19, 19 are formed. Also,
Spaces 20, 20 are formed on the outside of the side holding pieces 16, 16 and 16', 16'.
0, 20, and the space formed by forming each of the holding pieces has a substantially I-shape corresponding to the cross-sectional shape of the pinch seal portion 3 of the light bulb capsule 1 when viewed from above.

Therefore, the pinch seal part 3 of the light bulb capsule 1 is inserted from above between the holding pieces 15 and 15, 15 and 15, 16 and 16, and 16' and 16' of the holding plate 10, as can be clearly seen in FIG. , presser piece 1
6, 16, 16', 16' upper end 18, 18, 1
8' and 18' are inserted until they touch the lower end of the sealed glass container 2. In this state (as shown in FIG. 12), the intermediate presser pieces 15, 15, 15, 15
The tip portions 17, 17, 17, 17 are located below the holding surface 14 at the pinch seal portion 3 of the bulb capsule 1.
It comes into elastic contact with the sides of the middle part from both sides. At this time,
The outer side end portions of the side presser pieces 16, 16, 16', 16' are brought into contact with the opposing side surfaces of the protrusions 8, 8 of the pinch seal portion 3. In addition, the intermediate presser piece 15,1
The tips 17, 17, 17, 17 of 5, 15, 15 engage with the upper surface of the engaging protrusions 9, 9 formed on the side surface of the pinch seal part 3, and thereby the holding plate of the bulb capsule 1 10 is prevented.

Problems to be Solved by the Invention However, in the above-mentioned conventional light bulb with a base, when the light bulb capsule 1 is held on the holding plate 10, the side holding pieces 16, 16, 16', 1
The sharp edges 18a, 18a, 18'a, 18'a of the tips 18, 18, 18', 18' of the glass bulb 2 abut against the side edge of the pinch seal portion of the glass bulb 2, and this causes the glass bulb 2 and This causes damage called burrs and cracks to occur in the pinch seal portion 3, resulting in the problem of increased occurrence of defective products during the light bulb manufacturing process.

Purpose of the invention The present invention was developed in view of the above-mentioned problems with conventional light bulbs with bases. To provide a novel light bulb with a base that does not damage a light bulb capsule, especially its glass bulb or pinch seal part, and facilitates the alignment of a filament when it is attached and fixed to a light bulb.

Summary of the invention In order to achieve the above-mentioned purpose, the light bulb with a cap of the present invention has a light bulb capsule with a substantially flat pinch seal part provided at one end of a glass bulb with a filament sealed inside, and a light bulb capsule that has a substantially flat pinch seal part at one end. It is coupled to a holding plate externally fitted on the upper opening edge of the tube metal via a surrounding metal band body, and a mounting member formed on the metal band body is attached to a mounting member that is erected on the upper surface of the holding plate and extends in the vertical direction. It is characterized by being fixed to the member.

Therefore, according to the present invention, the light bulb capsule is attached and fixed to the base body through the metal band body surrounding the pinch seal portion, so that when the light bulb capsule is attached to the base body, it is not necessary to attach the light bulb capsule to the base body. In addition, there is nothing that comes into contact with the glass bulb or the pinch seal portion, and as a result, damage to the bulb capsule when attaching it to the base body can be greatly reduced. In addition, since the mounting member of the metal band body is fixed to the mounting member that is erected on the upper surface of the holding plate of the cap body and extends in the vertical direction, the mounting member of the metal band body can be attached vertically with respect to the mounting member of the holding plate. By moving the filament while sliding it in the direction, it becomes easy to align the filament.

Embodiments The details of the light bulb with base of the present invention will be described below with reference to illustrated embodiments. In addition, in each of the following examples, the bulb capsule is the same as the conventional one.
Since the light bulb capsule 1 will be used, a description of the light bulb capsule 1 will be omitted.

First Embodiment FIGS. 1 to 3 show a first embodiment of the lamp with base of the present invention.

21 is a cap body, and a holding plate 22A;
It consists of a tube metal 23.

The holding plate 22A has a substantially disk-shaped holding portion 24.
and an annular portion 25 protruding downward from the peripheral edge of the holding portion 24 are integrally formed, and a substantially rectangular attachment hole 34 is formed in the holding portion 24. Slits 35, 35 are formed from the center of the side edge along the longitudinal direction of the attachment hole 34 and extend perpendicularly to the side edge. Further, from the opposing edges of the slits 35, 35, mounting pieces 36, 36, .

A positioning flange 27 is fixed to the cylindrical metal 23 by welding or soldering, and terminal fittings 29, 29, 29 are fixed to the rear end via an insulator 28.

The upper end opening edge of the tube metal 23 is opened slightly outward to form a locking flange 30. The outer diameter of this locking protrusion 30 is the same as that of the annular portion 2 of the holding plate 22A.
It is formed slightly smaller than the inner diameter of 5.

Thus, the holding plate 22A is fitted onto the opening edge of the barrel metal 23. At this time, the lower surface of the holding portion 24 of the holding plate 22A is brought into contact with the open end of the cylindrical metal 23. After that, the holding plate 22A
The annular portion 25 is bent at several points 31, 31, . . . so as to be brought into close contact with the side surface of the cylindrical metal 23, as shown in FIG. As a result, the holding plate 22
The bent annular portion 25 of A is engaged with the engagement protrusion 30 of the cylindrical metal 23, and the holding plate 22A is fixed to the cylindrical metal 23. Note that the fixing relationship between the holding plate 22A and the cylindrical metal 23 is secure even as it is, but the fixation can be prevented by soldering or spot welding the tip of the annular portion 25 of the holding plate 22A to the side surface of the cylindrical metal 23. It may be possible to increase certainty.

Reference numeral 37 denotes a metal band wrapped around the pinch seal portion 3 of the light bulb capsule 1, and projecting pieces 38, 38 are provided laterally from the center of the side surface along the longitudinal direction of the metal band 37. There is. Note that these projecting pieces 38, 38 separate the metal band 37 into two divided bodies 37.
a, 37b, and these divided bodies 37
Overlapping parts 38a, 38a and 38 of a, 37b
b, 38b.

Therefore, the projecting pieces 38 and 38 of the metal band 37
are inserted between the mounting pieces 36 and 36 provided on the holding plate 22A and between 36 and 36, and when the filaments 7, 7 are properly positioned, the mounting pieces 36, 36... and the projecting pieces 38, 38 are inserted. The bulb capsule 1 is held on the holding plate 22A by spot welding. And protrusion 3
8, 38 can be slid relative to the mounting pieces 36, 36... in the axial direction and the direction perpendicular to the axis (the gap between the mounting pieces 36, 36... The filaments 7, 7 can be aligned by moving the filaments 7, 7 only in the extending direction.

Second Embodiment FIGS. 4 to 6 show a second embodiment of a light bulb with an annular base.

The second embodiment differs from the first embodiment only in the shapes of the holding plate and the metal band, and other parts are the same as those in the first embodiment. Therefore, the holding plate and the metal band will be explained in detail, and other parts will not be shown in the drawings, or even if shown, they will be given the same reference numerals as in the first embodiment. The explanation will be omitted.

A mounting hole 39 is formed in the holding portion 24 of the holding plate 22B and is large enough to allow the pinch seal portion 3 of the light bulb capsule 1 to be inserted therethrough. Then, two mounting pins 4 are inserted from a position near the edge of the mounting hole 39.
0.40 are erected. Note that 41, 41 are knurled portions formed at the bases of the mounting pins 40, 40.

42 is a metal band wrapped around the pinch seal portion 3 of the light bulb capsule 1, and protrusions 43, 43 are protruded from both longitudinal ends of the metal band.
Incidentally, the protrusions 43, 43 constitute the metal band 42 by two divided bodies 42a, 42b, and overlapped parts 43a, 4 of these divided bodies 42a, 42b.
It is formed by joining 3a, 43b, and 43b.

Therefore, the protrusion 4 provided on the metal band 42
3, 43 are brought into contact with the mounting pins 40, 40 provided on the holding plate 22B, and in this state, the side surfaces of the projecting pieces 43, 43 are brought into contact with the mounting pins 40, 40 provided on the holding plate 22B.
0, and when the filaments 7, 7 are properly positioned, the projecting pieces 43, 43 are fixed to the mounting pins 40, 40 by spot welding.
Thereby, the light bulb capsule 1 is held on the holding plate 22B of the base body 21. In addition, the protruding piece 43,
By changing the side surface that contacts the mounting pins 40, 40 of 43, the positions of the filaments 7, 7 can be moved in the direction perpendicular to the axis (depending on whether the 43a, 43a side or the 43b, 43b side is in contact). Alternatively, the position can be adjusted depending on the rotation method (depending on whether it is brought into contact with the 43a side and the 43b side or the 43b side and the 43a side).

Third Embodiment FIGS. 7 to 9 show a third embodiment of the lamp with base of the present invention.

The third embodiment differs from the first embodiment only in the shapes of the holding plate and the metal band, and other parts are the same as those in the first embodiment. Therefore, the holding plate and metal band will be described in detail, and other parts will not be illustrated, or even if illustrated,
The same reference numerals as those used in the first embodiment will be used, and the explanation will be omitted.

The holding portion 24 of the holding plate 22C is formed with a mounting hole 44 having a size sufficient to allow the pinch seal portion 3 of the light bulb capsule 1 to be inserted therethrough. and,
Four mounting pins 45, 45, . . . are provided upright at positions close to the mounting hole 44.

46 is a metal band, which is attached to the pinch seal portion 3 of the bulb capsule 1 in a wound state. Attachment pieces 47, 47 are integrally provided from the lower end edges of the side pieces along the longitudinal direction of the metal band 46, which are bent at a substantially right angle and protrude laterally.
Two sleeves 48, 48, . . . are integrally formed on the mounting pieces 47, 47, respectively.

Therefore, the mounting pieces 47, 47 of the metal band 46
The cap body 21 is attached to the sleeves 48, 48... provided in the sleeves 48, 48...
A mounting pin 4 protruding from the holding plate 22C of
5, 45..., and then insert the sleeves 48, 4.
8... to the mounting pins 45, 45... to adjust the position of the filaments 7, 7, and when the filaments 7, 7 are correctly positioned, slide the sleeves 48, 48... onto the mounting pins 45, 45... The bulb capsule 1 is fixed to the cap body 21 by spot welding.

Effects of the Invention As is clear from the above description, the light bulb with a cap of the present invention has a light bulb capsule with a substantially flat pinch seal part provided at one end of a glass bulb with a filament sealed inside. is coupled to a holding plate fitted externally to the upper opening edge of the tube metal via a metal band body surrounding the metal band body, and the mounting member formed on the metal band body is erected on the top surface of the holding plate in the vertical direction. It is characterized in that it is fixed to a mounting member extending from.

Therefore, according to the present invention, since the light bulb capsule is attached and fixed to the base body through the metal band surrounding the pinch seal portion, when attaching the light bulb capsule to the base body, There is nothing that comes into contact with the glass bulb or the pinch seal portion, and as a result, damage to the bulb capsule when attaching the bulb capsule to the base body can be greatly reduced. In addition, since the mounting member of the metal band body is fixed to the mounting member that is erected on the upper surface of the holding plate of the cap body and extends in the vertical direction, the mounting member of the metal band body can be attached vertically with respect to the mounting member of the holding plate. By moving the filament while sliding it in the direction, it becomes easy to align the filament.

[Brief explanation of drawings]

Figures 1 to 3 show the first embodiment of the light bulb with base of the present invention, in which Figure 1 is an overall vertical sectional view, Figure 2 is an exploded perspective view of the main parts, and Figure 3 is an exploded perspective view of the main parts. A sectional view taken along the - line in Fig. 1, and Figs. 4 to 6 show a second embodiment of the lamp with a base of the present invention, Fig. 4 is a side view of the main part, and Fig. 5 is a sectional view taken along the - line. 6 is a sectional view taken along the - line in FIG. 4, and FIGS. 7 to 9 are exploded perspective views of the main parts.
Fig. 7 is a side view of the main parts, Fig. 8 is an exploded perspective view of the main parts, Fig. 9 is a sectional view taken along the line - in Fig. 7, and Figs. Fig. 12 shows an example of a conventional light bulb with a base, Fig. 10 is a partially cutaway side view, Fig. 11 is an exploded perspective view of the main part, and Fig. 12 is an enlarged sectional view of the main part. It is. Explanation of symbols, 1... Light bulb capsule, 2... Glass bulb, 3, 3E... Pinch seal portion, 7... Filament, 21... Cap body, 22A, 22B, 2
2C...Holding plate, 23...Cylinder metal, 36,4
0, 45... Attachment member (standing up on the upper surface of the holding plate), 37, 42, 46... Metal band body, 38, 43, 48... Attachment member (formed on the metal band body).

Claims (1)

[Scope of Claim for Utility Model Registration] A light bulb capsule, which has a substantially flat pinch seal portion at one end of a glass bulb with a filament sealed inside, is attached to a cylinder via a metal band surrounding the pinch seal portion. A cap characterized in that it is coupled to a holding plate externally fitted on the upper opening edge, and that a mounting member formed on the metal band body is fixed to a mounting member that is erected on the upper surface of the holding plate and extends in the vertical direction. Comes with a light bulb.