JPH10144434A - Decorative electric light - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative electric light wherein a lead wire can be quickly smoothly inserted in a through hole, in the case of inserting the lead wire in the through hole, mounting in a support part of the lead wire can be stabilized, reliability and productivity of assembly can be markedly improved. SOLUTION: A lamp 10 and a support part 60 supporting the lamp 10 are provided, the support part 60 has a first columnar part 61 fitted to a tube part of a socket main unit and a second columnar part 62 protruded coaxially from the first columnar part 61, in the second columnar part 62, through holes 64, 64 protruding lead wires 12, 13 of the lamp 10 are formed in such a manner that center axes thereof and center axes of the lead wires 12, 13 are conformed and an internal diameter thereof is slightly larger than a diameter of the lead wire 12, 13, in both ends of a tip end face thereof a chamfered part 65, 65 is formed, in each chamfered part 65, a guide groove 65a, guiding the lead wire 12, 13 protruding from the through hole 64, 64 bent and stored, is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push-in type decorative lamp used for decorating a Christmas tree or the like.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show an example of a push-in type decorative lamp conventionally used for decorating a Christmas tree or the like. The electric lamp includes a vertically long light bulb 10, a support part 20 for supporting the light bulb 10, a socket body 30 for inserting and holding the support part 20, and a socket fitted and sandwiched in the socket body 30, and each of the tips Two conductors 4 provided with terminal plates 41 and 42
3, 44.

The bottom portion 11 of the light bulb 10 is provided with two lead wires 12 and 13 extending outward and parallel to each other, and the support portion 20 has a concave portion 21 for mounting the bottom portion 11 of the light bulb 10. And through holes 22, 23 communicating with the concave portion 21 and penetrating these lead wires 12, 13.
Are drilled. The distal ends 12a, 13a of these lead wires 12, 13 are each bent outwardly and extend upward along the outer surface of the support portion 20. The socket body 30 is formed at its upper end with an opening 33 into which the support portion 20 can be fitted. On the inner surface of the opening 33, the conductors 43, 44 and their respective Locking grooves 34 and 35 for fitting and holding terminal plates 41 and 42 provided at the distal end are formed, and insertion holes 36 and 37 for inserting conducting wires 43 and 44 are formed at the lower end thereof.

In this lamp, the conductors 43 and 44 including the terminal plates 41 and 42 are inserted through the insertion holes 36 and 37 into the socket body 30.
Then, the terminal plates 41 and 42 and the conductive wires 43 and 44 are fitted into the locking grooves 34 and 35 to be sandwiched. Then, bulb 10
And the support portion 20 are integrated into a socket body 30
To the opening 33. Here, the lead wires 12 and 13
With the tip portions 12a and 13a extending upward along the outer surface of the support portion 20, the support portion 20 is fitted into the opening 33 and the terminal plate 41 whose rear surface is held by the socket body 30. , 42, respectively.

[0005]

By the way, in the above-mentioned electric lamp, the inner diameters of the through holes 22 and 23 formed in the support portion 20 are set so that the lead wires 12 and 13 of the bulb 10 can be easily inserted. It is customary that the diameters of the lines 12 and 13 are set to be larger by allowing for the clearance. In this case, although the insertion of the lead wires 12 and 13 into the through holes 22 and 23 is quick, the clearance between the lead wires 12 and 13 and the through holes 22 and 23 is large, so that there is no play between them. Therefore, there is a problem that the mounting of the lead wires 12 and 13 to the support portion 20 tends to be unstable. In this case, in particular, the tip 1 of each of these lead wires 12 and 13
When the 2a and 13a are bent upward along the outer surface of the support portion 20, deformation or the like is likely to occur.

The present invention has been made in view of the above circumstances, and allows a lead wire to be quickly and smoothly inserted into a through-hole. An object of the present invention is to provide a decorative lamp that can stably be mounted on a support portion, and as a result, can significantly improve reliability and productivity of assembly.

[0007]

SUMMARY OF THE INVENTION A decorative lamp according to the present invention comprises a light bulb and a support for supporting the light bulb. A first pillar having substantially the same outer shape along the direction, and a second pillar protruding coaxially with the pillar from the first pillar.
The second pillar portion has a through-hole for projecting each lead wire of the bulb supported by the support portion from the front end surface, and a central axis of the through-hole and the through-hole. Each of the lead wires is formed so as to coincide with the center axis of the lead wire and to have an inner diameter of the through hole slightly larger than a diameter of the lead wire. Each of the portions has a chamfered portion, and each chamfered portion has a guide groove for guiding, bending, and storing the lead wire of the bulb protruding from the through hole.

In this decorative lamp, the lead wires of the light bulb are projected from the tip of the second pillar portion of the support portion, and each lead wire is bent on both sides of the support portion through the guide groove of the chamfered portion. When the first and second pillar portions of the support portion are inserted into the cylindrical portion of the socket body, the respective lead wires exposed from the distal end surface to both side surfaces of the second pillar portion are restrained in the guide grooves, and Even if each lead wire comes into contact with the inner wall of the socket body during the insertion of the pillar portion, no displacement occurs due to frictional resistance between the two, and the second pillar portion can be more reliably brought into contact with the inner surface of the terminal plate. Therefore, as long as the lead wire is restrained by the guide groove, the lead wire is always in contact with the terminal plate, and there is no fear that the two may cause poor contact.

In addition, the chamfered portion is formed with a guide groove for guiding, bending and storing the lead wire of the light bulb, so that when the support portion is inserted into the cylindrical portion of the socket body, the inner surface of the socket body is formed. The terminal board and the terminal plate only come into contact with the chamfered portions located on both sides of the guide groove of the chamfered portion, and there is no possibility of contact with the lead wire bent by the chamfered portion. Therefore, when the support portion is inserted into the socket main body, there is no possibility that a load (a tensile load in a direction in which the lead wire is removed from the bulb) is applied to the lead wire located at the chamfered portion. Accordingly, disconnection of the lead wire, particularly the planting portion (the boundary portion between the light bulb and the lead wire) on the light bulb is prevented.

Further, the second pillar portion has a through hole for projecting each lead wire of the light bulb supported by the support portion from the front end face, and a central axis of the through hole and a central axis of the lead wire. Are formed so as to correspond to each of these lead wires so that the inner diameter of the through hole is slightly larger than the diameter of the lead wire. The gap between them is small, and play is less likely to occur between them, the mounting of the lead wire to the support portion is stabilized, and deformation or the like is less likely to occur even when the tip of the lead wire is bent. As a result, the lead wire can be quickly and smoothly inserted into the through hole, and the mounting of the lead wire on the support portion is stabilized. As a result, the reliability and the productivity of assembly are significantly improved.

By the way, in the bulb manufacturing process, when the filament is sealed in a glass bulb, the glass is heated to a high temperature and melted, so that the lead wire connected to the filament is heated during the melting. In particular, the lead wire of the portion to be planted on the glass sphere is deteriorated, and its tensile strength is significantly reduced. Therefore, when a tensile load is applied to the lead wire when the light bulb is inserted into the socket main body, there is a possibility that the bulb is immediately broken at the planting portion. Therefore, providing the guide groove in the chamfered portion so as not to apply a tensile load to the lead wire as described above has a very great effect in preventing the lead wire from breaking.

Further, usually, a large number of decorative lamps (for example, 100 to 200) are connected and used in series. Therefore, when a lead wire of one decorative lamp is broken, all of the decorative lamps are disconnected. Decoration lights can no longer be used, and
From the appearance, it is difficult to determine which of the many decorative lamps has a disconnection, and it is almost impossible in practice. Therefore, if a disconnection failure is found, all the decorative lights must be removed from the socket body for inspection, and the number of inspection steps becomes enormous. Moreover, since the decorative lamp is used for a Christmas tree or the like and is manufactured in units of tens of thousands, the reduction of disconnection can greatly improve the productivity as compared with conventional products. Things.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 5 show an embodiment of the present invention.
Is a socket body, reference numeral 60 is a support portion, and reference numeral 10 is a light bulb, and these constitute a decorative lamp of the present invention.

As shown in FIG. 1, the socket body 50 has a release portion 51 for fitting the support portion 60 at one axial end of the hollow columnar body, and at the other axial end of the hollow columnar body. A through-hole 52 communicating with the release portion 51 is formed, and the through-hole 52 is divided into two by a partition wall 53 having an opening at the tip end thereof along the axial direction.

The release portion 51 has a cylindrical portion 54 at one axial end of the socket main body 50 and a rectangular cylindrical portion 55 having a smaller cross-sectional area than the cylindrical portion 54 at the other axial end of the socket main body 50. The cross-sectional shape of the rectangular tube portion 55 is the same as the cross-sectional shape of the through hole 52. In the square tube portion 55, the terminal plates 41, 42 connected to the ends of the pair of conductive wires 43, 44 inserted from the outside of the through hole 52 into the inside are fixed in the mounting grooves. It has become.

The support portion 60 is a cylindrical member for supporting the electric bulb 10, and includes a cylindrical portion (first column portion) 61 fitted into the cylindrical portion 54 of the release portion 51 of the socket body 50; And a prism (second column) 62 that is provided at a lower end of the column 61 and is inserted into the prism 55. Further, as shown in FIGS.
On the upper surface of the bulb 10, the proximal end 1 of the light bulb 10 extends toward the prism 62.
1 is mounted on the bottom surface of the recess 63, and two through-holes 6 are formed on the bottom surface of the prism 62.
4,64 are perforated.

These through holes 64, 64
For inserting a pair of lead wires 12 and 13 respectively
The central axes of the through holes 64 and the lead wires
12 and 13 are aligned with the respective central axes, and these through holes 6
4, 64 has an inner diameter slightly smaller than the diameter of the lead wires 12, 13.
To each of these lead wires 12 and 13 so that
I am responding. In other words, each of the through holes 64, 64
Distance L between the center axes ₁But that of lead wires 12 and 13
Spacing L between each central axis_TwoSo that they almost match
Is set.

Further, chamfered portions 65, 65 are formed on both sides of the lower end surface of the prism portion 62, and each of the chamfered portions 65 is provided with a bulb 10 projecting outward through the through hole 64. The lead wires 12 and 13 are connected to the side surfaces 62 of the prism portion 62.
Guide grooves 65a are formed to bend toward the sides a and 62a to guide the lead wires 12 and 13 into the respective guide grooves 65a when the cylindrical portion 61 is inserted into the release portion. The depth of the guide groove 65a is set to be deeper than the diameter of the lead wires 12 and 13 of the bulb 10, and the terminal plates 41 and 4 provided in the socket main body 50.
The width dimension is smaller than 2.

The outer peripheral surface of the cylindrical portion 61 has a tapered shape which is slightly tapered toward the lower end, and is formed on both sides of the prism portion 62 (the lead wires 12 and 13 of the bulb 10).
Side surface on the side where the tip portions 12a and 13a are located)
62a, 62a have a tapered distal end slightly tapered from the outer peripheral surface of the cylindrical portion 61 toward the distal end, so that the prismatic portion 62 can be smoothly inserted into the rectangular tubular portion 55, and the cylindrical portion can be inserted into the cylindrical portion 54. 61 smooth insertions,
Further, good contact between the lead wires 12, 13 on both side surfaces 62a, 62a of the prism portion 62 and the inner surfaces of the terminal plates 41, 42 is enabled.

The decorative lamp having such a structure is assembled as follows. For the socket body 50, a pair of conductive wires 4 having terminal plates 41, 42 provided at the tips, respectively.
The rectangular tube portions 55 of the release portion 51 are
Then, the terminal plates 41 and 42 are attached to predetermined positions of the rectangular tube portion 55 so as to be parallel and opposed to each other. Further, with respect to the support portion 60, the base 1
1 and the leading ends 12a, 13a of the respective lead wires 12, 13 of the bulb 10 are inserted into the through holes 64, 6, respectively.
4 and protrudes outward from the prism portion 62, and these tip portions 12a, 13a are bent along the guide grooves 65a, 65a and the side surfaces 62a, 62a.

Next, the prism 62 at the lower end of the support part 60 is inserted into the prism 55 through the cylinder 54 of the release part 51 of the socket body 50. Here, first, the prism 6
The two chamfers 65, 65 are guided between the terminal plates 41, 42 located in the rectangular tube portion 55 and smoothly enter, so that the tapered side surfaces 62 a, 62 a continuing from the respective chamfers 65.
Are in contact with the inner surfaces of the terminal plates 41 and 42 and press the terminal plates 41 and 42 against the inner wall side of the rectangular tube portion 55 while the terminal plates 41 and 42
It will penetrate deep in between.

At this time, from the lower end surface of the prism portion 62 to both side surfaces 6
Lead wires 12 and 13 exposed over 2a and 62a
Of the guide grooves 6 of the chamfered portions 65
5A contact the inner surfaces of the terminal plates 41 and 42, respectively, so that the lead wires 12 and 13 do not displace from the side surfaces 62a and 62a of the prism 62, and each of the terminal plates 41 and 42 Contacts the inner surface of the in a stable state.

The bent portion of each of the lead wires 12 and 13 is a portion which receives a large frictional resistance between the outer wall of the rectangular tube portion 55 or the upper end of each of the terminal plates 41 and 42 in the related art. It is immersed in the guide grooves 65a, 65a and protected by the chamfers 65, 65, and does not receive frictional resistance and is not pressed. Therefore, the lead wires 12 and 13 are smoothly inserted between the terminal plates 41 and 42,
The contact with the inner surfaces of the terminal plates 41 and 42 is stabilized, and there is no possibility of being damaged. In addition, the cylindrical part 61 following the prism part 62
Is smoothly inserted into the cylindrical portion 54 and fits into the cylindrical portion 54 by the taper action of the outer surface of the cylindrical portion 61.

According to the decorative lamp of the present embodiment, the guide grooves 65a, 65a are formed in the chamfered portions 65, 65 on both sides of the lower end surface of the prism portion 62, respectively, and the tip portions 12a of the lead wires 12, 13 are formed. , 13a to guide grooves 65a, 65a
And since it was bent along the side surfaces 62a, 62a,
Lead ends 12a, 13a of lead wires 12, 13
Can be always restrained on both side surfaces 62a, 62a of the prism portion 62, and the lead wires 12, 13 can be connected to the terminal plate 4 respectively.
The prism 62 can be smoothly inserted between the terminal plates 41 and 42 while keeping the inner surfaces of the first and second 42 stable.

Therefore, the socket body 50 and the support portion 60 can be easily assembled together with the smooth insertion effect of the prism portions 62 and the cylindrical portions 61 into the square tube portion 55 and the cylindrical portion 54, and furthermore, the assembly is possible. In this case, poor contact between the inner surfaces of the terminal plates 41 and 42 and the lead wires 12 and 13 can be prevented.

In the through holes 64, 64, the respective central axes of the through holes 64, 64 coincide with the respective central axes of the lead wires 12, 13, and the inner diameter of the through holes 64, 64 is equal to the inner diameter of the lead. Since the lead wires 12 and 13 are made to correspond to each other so as to be slightly larger than the diameter of the wires 12 and 13, the gap between the lead wires 12 and 13 and the inner surfaces of the through holes 64 is small. The play between the lead wires 12 and 13 can be reduced, and the mounting of the lead wires 12 and 13 to the support portion 60 can be stabilized.
Even when bending 13a, deformation and the like hardly occur.

Therefore, the lead wires 12, 13 can be quickly and smoothly inserted into the through holes 64, 64, and the mounting of the lead wires 12, 13 to the support portion 60 can be stabilized. As a result, Reliability and assembly productivity can be significantly improved.

[0028]

As described above in detail, according to the decorative electric lamp of the present invention, the electric lamp includes the electric bulb and the supporting portion for supporting the electric bulb, and the supporting portion is fitted to the cylindrical portion of the socket body. A first column having substantially the same outer shape along the axial direction, and a second column protruding coaxially with the column from the first column. In the pillar portion, through holes are formed for projecting respective lead wires of the bulb supported by the support portion from the front end surface, and further, chamfered portions are formed at both end portions of the front end surface, and each chamfered portion is formed. Are formed with guide grooves for guiding, bending, and storing the lead wires of the bulb protruding from the through holes, respectively, so that when the first and second pillar portions of the support portion are inserted into the cylindrical portion of the socket body, Each lead wire exposed from the tip end surface of the second pillar portion to both side surfaces is guided. Even when each lead wire abuts on the inner wall of the socket body during the insertion of the second pillar portion, it is possible to prevent the displacement due to the frictional resistance between the two, so that the terminal plate and the lead wire can be prevented. Poor contact with the device can be prevented.

Further, when the support portion is inserted into the cylindrical portion of the socket body, the inner surface of the socket body and the terminal plate only come into contact with the chamfered portions located on both sides of the guide groove of the chamfered portion. The bent lead wire does not come into contact with the inner surface of the socket body and the terminal plate. Therefore, when inserting the support portion into the socket body, a load is applied to the lead wire located at the chamfered portion (the lead wire is removed from the bulb). Directional tensile load) can be prevented beforehand, thereby significantly reducing the disconnection of the lead wire, particularly the disconnection of the portion planted in the bulb. This means that the productivity can be greatly improved in consideration of the fact that the decorative lamp of the present invention is used for Christmas trees and the like and is manufactured in units of tens of thousands. It is beneficial.

Further, the through holes are formed such that the center axis of the through hole coincides with the center axis of the lead wire and the inner diameter of the through hole is slightly larger than the diameter of the lead wire. Are formed so as to correspond to each of the lead wires, the gap between the lead wires and the inner surface of the through hole is small, and the play between them can be reduced. Can be stabilized, and deformation or the like is unlikely to occur even when the tip of the lead wire is bent. Therefore, the lead wire can be quickly and smoothly inserted into the through hole, and the mounting of the lead wire on the support portion can be stabilized. As a result, the reliability and the productivity of assembly can be significantly improved. it can.

[Brief description of the drawings]

FIG. 1 is an exploded view showing a decorative lamp according to an embodiment of the present invention.

FIG. 2 is an assembly view showing a decorative lamp according to one embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a part of the decorative electric lamp according to the embodiment of the present invention in which a light bulb and a support portion are assembled.

FIG. 4 is an exploded view showing an assembling portion of the electric bulb and the supporting portion of the decorative electric lamp according to the embodiment of the present invention.

FIG. 5 is an exploded view showing a conventional decorative lamp.

FIG. 6 is an assembly view showing a conventional decorative lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Bulb 11 Base end 12, 13 Lead wire 12a, 13a Tip 41, 42 Terminal board 43, 44 Conductor 50 Socket main body 51 Release part 52 Through hole 53 Partition wall 54 Cylindrical part 55 Square cylinder part 60 Support part 61 Column part ( 62st prism (second pillar) 62a side surface 63 recess 64 through hole 65 chamfer 65a guide groove

Claims (1)

[Claims] 1. A first post comprising: a light bulb; and a support portion for supporting the light bulb, wherein the support portion is fitted to a cylindrical portion of a socket body and has a first column having substantially the same external shape along an axial direction. And a second pillar protruding from the first pillar coaxially with the pillar, and the second pillar has a lead wire of a bulb supported by the support. So that the center axis of the through hole coincides with the center axis of the lead wire, and the inner diameter of the through hole is slightly larger than the diameter of the lead wire. Each of the lead wires has a chamfered portion formed at both ends of the distal end surface thereof. Each of the chamfered portions guides, bends, and stores the lead wire of the bulb protruding from the through hole. A decorative lamp, wherein each of the guide grooves is formed.