JPH0518875Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a secondary lead wire attachment in an electroluminescent lamp, particularly an organic dispersion type electroluminescent lamp.

Conventional technology Organic dispersion type electroluminescent lamps are made by thermo-compressing and sealing an EL element with a flexible resin outer film, and are prized for their advantages of being flexible, lightweight, thin, and inexpensive. An example of its general structure will be explained with reference to FIGS. 5 and 6. In the electroluminescent lamp 1 shown in the figure, 2 is an EL element;
Reference numerals 3 and 4 are two transparent outer skin films made of fluorine resin or the like that sandwich and seal the EL element 2 from above and below. The EL element 2 is a laminate of the following 5 to 9,
5 is a back electrode of Al foil, 6 is a reflective insulating layer in which powder of a high dielectric constant and highly reflective material (barium titanate, etc.) is dispersed in a high dielectric constant organic material (cyanoethyl cellulose, etc.), and 7 is the same as above. organic matter
ZnS: A light-emitting layer in which phosphor powder such as Cu is dispersed.
8 is a transparent electrode such as ITO, and 9 is a resin sheet such as polyester that serves as the base material of the transparent electrode 8. One end of band-shaped leads 10 and 11 made of phosphor bronze is electrically connected to each of the back electrode 5 and the transparent electrode 8, and both leads 10 and 11 are led out from the EL element 2. The two outer films 3 and 4 are one size larger than the EL element 2, and have a low melting point adhesive layer (not shown) such as polyester formed on the inner surface, and sandwich the EL element 2 from above and below. EL element 2
The peripheral parts that protrude further are bonded together by thermocompression to airtightly seal the EL element 2.

The electroluminescent lamp 1 having the above structure is equipped with a secondary lead wire mounting body according to the user's request.
As shown in the figure, there is one in which the outer skin films 3', 4' have a wider lead-out side. Figures 8 and 9
The figure shows a state in which a secondary lead wire attachment body 14 is attached to the widened portions of the outer skin films 3', 4'. This mounting body 14 has two through holes 13, 13 for eyelets on both sides, and is mounted on an insulating substrate 17 on which conductive patterns 15, 16 are formed.
A connector 20 made of synthetic resin that holds the secondary lead wires 18 and 19 is fixed, and the ends of the leads 10 and 11 from the EL element 2 as well as the secondary lead wire 18 and
19 indicates conductive patterns 15 and 16 on the insulating substrate 17
It is electrically and mechanically connected to both ends of the board via solders 21a, 21b, . . . .

Problems to be Solved by the Invention The secondary lead wire attachment body 14 is attached to the outer skin films 3', 4' in the following manner.
First, the outer skin films 3' and 4' are positioned using the corners of an L-shaped positioning jig (not shown), and then the double-sided tape 22 is pasted at important points, and the insulating substrate 17 is is positioned on the outer skin film 3' and temporarily fixed. Next, through-holes 13 are simultaneously made in the outer films 3, 4 and the insulating substrate 17, and the eyelets 23, 23 are inserted into the through-holes 13, 13, and the insulating substrate 17 is inserted into the outer films 3', 4'. Fixed and integrated. Then, the leads 10 and 11 led out from the outer skin films 3' and 4' are connected to the conductive pattern 1.
5 and 16 are electrically and mechanically connected via solders 21a and 21a. After that, insulating substrate 1
Place the connector 20 on top of the secondary lead wire 1.
8, 19 and the ends of the conductive patterns 15, 16 are electrically and mechanically connected via solders 21b, 21b to complete the mounting. If necessary, an insulating tape is pasted on the substrate 17 to cover conductive parts such as the leads 10, 11, conductive patterns 15, 16, etc., and to electrically insulate them.

As mentioned above, the conventional installation work of the mounting body 14 includes complicated processes such as soldering at multiple locations and eyelet hammering, which requires a large number of man-hours, is time-consuming, and has extremely poor assembly workability. There was a problem that this amount led to an increase in costs. Furthermore, with the conventional positioning jig, the outer skin films 3', 4' tend to be misaligned on the jig, making it difficult to ensure the mounting accuracy of the substrate 17.

Therefore, an object of the present invention is to provide a secondary lead wire attachment structure that can be attached and detached in one-touch manner without complicated processes such as soldering and eyelet punching.

Means for solving the problem This invention was proposed in view of the above problem, and the technical means to solve this problem are
In a secondary lead wire attachment body for an electroluminescent lamp in which the peripheral edge of an outer skin film for hermetically sealing an EL element is clamped and fixed between an engaging protrusion and an engaging recess, the secondary lead wire attachment body is The peripheral edge of the outer skin film has a tongue piece having an engaging protrusion that passes through a through hole drilled in the peripheral edge of the outer skin film in which no lead is built-in, and an engaging recess into which the engaging protrusion fits. a base having protrusions facing each other on both ends of one side, which are clamped and fixed from above and below by pressing, and a lead of an electroluminescent lamp is crimped to one side of the base, which is integrated with the base;
This is a secondary lead wire attachment body for an electroluminescent lamp, characterized in that it is provided with a connector for leading out a secondary lead wire on the other side.

Function To attach the above secondary lead wire attachment body to the outer skin film, insert the lead of the EL element into one side of the connector,
First, the base is fixed to the outer skin film by pressing the protrusion from above and below, and then the lead is crimped onto one side of the connector to electrically connect it to the secondary lead wire. Therefore, the conventional soldering work has been changed to crimping the leads and connectors, and the work of hammering eyelets into the outer skin film of the board has been changed to one-touch pressing work, which greatly reduces the work required to attach the mounting body to the outer skin film. It is simplified to In addition, since the fitting part of the protrusion that is pressed and fixed and the connecting part (lead crimping part) between the elastic lead and the secondary lead wire are not combined but are separate parts, conduction may occur due to deformation during handling. Defects can be prevented. Further, the lead crimping portion has a large contact area and is crimped, so that conduction is ensured.

Embodiment An embodiment of the secondary lead wire mounting structure for an electroluminescent lamp according to the present invention will be described with reference to FIGS. 1 to 4. However, the same parts as in FIGS. 5 to 7 are given the same reference numerals and their explanations will be omitted.
1 and 2 are a plan view including a partial cross section of the secondary lead wire attachment body 31 according to the present invention, and A of FIG. 1.
3 and 4 are a sectional view taken along the line B--B and a sectional view taken along the line C--C in FIG. 2.

In the same figure, 32 is a U-shaped base in plan,
A pair of flexible tongue pieces 3 arranged above and below with a gap slightly larger than the thickness width of the outer skin films 3' and 4'.
Projections 35 consisting of 3 and 34 are provided oppositely on both ends of one side. An engaging protrusion 33a and an engaging recess 34a into which the engaging protrusion 33a is press-fitted are formed on each of the free ends of the tongue pieces 33, 34, and the outer skin film 3',
4' is inserted between both tongue pieces 33, 34 and pressed from above and below, the engaging protrusion 33a engages the outer skin film 3',
4' through the through holes 36, 36, and the engaging recess 3.
4a, and as a result, the outer skin film 3',
Grip 4' firmly. 32a is a cover integrated on the other side of the base 32. However, in order to prevent the tongue pieces 33 and 34 from breaking when pressed, the base 32
The material is selected from synthetic resin, rubber, etc. with appropriate flexibility. 37 is the outer skin film 3';
This is a connector for crimping the leads 10 and 11 led out from 4', and has a lead crimping part 37a on one side, and a secondary lead wire 37b is led out on the other side. The secondary lead wire 37b side is embedded and integrated into the base 32.
Although not shown, it is safe to insulate all or part of the lead crimping portion 37b with a soft insulating material such as vinyl chloride.

To attach the secondary lead wire attachment body 31 having the above structure to the outer skin films 3' and 4', insert the outer skin films 3' and 4' between the tongue pieces 33 and 34, and simultaneously insert the leads 1 and 4'.
0 and 11 are inserted into the lead crimping portion 37a of the connector 37, first press the tongue pieces 33 and 34 from above and below, and use the tongue pieces 33 and 34 to press the outer skin film 3',
4' firmly to fix the base 32 to the outer skin films 3', 4', and then tighten the lead crimping part 37a.
The leads 10 and 11 are electrically connected to the secondary lead wire 37b by pressure bonding.

Note that the shape of the connector 37 in the above embodiment is not limited, and in particular, the shape of the lead crimping portion may be any shape that allows the lead to be crimped.

Effects of the invention According to the invention, the secondary lead wire can be attached to the outer skin film by one-touch crimping using pressure from above and below, omitting the conventional soldering work and eyelet hammering work. provide structure,
Reduces man-hours during installation work. Therefore, assembly workability can be significantly improved, and costs can be reduced. Furthermore, the mounting accuracy of the mounting body is highly accurate and reliable. In addition, electrical continuity during handling is reliable, and reliability is high.

[Brief explanation of the drawing]

1 and 2 are a plan view including a partial cross section showing an embodiment of the secondary lead wire mounting structure according to the present invention, and a sectional view taken along the line A-A in FIG. 1, and FIG. 2 is a cross-sectional view taken along the line B-B in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line CC in FIG. FIG. 5 is a plan view showing an example of an electroluminescent lamp, FIG. 6 is a sectional view taken along the line D-D in FIG. 5, FIG. 7 is a plan view showing another example of an electroluminescent lamp, and FIG. and FIG. 9 are an enlarged perspective view and an enlarged sectional view of a main part showing a secondary lead wire attachment body of a conventional electroluminescent lamp. 2...EL element, 3', 4'...outer film,
10, 11... Lead, 31... Secondary lead wire attachment body, 32... Base, 33, 34... Tongue piece, 3
3a...Engaging protrusion, 34a...Engaging recess, 35...
...Protrusion, 36...Through hole in outer skin film, 37
...Connector, 37a...Lead crimping part, 37b...
...Secondary lead wire.

Claims (1)

[Scope of Claim for Utility Model Registration] A secondary lead wire mounting body for an electroluminescent lamp in which a peripheral edge of an outer skin film for hermetically sealing an EL element is clamped and fixed between an engaging protrusion and an engaging recess, comprising: The mounting body includes a tongue piece having an engaging protrusion that passes through a through hole drilled in the peripheral edge of the outer skin film in which the lead of the electroluminescent lamp is not built-in, and an engaging recess into which the engaging protrusion fits. a base having protrusions on both ends of one side facing each other, which clamp and press-fix the peripheral edge of the outer skin film from above and below; 1. A secondary lead wire attachment body for an electroluminescent lamp, comprising a connector for leading out a secondary lead wire on the side thereof.