JPH0132067Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement of a bendable light-emitting display body previously proposed by the applicant in Utility Model Application No. 57550/1983.

Prior Art A light-emitting display proposed by the present applicant in Utility Application No. 59-57550 consists of electronic light-emitting elements such as light-emitting diodes arranged in a row, with the light-emitting surface side made of a translucent material. It is encapsulated in a flexible synthetic resin encapsulant, allowing for a light-emitting display of any length and shape, and requires less man-hours for installation when used in so-called decorative lights for displays, neon signs, etc. It had the advantages of low power consumption, long life, and low total cost.

Problems to be Solved by the Invention The present invention provides an improvement to the bendable light-emitting display described above, and in particular provides a durable structure that can adequately protect the light-emitting elements against bending and twisting. The object of the present invention is to provide a light-emitting display body.

Means for Solving the Problems The present invention, provided to solve the above object, consists of a core material made of a translucent flexible resin material in which luminous elements are arranged in rows and sealed in advance. A spiral or meandering current-carrying member is provided around the outer periphery of the light-emitting elements, and at least the light-emitting surface side of the light-emitting elements is covered with a flexible synthetic resin encasing made of a translucent material. Its gist is to include the following.

Effects and Effects of the Invention According to the light-emitting display of the present invention, since the light-emitting element is preliminarily encapsulated within the translucent core material, the light-emitting element is doubled by the core material and the enveloping member. It has a protected structure and is strong against external forces such as bending and twisting.

Furthermore, since the light-emitting element is enclosed within a translucent core material and its mounting position is fixed, the light-emitting element will not shift position even when the light-emitting display is bent or twisted. There are advantages such as no

Further, since the current-carrying member for energizing the light-emitting element runs in a spiral or meandering manner around the outer periphery of the core material, the current-carrying member itself has elasticity. Therefore, when the light-emitting display body is bent or twisted, stress is hardly applied to the light-emitting element, and the risk of breakage of the light-emitting element during use is reduced.

Embodiment of the invention An embodiment of the invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a first embodiment of the light-emitting display, and FIG. 2 is a cross-sectional view taken along the line -2.

Solid-state lamps 2 (semiconductor chips encapsulated in thermosetting resin) are arranged in rows as light-emitting elements and are enclosed within a core material 1 made of a translucent and flexible resin material. The cathode lead 2 of the solid lamp 2 protrudes from the outer peripheral surface of the core material 1.
1 and the anode side lead 22 are connected by brazing to linear conductors 31 and 32 constituting a current-carrying member that is spirally wound around the outer periphery of the core material 1 with an appropriate gap between them.

The structure formed in this way is
The entire structure is covered and encapsulated with a transparent flexible synthetic resin and encapsulated in a flexible synthetic resin envelope 4.

Note that lead wires 3a and 3b are connected to the terminal ends of the linear conductors 21 and 22 and protrude from the tip of the light emitting display body A, and are connected to an external power source to energize the current-carrying members 21 and 22.

Here, the core material 1 is a transparent flexible resin material,
For example, flexible epoxy, flexible acrylic, silicone rubber, etc. are preferably used, and in the case of the solid lamp 2 shown in the figure, it is necessary to encapsulate the solid lamp 2 in the center of the core material 1 for light emitting display. This is desirable in that it improves the bendability of the body A, strengthens the protection of the solid lamp 2, and prevents the installation position from shifting, especially when the solid lamp 2 is installed in the center of the core material 1. , when the light emitting display body A is bent, the solid lamp 2
This has the advantage of minimizing stress due to distortion, etc.

However, the solid lamp 2 should not be limited to being included in the center of the core material 1.

Furthermore, although the flexible synthetic resin envelope 4 is entirely made of a transparent material in the embodiment, it is only necessary that at least the light-emitting surface side of the light-emitting element 4 is made of a translucent material. A light dispersing agent and a coloring agent may be mixed as necessary.

In addition, when constructing the envelope, if the entire envelope is made of a translucent resin material, the light emitted from the luminous body can be diffused in a 360 degree direction. It is particularly desirable to incorporate a dispersant in order to increase luminous efficiency.

Furthermore, in the embodiment, the current-carrying member is made up of two linear conductors and is wound spirally around the outer periphery of the core material 1, but when such a member is used, Even if the envelope 4 is bent at an arbitrary point, the curvature of the current-carrying member at the bending point is averaged, which may cause the current-carrying member to break or cause distortion in the flexible synthetic resin envelope 4. This has the advantage that it is possible to prevent this from occurring, and that it is possible to obtain a light-emitting display with a structure that is particularly strong against bending.

Furthermore, when configuring the light-emitting display of the present invention, the number of current-carrying members may be increased to three or more as necessary, and the light-emitting elements to be lit can be arbitrarily selected, and the lighting patterns thereof may be varied in various ways. It's okay. Further, the cross-sectional shape of the light-emitting display body A can be formed into any shape other than the circle shown in the figure, such as an ellipse or a polygon.

FIG. 3 shows a second embodiment of the present invention, in which the current-carrying member for energizing the light-emitting element is a flat conductor 31',
32', and is wound around the outer periphery of the core material 1 at an appropriate interval. Portions corresponding to those in the first embodiment are given the same reference numerals.

In the case of such an embodiment, since the current-carrying members are flat conductors 31' and 32', their adhesion to the core material 1 is better than in the case of using linear conductors. , it can be reliably and easily attached to the outer peripheral surface of the core material 1. Therefore, even when the light-emitting display body A is bent or twisted, the current-carrying member has a structure that does not easily shift its position, and combined with the fact that it is wound in a spiral, As a result, a light-emitting display with a particularly strong structure can be obtained. In addition, in the case of such an embodiment, since the current-carrying member is a flat conductor, the outer diameter of the light-emitting display can be made smaller than in the case of a linear conductor, and the curvature when bent can be reduced. can be increased, the bendability of the light emitting display can be further improved.

Note that the current-carrying member used in the light-emitting display of the present invention is not limited to the one wound spirally around the outer periphery of the core material 1 as described above; It may also be configured by running it in a shape.

That is, in the one shown in FIG. 4, the anode side and cathode side current-carrying members of the solid lamp 2 are attached to the outer peripheries of the upper semicircular part and the lower semicircular part of the core material 1 made of a transparent and flexible resin material, respectively. Constituent lead wires 31, 3
2 in a meandering manner (in the figure, the current-carrying member 32 provided in the upper semicircle is shown as a broken line), and each lead terminal 21, 22 of the solid-state lamp 2 has a corresponding lead terminal 21, 22. Lead wires 31, 32
The core material 1 thus formed is entirely covered with a translucent heat-shrinkable tube to form an envelope 4'. .

It goes without saying that such a light-emitting display A also has the same functions and effects as the light-emitting display A described above.

FIG. 5 shows still another embodiment of the light emitting display A of the present invention.

That is, this device is constructed so that the solid lamps 2 are enclosed in transparent flexible heat-shrinkable tubes and arranged in a row, and the solid-state lamps 2 of the heat-shrinkable tube are placed at the positions where the solid-state lamps 2 are arranged. , holes 1'a are provided, and after inserting the solid lamp 2 into these holes 1'a, heat is applied to the heat-shrinkable tube to shrink it to form a core material 1'. Lead wires 31 and 32 forming a current-carrying member are wound spirally around the outer periphery of the core material 1', and the core material 1' thus formed is wrapped in a flexible synthetic resin envelope made of a translucent material. 4.It has a sealed structure.

In such an embodiment, the heat-shrinkable tube constituting the core material 1' may be filled with resin,
Further, instead of having a spiral shape, the current-carrying member may be configured to run in a meandering shape as shown in FIG. Furthermore, the flexible synthetic resin used in this case may be a non-shrinkable tube material that also serves as a mold for filling resin instead of the heat-shrinkable tube.

Furthermore, the flexible synthetic resin envelope 4 may be constructed using a heat-shrinkable tube, or may be constructed by filling such a heat-shrinkable tube or the above-mentioned non-heat-shrinkable tube with resin. It's okay.

It goes without saying that these configurations can be selected and combined as appropriate.

The light-emitting display A having the structure described above is formed into a rod-shaped body or a continuous rod having a predetermined size, and especially when it is formed like the latter, it can be wound around a drum (not shown) like an electric wire cord. When used, it is cut to any length and curved or bent into any shape. It goes without saying that the lighting pattern can be changed in various ways by selectively energizing the current-carrying members to selectively light any of the light-emitting elements 2 arranged in a row.

In the above embodiment, a plurality of solid-state lamps are arranged in one row, but they may be arranged in multiple rows depending on the purpose of use.

According to the present invention with the above structure, there are advantages as mentioned in the above-mentioned functions and effects, but due to the structural features of the present invention, the following basic points described in (1) to (5) are also provided. The effect is also produced.

(1) A light-emitting display of any shape can be obtained simply by bending or curving.

(2) Since it can be easily installed using adhesives, screws, etc., there is no need to mount each light emitting element one by one by soldering, and installation is extremely convenient.

(3) All the current-carrying parts necessary for the lighting and blinking operations of the light-emitting display are enclosed within the encapsulation.
That wiring effort is unnecessary.

(4) Each of the light-emitting elements is water-tightly sealed with a synthetic resin envelope, making it convenient for outdoor use. Because of these advantages, it can be suitably used by being attached to advertising letter lights as a substitute for neon signs, decorative lights for displays, and accident prevention guides for trucks and the like.

(5) When a light emitting diode is used as a light emitter, it emits beautiful light that is close to monochromatic light with a high degree of purity that is unique to the material, so it is particularly suitable for use as a decorative light for a display. There are no bulb burnouts, low power consumption, long lifespan, and low total cost.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention;
Fig. 2 is a sectional view taken along the - line, Fig. 3 is a perspective view showing another example of the invention, Fig. 4 is a plan view of another example of the invention,
FIG. 5 is a front view of still another example of the present invention. Explanation of the symbols: A is the light-emitting display of the present invention; 1 is the core material made of a translucent flexible resin material; 2 is the light-emitting element; 31, 31', 32, 32' are the light-emitting elements; The current-carrying member 4 is a flexible synthetic resin envelope.

Claims (1)

[Scope of utility model registration request] On the outer periphery of a core material made of a translucent flexible resin material that contains luminous elements arranged in rows in advance,
A current-carrying member running in a spiral or meandering manner is provided to conduct electricity to these light-emitting elements, and at least the light-emitting surface side of the light-emitting elements is entirely enclosed in a flexible synthetic resin envelope made of a translucent material. A bendable light-emitting display consisting of