JPH0328471Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is used for display decoration lights and neon signs that are attached to glass surfaces such as store windows, or for braking devices that are attached to back windows and side windows of automobiles. It relates to light-emitting display bodies used in lamps, decorative lights, etc.

(Prior Art) The present applicant has developed such a light-emitting display by arranging a large number of light-emitting elements in a row and connecting them to a plurality of conductive wires, and using a rod-shaped resin whose light-emitting surface is transparent at least. Various types of bendable light-emitting displays have already been proposed which are entirely encapsulated in a flexible envelope consisting of a filler.

These light-emitting displays can be bent in any direction,
Although it is convenient because bending can be performed freely, there are still some points that need to be improved as described below.

(Problem to be solved by the invention) In other words, the above-mentioned light-emitting display body bends by utilizing its own flexible elasticity, and it is difficult to bend the light-emitting display body in complex and minute bends or in large bends of 90 degrees or more. In this case, a large resistance will be applied, which will impair the effect of allowing easy and free bending.Moreover, when this light-emitting display is mounted on the surface to be mounted via an appropriate mounting tool, a large resistance will be applied to this mounting tool. There was a risk that the mounting tool would come off the surface to which it was mounted due to the effect of elastic repulsion.

The present invention was devised to solve this problem, and while being able to bend into any shape,
It does not require a large force to bend, and can be bent easily and freely.Moreover, it does not receive large elastic repulsion while maintaining the bent shape, and as a result, the surface to which it is attached The object of the present invention is to provide a light-emitting display that can be easily and quickly attached to a device using a simple-structured fixture.

(Means for Solving the Problems) To this end, the present invention consists of a flexible envelope made of a rod-shaped resin filling whose light-emitting surface side is transparent, and a large number of conductive wires connected to each other. In a light-emitting display body formed by embedding light-emitting elements in a row,
The gist of the present invention is that cut grooves having an appropriate depth and long in the circumferential direction from the surface toward the center are formed in the flexible envelope at predetermined intervals in the length direction.

(Function) With this configuration, when this rod-shaped light emitting display is bent into an arbitrary shape such as a heart shape, among the cut grooves on both sides, the group of cut grooves on the inside of the bend closes, and the cut on the outside of the bend closes. The group of grooves opens and can be bent with little force and with little resistance.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a plan view showing an example of a light emitting display;
FIG. 2 is a cross-sectional view of the same, in which a large number of light emitting elements 1 are arranged in a row, the cathode side terminal 11 of each element 1 is connected to a conductive wire 21, and the anode side terminal 12 is connected to a conductive wire. 22 respectively,
A plug 23 and a socket 24 for connection are provided at each end of both conductive wires 21, 22. This insertion plug 23 protrudes outward from one end surface of the flexible envelope 3, which will be described later, and the socket 24 is embedded within the other end of the flexible envelope 3. The plug 23 and the socket 24 may be provided in one light-emitting display as shown in the figure, but since the present invention is of a type in which a plurality of light-emitting displays are connected and used, both ends of one group of light-emitting displays are provided. Both plugs 23
The other groups of light-emitting displays may have sockets 24 at both ends.

This light emitting element 1 is made of a solid state lamp as shown in FIG. 3, and includes a semiconductor chip 13 such as a known light emitting diode such as gallium arsenide (GaAs), gallium aluminum arsenide (GaAlAs), gallium phosphide (GaP), etc. Translucent thermosetting resin 1
A cathode side terminal 11 embedded in the chip 13 and an anode side terminal 12 connected to the chip 13 via a bonding wire 15 protrude to the outside.

On the other hand, the conductive wires 21 and 22 are both made of copper wire covered with an insulating film, and the connection portion with the light emitting element 1 is made into a bare wire by removing the insulating film, and this bare wire portion is Terminal 1 of light emitter element 1
1 and 12 are connected by means such as soldering. In addition, when using bare wires as the conductive wires 21 and 22, after connecting the connection terminals 11 and 12 of the light emitting element 1 by means such as soldering, apply varnish or the like made of various resins such as polyurethane resin. It may be used as an insulating film. Also, both conductive wires 2
1 and 22 may be simply arranged in parallel, but the sixth
The conductive wires 21 and 22 may be wound in a meandering manner as shown in the figure, or the conductive wires 21 and 22 may be spirally wound as shown in FIG. The tensile force can be absorbed and relaxed (compressive force acts on the conductive wire 22 or 21 which becomes inside when bent). The absorption and relaxation of elongation acting on the conductive wires 21 and 22 is not limited to this structure, and may be any structure.

These light-emitting elements 1... and conductive wires 21, 22 are embedded in the flexible envelope 3 so that the rows of light-emitting elements 1 are located along the center line, forming the intended light-emitting display. . The flexible envelope 3 has a flexible rod shape with a rectangular or circular cross section and is made of a resin filling (sealing resin) such as soft polypinyl chloride resin, acrylic resin, polyethylene resin, polycarbonate resin, silicone rubber, etc. The entire structure is translucent, and is preferably constructed so as to have light diffusing properties by containing a light diffusing agent or the like. However, it is not essential that the entire flexible envelope 3 be made translucent as in this embodiment; it is sufficient that at least the light-emitting surface side is made of a translucent material; It is desirable that a light reflecting layer 31 is formed in areas other than the light-transmitting part by using a resin mixed with a light reflecting agent such as aluminum flakes, or metal vapor deposition to increase the luminous intensity. Further, the flexible envelope 3 may be formed of a colored translucent resin to enhance the display effect.

The present invention provides a light-emitting display having the above-described structure, in which cut grooves 32...33 having appropriate depth and long in the circumferential direction from the surface to the center are provided on both sides of the flexible envelope 3 following the light-emitting surface side. ... are formed at predetermined intervals in the length direction, so that when the light emitting display body is bent, substantially when the flexible envelope 3 is bent based on its own elasticity, each cut groove 32... 33... promotes the bending, that is, among the cut grooves 32...33 on both sides, the cut groove on the inside of the bend is closed, and the cut groove on the outside of the bend is opened, so that the flexible envelope 3 This allows bending to occur with less force and less resistance.

Note that the cut grooves 32 and 33 may be formed so that the groove width becomes larger toward the outside as shown in FIG. 5, so that the radius of curvature during bending can be further reduced. Further, the cut grooves 32...33... may be formed so as to face each other on both sides, but may also be arranged in a staggered manner as shown in FIGS. 6 and 7. Furthermore, when the cross-sectional shape of the flexible envelope 3 is circular, an annular cut groove 34 is formed over the entire outer periphery as shown in FIG.
You can also use it as

In this way, using flexible light-emitting display bodies as described above, each light-emitting display body is connected by inserting the plug 23 into the socket 24, as shown in FIG. 4, and can be bent into an arbitrary shape. For example, it is installed on the back window glass of a car or the front window glass of a store, and in this case,
As shown in the imaginary line in FIG. 1 and in FIG. 8, the flexible envelope 3
A plurality of suction cups 4, preferably made of transparent synthetic resin, are integrally formed on the light emitting surface side of the
The light-emitting display is attached to the back windshield of an automobile by adsorption to the inner surface of the back windshield. At this time, the suction cup 4...
By adjusting the adsorption position on the glass surface to the bent state of the light emitting display, any bent shape such as a heart shape can be maintained.

In providing the suction cup 4 on the flexible envelope 3,
As shown in FIG. 8, the suction cup 4 may be integrally formed at the same time as the flexible envelope 3 is formed, but it may also be formed separately, for example, as shown in FIG. Cylindrical protrusion 4 on the back side on the opposite side
1 is formed separately, and a through hole 51 into which the light emitting display is inserted and a circular recess 5 are formed separately.
a holder body 5 having a suction cup 2;
An annular groove 42 is formed on one of the protrusion 41 and a recess 52 of the holder body 5, and an annular rib 53 is formed on the other, and by fitting the annular rib 53 into the annular groove 42, the suction cup 4 is held in the holder. The holder body 5 may be rotatably supported, and a plurality of holder bodies 5 may be inserted into the light-emitting display body through the through hole 51.

In addition, when the light-emitting display body A is attached to the back window glass of a car and used as a decorative light of the car as described above, the conductive wires 21 and 22 are connected to the electric circuit of the brake lamp, so that when the brake pedal is depressed, , it may be configured to be lit together with the brake lamp, and serve as a decorative light that serves both the decorative function and the function of indicating when braking.

It is also natural that it can be used as a brake light to supplement a brake light without having the decorative function as described above.

(Effect of the invention) As explained above, according to the light emitting display according to the invention, a plurality of conductive wires are connected within a flexible envelope made of a rod-shaped resin filler whose light-emitting surface side is transparent. In the light-emitting display body formed by embedding a large number of light-emitting elements in a row, the flexible envelope is provided with cut grooves of an appropriate depth that are long in the circumferential direction from the surface toward the center. Since they are formed at intervals, these cut grooves can promote bending of the rod-shaped flexible envelope, and when bent, the cut grooves on the inside of the bend close, The cut grooves on the outside of the bending are opened and the light emitting display can be bent freely into a desired shape with a small force. In addition, maintaining this bent shape does not require large elastic repulsion forces, and it can be easily and quickly mounted to the surface to be mounted using a simple mounting device such as a suction cup. I was able to get it done.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view thereof, FIG. 2 is a vertical sectional view thereof, FIG. 3 is a vertical sectional view of the light emitting element, FIG. 5 to 7 are plan views showing another embodiment, and FIGS. 8 and 9 are longitudinal sectional views showing still another embodiment. 1... Light emitter element, 21, 22... Conductive wire, 3
...Flexible envelope, 32, 33, 34... Cut groove.

Claims (1)

[Scope of utility model registration request] In a light-emitting display comprising a large number of light-emitting elements connected by a plurality of conductive wires embedded in a row in a flexible envelope made of a rod-shaped resin filling whose light-emitting surface side is transparent. . A flexible light-emitting display, characterized in that circumferentially long cut grooves of appropriate depth are formed in the flexible envelope at predetermined intervals in the length direction from the surface toward the center.