JPS6319075B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an improvement in a plate lamp capable of providing a surface emitting effect.

BACKGROUND TECHNOLOGY By sandwiching a phosphor (luminous body) formed into a thin plate between two electrodes and applying an alternating current (or direct current) electric field to both electrodes,
It has been generally known for a long time that a luminescent effect (electroluminescent development) can be obtained. This type of electroluminescence phenomenon is now used in plate lamps, such as indicator lights, signs, and decorative light sources.However, in the case of plate lamps with conventional structures, part of the plate lamp is partially removed. The problem is that it is not possible to emit light or adjust the brightness partially.

Problems to be Solved by the Invention Namely, in the plate lamp of the conventional structure, as shown in FIG. Due to the fact that it is provided in a single piece,
causing the entire surface of the light-emitting layer a to emit light simultaneously;
Moreover, the brightness can only be adjusted.
The problem is that a portion of the light-emitting layer a is caused to emit light locally, and its brightness cannot be adjusted.

It should be noted that although it is possible to deal with the above-mentioned problems by pasting together multiple plate lamps with small light emitting surfaces, In this case, the wiring becomes complicated, and a new problem arises in that luminescent spots are formed on the luminescent surface.

In other words, when plate lamps are pasted together, it is necessary to minimize the gap formed by the edge portions (sealed portions) of the package film, so the edges must be overlapped and pasted. However, by overlapping and pasting the ear portions in this way, the brightness of the overlapping portions decreases, resulting in the problem of not being able to emit high-brightness light overall. .

The present invention is an attempt to improve the above-mentioned problems, and an object of the present invention is to cause a light-emitting body to emit light partially on its entire light-emitting surface,
Another object of the present invention is to obtain a plate lamp whose brightness can be adjusted.

The specific means and effects for solving the above-mentioned problems are as follows.

Means for solving the problem One side of the light emitter is polymerized by a single transparent electrode, while the other side of the same light emitter is polymerized with any size and shape. Then, the back electrode, which is divided into a plurality of sheets and formed, is polymerized.

Function By selecting an arbitrary back electrode and applying an alternating current between the back electrode and the transparent electrode, it is possible to cause only the portion corresponding to the back electrode to emit light, and to adjust its brightness.

Specific embodiments of the present invention will be described below with reference to illustrative drawings.

Embodiment 1 is a printed circuit board, and the board 1 is formed using an insulating film as a material, and one surface (back surface) thereof has respective back electrodes 4, which will be described later.
Lead wires 2 connected to the transparent electrode 7 and lead wires 3 connected to the transparent electrode 7 are wired with their respective terminals 2'..., 3' aligned in a row along one side edge of the substrate 1. . On the other surface (front side) of the printed circuit board 1, there are a plurality of back electrodes 4 having appropriate sizes and formed in a rectangular shape, with a slight clearance between each adjacent electrode. The above-mentioned lead wires 2 are connected to the back electrodes 4 by passing through the same printed circuit board 1.

A light emitter 6 is provided on the surface of the back electrodes 4 with an insulating heat-resistant film 5 interposed therebetween. The luminous body 6 is provided by processing powder made from raw materials such as zinc sulfide and zinc chloride into a thin plate shape, and the surface of the luminous body 6 is further made of a transparent material such as polyolephene. A transparent electrode 7 formed by polymerization is provided. An aluminum piece 8 is attached to the transparent electrode 7 along one side edge, and the aforementioned lead wire 3 passes through the substrate 1, the insulating heat-resistant film 5, and the light emitting body 6 to the aluminum piece 8. connection.

Also, a pair of package films 9, 9 are placed facing the surface of the transparent electrode 7 and the back surface of the substrate 1.
By sealing the peripheral edges of both films 9, 9, the substrate 1, the back electrode 4, and the terminals 2'..., 3' of the lead wires 2..., 3 are sealed.
The insulating heat-resistant film 5, the light emitter 6, and the transparent electrode 7 are provided so as to be sealed together.

Effects of the Invention The present invention is constructed as described above, and includes:
As mentioned above, when a pair of electrodes are superposed with a light emitting body formed in a thin plate shape sandwiched between them, a single sheet is formed on one side of the light emitting body to have the same shape as the light emitting body. While polymerizing the electrode (transparent electrode),
On the other surface of the light emitting body, a plurality of divided electrodes (back electrodes) of arbitrary size and shape are provided by polymerizing, and an arbitrary electrode is selected from the plurality of back electrodes. By applying a charged voltage between the same electrode and the transparent electrode, it is possible to emit light only from a portion of the entire surface of the light emitting body that corresponds to the arbitrarily selected back electrode, and its brightness can be adjusted. I was able to do it. In other words, it has become possible to cause the light emitter to emit light partially.

In this way, it has become possible to make a part of the light emitting body emit light arbitrarily, so that indicator lights,
In addition to being able to enhance its use as a light source for signs and decorations, it has also become possible to further expand its range of use, such as being able to use it as a back light for searching for new locations on maps.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a plate lamp according to the present invention with a portion thereof cut away, FIG. 2 is a rear view thereof, and FIG. 3 is an exploded perspective view thereof. FIG. 4 is an exploded view of the conventional structure. 1...Printed circuit board, 2...Lead wire, 2'...Terminal,
3... Lead wire, 3'... Terminal, 4... Back electrode, 5...
Insulated heat-resistant film, 6... Luminous body, 7... Transparent electrode,
8... Aluminum piece, 9... Package cage film.

Claims (1)

[Claims] 1. When a light emitting body formed in a thin plate shape is sandwiched between a pair of electrodes and a pair of electrodes are superposed, a single electrode formed with the same size as the light emitting body is provided on one side of the light emitting body. A plate lamp in which one electrode is polymerized, and on the other side of the light emitting body, a plurality of divided electrodes of arbitrary size and shape are polymerized.