JPS614152A - Face type discharge illuminant - Google Patents

Abstract

PURPOSE:To perform even emission over all surfaces by providing discharge space that tightly encloses rare gas between two glass plates and then providing conductive face electrodes opposed to the discharge space on respective outer surfaces of both glass plates. CONSTITUTION:A film-type face electrode 5 on which transparent metal oxide such as tin oxide is baked is provided on the outer surface of a front glass plate 1 comprised with rectangular transparent plate glass. In addition, a transparent or opaque conductive surface electrode 6 is provided on the outer surface of a rear glass plate 2 comprised with the same material. Furthermore, a face-type discharge illuminant is formed by overlapping both glass plates 1 and 2, sealing all circumferential sections, and tightly enclosing rare gas such as neon, argon, or mercury vapor, etc. in discharge space 3 formed between them. As a result, by applying high frequency voltage between face electrodes 5 and 6, the rare gas in the discharge space 3 is excited and emits light and even emission can be obtained over all surfaces.

Description

[Detailed Description of the Invention] [Industrial Field of Application] [The present invention relates to a planar discharge luminous body used for lighting, illumination, etc.

[Conventional technology]

Conventionally, discharge light emitters for the above-mentioned uses have been produced by evacuation from a glass bulb or glass tube, which is then filled with a dilute gas such as neon, argon, mercury vapor, or a mixture of these. Or, most of them have electrodes attached to a glass tube, and in addition, a fluorescent substance is coated on the inner circumferential surface of a glass bulb or glass tube, and to some extent, the glass tube is bent into an annular shape. However, in recent years, soft surface illumination has been desired for interior lighting of buildings, etc., so the straight or linear discharge light emitters using the glass bulbs and tubes described above are not suitable for the outside of the light emitters. In many cases, a light diffusing plate made of plastic or the like is installed, and the development of a planar discharge luminous material is desired.6 □Then, as a planar discharge luminous material,
As shown in Publication No. 95, the mating surface of two glass plates has a large number of parallel independent fine discharge grooves, and a pair of grooves connected to both ends of these grooves and perpendicular to the fine discharge grooves. A discharge space with concentrated discharge grooves is provided, and electrodes such as rod electrodes are provided diagonally to the concentrated discharge grooves. The electrodes are placed facing each other in one position as far apart as possible in the discharge space, but the discharge occurs by connecting the electrodes at the shortest distance, making it difficult to reach the entire discharge space, making it difficult to obtain stable light emission. There was a problem.

[Problem that the invention seeks to solve]

The present invention aims to solve the above-mentioned problems and provide a planar discharge light emitter with a simple structure that can stably emit light throughout the discharge space formed between two glass plates.

[Means for solving problems]

In the planar discharge luminous body of the present invention, two glass plates are overlapped and sealed around the entire circumference, a discharge space filled with dilute gas is formed inside these glass plates, and the outer surface of one glass plate is sealed. A transparent or opaque conductive surface electrode is provided on the outer surface of the other glass plate to face the discharge space, and a transparent or opaque conductive surface electrode is provided on the outer surface of the other glass plate to face the discharge space.

[Effect]

As described above, this invention has a discharge space formed inside two glass plates sealed around the entire circumference, and a pair of 4 holes and 8 holes. -12-Eh. -By providing one-sided electrode,
When a voltage is applied between these electrodes, the distance between the electrodes is equal and short at any position in the discharge space, so a uniform and stable discharge can occur throughout the discharge space. It is possible to emit light evenly over the entire surface of the glass plate, and the structure is simple because there is no need to form fine discharge grooves on the glass plate.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In Figures 1, 2, and 3, 1 is a front glass plate;
Reference numeral 2 denotes a back glass plate, which is composed of a rectangular transparent plate glass, and the front glass plate 1 and the back glass plate 2 are overlapped in the thickness direction, and the outer periphery of these plates is covered with 7 pieces of glass over the entire circumference. It is sealed. A planar discharge space 3 is formed on the inner circumferential side of the seal between the front and back glass plates 1 and 2, and the discharge space 3 is evacuated and filled with a single dilute gas such as neon, argon, or mercury vapor or a mixed dilute gas. Gas is sealed. Further, a protrusion 4 is provided on one of the front and back glass plates 1 and 2 and located at a suitable position in the discharge space 3.
is supported by the other side to prevent the front and back glass plates 1 and 2 from being deformed or damaged due to the pressure difference between the reduced pressure inside the discharge space 3 and the outside air. A transparent conductive surface electrode 5 in the form of a film formed by baking a metal oxide such as tin oxide or indium oxide is provided on at least a part of the surface of the front glass plate 1, including the part facing the discharge space 3, and the back glass plate A conductive surface electrode 6 similar to the conductive surface electrode 5 of the front glass plate 1 is provided on at least a portion of the second surface including the portion facing the discharge space 3 .

In the planar discharge luminous body of the embodiment configured as described above, when a high frequency voltage is applied to the conductive surface electrodes 5 and 6, '8\! J gas is excited and emits light. Note 1
If fluorescent paint is applied to the inner surfaces of the front and back glass plates 1 and 2, which constitute the outer wall of the discharge space 3, these will also emit light. Then, the front and back glass plates 1 and 2 as described above are installed.
The discharge with the conductive surface electrode 5°6 open is uniformly and stably carried out over the entire planar discharge space 3, and the entire surface of the discharge space 3 can be uniformly illuminated.

In this invention, if the back glass plate also needs to transmit light, a transparent conductive surface electrode is provided on the back glass plate as in the above-mentioned embodiment. If this is not necessary, the rear glass plate may be provided with an opaque conductive surface electrode made of a metal thin film, a metal plate that also serves as a reflector, or a surface electrode made of metal foil. A surface constituting the main body of the planar discharge luminous body,
It is not necessary to directly form the conductive surface electrodes on the back glass plate by baking or the like, and conductive surface electrodes may be provided on other glass plates and brought into close contact with the front and back glass plates.

[Effects of the Invention] As explained above, the planar discharge light emitter according to the present invention has a discharge space formed inside two glass plates whose entire circumferences are sealed, and a discharge space formed inside the two glass plates, which are sealed together on the entire periphery. By providing conductive surface electrodes in each of the discharge spaces, it is possible to provide a device that can emit light evenly throughout the discharge space with a simple structure and at a low cost.

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a rear view thereof. 1.2... Glass plate, 3... Planar discharge space, 5.
6... Conductive surface electrode.

Claims (1)

[Claims] Two glass plates are stacked and sealed around the entire circumference to form a discharge space filled with dilute gas inside these glass plates, and a transparent conductive plate is placed on the outer surface of one glass plate facing the discharge space. 1. A planar discharge light-emitting body, characterized in that a transparent or opaque conductive surface electrode is provided on the outer surface of the other glass plate facing the discharge space.