JPH0243480A - Crime preventing window - Google Patents

Abstract

PURPOSE:To improve economical efficiency and durability by providing a transparent conductive film having slits on a conducting layer on top of a transparent plate, while providing an electrode composed of a thin layer of a conductive resin on each of both ends of the flow passage of electricity of the conducting layer. CONSTITUTION:A transparent conductive film in which a transparent thin film of a conductive material as a conducting layer 2 is provided on the surface of an organic polymer film while having slits 3 on the conducting layer 2, is provided on a rigid transparent plate 1 of a glass plate, etc. An electrode 4 composed of a thin layer of a conductive resin is provided on each of both end of the flow passage of electricity of the conducting layer 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a security window, and particularly to a security window using a conductive film.

In recent years, the proportion of glass windows has increased due to the improvement of the living environment and the purpose of daylighting, and the number of large-area glass windows has increased due to improvements in technologies such as alumina laminate and glass plate manufacturing technology.

Although this tendency is suitable for the above-mentioned purpose, it poses a very big problem from the perspective of crime prevention.

Various attempts have been made to improve the security performance of such large-area glass windows, but so far nothing has been achieved that is satisfactory in performance and durability.

The inventors of the present invention have conducted extensive research to obtain a window configuration that achieves this objective using transparent conductive films that have been conventionally used in touch panels and to reduce the load on air conditioning and heating. The invention has been achieved.

That is, the present invention comprises: 1. a rigid transparent plate; 2 a transparent conductive film bonded thereon and having slits in at least the conductive layer;
and electrode ridges made of a thin layer of conductive resin provided at both ends of the electrical flow path of the conductive layer.

2. The security window according to item 1, wherein the conductive resin is a thermoplastic resin mixed with conductive powder.

3. The security window according to paragraph 1, wherein the conductive resin is a thermosetting resin mixed with conductive powder.

4. The security window of paragraph 1, wherein the conductive resin is a conductive adhesive; and 5. The security window of paragraph 1, wherein the conductive resin is a hot stamping resin.

The rigid transparent plate 1 in the present invention may be made of any inorganic or organic material as long as it constitutes a transparent window, but a glass plate, which is a common window material, is most suitable.

Next, transparent conductive film? consists of a film-like substrate, for example, a transparent thin film (conductive layer) of a conductive material provided on the surface of an organic polymer film such as a polyester film. It has layers. In the present invention, the conductive layer side of the transparent conductive film Z may be bonded to the transparent plate, or the conductive layer may be bonded to the transparent plate. On the other hand, the conductive layer on the film substrate is provided with at least one or more insulating slits as described above. Many materials and methods for such conductive layers have been proposed for metal films, metal oxide films, and (metal film + metal oxide film); Society @[°Thin Film Handbook] December 10, 1982,
For Ohmsha, pages 494 onwards; [Nikkei Electronics J
, 1978, 10-30.

Nikkei McGraw-Hill Inc., October 30, 1978, and other publicly known techniques are exemplified.

Among these, those in which a thin film of indium and/or tin oxide or silver and/or gold is provided by the fincal paper deposition (PVD) method are preferred from the viewpoint of color tone and durability.

In the security window of the present invention, an insulating slit is provided in at least the conductive layer of the conductive film as described above, and electrode hills are provided at both ends of the electrical flow path formed by the insulating slit.

This electrode is formed from a thin layer of conductive resin, and preferred examples of the conductive resin include thermoplastic resins or thermosetting resins mixed with conductive powder.

Examples of thermoplastic resins include acrylic resins, polyester resins, vinyl chloride resins, polyolefin resins, rubber resins, and polyamide resins.

Thermosetting resins include epoxy resin, phenol resin,
Unsaturated polyester resin, urethane resin.

Examples include methamine resin, urea resin, alkyd resin, and the like.

The conductive powder is - Fine powder of metal or carbon is used in the film, for example, 8g, Au, Cu, carbon, Ni.
.

Pt, Pd, etc. are commonly used alone or in combination. The particle size is preferably o, oi to 10 μm.

The amount of conductive powder mixed is not limited as long as conductivity is achieved, but - 60% of the total conductive resin is mixed into the film.
-98%, preferably 80%-96%.

In the case of using a conductive adhesive (including a conductive paint), such a method for forming a conductive resin thin film can be carried out by applying the adhesive and drying and/or heating as necessary. At this time, it is preferable to install the lead wires at the same time.

On the other hand, when using the hot stamping method, an extremely simple method of providing electrodes from hot stamping foil by thermal transfer or the like can be adopted.

In this case the leads can be provided later.

As a specific example of the conductive adhesive (conductive paint), Dotai 1 of Fujiiro Kasei ■ (for example, D-362, 500゜5
50, 753, etc. or the same FC, FE, FA types, etc.);
In addition, II Tokuriki Chemical Research Institute Sylvest■; Kagura Paint (
Tama's E-3OLDER and E- include OTE, etc., and examples of hot stamping foil include Fujisei Rubber Industry ■
An example of this is the FE series manufactured by Fujifu 4-Ile ■.

A protective layer or a protective film may be provided on the conductive layer to protect the abrasion resistance and environmental resistance of the conductive layer.

Examples of the protective layer include organic polymer layers such as acrylic resin, urethane resin, epoxy resin, and acrylate resin, 5iOz, T! Examples include coating layers of non-conductive inorganic substances such as Oz, TiN, and TIC.

As the protective film, a thermoplastic resin film is generally employed, and examples thereof include films of polyester resin such as polyethylene terephthalate, polyolefin resin such as polypropylene, polyamide resin, polyacrylonitrile resin, and the like. These films may have their surfaces coated with the protective layer listed above.

Among these, those with low moisture permeability are preferred. Further, these films may have a conventionally known heat ray reflecting function. These may also be subjected to anti-glare treatment.

The transparent plate 1 is placed between the electrodes of the security window thus formed.
A weak current is applied to detect when at least a portion of the transparent conductive film is damaged and the conductive layer of the transparent conductive film bonded to the conductive layer is broken. Since this current is used for the purpose of detecting breakage, there is no need to actively raise the temperature of the transparent body itself, and therefore an extremely weak value may be sufficient. For example, it is 100 mA or less. A detector is connected to this electric circuit for detecting a change in resistance or a change in current caused by the rupture.

The security window of the present invention is preferably protected by providing a sealant on the end face in order to prevent disturbance of the electrical circuit due to infiltration of water removed by returning troops.

The security window of the present invention is in principle a transparent window.

Here, transparent includes not only a state in which transparency is extremely good, but also a state in which transparency is reduced, and a state in which there is no transparency but in which light can be let in. These may be colorless or even colored.

[Brief explanation of the drawing]

FIG. 1 is a plan view in which a transparent conductive film is attached to a transparent plate and electrodes are attached to a sleeve 1. FIG. FIG. 2 shows an example in which a large number of electrodes are attached. FIG. 3 is a sectional view of a portion where the electrodes are attached, and is an example in which the transparent conductive film is located on the transparent plate side. FIG. 4 shows an example in which the transparent conductive film is located on the transparent plate side of the substrate film, and shows two types of slit examples.

Claims (1)

[Claims] 1. A rigid transparent plate ¥1; a transparent conductive film bonded thereon and having at least a slit in the conductive layer; and both ends of the electrical flow path of the conductive layer; A security window with an electrode made of a thin layer of conductive resin. 2. The security window according to claim 1, wherein the conductive resin is a thermoplastic resin mixed with conductive powder. 3. The security window according to claim 1, wherein the conductive resin is a thermosetting resin mixed with conductive powder. 4. The security window according to claim 1, wherein the conductive resin is a conductive adhesive. 5. The security window according to claim 1, wherein the conductive resin is a hot stamping resin.