JPS5810317Y2 - Toumeimenjiyouhatsnetsutai - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a transparent sheet heating element in which a transparent conductive film is provided inside the hollow interior of double-glazed glass, which has good heat retention and sound insulation effects.

Traditionally, this type of heating element has been used to prevent glass fogging on the lids of freezer containers, but it has the disadvantage that the hollow interior of the double-layered glass easily fogs up, so large amounts of heating elements are constantly required to remove the fogging inside. electricity had to flow in to heat it.

In addition, electronic components such as thermostats and temperature fuses that control electricity supply to the conductive film were installed as a separate control unit separate from the multiple glasses, and this control unit became a bottleneck when installing various products. .

The present invention has been developed to eliminate such drawbacks.

An embodiment of the present invention will be described below with reference to the drawings.A transparent sheet heating element 1 is constructed by arranging two sheets of transparent (reinforced) glass 2, 2' with a slight gap between them and a hollow interior 6. .

That is, a transparent conductive film 3.3' is attached to the inside of at least one of the glasses 2, 2' (indium oxide (■n203) or tin oxide (Sn02) by a method such as vapor deposition, and the parallel sides thereof Electrodes 4at4b, 4a', 4b' are formed by applying silver paste or silver frit to the surface and baking, etc.

Furthermore, two pieces of transparent (reinforced) glass 2, 2' are put together with an insulating sealing frame 5 around the entire outside, and glued together around the entire joint surface, and dry air is sealed in the hollow interior 6. It will be done.

Thus, a multilayer transparent sheet heating element is constructed.

And the above electrodes 4a, 4b, 4a', 4b'
Lead wires 7, 7' are led out through the insulating sealing frame 5 or through the joint surface.

A thermostat 8 for controlling energization and a temperature fuse 9 are attached to one side of the multilayer transparent heating element 1, and as shown in FIG. 3, they are connected in series and connected to an AC power plug 10.

The heating element of the present invention has the above-mentioned structure, so when electricity is applied, the electrodes 4a, 4b and 4a'.

4b' (since the transparent conductive films 3 and 3' generate heat, the multilayer transparent sheet heating element 1 generates heat.

Moreover, since it does not become cloudy (because it contains dry air) and can be seen clearly, the amount of electricity applied can be reduced compared to conventional methods.

In addition, such a heating element 1 is used for the glass of a showcase due to its good heat insulation (heat retention) effect, and it is also used for the window glass of a vehicle for soundproofing since it is a hollow double-glazed glass. It is used extremely widely.

Incidentally, as shown in FIG.
The same effect can be obtained by attaching a transparent conductive film to a single sheet of transparent (strengthened) glass to generate heat.

The transparent planar heating element of the present invention has a hollow interior sealed with dry air, so the interior is less likely to become cloudy and has good transparency, and the amount of electricity applied can be reduced.

In addition, electronic components such as a thermostat and temperature fuse that control electricity supply to the transparent conductive film are housed using the space inevitably formed between the ends of the two panes of glass that extend outside the sealed frame. Since the overall size can be reduced and the configuration can be simplified, and the control section is integrated, the work when attaching it to various products is also simplified.

Furthermore, since the electronic component is provided as an extension of the glass provided with the conductive film, sensitivity to temperature is also good.

Moreover, since the temperature fuse, thermostat, etc., which are relatively prone to failure, are located outside the sealed frame, only the failed parts can be easily replaced and repaired, making it possible to use the product for a long period of time.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a transparent sheet heating element according to an embodiment of the present invention;
2 is a sectional view taken along the line AA' in FIG. 1, FIG. 3 is an explanatory diagram of wiring, and FIG. 4 is a sectional view of another embodiment. 2.2' glass, 3.3': transparent conductive film, 5: insulating sealing frame, 6: hollow interior.

Claims (1)

[Claims for Utility Model Registration] Two sheets of transparent glass are arranged with a transparent conductive film attached to the inside of at least one side with a gap between them, In the transparent planar heating element formed by combining the two pieces of glass with an insulating sealing frame, dry air is introduced into the hollow area surrounded by the insulating sealing frame. A transparent planar heating element comprising an electronic component for controlling electricity supply to the transparent conductive film between two sheets of transparent glass.