JPH0615031U - LCD light control glass window - Google Patents

Abstract

(57) [Summary] [Structure] A liquid crystal light control glass 1 in which a liquid crystal material 4 that changes from transparent to cloudy or changes color depending on temperature is sandwiched between a plurality of glass plates 3, or such a liquid crystal material 4 is a glass plate. The liquid crystal light control glass 1 formed by depositing on three surfaces is combined with a heating device 2 for heating the liquid crystal light control glass, and the temperature of the liquid crystal light control glass 1 is changed by the heat of the heating device 2. , The transparency of the liquid crystal light control glass 1 is controlled. [Effect] The glass temperature of the liquid crystal light control glass can be easily raised by the heat from the heating device, and thus the cloudiness or discoloration of the liquid crystal can be accelerated. Also,
When you want to return the cloudiness to the original transparent state or to return the discoloration to the original state, you can simply stop heating the glass of the liquid crystal light control glass with a heating device, and it is especially suitable for applications such as partition walls. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquid crystal dimming glass window suitable for use in a window of a building or a partition wall of a building.

[0002]

[Prior art]

 In the conventional liquid crystal light control glass, as shown in FIG. 6, two glass plates 3 and 3 with a transparent conductive film are arranged at a slight interval so that the transparent conductive film 5 faces each other, and the liquid crystal material is interposed between them. In general, the transparent conductive film 5 is applied with a voltage to control the alignment direction of the liquid crystal to actively control white turbidity. In the case of this liquid crystal light control glass, when it is desired to make a portion to be clouded by liquid crystal, it is necessary to set it at the time of manufacturing in advance (for example, refer to JP-A-2-219025).

In this conventional liquid crystal light control glass, control of external conditions such as temperature and light has been performed by applying a voltage to each required glass region to make it cloudy. Therefore, because partial control of sunlight that changes with time is performed by means such as dividing the glass into small pieces and attaching a sensor or controller to each glass, the structure is complicated and also in terms of cost. It was at a disadvantage. Also, when using a large glass, it was forced to opaque even the parts where the opaque light did not need to be needed.

Further, as described above, two glass plates with a transparent conductive film are required to apply a voltage, which is disadvantageous in terms of cost because the number of parts increases.

[0005]

[Problems to be solved by the device]

 The present invention is intended to solve the above-mentioned drawbacks, and can easily change the cloudiness or coloring of the liquid crystal light control glass, and requires a glass plate on which a conventional transparent conductive film is formed. It aims to provide liquid crystal light control glass, which is more advantageous in manufacturing cost than light glass.

[0006]

[Means for Solving the Problems]

 The present invention has been made in view of the above problems of the prior art, and its structural feature is that a liquid crystal material that changes from transparent to cloudy or changes color depending on temperature is sandwiched between a plurality of glass plates. Liquid crystal light control glass, or a liquid crystal light control glass obtained by coating such a liquid crystal material on a glass plate surface, and a heating device for heating the liquid crystal light control glass. It is located in the liquid crystal light control glass window that controls the transparency of the liquid crystal light control glass by changing the temperature of the light control glass.

In the present invention, the heating device for heating the liquid crystal light control glass comprises an electrically heated glass plate provided with an electrically heated heater wire on the glass plate, or an electrically heated transparent conductive film provided on the glass plate. An electrically heated glass plate, a warm air heater, or other various heating devices can be used. Such a heating device is preferably provided in the vicinity of the liquid crystal light control glass so that the liquid crystal light control glass, particularly the glass surface thereof, can be heated by the heat of the electrically heated glass plate or the warm air of the warm air heater. . This heating device may be arranged so that the entire surface of the liquid crystal light control glass can be heated uniformly, or the heating device may be divided or a plurality of heating devices may be provided so that heating can be partially controlled. May be.

Further, an electrically heated glass plate as a heating device is used as at least one glass plate constituting the liquid crystal light control glass, and the glass plate constituting the liquid crystal light control glass and the electrically heated glass plate are combined. Alternatively, the front glass or the back glass of the liquid crystal light control glass may be provided with an electrically heated glass plate closely attached, spaced apart, or adhered. This has the advantages that the liquid crystal light control glass window does not become large and it is easy to use.

When an electrically heated glass plate using an electrically heated transparent conductive film is used as the electrically heated element provided on the glass plate, the transparency of the liquid crystal light control glass is not hindered, so that a good liquid crystal is obtained. A dimming glass window can be provided.

[0010]

[Action]

 In the liquid crystal light control glass of the present invention configured as described above, the glass temperature of the liquid crystal light control glass can be easily raised by the heat of the heating device, which accelerates clouding or discoloration of the liquid crystal. be able to. If you want to return the cloudiness to the original transparent state or to restore the discoloration, you can simply stop heating the glass of the liquid crystal light control glass with a heating device. Therefore, the transparency or color of the liquid crystal light control glass can be arbitrarily controlled as necessary.

[0011]

【Example】

 Hereinafter, the present invention will be described based on illustrated embodiments. 1 and 2 show an overall view of an example of a liquid crystal light control glass window in which a liquid crystal light control glass 1 and a heating device 2 are combined, and FIG. 3 shows transparent to cloudy depending on temperature. FIG. 4 shows a liquid crystal light control glass in which a liquid crystal material 4 that changes color is sandwiched between two transparent glass plates 3 and 3. FIG. FIG. 5 shows a liquid crystal light control glass in which a liquid crystal material 4 is adhered to or printed on the outdoor side surface of a transparent glass plate 3, and FIG. This shows a liquid crystal light control glass in which the liquid crystal material 4 to be changed is adhered to or printed on the indoor side surface of the glass plate 3.

The liquid crystal light control glass window in FIG. 1 uses an electrically heated glass plate provided with an electrically heated heater wire on the glass plate as the heating device 2, and this electrically heated glass plate is used as shown in FIG. The liquid crystal light control glass using the one glass plate 3 is used for at least one glass plate, and the glass plate which constitutes the liquid crystal light control glass and the electrically heated glass plate are used together. . Of course, the present invention is not limited to this, and the electrically heated glass plate may be adhered to the front glass or the back glass of the liquid crystal light control glass, or may be spaced apart or adhered. The electrically heated heater wire of the electrically heated glass plate described above may be a fine metal wire or a printed wire. The wiring pattern of the electric heating heater wire can be appropriately designed and selected so that an optimum heating pattern can be obtained, but may be linearly patterned with appropriate characters and patterns if necessary.

In the liquid crystal light control glass window in FIG. 2, a warm air heater is used as the heating device 2, and a warm air heater is used so that the warm air from the warm air heater hits the glass surface of the liquid crystal light control glass 1. Is disposed near the liquid crystal light control glass. In this example, the hot air outlet of the warm air heater may be provided so that the angle can be adjusted, or a plurality of hot air outlets may be provided.

As the liquid crystal material 2, a color-type lyotropic polymer liquid crystal whose color reversibly changes with temperature or a cloudy-type lyotropic polymer liquid crystal which reversibly changes its white turbidity with temperature is preferably used. To be done. The liquid crystal material is applied between two glass plates in a concentrated solution state or applied to the glass plate surface.

In FIGS. 4 and 5, a transparent and highly durable plastic film can be formed as a protective layer of the liquid crystal material 2 on the layer of the liquid crystal material 2 deposited on the glass plate surface.

[0016]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. Since the liquid crystal used in the present invention is a liquid crystal that changes from transparent to cloudy or changes color depending on temperature without the need to apply voltage, a glass plate with a transparent conductive film for voltage application is unnecessary. It is cost effective.

In the liquid crystal light control glass of the present invention, the temperature of the glass of the liquid crystal light control glass can be easily raised by the heat from the heating device, and thus the cloudiness or discoloration of the liquid crystal can be accelerated. . In addition, when you want to return the cloudiness to the original transparent state or to restore the discoloration to the original state, it is possible to stop heating the glass of the liquid crystal light control glass by the heating device. Therefore, the transparency or color of the liquid crystal light control glass can be arbitrarily controlled as required. For example, when the liquid crystal light control glass of the present invention is used for a partition wall in a building, etc., when it is desired to shield the light or to control the transparency, the liquid crystal light control glass is heated by a heating device. The liquid crystal can be made cloudy or colored so that the light can be shielded or the transparency can be controlled, and the original transparent state can be restored by stopping the heating by the heating device. Also, in the cold season of winter, the temperature of the liquid crystal light control glass due to sunlight may not be sufficient, and the light may not be shielded only by the heat of the sunlight.However, when the liquid crystal light control glass of the present invention is used. In addition, it is possible to reduce the glare caused by direct sunlight, by facilitating light shielding by additional heating by the heating device.

In addition, by using a metal wire, a printed wire, or a wire-like conductive heating heater wire similar to this as a heating device, the liquid crystal in the heater wire portion is heated to become cloudy or colored. This makes it possible to display partial characters, pictures, etc. Further, by finely patterning the heater wire, it is possible to freely control the part that becomes cloudy or colored. Further, when a warm air heater is used as a heating device, it is possible to carry out clouding or discoloration at an appropriate place or area simply by applying warm air to the glass surface that requires clouding or discoloration.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a liquid crystal light control glass window according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a structure of a liquid crystal light control glass window according to an embodiment of the present invention.

FIG. 3 is a partial cross-sectional view showing the structure of a liquid crystal light control glass according to an embodiment of the present invention.

FIG. 4 is a partial cross-sectional view showing the structure of a liquid crystal light control glass according to an embodiment of the present invention.

FIG. 5 is a partial cross-sectional view showing the structure of a liquid crystal light control glass according to an embodiment of the present invention.

FIG. 6 is a partial cross-sectional view showing the structure of a conventional liquid crystal light control glass.

[Explanation of symbols]

 1: Liquid crystal light control glass 2: Heating device 3: Glass plate 4: Liquid crystal material 5: Transparent conductive film

Claims (7)

[Scope of utility model registration request] 1. A liquid crystal light control glass comprising a plurality of glass plates sandwiching a liquid crystal material that changes from transparent to cloudy or changes color depending on temperature, and a heating device for heating the liquid crystal light control glass. The liquid crystal light control glass window is characterized in that the temperature of the liquid crystal light control glass is changed by heat from the heating device to control the transparency of the liquid crystal light control glass. 2. A liquid crystal light control glass comprising a glass plate surface coated with a liquid crystal material which changes from transparent to cloudy or changes color depending on temperature, and a heating device for heating the liquid crystal light control glass. The liquid crystal light control glass window is characterized in that the temperature of the liquid crystal light control glass is changed by heat from the heating device to control the transparency of the liquid crystal light control glass. 3. A liquid crystal light control glass window according to claim 1, wherein the heating device is an electrically heated glass plate. 4. The heating device is an electrically heated glass plate, and the electrically heated glass plate is at least one glass plate constituting the liquid crystal light control glass.
Alternatively, the liquid crystal light control glass window according to claim 2. 5. A liquid crystal light control glass window, wherein the electrically heated glass plate of claim 3 is an electrically heated glass plate formed by providing an electrically heated heater wire on the glass plate. 6. A liquid crystal light control glass window, wherein the electrically heated glass plate of claim 3 is an electrically heated glass plate obtained by providing an electrically heated transparent conductive film on the glass plate. 7. The liquid crystal light control glass window according to claim 1 or 2, wherein the heating device is a warm air heater.