JPH06272452A - Natural lighting window device - Google Patents

Abstract

PURPOSE:To improve constructing performance, detecting accuracy, and the like by disposing rain sensors, formed of transparent thin-film electrodes of comb-tooth shape, on the glass outdoor side of a natural lighting window so as to monitor the rainfall state, and driving the window into the closed state upon reaching the specified rain density. CONSTITUTION:Transparent thin-film electrodes 3 of comb-tooth shape are disposed on the surface of an outdoor side window glass 1 of double window glass or the like, and lead wires 4 are connected to a control device. The upper faces of the electrodes 3 are protected by a transparent protective film 5. When raindrops are stuck to plural electrodes 3, the electrostatic capacity change of the respective electrode faces is monitored in a time-sharing method to detect rain density. In the case of reaching the specified rain density, the control device drives a natural lighting window into the closed state. The rainfall state can be thereby detected efficiently with accuracy. Packing and construction become easy since there is no protruding part on the outside, and design can be also improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting window device. More specifically, the present invention relates to a daylighting window device having a rain sensor function, which can detect a rainfall state accurately and efficiently and can drive the daylighting window to close.

[0002]

2. Description of the Related Art Conventionally, in a roof portion of a house or the like, an electric drive system for automatically opening and closing a window (a) as shown in FIG. A daylighting window device (a) has been provided. As for this daylighting window device (a), one provided with a rain sensor (c) as shown in FIG. 7 has been provided so far.
Electric lighting window device (a) with such a rain sensor (c)
In the case of rain when the window (a) is opened, the rain sensor (c) can detect the raindrop and automatically drive the window (a) to close. Not forgetting to close it and preventing rain from entering the room.

The rain sensor (c) has, for example, a printed circuit board (e) on the surface of which a tooth-shaped electrode (d) is enlarged and shown in FIG. ), A change in electric resistance at the point A when a raindrop adheres to the surface) or a change in capacitance based on the difference in dielectric constant between water and air is detected, and the change is used to detect rainfall.

[0004]

However, for example, the conventional electric lighting window device with a rain sensor shown in FIG. 8 has a structure in which the rain sensor (c) is projected from the main body of the lighting window device (a). Therefore, there is a problem in that the shape of the cushioning material such as styrofoam is complicated as a problem in packaging the product, and the packaging work is troublesome. In addition, there is a problem that the rain sensor (c) may be damaged when it is installed on the roof surface of a house or the like, and at the same time, the appearance is not good.

Further, since there is generally only one rain sensor (c) and its detection area is small, raindrops hit the surface of the rain sensor (c) and adhere in the case of rainfall with low rain density. The probability of doing it becomes low. In addition, even if there is no fear of rain falling into the room, if raindrops accidentally adhere to the surface of the rain sensor (c), it will be detected and the lighting window device (a) will operate to activate the window. There is also a problem that (a) is closed, and the reality is that the accuracy of rain detection is not always satisfactory.

The present invention has been made in view of the above circumstances, and solves the drawbacks of the conventional daylighting window device.
It is an object of the present invention to provide an improved daylighting window device capable of accurately and efficiently detecting a rainy state and driving the daylighting window to close.

[0007]

In order to solve the above-mentioned problems, the present invention provides a rain sensor comprising a comb-shaped transparent thin film electrode on the outdoor surface of a window glass provided in a daylighting window. The present invention provides a daylighting window device. Further, in the present invention, a plurality of comb-teeth transparent thin film electrodes are arranged as a rain sensor on the outdoor side surface of the window glass, and the capacitance change of each electrode surface is time-divisionally monitored to determine the rain density. It is also one of preferred embodiments to include a control device that detects and drives the lighting window to close when the rain density reaches a prescribed level.

[0008]

[Operation] In the daylighting window device of the present invention, since the rain sensor consisting of the comb-shaped transparent thin film electrode is arranged on the outdoor side surface of the window glass provided in the daylighting window, packaging, construction, and design It does not get in the way, and the rainfall detection surface can have a large area. Further, not only the presence / absence of rainfall but also the rainfall state, that is, the rain density can be detected, and highly accurate rain detection can be efficiently performed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will now be described with reference to the drawings, and the daylighting window device of the present invention will be described in more detail. Figure 1a
And b are respectively a plan view and a cross-sectional view showing an example of a window glass portion in the daylighting window device of the present invention.

In this example, a comb-shaped transparent thin film electrode made of, for example, indium oxide or tin oxide is formed on the surface of the window glass (1) on the outdoor side of the window glass (1) (2) having a double structure. A plurality of (3) are arranged. This transparent thin film electrode (3) can be formed on the outdoor surface of the window glass (1) by an appropriate method such as sticking or vapor deposition. Lead wire (4) is drawn out from each transparent thin film electrode (3),
It is connected to the control device described later. Further, a transparent protective film (5) for protecting the transparent thin film electrode (3) is provided on the upper surface. The material of the protective film (5) is not particularly limited, and a suitable resin film having high transparency can be used.

In the present invention, a rain sensor is constituted by the transparent thin film electrode (3) described above. FIG. 2 is a circuit configuration diagram showing an example of a control device in the daylighting window device of the present invention. In the control device of this example, the CR connected to the sensor unit (6) composed of the plurality of transparent thin film electrodes (3) described above.
An oscillator circuit (7), a frequency divider circuit (8) and a CPU (9) are provided.

In order to detect a rain condition, for example, CP
With scan output 1 of U (9) turned on,
When the raindrop (10) adheres to the transparent thin film electrode (3) corresponding to the scan output 1 as illustrated in FIG. 3, the electrostatic capacitance between A and B is generated due to the difference in relative permittivity between water and air (80: 1). The capacity changes. Due to this change in capacitance, the time constant with the resistance R provided in the CR oscillation circuit (7) illustrated in FIG. 2 changes, and the oscillation frequency changes before and after the raindrops (10) adhere.

On the other hand, the frequency signal CR oscillated by the electrostatic capacitance C and the resistance R of the transparent thin film electrode (3) is
In consideration of the processing speed of (9), etc., pass through the frequency dividing circuit (8),
For example, it is divided into low frequencies and input to the CPU (9).
Then, the CPU (9) continuously samples, for example, the oscillation signal illustrated in FIG. 4, and measures the H + L time (T1) of the input signal by this continuous sampling. In the same manner, the next T2 is also measured and T2-T
Calculate 1. As illustrated in FIG. 3, when the raindrop (10) adheres to the transparent thin film electrode (3), the oscillation frequency changes as described above, and the oscillation signal has a time of H + L, for example, between T1 and T2. There is a difference in. Therefore,
When the calculated T2-T1> specified value (preset), the CPU (9) determines that the raindrop having the specified diameter is attached to the source oscillation portion C, that is, the transparent thin film electrode (3). In this way, the CPU (9) measures Tn and Tn−1 and measures Tn.
-Calculate Tn-1 repeatedly.

As shown in FIG. 2, since the scan output from the transparent thin film electrode (3) corresponds to the number of electrodes, the scan signal has a predetermined time as shown in FIG.
It is output in a time-sharing manner. As a result, the CPU (9) in FIG.
The oscillation signal from each electrode (3) is 1
The data will be input one by one in a time-divisional manner. Upon receiving the time-division oscillation signals from the respective transparent thin film electrodes (3), the CPU (9), as shown in the block diagram of FIG. Number of time (T) changes within the specified scan output time of each electrode> specified number of times b. Number of locations corresponding to B in one cycle of scan output illustrated in FIG. Scan output The number of cycles corresponding to b in the specified cycle> The presence or absence of the specified number of cycles is monitored in the specified cycle, and when all the conditions of a, b, and c are satisfied, it is the rainfall having the specified rain density. To judge. Then, based on this determination, the closing drive of the lighting window is performed.

As described above, in the daylighting window device of the present invention, since the rain sensor is constituted by the transparent thin film electrode provided on the outdoor side surface of the window glass, the rain sensor is packaged, constructed and designed as in the conventional case. Since it is not obstructive and is transparent, it can be placed on the surface of the window glass without obstructing the daylighting or the view. In addition, the rain detection area is greatly expanded, and rain detection can be efficiently performed on a wide range of detection surfaces. Further, not only the presence or absence of rainfall but also the rain density thereof can be detected, and the rainfall state can be accurately determined. The accuracy of rain detection is improved.

Of course, the present invention is not limited to the above examples. It goes without saying that various aspects are possible in details such as the structure of the lighting window device and the circuit configuration of the control device.

[0017]

As described in detail above, according to the present invention, there is provided a daylighting window device having a rain sensor function, which can detect a rainy state accurately and efficiently and drive the closing of the daylighting window. . It also eliminates packaging, construction and design issues.

[Brief description of drawings]

1A and 1B are respectively a plan view and a cross-sectional view showing an example of a window glass portion in a daylighting window device of the present invention.

FIG. 2 is a circuit configuration diagram showing an example of a control device in the daylighting window device of the present invention.

FIG. 3 is a circuit configuration diagram showing an enlarged view of a sensor unit in FIG.

FIG. 4 is a waveform diagram illustrating an oscillation signal.

FIG. 5 is a waveform diagram illustrating a scan signal.

FIG. 6 is a flowchart of rainfall determination in the control device.

FIG. 7 is a perspective view showing a conventional electric lighting window device with a rain sensor.

FIG. 8 is a perspective view illustrating the configuration of a rain sensor of the daylighting window device of FIG. 7.

[Explanation of symbols]

 1 Outdoor side window glass 2 Indoor side window glass 3 Transparent thin film electrode 4 Lead wire 5 Protective film 6 Sensor part 7 CR oscillation circuit 8 Dividing circuit 9 CPU 10 Raindrop

Claims (2)

[Claims] 1. A daylighting window device comprising a window sensor provided on a daylighting window, and a rain sensor made of a comb-shaped transparent thin film electrode provided on the outdoor surface of the window glass. 2. As a rain sensor, a plurality of comb-teeth-shaped transparent thin film electrodes are provided on the outdoor surface of a window glass, and the change in capacitance of each electrode surface is time-divisionally monitored to detect rain density. The daylighting window device according to claim 1, further comprising a control device for closing and driving the daylighting window when the specified rain density is reached.