JPH03144093A - Lighting window - Google Patents

Abstract

PURPOSE:To simplify structure by a method wherein a light transmitting panel formed by a polarizing plate member is moved in response to an amount of light collected to a solar battery located in juxtaposition to automatically regulate an amount of lighting for the interior of a room. CONSTITUTION:Panels 1 and 2 are formed by a plurality of light transmitting plate members superposed with each other. A power is generated in response to an amount of light collected to a solar battery 9, the panel 1 is rotated through a motor 5, a torque converter 4, and a gear 3, a relative polarizing angle between the panels 1 and 2 is changed to automatically regulate a light transmission amount. This constitution reduces a running cost.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention involves attaching a light-transmitting panel, such as a glass plate, to the opening of a rectangular or circular window, and allowing external light to enter the room through the panel. This relates to a window that lets in sunlight.

(Prior art) This type of daylighting window is constructed by fitting the above-mentioned panel into the window frame, or by embedding the edge of the panel into the wall, and the amount of light entering the room can only be adjusted by using curtains. , Turaint, etc. are used.

(Problem to be solved by the invention) When using curtains or twine lights as a light control means, the curtains or twine lights must be opened and closed manually depending on the sunlight.
This is troublesome when the sunlight changes rapidly. Therefore, measures have been taken to automatically open and close these curtains or flints by detecting the amount of sunlight using a sensor.Curtains and flints do not transmit light, so they block the outside view, so it is difficult to keep them indoors. For some people, this results in a loss of sense of openness. Furthermore, as the sensor is used, it is necessary to use dry batteries and a commercial power source, which complicates the device and requires a considerable amount of running cost.

(Object of the Invention) The present invention has been made based on the above circumstances, and provides a lighting window that uses a polarizing plate member as a light-transmissive panel and uses solar cells as a sensor and a power source.
To provide a daylighting window which automatically adjusts daylighting without blocking the external scenery, has a simple configuration, and is inexpensive to use.

(Means for Solving the Problems) For this reason, the present invention provides a lighting window in which a light-transmitting panel is attached to the opening of the window, and external light is brought into the room through the panel. It is composed of a plurality of light-transmissive polarizing plate members that are aligned with each other, and is equipped with a mechanism that operates part or all of the polarizing plate members in response to the amount of light received by a solar cell attached to the polarizing plate members. The amount of sunlight, il! !
The polarization angle of the panel is set to yJ so that the polarization angle is equal to the angle of polarization.

(Function) Unlike curtains, flints, etc., you can see the outside scenery through the panel, and since there is no internal structure using solar cells and polarizing plate members, it is automatic. It can be configured as a device that can be dimmed and does not require a special power supply and is inexpensive to run.

(Example) Hereinafter, an example of the present invention will be specifically described with reference to the drawings. The embodiment of FIG. 1 shows a daylighting window with two panels l and 2 installed corresponding to the opening II of a circular window, said panel 2 likewise having a light-transmitting polarized light. It is a plate member and is fixed to the wall around the window. Further, the circular panel 1 superimposed thereon is also a light-transmissive polarizing plate member, and a tooth shape is formed on the peripheral edge thereof. A driven gear 7 and a driving gear 3 meshing with this are supported so as to be rotationally driven around their center points. The drive gear 3 is driven by a motor 5 via a torque converter 4. Further, one end of the tension coil spsonk 6 is connected to the peripheral edge of the panel 1, and the other end is connected to the fixed panel 2 side. In addition, the reference numeral IO in the figure is a stopper that prevents further rotation of the panel 1 at the maximum extension end of the tension coil spring 6 when the panel 1 is rotated by the drive of the motor 5.

Note that a panel-shaped solar cell 9 is located outside the circumference of the opening 11 and provided on the outer wall.

The circuit configuration of the solar cell 9 and the motor 5 is the second [2I
A Schottky tie auto 20 is provided to prevent overload, and a diode 21 is provided to prevent the electromotive force generated by reverse rotation of the motor from being forward biased against the solar cell 9. .

With such a configuration, during the day, when only sunlight is strong, the solar cell 9 generates the required power according to the amount of light received.

As a result, the rotary torque consisting of the motor 5 is driven,
The gear 3 is rotated via the torque converter 4, thereby rotating the panel 1. At this time, as the panel 1 rotates, the tension coil spring 6 is expanded and stopped at a position that balances this external force. For this reason, when the spring 6 is not extended, the polarization angle is 0.
．． The relative polarization angle of 2 increases, and the amount of light transmitted into the room through both panels 1°2 changes (decreases). When the amount of sunlight becomes more than expected, the stopper 10 acts to forcibly stop the rotation of the panel 1 at the maximum polarization angle.

The torque converter 4 absorbs the driving torque of the motor 5. When it comes to sunlight or shadow, when the sunlight becomes weak,
Since the output of the solar cell 9 also decreases, the driving torque of the motor 5 also decreases, and the panel 1 is rotated in the opposite direction to a position in balance with the tension coil spindle 6.

In this way, the relative polarization angles of both panels 1 are automatically adjusted in accordance with the amount of light received by the solar cells, thereby ensuring a stable amount of daylight in one room. Moreover, since curtains and flints are not used, the outside scenery can be seen completely from inside the room, allowing a sense of openness to be maintained.

As a result of installing a lighting window with the above configuration in a window that actually receives strong western sunlight, the third (dotted chain line (a) of 2I)
A dimming effect with characteristics like this is obtained. In this case, the dotted line (d) shows the characteristics of a normal glass window that does not use a panel like the one of the present invention.

In addition, in the above-mentioned embodiment, another set of polarizing plate members is stacked as a movable panel to form a triple layer structure, and this is also driven by a motor powered by another solar battery, and the above-mentioned daylight window is provided. The result is as shown in Fig. 3, m(b). In this case, the photoresponse characteristics of the added movable panel are made different from those of the previous movable panel 1, in order to obtain desirable curved characteristics. With this configuration, the maximum relative angle to the fixed panel 2 can be made smaller to compensate for the decrease in the amount of transmitted light.

In an embodiment not shown in 4I21, the movable panel 401 relative to the fixed panel 402 (polarizing plate member) employs a stretchable polarizing film whose polarization angle changes as it expands and contracts. Here, one edge of the polarizing film is fixed to a fixed panel 402, and the other side is wound around a roller 403. The roller 403 is equipped with a spiral spring 406, which works against the drive of the motor 405 to return the polarizing film to its initial state.

Furthermore, the driving force of the motor 405 is transferred to the torque converter 404.
The signal is transmitted to the roller 403 via. Further, in the figure, reference numeral 409 denotes a solar cell, which is provided on the outer wall surface at the outer periphery of the window opening 411.

With such a configuration, when sunlight becomes strong, the solar cells 4
The output of 09 increases, the torque of motor 405 increases,
By stretching the polarizing film and increasing the polarization angle relative to the fixed panel 402, the amount of transmitted light can be suppressed and the amount of light admitted can be adjusted to a stable level. When the sunlight becomes weak,
The spring 406 works to move the roller 403 to the motor 405.
The amount of elongation of the polarizing film is reduced by rotating it in the opposite direction against the driving torque caused by the polarizing film. In this way, 1 For example, the two points in Figure 3! With characteristics like (c), the amount of transmitted light is 21! I will adjust it.

In the above embodiment, the amount of current flowing through the motor 405, the spring constant of the spring 406, and the polarizing film 4
Of course, the relative relationship between the amount of irradiated light and the amount of transmitted light can be arbitrarily set by changing the thickness of 01, etc.

In addition, in the first embodiment (see FIG. 1), the solar cell 9 is arranged inside the window instead of outside, and the incident light thereon is transmitted through the polarizing plate member 1.2. In this case, as the amount of irradiated light increases, the relative polarization angle of the polarizing plate member 1.2 is affected and the transmittance decreases, so the amount of incident light on the solar cell 9 and the relative polarization angle converge to a constant value. In this case, stopper 10
does not require.

As clarified in the above embodiments, the movable panel according to the present invention may be in the form of a plate as a polarizing plate member or may be in the form of a flexible film. It is intended to be included without departing from the technical field of the invention.

(Effects of the Invention) The present invention has been described in detail above, and a light-transmitting panel is constituted by a plurality of polarizing plate members, and the relative polarization angle is adjusted according to the amount of light incident on the solar cell. This means that the desired amount of daylight can be maintained. This eliminates the need for humans to adjust the amount of sunlight by manipulating curtains or flints, and the outside scenery can always be enjoyed from inside the room without compromising the sense of openness. Moreover, stabilizing the lighting prevents indoor furniture from deteriorating and also prevents room temperature from rising due to infrared rays.

The structure can also be simplified by utilizing solar cells, and the running cost can be reduced to zero.

[Brief explanation of the drawing]

Figures 1 (a) and (b) are front and side views showing one embodiment of the present invention, Figure 2 is a circuit diagram of a solar cell and a motor, and Figure 3 is the relationship between the amount of transmitted light and the amount of irradiated light. Characteristic diagram 4 [7I is a front view of another embodiment]. 1...Movable panel -2...Fixed panel 3...
・Gear 4...Torque converter 5...
・Motor 6... Spring 7... Driven gear 9... Solar cell 1... Tie auto 1... Opening

Claims (1)

[Claims] In a daylighting window in which a light-transmitting panel is attached to the opening of the window and outside light is brought into the room through the panel, the panel is composed of a plurality of mutually overlapping light-transmitting polarizing plate members, It is equipped with a mechanism that operates part or all of the polarizing plate member in response to the amount of light received by the attached solar cell, and is configured to adjust the polarization angle of the panel so as to adjust the amount of light entering the room. A lighting window characterized by: