JP2000303760A - Automatically controlled blinds - Google Patents

Abstract

(57) [Summary] To provide an automatically controlled blind device capable of adjusting the intensity of solar radiation inserted from a window. A blind (2) provided inside a window (1) and having a number of blades (2a), a light detector (3) that receives light inside the window (1) and detects the amount of received light, and detection of the light detector (3) First control means for outputting a control signal relating to the angle of the blade 2a based on the amount of light, and a motor 5 for changing the angle of the blade 2a based on a control signal from the first control means
And with. Further, a temperature detector 6 for detecting an air temperature in a gap 1b between the window glass 1a and the blind 2, an exhaust fan 8 for exhausting air in the gap 1b to the outside of the room, and an exhaust fan based on a temperature detected by the temperature detector 6 Second control means for controlling the operation or stop of the fan 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatically controlled blind device capable of automatically adjusting the intensity of sunlight shining from a window into a room.

[0002]

2. Description of the Related Art Generally, in a conventional blind provided in a window for shielding light, the blade of the blind can be rotated by manually operating an "operation string" to change its angle. ing. Therefore, the user operates the operation string according to the intensity of the sun rays, the position of the sun, and the like,
The angle of the blades is adjusted in the closing or opening direction to maintain the desired illuminance (brightness), temperature, etc. in the room. The brightness of the room was ensured while reducing the load.

[0003]

However, in the conventional blind, in order to keep the brightness and temperature of the room always optimal, for example, the direction of the light passing through the window glass changes with the position of the sun. It is necessary to frequently operate the operation cord to adjust the angle of the blade in accordance with such a change in the external factor, and there is a problem that the operation is troublesome. Even if the angle of the blades is adjusted to block direct sunlight that enters the room, the air accumulated in the gap between the window glass and the blinds is heated by the radiant heat of sunlight, so this heated air is In addition, there is also a problem that the cooling load in summer increases due to the rise in the indoor temperature by flowing into the air conditioner.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an automatically controlled blind device capable of adjusting the intensity of solar radiation inserted through a window without troublesome operation. Is what you do. Another object of the present invention is to provide an automatically controlled blind device capable of preventing an increase in room temperature due to warm air accumulated in a gap between a window glass and a blind and reducing a cooling load, in addition to the above objects. Things.

[0005]

In order to achieve the above object, an automatic control type blind device according to the present invention comprises a blind provided inside a window, a light receiving device inside the window, and a light amount received. A photodetector to be detected, first control means for outputting a control signal relating to the angle of the blade of the blind based on the amount of light detected by the photodetector, and a blade based on the control signal from the first control means. And a driving means for changing the angle by rotating.

In the above construction, the first control means turns the blade of the blind by a predetermined angle in the closing direction when the amount of light detected by the photodetector is equal to or greater than a predetermined value. When the amount of light is equal to or less than a predetermined value, control is performed to rotate the blade in the opening direction by a predetermined angle.

Further, in the above configuration, the photodetector is provided on the indoor side of the blind and at a position where direct sunlight is applied.

[0008] In addition to the above configuration, a temperature detector for detecting an air temperature in a gap between the window glass and the blind, an exhaust fan for discharging air in the gap to the outside of the room, and a temperature detector based on the temperature detected by the temperature detector. And a second control means for performing control for operating or stopping the exhaust fan.

In the above configuration, the second control means operates the exhaust fan when the detected temperature of the temperature detector is equal to or higher than a predetermined value, while the detected temperature is equal to or lower than the predetermined value. Sometimes, control is performed to stop the exhaust fan.

[0010]

Embodiments of the present invention will be described below. FIG. 1 is a cross-sectional view showing a schematic configuration of an automatic control type blind device according to an embodiment of the present invention together with a part of a building, where reference numeral 1 denotes a window, 1a denotes a window glass of the window 1, 2 is a blind provided inside the window 1 and 3 is a window 1
The photodetector 4 receives light inside and outputs the received light amount as an electric signal (for example, a signal having a voltage proportional to the received light amount). Reference numeral 4 denotes a controller attached to an appropriate position of the window 1.

The blind 2 has a large number of blades (slats) 2a made of a thin metal plate. These wings 2
a is suspended and supported by an elevating cord and a ladder cord (not shown) so as to be able to ascend and descend and to adjust the angle, similarly to a known general window blind. The photodetector 3 is located closer to the indoor side than the blind 2 and has a window glass 1a.
And at a position where the direct sunlight that has passed through the blind 2 shines, and is fixed to a window frame or the like with an appropriate fixture (not shown).

Reference numeral 5 denotes a motor as driving means for rotating the blade 2a via the rudder cord or the like and changing its angle, and 6 is disposed in a gap 1b between the window glass 1a and the blind 2. This is a temperature detector for detecting the air temperature in the gap 1b. Further, 7 has a gap 1b at one end.
An exhaust duct which communicates with the other end (not shown) and communicates with the outside; and 8 is an exhaust fan provided in the exhaust duct 7;
From these exhaust duct 7 and exhaust fan 8, the gap 1b
An exhaust device 9 for discharging the air inside the room to the outside is configured.

Although not shown, a first control means and a second control means are stored inside the controller 4. These control means include a microcomputer having a comparison operation function, an electronic circuit, and the like. The first control means controls the control signal relating to the angle of the blade 2a of the blind 2 based on the amount of light detected by the photodetector 3. The second control means is configured to perform control for operating / stopping the exhaust fan 8 based on the temperature detected by the temperature detector 6.

Next, the operation of the automatically controlled blind device configured as described above will be described. First, FIG.
The operation relating to the angle control of the blind blades will be described with reference to the flowchart of FIG. 3. A part of the sunlight rays transmitted through the window glass 1a hit the blades 2a of the blind 2 and bounce off, and the remainder passes through the gap between the blades 2a and the indoor space. Plug in. Then, a part of the inserted light hits the photodetector 3, and the light amount is detected by the photodetector 3 (step S1). The detected light amount is output as an electrical signal from the photodetector 3 and is input to the controller 4 via a signal line (not shown).

The detected light quantity input to the controller 4 is compared with a predetermined value (reference light quantity) set by the first control means (step S2). Then, as a result of the comparison, when it is determined that the detected light amount is equal to or more than the predetermined value, the process proceeds to step S3, and the first control means rotates the blade 2a of the blind 2 by a predetermined angle in the closing direction (light blocking direction). Output a control signal. Then, in response to the control signal, the motor 5 is started, and the blade 2a is rotated in a direction to close by a predetermined angle.

On the other hand, as a result of the comparison in step S2,
If it is determined that the detected light amount is equal to or less than the predetermined value, the process proceeds to step S4, and the first control unit outputs a control signal for rotating the blade 2a by a predetermined angle in the opening direction (light transmission direction). Then, upon receiving this control signal, the motor 5 starts up,
The blade 2a is rotated in a direction to open by a predetermined angle. The predetermined value used as a criterion for the determination in step S2 is, for example, a detected light amount when the light detector 3 is slightly exposed to direct sunlight, and a detected light amount when the light detector 3 is not directly irradiated with direct sunlight. Is used such that the light amount value is in the middle of.

Next, the operation relating to the operation / stop control of the exhaust fan will be described with reference to the flowchart of FIG. First, in step S11, the temperature of the air in the gap 1b between the window glass 1a and the blind 2 is detected by the temperature detector 6. The detected temperature is output as an electric signal from the temperature detector 6 and is input to the controller 4 via a signal line (not shown).

In step S12, the detected temperature input to the controller 4 is compared with a predetermined value (reference temperature) set in advance by the second control means. Then, as a result of the comparison, when it is determined that the detected temperature is equal to or higher than the predetermined value, the process proceeds to step S13, and the operation of the exhaust fan 8 is started by the control signal from the second control means. As a result, the air in the gap 1b, which has been heated by the radiant heat of the sunlight passing through the window glass 1a and thus has a high temperature, is discharged from the exhaust duct 7
The air is sucked in and discharged outside through the exhaust duct 7. The warm air discharged through the exhaust duct 7 is released to the atmosphere or used for some purpose. Further, as the air is discharged, the air in the room flows into the gap 1b, so that the temperature of the air in the gap 1b approaches the room temperature.

On the other hand, as a result of the comparison in step S12, if it is determined that the detected temperature is equal to or lower than the predetermined value, the process proceeds to step S14, where the exhaust fan 8 is stopped by the control signal from the second control means. Let me do.

According to the automatically controlled blind device configured as described above, the following effects can be obtained. That is, the light amount is detected by the photodetector 3 inside the window 1 in which the blind 2 is provided, and the first light amount is detected based on the detected light amount.
A control signal relating to the angle of the blade 2a of the blind 2 is output from the control means, and the blade 2a is rotated based on this control signal. The angle of the blade 2a can be adjusted. Therefore, it is possible to adjust the intensity of solar radiation to be inserted from the window 1 without requiring a troublesome operation like a conventional blind.

When the amount of light detected by the photodetector 3 is equal to or greater than a predetermined value, the blade 2a is rotated by a predetermined angle in the closing direction. On the other hand, when the amount of light is equal to or less than the predetermined value, the blade 2a is rotated. Since it is rotated by a predetermined angle in the opening direction,
It is possible to maximize the use of outdoor light inside the room within a range where the amount of solar radiation coming in from the window 1 is suppressed to a certain level or less, and to reduce the power consumption related to indoor lighting and secure the view from the window. Can also.

Further, since the photodetector 3 is provided on the indoor side of the blind 2 at a position where direct sunlight is applied,
It is possible to directly detect a change in the intensity of the incoming sunlight, which accompanies a change in the angle of the blade 2a, and it is possible to accurately detect the change. Therefore, the angle of the blade 2a can be controlled with high accuracy based on the detected light amount.

The temperature of the air in the gap 1b between the window glass 1a and the blind 2 is detected by the temperature detector 6, and the exhaust fan 8 is operated or stopped based on the detected temperature, so that the air is discharged outside the room. The gap 1
By bringing the temperature in b close to the room temperature, it is possible to prevent adverse effects due to the temperature difference.

When the temperature detected by the temperature detector 6 is higher than a predetermined value, the exhaust fan 8 is operated. On the other hand, when the detected temperature is lower than the predetermined value, the exhaust fan 8 is stopped. In addition, it is possible to prevent an increase in the room temperature due to the inflow of warm air accumulated in the gap 1b between the window glass 1a and the blind 2, thereby reducing the cooling load.

[0025]

As described above, according to the automatically controlled blind device of the present invention, the first control means is based on the amount of light detected by the photodetector that receives light inside the window in which the blind is provided. A control signal relating to the angle of the blade of the blind is output, and the blade is rotated by the driving means based on this control signal. Can be adjusted, and a complicated adjustment operation like a conventional blind is not required.

When the amount of light detected by the photodetector is equal to or greater than a predetermined value, the blade is rotated by a predetermined angle in the closing direction.
When the detected light amount is less than a predetermined value, the blade is rotated by a predetermined angle in the opening direction, so that the maximum amount of outdoor light can be taken into the room as long as the sunlight coming in from the window is suppressed to a certain level or less. In addition, it is possible to reduce the power consumption of the interior lighting and to secure the view from the window.

Further, since the photodetector is provided on the indoor side of the blind and at a position where direct sunlight shines, it is possible to directly detect the change in the intensity of incoming sunlight due to a change in the angle of the blade. Detection can be performed and accurate detection can be performed, and control accuracy can be improved.

Further, the temperature of the air in the gap between the window glass and the blind is detected by a temperature detector, and the exhaust fan is operated or stopped based on the detected temperature. By discharging the gas, the temperature in the gap is brought close to the room temperature, and the adverse effect due to the temperature difference can be prevented.

When the temperature detected by the temperature detector is higher than a predetermined value, the exhaust fan is operated. On the other hand, when the detected temperature is lower than the predetermined value, the exhaust fan is stopped. It is possible to prevent an increase in the room temperature due to the inflow of warm air accumulated in the gap between the air conditioner and the blind, thereby reducing the cooling load.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a schematic configuration of an automatically controlled blind device according to an embodiment of the present invention together with a part of a building.

FIG. 2 is a flowchart showing blind blade angle control.

FIG. 3 is a flowchart showing a start / stop control of an exhaust fan.

[Explanation of symbols]

1 window, 1a window glass, 1b gap, 2 blind, 2a blade, 3 photodetector, 4 controller, 5 motor (drive unit), 6 temperature detector, 8 exhaust fan.

Claims (5)

[Claims] 1. A blind disposed inside a window, a photodetector receiving light inside the window and detecting an amount of the received light, and a blade of the blind based on the amount of light detected by the photodetector. A first control means for outputting a control signal relating to the angle of the blade, and a driving means for rotating the blade based on the control signal from the first control means to change the angle. Automatically controlled blind device. 2. The control device according to claim 1, wherein when the detected light amount of the photodetector is equal to or greater than a predetermined value, the first blade rotates the blade of the blind by a predetermined angle in the closing direction. 2. The automatic control type blind apparatus according to claim 1, wherein when the value is equal to or less than a predetermined value, the blade is controlled to rotate by a predetermined angle in the opening direction. 3. The automatically controlled blind device according to claim 1, wherein the photodetector is provided on the indoor side of the blind and at a position exposed to direct sunlight. 4. A temperature detector for detecting an air temperature in a gap between a window glass and a blind, an exhaust fan for discharging air in the gap to the outside of the room, and the exhaust fan based on a temperature detected by the temperature detector. The automatic control type blind device according to any one of claims 1 to 3, further comprising second control means for performing control for operating or stopping the vehicle. 5. The second control means operates the exhaust fan when the temperature detected by the temperature detector is equal to or higher than a predetermined value, and when the detected temperature is equal to or lower than the predetermined value. 5. The automatically controlled blind device according to claim 4, wherein the blind device is configured to perform control for stopping an exhaust fan.