JP2005188137A - Screen device for window - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a cooling load in a room, and to secure illuminance at a living point in a habitable room space. <P>SOLUTION: This screen device for a window is equipped with: a shading screen 4 which is arranged so as to be ascendable and descendable inside a window opening 1a of a building forming the habitable room space 1 and which has prescribed translucent performance; a screen driving means for making the shading screen 4 ascend/descend; a solar radiation sensor 7 installed at a point where the quantity of radiated light intruding into the space 1 from the window opening 1a can be detected in the space 1; an illuminance sensor 9 which is installed at the living point in the space 1; and a control means 11 which can perform the control of the drive of the screen driving means, and at least the control of the lighting of a luminaire 10 installed in the space 1 in accordance with the quantity of the light detected by the solar radiation sensor 7 and the illuminance detected by the illuminance sensor 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a window screen device capable of automatically adjusting the amount of solar radiation inserted into a room from a building window. The window screen device according to the present invention can be suitably applied to a window glass for ordinary houses.

  2. Description of the Related Art Conventionally, an open / close control device for an electric blind has been known as a light shielding device for a window that can automatically block solar radiation inserted into a room from a building window (for example, see Patent Document 1).

This device includes an electric blind disposed inside a window and moved up and down by a motor, a solar radiation sensor for detecting the presence or absence of solar radiation inserted into the room through the window, and the rotation direction and rotation of the motor according to a signal from the solar radiation sensor. And a motor control unit for controlling the amount. In this apparatus, the motor control unit raises and lowers the electric blind by a predetermined amount by controlling the rotation of the motor based on the signal from the solar radiation sensor. Thereby, the open degree of a window surface can be adjusted according to the presence or absence and the angle of the solar radiation inserted into a room | chamber interior from a window. Therefore, it is possible to maintain a favorable indoor environment by always blocking the solar radiation that is inserted into the room from the window with a blind, and it is possible to reduce the cooling load particularly during the cooling in the summer.
JP-A-6-257357 (page 2-3)

  However, the conventional window shading device described above is intended to improve the indoor environment by blocking the solar radiation inserted into the room from the window by adjusting the opening / closing position of the blind based on the signal of the solar radiation sensor. .

  That is, in the conventional window shading device, no consideration is given to the illuminance at the living point in the living room space. For this reason, the illuminance at the life point is insufficient due to the sun blocking the blinds, and the indoor environment may be worsened.

  The present invention has been made in view of the above circumstances, and provides a window screen device capable of reducing the cooling load in a room and maintaining good illuminance at a living point in a living room space. Is a technical problem to be solved.

  The window screen device of the present invention that solves the above-described problems is arranged to be movable up and down inside a window opening of a building that forms a living room space, and has a light-shielding screen having a predetermined translucent performance, and the light-shielding screen is raised and lowered. Installed in a living point in the living room space, a solar radiation sensor installed in a place where the amount of solar radiation entering the living room space from the window opening can be detected in the living room space Control capable of performing drive control of the screen driving means and at least lighting control of the luminaire installed in the room space based on the illuminance sensor that has been performed, and the amount of light detected by the solar radiation sensor and the illuminance detected by the illuminance sensor Means.

  In a preferred aspect, the control means is configured to control the lighting fixture so that the lighting fixture is turned on when the detected illuminance is equal to or lower than a preset illuminance or less than the preset illuminance. ing.

  In a preferred aspect, the control means lowers the light shielding screen to the lowest position and fully closes the window opening when the detected light quantity exceeds or exceeds the preset set light quantity. Thus, the screen driving means can be driven and controlled.

  In a preferred aspect, the solar radiation sensor is installed at a location closer to the living room space than the light-shielding screen and exposed to direct sunlight.

  In a preferred embodiment, the window screen device of the present invention is a light-blocking priority switch that selects a light-blocking priority operation mode that prioritizes blocking sunlight that enters the living room space from the window opening, and the window opening. An operation panel further comprising a lighting priority switch for selecting a lighting priority operation mode that prioritizes putting sunlight into the living room space, and the control means according to an operation signal from the operation panel, It is configured to selectively switch the driving control method of the screen driving means based on the detected light amount and the detected illuminance.

  In a preferred aspect, when the operation mode prioritizing light shielding is selected, the control means opens the window opening at maximum when there is no direct sunlight entering the living room space from the window opening. While the light shielding screen is raised, when there is direct sunlight entering the room space from the window opening, the screen driving means is arranged so that the light shielding screen is lowered to a position where the direct sunlight can be blocked. It is comprised so that drive control can be performed. At this time, in a preferred aspect, the control means is configured to increase the light-shielding screen by a predetermined amount when the detected light amount is less than or equal to a preset first set light amount or less than the first set light amount. Drive the screen driving means so that the shading screen is lowered by a predetermined amount when the value exceeds a second set light amount preset to a value larger than the first set light amount or more than the second set light amount Control.

  In a preferred aspect, when the lighting priority operation mode is selected, the control means blocks the light shielding until the window opening is fully opened when the room illuminance in the living room space does not reach a predetermined value. While the screen rises, the screen driving means can be driven and controlled so that the shading screen is lowered until the window opening is fully closed when the room illuminance reaches a predetermined value. Has been. At this time, in a preferred aspect, when the detected illuminance is equal to or lower than a first set illuminance set in advance or less than the first set illuminance, the light shielding screen is increased by a predetermined amount while the detected illuminance is increased. Exceeds the second set illuminance preset to a value larger than the first set illuminance, or exceeds the second set illuminance and the detected light quantity exceeds the preset second set light quantity, or the first When the light quantity is greater than or equal to two set light quantities, the screen driving means is driven and controlled so that the light shielding screen is lowered by a predetermined amount.

  In a preferred aspect, the control means has a timer function that enters a standby state in which the shading screen that has been raised or lowered by a predetermined amount waits for a predetermined time while maintaining its raised or lowered position.

  According to the window screen device of the present invention, the control means performs the drive control of the light shielding screen and the lighting control of the lighting fixture based on the detected light amount of the solar radiation sensor and the detected illuminance of the illuminance sensor. The open / close state of the light-shielding screen can be appropriately adjusted according to the amount of solar radiation that enters the living room space, and the illumination intensity can be supplemented by a lighting fixture as necessary.

  Therefore, it is possible to reduce the cooling load by suppressing an increase in the room temperature due to the invasion of direct sunlight, and it is possible to maintain the necessary illuminance at the living point in the living room space.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

  In the present embodiment shown in FIGS. 1 to 3, the window screen device according to the present invention is applied to a window of a general house. FIG. 1 is a cross-sectional view showing a schematic configuration of the window screen device of this embodiment together with a part of a building.

  As shown in FIG. 1, a heat insulating sash 2 as an opening frame is attached to a window opening 1 a of a building forming a living room space 1, and a heat insulating function is provided in the heat insulating sash 2 with a double window structure. An outdoor shoji 3 made of high-performance glass is fitted.

  And the light shielding screen 4 is arrange | positioned inside the window opening part 1a so that raising / lowering is possible. The light-shielding screen 4 is made of a bellows type polyester non-woven fabric having a honeycomb structure having a high heat insulating function and a light shielding rate of about 70% (light transmittance of about 30%). The shading screen 4 can be housed in a box 6 attached in the vicinity of the ceiling 5 and can be raised and lowered by expansion and contraction of the bellows structure by a screen driving means (not shown). Specifically, the screen driving means is composed of a hanging string and a motor-driven winding device capable of winding and unwinding the hanging string, and the light shielding screen 4 is rotated by rotating the motor forward and backward. Raise and lower. Thus, the light shielding screen 4 can open and close the window opening 1a by its own raising and lowering, and can completely close the window opening 1a in the fully closed state lowered to the lowest position.

  In the living room space 1 in the vicinity of the window opening 1a, an appropriate place where the amount of solar radiation entering the living room space 1 from the window opening 1a is most easily detected, specifically, the room space 1 side of the light shielding screen 4 In addition, a solar radiation sensor 7 including a photodiode and a current value detector is installed at a location exposed to direct sunlight.

  In addition, on the living point in the living room space 1 (the place where the illuminance of the place that becomes the resident's life center is most easily detected), specifically, on the table 8 disposed in the substantially central portion of the living room space 1, An illuminance sensor 9 including a photodiode, a filter, and a current value detector is disposed. Moreover, the lighting fixture 10 is attached to the approximate center part of the ceiling part 5 of this living room space 1, and the appropriate room illumination intensity is ensured by the lighting of this lighting fixture 10 for the life point of the living room space 1. ing.

  The window screen device includes a control unit 11 that can perform drive control of the screen drive unit and lighting control of the lighting fixture 10. The control means 11 includes a CPU, a ROM, a RAM, a comparison operation function, and the like. In addition, a detection signal from the solar radiation sensor 7 and a detection signal from the illuminance sensor 9 are input to the control means 11.

  In this way, the control means 11 can perform drive control of the screen drive means and lighting control of the lighting fixture 10 based on the detected light amount of the solar radiation sensor 7 and the detected illuminance of the illuminance sensor 9, and the detected light amount and detected illuminance are Based on this, it is configured such that a predetermined amount of raising / lowering of the light shielding screen 4 and lighting of the illuminance sensor 9 can be automatically controlled.

  The window screen device also includes an operation panel 12 for switching operation modes. The operation panel 12 includes a light blocking priority switch 13, a lighting priority switch 14, a stop switch 15, an on-screen switch 16a, a on-screen switch 16b, and a lighting fixture on / off switch 17. The operation panel 12 is connected to the control means 11, and switching signals from the switches 13, 14, 15, 16 a, 16 b and 17 are input to the control means 11. In response to an operation signal from the operation panel 12, the control unit 11 selectively selects a driving control method of the screen driving unit based on the detected light amount and the detected illuminance between an operation mode with a light shielding priority and a lighting priority mode. It is comprised so that it may switch to. The resident can select an operation mode as shown in Table 1 below by operating the switch on the operation panel 12.

  The light blocking priority switch 13 is a switch for selecting a light blocking priority operation mode that prioritizes blocking the solar radiation that enters the living room space 1 from the window opening 1a. In this light-blocking priority operation mode, the light-shielding screen 4 is controlled to open and close with priority given to blocking solar radiation in the living room space 1, so that the light-blocking priority mode is effectively used to reduce the cooling load especially in summer. be able to.

  The daylighting priority switch 14 is a switch for selecting a daylighting priority operation mode that prioritizes putting sunlight into the living room space 1 from the window opening 1a. In this lighting-priority operation mode, the shading screen 4 is controlled to be opened and closed with priority given to ensuring the room illuminance by solar radiation entering the living room space 1 from the window opening 1a. The lighting priority mode can be used effectively when it is desired to do so.

  The stop switch 15 is a switch for stopping the operation of the window screen device that is operating in the light shielding priority operation mode or the daylighting priority operation mode.

  The on-screen switch 16a is a switch for arbitrarily raising the shading screen 4 by driving the screen driving means when the operation mode is the shading priority mode, the daylighting priority mode or the stop mode. Similarly, the lower screen switch 16b is a switch for arbitrarily lowering the light shielding screen 4 by driving the screen driving means when the operation mode is the light shielding priority mode, the daylighting priority mode or the stop mode. When the operation mode is the light blocking priority mode or the daylighting priority mode, the raising / lowering of the light blocking screen 4 is basically automatically controlled by the control means 11, but on the screen during the light blocking priority mode or the daylighting priority mode. When the switch 16a or the screen lower switch 16b is pressed, the control means 11 that has received the operation signal of the screen upper switch 16a or the screen lower switch 16b drives the screen driving means to arbitrarily move the light shielding screen 4 up and down.

  The lighting fixture on / off switch 16 is a switch for turning on / off the lighting fixture 10 when the operation mode is the light blocking priority mode, the lighting priority mode, or the stop mode. Note that when the operation mode is the light blocking priority mode or the lighting priority mode, the lighting fixture 10 is basically controlled to be turned on by the control means 11, but the lighting fixture on / off switch during the light blocking priority mode or the lighting priority mode. When 16 is pressed, the control means 11 that has received the operation signal of the lighting fixture on / off switch 16 turns on / off the lighting fixture 10.

  Then, when the operation mode prioritizing the light shielding is selected, the control unit 11 is configured to open the light shielding screen 4 until the window opening 1a is fully opened when there is no direct sunlight entering the room space 1 from the window opening 1a. On the other hand, when there is direct sunlight entering the living room space 1 from the window opening 1a, the screen driving means is driven and controlled so that the light shielding screen 4 is lowered to a position where the direct sunlight can be blocked. It is configured to be able to.

  Specifically, the control means 11 determines that the shading screen 4 is a predetermined one step when the amount of light detected by the solar radiation sensor 7 is less than a preset first set light amount (P1) (or less than the first set light amount). When the detected light amount is greater than or equal to the second set light amount (P2, P1 <P2) preset to a value larger than the first set light amount (P1) (or exceeds the second set light amount) The screen driving means is driven and controlled so that the shading screen 4 is lowered by the one step.

  Here, the first set light amount (P1) can be, for example, the light amount when it is a cloudy day. Moreover, as said 2nd setting light quantity (P2), it can be set as the light quantity when direct sunlight penetrate | invades into the living room space 1 from the window opening part 1a as much as possible, for example.

  Further, as one step when the light shielding screen 4 is raised or lowered, the amount of rise (or lowering) of the light shielding screen 4 when raising from the fully closed state to the fully opened state (or descending from the fully opened state to the fully closed state) When the amount is 1 stroke, it can be, for example, equivalent to 1/5 stroke.

  Further, when the daylighting priority operation mode is selected, the control means 11 raises the shading screen 4 until the window opening 1a is fully opened when the room illuminance in the living room space 1 has not reached a predetermined value. On the other hand, when the room illuminance reaches a predetermined value, the screen driving means can be driven and controlled so that the shading screen 4 is lowered until the window opening 1a is fully closed. .

  Specifically, the control means 11 indicates that the light-shielding screen 4 corresponds to the one step when the detected illuminance of the illuminance sensor 9 is less than the preset first set illuminance (L1) (or below the first set illuminance). On the other hand, when the detected illuminance is greater than or equal to the second set illuminance (L2, L1 <L2) preset to a value larger than the first set illuminance (L1) (or exceeds the second set illuminance) and the detection When the light amount is greater than or equal to the second set light amount (P2) set in advance (or exceeds the second set light amount), the screen driving unit is driven and controlled so that the light-shielding screen 4 is lowered by one step. .

  Here, the first set illuminance (L1) can be, for example, the room point illuminance when the illuminance is sufficient for daily life (about 1000 Lx), and the second set illuminance (L2). Can be set to the indoor illuminance of the living point when the illuminance is about 1.5 times the first set illuminance (L1) (about 1500 Lx), for example.

  Further, the control means 11 is configured so that the detected illuminance of the illuminance sensor 9 is less than the preset third set illuminance (L3) (or the third setting), regardless of whether the operation mode is the light blocking priority or the lighting priority mode. It is configured so that the lighting fixture 10 can be controlled to be lit so that the lighting fixture 10 is turned on when the luminance is less than or equal to the illuminance.

  Here, the third set illuminance (L3) can be, for example, the illuminance at the living point when the illuminance (approximately 800 Lx) is felt that a little more brightness is desired. The third set illuminance (L3) can be a value smaller than the first set illuminance (L1) (L3 <L1).

  In addition, the control unit 11 is configured so that the amount of light detected by the solar radiation sensor 7 is equal to or less than a third set light amount (P3) set in advance (or the third light amount) regardless of whether the operation mode is the light blocking priority or the lighting priority mode. When the light intensity is less than the set light amount, the screen driving means can be driven and controlled so that the light shielding screen 4 descends to the lowest position and fully closes the window opening 1a.

  Here, the third set light amount (P3) can be, for example, a light amount at dusk when the sun goes down and there is no outside light. The relationship between the third set light amount (P3) and the first set light amount (P1) is such that P3 can be a value sufficiently smaller than P1 (P1 >> P3).

  Further, when the light shielding screen 4 is raised or lowered by the one step in the light shielding priority or lighting priority operation mode, the control means 11 maintains the position where the light shielding screen is raised or lowered. A timer function is provided to enter a standby state for waiting for a predetermined time. The waiting time is not particularly limited, and can be about 5 to 10 minutes (about 10 minutes in this embodiment).

  The operation of the thus configured window screen device will be described below. For example, in summer, when the light blocking priority switch 13 is pressed by the resident on the operation panel 12 and the light blocking priority operation mode is selected, the following automatic operation is performed as shown in the flowchart of FIG. 11 is performed.

  First, the control means 11 compares the detected light amount of the solar radiation sensor 7 when the light blocking priority switch 13 is pressed with the first set light amount (P1) (S7).

  At this time, when the detected light quantity is less than the first set light quantity (P1) due to, for example, the absence of direct sunlight entering the living room space 1 from the window opening 1a, the window opening 1a is fully opened at maximum. The light shielding screen 4 is raised by the one step so that the light shielding screen 4 is raised (S8). If the light shielding screen 4 is already fully open when the light shielding priority switch 13 is pressed, the state is maintained as it is. Then, the light shielding screen 4 that has been raised by one step is put into a standby state in which it waits for a predetermined time while maintaining the raised position (S11). Then, after the elapse of a predetermined time in the standby state, the detected light amount of the solar radiation sensor 7 is again compared with the first set light amount (P1) (S7), and if the detected light amount is still less than the first set light amount (P1), the light is blocked. The screen 4 is raised again by the first step (S8). Thus, as long as the detected light amount does not reach the first set light amount (P1), the light-shielding screen 4 is repeatedly raised by the one step until the light-shielding screen 4 is fully opened.

  On the other hand, when there is direct sunlight that enters the living room space 1 from the window opening 1a when the light blocking priority switch 13 is pressed, the amount of light detected by the solar sensor 7 is equal to or greater than the first set light amount (P1), or If the direct sunlight enters the room space 1 from the window opening 1a as the standby time elapses and the detected light quantity becomes equal to or greater than the first set light quantity (P1), the shading screen 4 is not raised. Then, the detected light amount at this time and the second set light amount (P2) are compared (S9). At this time, if the detected light amount is less than the second set light amount (P2), the light-shielding screen 4 is in a standby state for waiting for a predetermined time while maintaining the position at that time (S11). On the other hand, if the detected light quantity at this time is equal to or larger than the second set light quantity (P2), the light shielding screen 4 is lowered by the one step. At this time, when the light-shielding screen 4 is already in the fully closed state, the state is maintained as it is. Then, the light shielding screen 4 lowered by one step is put into a standby state where it waits for a predetermined time while maintaining the lowered position (S11). Then, after the predetermined amount of time in the standby state has elapsed, the detected light amount of the solar radiation sensor 7 and the first set light amount (P1) are compared again (S7), and then the detected light amount and the second set light amount (P2) are compared. When the detected light amount is still less than the second set light amount (P2), the light shielding screen 4 is again in the standby state. On the other hand, when the detected light quantity at this time is equal to or larger than the second set light quantity (P2), the light shielding screen 4 is lowered again by the one step. In this way, as long as the detected light quantity is equal to or greater than the second set light quantity (P2), the light shielding screen 4 is repeatedly lowered by the one step, so that the light shielding screen 4 directly enters the living room space 1 from the window opening 1a. It descends to a position where it can completely block out sunlight.

  Thus, in the light blocking priority mode, it is possible to reliably prevent direct sunlight from entering the living room space 1 from the window opening 1a. For this reason, it is possible to prevent the temperature of the air in the living room space 1 from rising due to the intrusion of direct sunlight, and it is possible to effectively reduce the cooling load particularly in summer.

  Further, during the light blocking priority operation mode, when the detected illuminance of the illuminance sensor 9 becomes less than the third set illuminance (L3), the lighting device 10 is turned on at any time by the control means 11. Thereby, even if it is difficult to ensure the illuminance by the solar radiation entering the living room space 1 by closing the window opening 1a with the light shielding screen 4, it is possible to always ensure the necessary illuminance at the life point. It becomes.

  Furthermore, during this light-blocking priority operation mode, for example, at sunset when the sun goes down and no external light is present, and when the amount of light detected by the solar radiation sensor 7 falls below the third set light amount (P3), the light-shielding screen 4 It descends to the lowest position and fully closes the window opening 1a.

  Next, for example, in the winter season, when the lighting priority switch 14 is pressed by the resident on the operation panel 12 to select the lighting priority operation mode, as shown in the flowchart of FIG. Is performed by the control means 11.

  First, the control means 11 compares the detected illuminance of the illuminance sensor 9 when the daylighting priority switch 14 is pressed with the first set illuminance (L1) (S1).

  At this time, when the detected illuminance is less than the first set illuminance (L1), the shading screen 4 is raised by the one step so that the shading screen 4 is raised until the window opening 1a is fully opened. (S1). If the light shielding screen 4 is already fully opened when the daylighting priority switch 14 is pressed, the state is maintained as it is. Then, the light shielding screen 4 raised by the one step is put into a standby state where it waits for a predetermined time while maintaining the raised position (S6). The detected illuminance of the illuminance sensor 9 and the first set illuminance (L1) are compared again after a predetermined time in the standby state (S1), and if the detected illuminance is still less than the first set illuminance (L1), the light is blocked. The screen 4 is raised again by the first step (S2). In this way, as long as the detected illuminance does not reach the first set illuminance (L1), the light shielding screen 4 is repeatedly raised for one step until the light shielding screen 4 is fully opened.

  On the other hand, when the detection illuminance of the illuminance sensor 9 is equal to or higher than the first set illuminance (L1) when the daylighting priority switch 14 is pressed, or the detected illuminance is equal to or higher than the first set illuminance (L1) as the standby time elapses. When it becomes, the shading screen 4 is not raised. Then, the detected illuminance at this time is compared with the second set illuminance (L2) (S3). At this time, if the detected illuminance is less than the second set illuminance (L2), the light-shielding screen 4 is in a standby state in which it waits for a predetermined time while maintaining the position at that time (S6). On the other hand, if the detected illuminance at this time is equal to or greater than the second set illuminance (L2), the control means 11 compares the detected light amount of the solar radiation sensor 7 with the second set light amount (P2) (S4). If the detected light quantity at this time is less than the second set light quantity, the light-shielding screen 4 is in a standby state for waiting for a predetermined time while maintaining the position at that time (S6). On the other hand, if the detected light quantity at this time is equal to or greater than the second set light quantity (P2), the shading screen 4 is lowered by the one step (S5). At this time, when the light-shielding screen 4 is already in the fully closed state, the state is maintained as it is. Then, the light shielding screen 4 lowered by one step is put into a standby state where it waits for a predetermined time while maintaining the lowered position (S6). Then, after the steps S1 and S3 have passed again after a predetermined time in the standby state, the detected light amount of the solar radiation sensor 7 and the second set light amount (P2) are compared, and the detected light amount at this time is the second set light amount ( If it is equal to or greater than P2), the shading screen 4 is lowered again by the one step. Thus, as long as the detected light amount is equal to or greater than the second set light amount (P2), the light-shielding screen 4 is repeatedly lowered by the one step, whereby the light-shielding screen 4 fully closes the window opening 1a at the maximum.

  As described above, in the daylighting priority mode, when the room illuminance is insufficient, the room illuminance can be ensured by the solar radiation from the window opening 1a by positively incorporating the sunlight into the living room space 1 from the window opening 1a. .

  In addition, when there is sufficient room illuminance at the living point of the living room space 1, the shielding screen 4 closes the window opening 1a.

  Further, during the lighting priority operation mode, when the detected illuminance of the illuminance sensor 9 becomes less than the third set illuminance (L3), the lighting device 10 is turned on at any time by the control means 11. As a result, even if the light shielding screen 4 is raised and the window opening 1a is fully opened, even if the minimum indoor illuminance cannot be ensured by the solar radiation entering from the window opening 1a, It becomes possible to always secure the necessary illuminance.

  Further, during the daylighting priority operation mode, for example, at sunset when the sun goes down and no external light is present, and when the amount of light detected by the solar radiation sensor 7 falls below the third set light amount (P3), the shading screen 4 It descends to the lowest position and fully closes the window opening 1a.

  As described above, in the window screen device of the present embodiment, when in the operation mode with priority to light shielding or lighting, the light shielding screen 4 is opened and closed according to the operation mode based on the detection signals of the solar radiation sensor 7 and the illuminance sensor 9. Since it can be automatically controlled, troublesome screen operations by residents are not required, operation that can always maintain the optimal indoor environment can be easily continued, and it can contribute to energy saving by reducing the air conditioning load. .

  In addition, the resident can freely select the open / close state of the light-shielding screen 4 by pressing the on-screen switch 16a or the down-screen switch 16b regardless of the operation mode. Thus, the open / close state of the light shielding screen 4 can be changed at any time.

  In this embodiment, since the light shielding screen 4 is employed as the light shielding means for shielding the solar radiation by moving up and down, it is driven as compared with the light shielding means for shielding the solar radiation by adjusting the angle of the blades of the blinds. The mechanism is simplified.

  In the above-described embodiment, an example in which lighting control of the lighting fixture 10 is controlled by the control unit 11 has been described. However, the intensity (brightness) of the lighting fixture 10 is adjusted based on the detected illuminance of the solar radiation sensor 9. Also good.

It is sectional drawing which showed schematic structure of the screen apparatus which concerns on embodiment of this invention with a part of building. It is a flowchart which shows the operation control in the light-shielding priority mode in the screen apparatus which concerns on the said embodiment. It is a flowchart which shows the operation control in the lighting priority mode in the screen apparatus which concerns on the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Living room space 1a ... Window opening part 3 ... Outdoor shoji 4 ... Light shielding screen 7 ... Solar radiation sensor 9 ... Illuminance sensor 10 ... Illumination device 11 ... Control means 12 ... Operation panel 13 ... Light shielding priority switch 14 ... Lighting priority switch 15 ... Stop Switch 16a ... Switch on screen 16b ... Switch below screen

Claims (10)

A light-shielding screen which is arranged to be movable up and down inside the window opening of the building forming the living room space and has a predetermined light-transmitting performance;
Screen driving means for raising and lowering the light shielding screen;
A solar radiation sensor installed in a location capable of detecting the amount of solar radiation entering the living room space from the window opening in the living room space;
An illuminance sensor installed at a living point in the living room space;
Control means capable of performing drive control of the screen drive means and at least lighting control of the luminaire installed in the room space based on the amount of light detected by the solar radiation sensor and the illuminance detected by the illuminance sensor. A screen device for windows.   The control means is configured to control lighting of the luminaire so that the luminaire is lit when the detected illuminance is equal to or lower than a preset illuminance or less than the preset illuminance. The window screen device according to claim 1.   The control means is configured so that when the detected light quantity exceeds a preset set light quantity or more than the set light quantity, the light shielding screen is lowered to a lowest position and the window opening is fully closed. 3. The window screen device according to claim 1, wherein the screen driving means is configured to be able to drive and control.   4. The window screen device according to claim 1, wherein the solar radiation sensor is installed at a location closer to the living room space than the light-shielding screen and exposed to direct sunlight. A shading priority switch that selects a shading priority operation mode that prioritizes blocking sunlight that enters the room space from the window opening, and lighting that prioritizes putting sunlight into the room space from the window opening An operation panel including a lighting priority switch for selecting a priority operation mode;
The control means is configured to selectively switch the driving control method of the screen driving means based on the detected light amount and the detected illuminance in accordance with an operation signal from the operation panel. 5. A window screen device according to claim 1, 2, 3 or 4.   When the operation mode prioritizing the light shielding is selected, the control means raises the light shielding screen until the window opening is fully opened when there is no direct sunlight entering the room space from the window opening. On the other hand, when there is direct sunlight entering the room space from the window opening, the screen driving means can be driven and controlled so that the light shielding screen is lowered to a position where the direct sunlight can be blocked. 6. The window screen device according to claim 5, wherein the window screen device is configured as follows.   When the detected light amount is less than or equal to a preset first set light amount or less than the first set light amount, the control unit raises the light shielding screen by a predetermined amount, while the detected light amount is greater than the first set light amount. The screen driving means is driven and controlled so that the light-shielding screen is lowered by a predetermined amount when the second set light amount exceeds a second set light amount set in advance to a large value. Item 7. A screen device for a window according to Item 6.   In the control means, when the lighting priority operation mode is selected, when the room illuminance in the living room space does not reach a predetermined value, the shading screen rises until the window opening is fully opened. The screen drive means can be driven and controlled so that the shading screen is lowered until the window opening is fully closed when the room illuminance reaches a predetermined value. The window screen device according to claim 5, 6 or 7.   When the detected illuminance is less than or equal to a preset first set illuminance or less than the first set illuminance, the control means increases the light-shielding screen by a predetermined amount, while the detected illuminance is higher than the first set illuminance. When it exceeds a second preset illuminance preset to a large value, or when it is greater than or equal to the second set illuminance, and when the detected light quantity exceeds the preset second set light quantity, or when it is greater than or equal to the second set light quantity 9. The window screen device according to claim 8, wherein the screen driving means is controlled so that the light shielding screen is lowered by a predetermined amount.   8. The control unit according to claim 7, further comprising a timer function that enters a standby state in which the shading screen that has been raised or lowered by a predetermined amount waits for a predetermined time while maintaining the raised or lowered position. Or the screen device for windows of 9.

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