JPH01105896A - Blind with insolation regulator - Google Patents

Abstract

PURPOSE: To automatically maintain the optimum angle of a slat all times by calculating the incident angle of a sunlight in accordance with the latitude and longitude of the location of a building, the azimuth of a window and the date to control the angle of the slat. CONSTITUTION: An azimuth angle, elevation and reference solar radiation of a sunlight are calculated from time to time by a computer 7 in accordance with the latitude and longitude of the location of a building, the azimuth of a window and the date in use, previously input. An actual solar radiation measured by a solar radiation measuring equipment 8 is compared with the reference solar radiation to judge the condition of clear weather or rainy weather at this time. The optimum angle of a slat 2 is calculated in accordance with these data and the drive of a motor 5 is controlled for the control of the angle of the slat 2 via a shaft 4 and a ladder cord 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a blind with a solar radiation adjustment device that achieves an optimum blind effect by adjusting the slat angle of the blind.

[Prior Art] In conventional blinds, the slat angle was adjusted by the user pulling a string. For this reason, it was necessary to constantly repeat adjustments according to the position of the sun, making it difficult to maintain the optimal position.

[Problems to be solved by the invention As described above, adjusting the blinds was extremely time-consuming.

The object of this invention is to automatically change the slat angle of a blind according to the amount of solar radiation, and to automatically perform blind adjustment, which conventionally took a lot of effort.

[Means for Solving the Problems] The present invention provides an arithmetic device that calculates the irradiation angle of the sun based on the latitude and longitude of the building, the date and time, and the direction of the building, and calculates the optimal slat angle of the blind. The system includes a blind slat angle detection device, and a drive device that changes the blind slat angle, and attempts to adjust the blind slat angle to the calculated optimum angle.

[Operation] The arithmetic unit calculates the sun's irradiation angle from the latitude, longitude, and azimuth of the building and the date and time, derives the optimal blind slat angle from this, and adjusts the blind slat angle using the drive unit.

[Embodiments of the invention] FIG. 2 is a diagram showing a schematic structure of a blind, (1)
is a blind, (2) is a blind slat, (3)
is a ladder cord that suspends the slat (2), (4) is a rotating shaft, (5) is an electric motor that drives the rotating shaft (4), and (6
) is a detector that detects the rotation of the rotating shaft (4), (7) is a computing unit, and (8) is a solar radiation measuring device.

Figure 3 (a) and (b) show the slats (
2) is a side view showing the state number when the angle of (9) is changed;
) is a rotating drum that is connected to a rotating shaft (4) and moves the ladder cord (3) up and down by rotating.

Next, the configuration of the arithmetic unit will be explained with reference to FIG.

The calculator (7) calculates the solar irradiation angle (sun azimuth angle, solar altitude) based on the latitude and longitude of the building, the orientation of the building, and the 9 hours of the day (step 101). Next, determine whether the current time is the time when sunlight hits the blinds (step 1).
02). If the time is when sunlight hits the blinds, l11
7 or cloudy (step 103). To determine whether it is sunny or cloudy (including rain), use the window vertical solar radiation meter (
8) and the amount of solar radiation calculated based on the building's latitude, longitude, 2 days and 2 hours, and the building's orientation based on Y (+!).If it is determined that it is clear, the blind slats (
During step 2), the angle to the optimum slat 1 is calculated to prevent solar radiation from leaking (step 104).

On the other hand, the angle of the slat (2) of the blind is detected by the blind rotation axis detector (6), and this information is taken into the calculator (7) (step 105). and,
The optimum slat angle obtained in step 104 and the actual slat angle obtained in step 105 are compared in step 106, and it is determined whether the optimum slat angle is at an appropriate value. If it is inappropriate, calculate the operating time of the blind electric motor (5) from the slat angle to be rotated once (Step 107);
The electric motor (5) is operated for the calculated time (steps 108 and 108), and then the electric motor (5) is stopped (steps 109 and 109) to maintain the slat angle of the blind at an optimum value.

Note that if it is determined in step 102 that it is not the time when the blind (1) is exposed to sunlight, and in step 103
If it is determined that it is cloudy (rainy), there is no need to adjust the slat angle, and the slats (2) of the blind are controlled to be horizontal. That is, in step 110, it is determined whether the blind is horizontal or not. If it is in the horizontal position, it is left as it is; if it is not in the horizontal position, the angle to return it to the horizontal position is calculated, and based on this angle, the blind electric motor ( 5) The operating time is calculated (step 111).

Then, the slat (2) is rotated for the determined time (step 112), and then stopped (step 11).
3).

By periodically repeating the above calculations, the optimal blind slat angle can always be obtained.

Although the above embodiments have been explained using an example of a normal blind, other examples include a sash with a built-in blind that incorporates a blind inside double-paned glass, an air flow window that channels air inside double-paned glass, etc. It can be used in the same way.

[Effects of the Invention] According to this invention, when the weather is clear, the slats of the blind always rotate to follow the solar radiation, so no solar radiation leaks through the gaps between the slats of the blind, and the optimal slat position can be automatically determined. can be obtained.

Additionally, on cloudy or rainy days, the slats are horizontal, allowing scattered light to enter the room and brighten the room.

Moreover, it is done automatically, so no human intervention is required.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing the control method of the blind adjustment device of the present invention, FIG. 2 is a front view showing the configuration of the blind,
FIGS. 3(a) and 3(b) are side views showing changes in the slats of the blind. In addition, the code (1) in the figure is a blind, (2) is a slat, (3) is a ladder cord, (4) is a rotating shaft, (5) is an electric motor, (6) is a rotation angle detector, (7) is an arithmetic unit, (
8) is a vertical solar radiation meter, and (9) is a rotating drum. E side no Jyo 1! F (no change in content) °-1ko8shi 2r'1 Procedural amendment (method) 16 Cases Displayed Patent Application No. 1982-264932 2 Title of invention: Blinds with solar radiation adjustment device, person making the amendment＼ ! -1 Date of amendment order: January 26, 1985 (dispatch), subject of amendment 6, contents of amendment (1> As shown in the engraving of wt document and attached (no change in contents))
(2) An engraving of the specification originally attached to the application, as attached (no change in content) (3) An engraving of the drawings originally attached to the application, as attached (no change in content)

Claims (2)

[Claims] (1) A calculation device that calculates the sun's irradiation angle based on the building's latitude, longitude, date and time, and the building's orientation, and calculates the optimal blind slat angle, a blind slat angle detection device, and a blind slat A blind with a solar radiation adjustment device that is equipped with a drive device that changes the angle. (2) Compare the amount of solar radiation calculated based on the building's latitude, longitude, date and time, and the direction of the building with the value of the vertical solar radiation meter to the window, and determine whether it is clear or cloudy/rainy. A blind with a solar radiation adjustment device according to claim 1, wherein the slat angle of the blind is controlled and the slats of the blind are fixed in a parallel position in case of cloudy weather or rain.