JP5405816B2 - How to determine the daylight rate when there are obstacles that interfere with daylight - Google Patents

Description

  The present invention relates to a method for determining a daylight rate when there is an obstacle that hinders daylighting.

The method for obtaining the daylight rate at a specific indoor position through a daylighting window when there are no obstacles such as neighboring buildings or trees that interfere with daylight outdoors has been known. The light rate cannot be regarded as the daylight rate when there is such an obstacle outdoors.
JP-A-8-220980

  In view of the above problems, the present invention provides a method that can easily and accurately determine the daylight rate at a specific indoor position through a daylighting window when there is an obstacle that obstructs daylighting outdoors. The task is to do.

The above problem is a method for obtaining the daylight rate at a specific position in a room through a daylighting window when there is an obstacle that obstructs daylighting,
While determining the first daylight rate at the indoor specific position through the daylighting window when there is no obstacle,
The outdoor daylighting section partitioned by the building with the daylighting window and the obstacle is a virtual daylighting window, and the second daylight rate at the position of the daylighting window through the virtual daylighting window is obtained.
The value obtained by dividing the product of the first and second daylight rates by 100 is the daylight rate at a specific position in the room through the daylighting window when there is an obstacle. This is solved by a method for determining the daylight rate when there is an obstacle to obstruct (first invention).

  In this method, an outdoor daylighting section partitioned by a building with a daylighting window and an obstacle is used as a virtual daylighting window, and a second daylight rate at the position of the daylighting window through the virtual daylighting window is obtained. The value obtained by dividing the product of the second daylight rate by the first daylight rate at a specific position in the room through the daylighting window when there is no obstacle divided by 100 is the room through the daylighting window when there is an obstacle. Since the daylight rate at the specific position is set, the daylight rate at the specific position in the room through the daylighting window when there is an obstacle that obstructs the daylight can be obtained with high accuracy.

  In addition, an outdoor daylighting section partitioned by a building having a daylighting window and an obstacle is used as a virtual daylighting window, and a second daylight rate at the position of the daylighting window through the virtual daylighting window is obtained. When there is an obstacle that interferes with the lighting outdoors, it is only necessary to divide the product of the daylight rate and the first daylight rate at a specific position in the room through the daylighting window when there is no obstacle by 100. The daylight rate at a specific position in the room through the daylighting window can be easily obtained.

  In the first invention, the virtual daylighting window may be composed of only one or both of a virtual vertical rectangular window and a virtual horizontal rectangular window (second invention). In this case, the second daylight rate can be obtained outdoors using the existing formula and calculation diagram used to obtain the first daylight rate for the vertical rectangular window and the horizontal rectangular window. The daylight rate at a specific position in the room through the daylighting window when there is an obstacle that hinders daylighting can be obtained more easily.

  Since the present invention is as described above, the daylight rate at a specific position in the room through the daylighting window when there is an obstacle that hinders daylighting can be easily obtained with high accuracy.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

The embodiment shown in FIG. 1 is a case where a building 3 having a daylighting window 1 of a building 2 having a daylighting window 1 made of a vertical rectangular window is present on the side where the neighboring building 3 exists as an obstacle. The daylight rate D at the indoor specific position P ₀ through the window 1 is obtained as follows using the following equation (1).

That is, in the application of the formula (1), the first daylight rate D ₀ at the indoor specific position P ₀ through the daylighting window 1 when there is no neighboring building 3 is obtained. The first daylight rate D ₀ may be obtained by applying to an existing calculation formula or may be obtained from an existing calculation chart.

Further, a building 2 with a lighting window 1, the lighting unit of the outdoor partitioned by the neighboring building 3 as a virtual light-receiving window, a second day at the position P _f of the lighting window 1 through the virtual fenestra Find the light rate.

  In the present embodiment, as shown in FIGS. 1A and 1B, in this embodiment, a total of three virtual windows (k = 1) including only one virtual horizontal rectangular window w1 and two virtual vertical rectangular windows w2 and w3. ~ 3) virtual windows w1, w2, w3. In that case, the above equation (1) is expressed by equation (2).

For each of these virtual windows w1, w2, and w3, daylight rates D _w1 , D _w2 , and D _w3 at the position P _f of the daylighting window 1 through the virtual window are obtained. The daylight rates D _w1 , D _w2 , and D _w3 may be obtained by applying to an existing calculation formula in the same manner as that for obtaining the daylight rate D ₀ , or may be obtained from an existing calculation chart. In the present embodiment, the position P _f of the daylighting window 1 is set as the center position of the lower end of the daylighting window 1.

D obtained by applying the first daylight rate D ₀ and the second daylight rates D ₀ , D _w1 , D _w2 , D _w3 obtained as described above to the formula (2) is the building 3 of the neighbor Is the daylight rate at the indoor specific position P ₀ through the daylighting window 1 of the building 2.

Thus, according to the above method, the outdoor daylighting portions w1, w2, and w3 partitioned by the building 2 having the daylighting window 1 and the neighboring building 3 are set as virtual daylighting windows, and the virtual daylighting windows w1, w2 are set. obtains a second daylight factor D _w1, D _w2, D _w3 at a position of the lighting window 1 through w3, this second Hiruhikariritsu D _w1, D _w2, D _w3, when there is no obstacle Daylight at the indoor specific position P ₀ through the daylighting window 1 when there is a neighboring building 3 when the product of the first daylighting rate D ₀ at the indoor specific position through the daylighting window is divided by 100 Since the rate is D, the daylight rate at the indoor specific position P ₀ through the daylighting window 1 when there is a neighboring building 3 can be obtained with high accuracy.

Moreover, the outdoor daylighting sections w1, w2, and w3 partitioned by the building 2 having the daylighting window 1 and the neighboring house 3 are used as virtual daylighting windows, and the position of the daylighting window 1 through the virtual daylighting windows w1, w2, and w3. second seek daylight factor D _w1, D _w2, D _w3 in, this second Hiruhikariritsu D _w1, D _w2, D _w3, at room specific position through the lighting window when no obstacle Since it is only necessary to divide the product of the first daylight ratio D ₀ by 100, it is possible to easily obtain the daylight ratio at the indoor specific position P ₀ through the daylighting window 1 when there is a neighboring building 3. it can.

In particular, in the present embodiment, since the virtual daylighting window is composed of only the virtual vertical rectangular windows w2 and w3 and the virtual horizontal rectangular window w1, as described above, the first one about the vertical rectangular window and the horizontal rectangular window is used. The second daylight rate for each of the virtual windows w1, w2, w3 can be obtained using the existing formulas and calculation diagrams used to obtain the daylight rate, and there is a building 3 in the neighboring house. The daylight rate D at the indoor specific position P ₀ through the daylighting window 1 can be determined more easily.

In the embodiment shown in FIG. 2, the neighboring building 3 has the eaves portion 4, is taller than the building 2 with the daylighting window 1, and has a dimension in the ridge line direction with the daylighting window 1. The daylight rate D at the indoor specific position P ₀ through the daylighting window 1 of the building 2 is obtained as follows using the equation (1).

That is, in the application of Expression (1), as in the above case, the first daylight rate D ₀ at the indoor specific position P ₀ through the daylighting window 1 when there is no neighboring building 3 is obtained. In addition, in the present embodiment, the building 3 of the neighboring house has the eaves portion 4, is taller than the building 2 with the daylighting window 1, and has a dimension in the ridge line direction with the daylighting window 1. Considering that the virtual window is smaller, the virtual window is formed by only one virtual horizontal rectangular window w1 and four virtual vertical rectangular windows w2, w3, w4, and w5 as shown in FIGS. A total of five (k = 1 to 5) virtual windows w2, w3, w4, and w5 are used. In that case, the above equation (1) is expressed by equation (3).

In addition,
The virtual window w1 is a virtual horizontal rectangular window that is a height position without any obstacles on the outside thereof, and is an area cut by the eaves part 4 and the wall surface,
The virtual window w2 is a virtual vertical rectangular window between the eaves part 4 of the building 3 of the neighboring house and the virtual windows w1 and w3.
The virtual window w3 is a virtual vertical rectangular window on one side of the building 2 with the daylighting window 1 and the building 3 of the neighboring house,
The virtual window w4 is a virtual vertical rectangular window on the other side of the building 2 with the daylighting window 1 and the building 3 of the neighboring house,
The virtual window w5 is a virtual vertical rectangular window between the eaves part 4 and the wall surface of the building 3 of the neighboring house.

These will each virtual window w1, w2, w3, w4, w5, the second daylight factor D _w1 at the position P _f of the lighting window 1 through a virtual _{window, D w2, D w3, D} w4, D w5 Ask. The second daylight rate D ₀ , D _w1 , D _w2 , D _w3 and the above-mentioned first daylight rate D ₀ are applied to the equation (3) to obtain D, and there is a neighboring building 3 In this case, the daylight rate at the indoor specific position P ₀ through the daylighting window 1 of the building 2 is used.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the case where the obstacle that hinders the lighting is the neighbor building 3 having a specific form is shown, but the form of the neighbor building is not limited, and may be in various forms. The virtual vertical rectangular window and the virtual horizontal rectangular window constituting the virtual window may be set in various modes in relation to the form of an obstacle such as a neighboring house building. Not only buildings but also trees and retaining walls may be used. Further, all of the outdoor daylighting sections partitioned by the building having the daylighting window and the obstacle may be virtual daylighting windows, or a major part may be virtual daylighting windows.

FIG. 1A is a partially sectional front view of a building, and FIG. 2B is a partially sectional plan view showing an embodiment. FIG. 2A is a partial cross-sectional front view of a building, and FIGS. 2B and 2C are partial cross-sectional plan views.

Explanation of symbols

1 ... Lighting window 2 ... Building 3 ... Neighboring building (obstacle)
P0 ... Indoor specific position Pf ... Position of daylighting window w1-w5 ... Virtual window

Claims (2)

A method for obtaining a daylight rate at a specific position in a room through a daylighting window when there is an obstacle obstructing daylighting,
While determining the first daylight rate at the indoor specific position through the daylighting window when there is no obstacle,
The outdoor daylighting section partitioned by the building with the daylighting window and the obstacle is a virtual daylighting window, and the second daylight rate at the position of the daylighting window through the virtual daylighting window is obtained.
The value obtained by dividing the product of the first and second daylight rates by 100 is the daylight rate at a specific position in the room through the daylighting window when there is an obstacle. A method to determine the daylight rate when there are obstacles to block.   The method for obtaining a daylight rate according to claim 1, wherein the virtual daylighting window is configured by only one or both of a virtual vertical rectangular window and a virtual horizontal rectangular window.

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