JP2007052029A - Method of sunshine simulation for housing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of sunshine simulation for housing which reduces the time taken for building of models by limiting only to those models around opening to easily simulate sunshine for individual residential space, even at an early stage of designing. <P>SOLUTION: In this method, the building open mouth partitioned into a large number of grids is assumed as a rectangle light source, on the basis of skylight-specific luminance of the open mouth, then illuminance distribution of floor face is computed from the light source. Additionally, the floor face is segmented to compute the illuminance for each grid. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention calculates the change of sunshine from the opening to the inside of the building according to the season and time, and displays the result to know the sunshine condition from the opening to the inside of the building in the target building. The present invention relates to a residential sunshine simulation method.

  When building a building, the scope of the influence of the shadow on the adjacent land is legally limited, and in order to confirm whether or not this restriction can be satisfied, the shadow of the target building is checked using a computer. A shadow simulation apparatus that simulates the state is used (see, for example, Non-Patent Document 1).

  When simulating the shaded state, the purpose is to satisfy the legal restrictions of the shade on the adjacent land, so the target building needs to be accurately constructed as a simulation model. That is, when the shape of the building changes, the shadow conditions for the adjacent land change corresponding to this change, and each time a simulation model needs to be rebuilt and simulated.

For this reason, when the design of the building layout, height, etc. has progressed to some extent with the customer, a simulation model is built using a cad system, etc., and a computer is used based on this simulation model. It is common to perform a shadow simulation using a shadow simulation apparatus.
MiniCad Peripheral Guidebook (A & A Co., Ltd .: Revised May 16, 1997, 1st Edition) Page 35 Stick Shadow

  As described above, the conventional shadow simulation is mainly aimed at satisfying legal restrictions by examining the shadow on the adjacent land of the target building model. Few were intended for evaluation.

  In particular, when considering legal restrictions, it is necessary that the building under consideration has a high degree of completeness of the plan for the external shape, and effective simulation should only be conducted after consideration has been made with the customer. In order to build a building to be considered as a model in a computer that cannot be implemented, specialized knowledge such as architecture and CAD is required, and even those who have specialized knowledge There is a problem of requiring a lot of time.

  When examining sunshine without using a computer, it is difficult to specify the position of the sun, and it is difficult to draw shadows on the wall according to the shape of the neighboring house unless you have expertise. There is a problem that the sunshine from the west and the east is rarely considered only by examining the time in the South and Central China.

  However, at the time of starting the study of the building, the customer may be required to have sunshine conditions for the individual living spaces that make up the building. However, the conventional shadow simulation can cope with such a requirement. There is no problem.

  In addition, when ensuring indoor "brightness", it is a guideline to comply with the provisions of the Building Standards Law, but the provisions of the law may not be able to adequately secure the lighting environment of indoor living spaces. is there. In addition, the “brightness” of the indoor space is to be secured by artificial lighting by design. In particular, the fact that securing “brightness” by natural light in a small-scale house has not been established as a practical problem.

  The object of the present invention is to reduce the time required for building a model by limiting the model only to the model around the opening, and the residential sunshine that can easily simulate the sunshine for individual living spaces even in the initial stage of the design. It is to provide a simulation method.

  In order to solve the above-described problem, the residential sunshine simulation method according to the present invention assumes that a building opening divided into a number of grids is a rectangular light source based on the brightness of the opening by sky light, and the light source Based on the above, the illumination distribution on the floor is calculated.

  In the residential sunshine simulation method, it is preferable to divide the floor surface into a grid and calculate the illuminance for each grid.

  In the residential sunshine simulation method according to the present invention, sunshine simulation can be performed by constructing a simulation model limited to the area around the opening without constructing a simulation model for the entire building. For this reason, it is possible to drastically reduce various elements necessary for building a model for simulation of the entire building. Therefore, the simulation model limited to the area around the opening can be constructed in a short time, and the examination at the initial stage of setting can be sequentially handled.

  In particular, since the simulation model to be constructed is limited to the area around the opening, even a salesperson who does not have architectural expertise can easily construct it. For this reason, it is possible to perform simulation on the spot while listening to customer requests and conditions at a housing exhibition hall or the like.

  As a result of executing the sunshine simulation, the customer can know the sunlight, the change in the sunlight condition, and the brightness according to the construction point, season, time, etc. of the target building. For this reason, it is possible to perform simulation by changing the position and shape of the opening one after another, and it is possible to easily realize a sunshine state that satisfies the customer in a short time.

  The residential sunshine simulation method of the present invention assumes a rectangular light source based on the brightness of the opening due to sky light entering the interior of the house from the opening of the building, and based on the light source, the illuminance distribution on the floor surface is calculated. Since the calculation is performed, it goes without saying that the indoor brightness of the building, that is, the daylighting environment of the living space can be simulated.

  In the following, a preferred embodiment of the residential sunshine simulation method will be described with reference to the drawings. FIG. 1 is a diagram showing an example of the appearance of a residential sunshine simulation apparatus that executes the residential sunshine simulation method, FIG. 2 is a block diagram illustrating the configuration of the residential sunshine simulation apparatus, and FIG. 3 is a simulation of sunshine simulation. FIG. 4 is a sun shadow diagram corresponding to the season, FIG. 5 is a diagram explaining the sun damage condition for the target opening, and FIG. 6 is a state in which the opening is divided into grids. FIG. 7 is a diagram for explaining the state of the opening that changes for each daylight disturbance condition. FIG. 8 is a diagram for multi-displaying the sunshine state that changes every hour when the location and season are specified. 9 is a diagram for explaining the relationship between the building and the opening when calculating the sky ratio, FIG. 10 is a diagram showing the illuminance distribution on the floor surface, and FIG. 11 is a diagram displaying the illuminance distribution on the floor surface in multiple displays.

  The residential sunshine simulation method according to the present invention operates in a place such as a residential exhibition hall while facing a customer, so that an individual building space and the living space are not specifically designed without designing the entire building. By specifying the shape of the opening to be formed and the conditions of obstacles to sunlight, the state of sunlight and the distribution of illuminance to the opening, and the amount of heat input from the sun can be calculated. . Then, by calculating and simulating the sunshine state and the illuminance distribution on the opening according to the season and time, it is possible to recognize the habitability of the individual living space.

  In the residential sunshine simulation method, only the individual living space, the shape and size of the opening formed in the wall surface of the living space, and the condition of the sunshine obstacle existing outside the opening are necessary. It is possible to simulate the sunshine condition easily and easily even without specialized knowledge about CAD or CAD.

  As shown in FIGS. 1 and 2, the residential sunshine simulation apparatus for executing the residential sunshine simulation method includes a solar position calculation means 1a, a sunshine calculation means 1b, an illuminance distribution calculation means 1c, a calorific value calculation means 1d, and a storage means 1e. And a control device 1 composed of a temporary storage device 1f and a computing device 1g, a display 2 and a printer 3 constituting a display device, and a keyboard 4a constituting an input device 4 for inputting information necessary for executing sunshine simulation, and It has a mouse 4b.

  Each of the arithmetic means 1a to 1d stores a program for executing a target arithmetic content, and when the information necessary for the arithmetic operation is input by the input device 4 and the arithmetic operation is started, the designated arithmetic means is operated. The content of the target is calculated and the result is displayed on the display 2 or printed by the printer 3 based on the designation.

  The sun position calculating means 1a calculates the sun position corresponding to the position (latitude, longitude), season and time of the target building on the earth.

  When the position on the earth, season, and time are specified, the position of the sun corresponding to each specified condition is uniquely determined. The position of the sun is the solar altitude (h °, the angle between a line connecting a specific point on the ground and the sun and the horizontal line at the point) and the azimuth angle of the sun (A °, the sun is in the south The west direction is positive and the east direction is negative), and can be calculated by the following equations, respectively.

sin (h) = sin (φ) · sin (δ) + cos (φ) · cos (δ) · cos (t)
sin (A) = cos (δ) · sin (t) · sec (h)
Where h: solar altitude (°)
φ: Latitude of destination (°)
δ: sun declination (°), summer solstice δ = 23.45, spring / autumn δ = 0, winter solstice δ = -23.45, t: hour angle (°), hour angle during true sun with 15 ° for 1 hour : Sun azimuth (°)
It is.

  A program for solving the above equations and a trigonometric function table are stored in the sun position calculation means 1a. When information such as the latitude, longitude, season, and time of the destination is input from the input device 4, these information are temporarily stored. When stored in the storage device 1f and instructed to execute the program, it is possible to calculate the position of the sun according to the conditions specified by the sun position calculating means 1a. Then, the calculated result can be stored or stored in the temporary storage device 1f.

  For example, FIG. 4 is a sun shadow map in Tokyo (latitude, φ = 35.68 °, longitude, 139.77 °). The shadow of a bar of unit length U set up vertically at the origin O is shown in the season (winter solstice, spring (Autumn, summer solstice) and the direction and length of the shadow corresponding to the time. That is, it shows the shadow formed by the bar of unit length according to the azimuth angle and solar altitude calculated based on the above formulas, and forms the basis of sunshine simulation by the opening formed in the building. is there.

  Therefore, by setting the wall orientation (α), which is the azimuth angle of the wall surface at a point having a specific latitude and longitude, and the wall inclination angle (θ), which is the inclination angle of the wall surface, It is possible to calculate a wall surface intersection angle (hw) that is an angle formed by

That is, sin (hw) = sin (h) · cos (θ) + cos (h) · sin (θ) · cos (A−α)
It is. When the wall surface intersection angle hw exceeds 90 °, the target wall surface is not exposed to the sun.

  The sunshine calculation means 1b includes the position of the sun calculated by the above-described solar position calculation means 1a, the specific shape of the opening formed in the building, and the walls, standing trees, etc. that exist outside the opening. The position and area of the sunshine irradiated to the opening are calculated based on the sunshine disturbance condition.

  For example, a building 5 as shown in FIG. 5 is provided with an overhang such as a veranda or a ridge 5a having a protruding dimension d, a sleeve wall 5b having a protruding dimension Wd, an opening 6, and a distance W When the neighbor 7 exists in a separated position, the position and area of the sunshine can be calculated based on the direction of the opening 6 and the wall 8. Reference numeral 9 denotes a floor surface formed inside the opening 6.

  In this embodiment, as shown in FIG. 6 (a), the surface of the wall 8 has a dimension of H = 100 mm in the vertical direction and W = 305/3 mm in the horizontal direction (three grids in the horizontal direction are 305 mm). And the position of the opening 6 in these grids is set to 1 (see FIG. 5B), and the y in the vertical direction is set at the center in the horizontal direction of the opening 6. Set the axis and the x-axis in the horizontal direction. In particular, in the present embodiment, as shown in FIG. 5B, openings 6 having 6 columns and 4 rows of grids are set, and the total area of the openings 6 is the number of 1 and 0.1. It is the product of × 305/3.

  The dimensions for dividing the wall 8 into grids are not limited to the above dimensions, and may be 100 mm both vertically and horizontally, and may be other dimensions. In other words, what size the wall 8 should be divided into is a problem to be set in consideration of conditions such as the area of the wall 8 and the accuracy to be obtained. In particular, the horizontal dimension is preferably associated with a preset module dimension, and there is no particular problem even if the vertical and horizontal dimensions of each grid are different.

  Then, after specifying the season and time when the sunshine condition should be examined, the position and area of the sunshine are calculated in consideration of the influence of the ridge 5a, the sleeve wall 5b, the neighbor 7 or the standing trees. The grid shown in the figure is schematic, and in actuality, a number of grids corresponding to the width and height of the target wall are formed, and the number corresponding to the width and height of the target opening is set. A grid is formed.

  FIGS. 7A to 7D show procedures and processes for calculating the sunshine state of the opening 6 shown in FIG. 5 corresponding to the season and time specified as described above.

  That is, FIG. 5A is a diagram in which the shadow portion by the neighbor 7 is checked. The solar altitude (tan h), the height of the neighbor 7 (H2), and the FL height of the room in which the opening 6 is designed ( H1) The azimuth angle (α) of the opening 6 is determined for each grid by the following equation.

tan h <(H2-H1-Y coordinate) / {W · sec (A-α)}
However, W is the distance to the neighbor. The grid satisfying the above formula is affected by the neighbor 7 and becomes a shadow. For this reason, the target portion (the shaded portion) of the opening 6 is blank, and the portion that is not shaded, that is, the sunshine portion is set to 1.

  The calculation as described above is performed for each grid, the calculation result is stored in the temporary storage device 1f, and further displayed on the display 2, so that, for example, as shown in FIG. It becomes clear that the grid is shaded.

  Next, FIG. 5B is a diagram in which a shadow portion by the sleeve wall 5b is checked. As a projected dimension (Wd) of the sleeve wall 5b, and a distance (Wk) from the center of the opening 6 to the sleeve wall 5b. The determination is made for each grid by the following equation.

  tan (A−α)> | Wk−X coordinate | / Wd Since the grid satisfying the above expression becomes a shade due to the influence of the sleeve wall, the target portion of the opening 6 (the shaded portion) is blank. And a portion that does not become a shadow, that is, a sunshine portion is set to 1.

  The calculation as described above is performed for each grid, the calculation result is stored in the temporary storage device 1f, and further displayed on the display 2, for example, two grids on the left side as shown in FIG. It becomes clear that is in the shade.

  Next, FIG. 10C is a diagram in which the shadow portion due to the overhang of the veranda, the ridge 5a, etc. is checked. As the protruding dimension (Od) of the ridge 5a and the lower end height (OH) of the ridge 5a, Each grid is determined by an expression.

tanh> (OH-Y coordinate) / {d · sec (A−α)}
Since the grid satisfying the above formula becomes a shade due to the influence of the overhang, the target portion (the shade portion) of the opening 6 is left blank, and the portion that does not become a shadow, that is, the sunshine portion is set to 1. .

  The calculation as described above is performed for each grid, the calculation result is stored in the temporary storage device 1f, and further displayed on the display 2, so that, for example, as shown in FIG. It becomes clear that the grid is shaded.

  As described above, a program and a trigonometric table for solving each equation corresponding to each sunlight obstacle condition are stored in advance in the sunlight calculation means 1b. And after memorize | storing the information of the sunshine obstacle condition input from the input device 4 in the temporary memory | storage device 1f, each grid set to the opening part according to the calculation result of the solar position calculated by the solar position calculating means 1a It is possible to calculate every time and store the calculated result or store it in the temporary storage device 1f. Then, by calculating the influence of the sunshine obstacle condition on the target opening 6, it is possible to determine the sunshine state of the opening 6 corresponding to the season and time specified in advance and resulting from the individual sunshine obstacle conditions. It is.

  The calculation result of the sunshine state caused by the individual sunshine disturbance condition is stored in the temporary storage unit 1f, and after all the calculations are completed, the numerical value for each grid is confirmed. It is determined as a portion that did not become a shadow despite the conditions, and a grid having a numerical value of 3 or less is determined as a portion that has become a shadow due to any of the sunshine disturbance conditions.

  Then, as shown in FIG. 4D, the grid with the numerical value of the opening 6 set to 4 is set to 1, and the grid with numerical values of 1, 2 and 3 is painted and displayed on the display 2 to display the target opening. It is possible to simulate the sunshine condition associated with the sunshine disturbance condition in a specific season and time for the unit 6. Furthermore, by changing the time and displaying the simulation result for each time on the same display 2 or by recording with the printer 3, it is possible to simulate a sunshine state that changes over time.

  Further, it is possible to calculate the number of sunshine grids and calculate the sunshine area fm by the product of this value and 0.1 × 0.305 / 3.

  FIG. 8 is a diagram showing the result of simulation every hour from 8 am to 4 pm. In addition, each condition at the time of simulation is 8m as the conditions of place, Tokyo, season, winter solstice, opening azimuth angle 0 degree (facing south), opening width 1648mm, height sky 1994mm, lower edge 124mm It is set up as a two-story building with an overhang of 447mm in size, aligned with the top of the opening, and a sleeve wall with an output of 1830mm at a position of 915mm on the left side from the center of the opening when viewed from the indoor side.

  In the figure, the first line in the left column shows the sunshine state of the opening at 8 am, and the second line is arranged at 9 o'clock and the third line at 10 o'clock. As a result of this simulation, it is found that the sun gradually starts from 10 am in the target opening, and the sunshine condition is best at 12:00 and 1 pm, and it becomes a shadow after 3 pm. In this way, it is possible to simulate the sunshine state according to the season and time by appropriately setting the target opening condition and the sunshine obstacle condition without considering the entire structure of the building.

  The illuminance distribution calculating means 1c calculates the illuminance distribution of the floor surface 9 through the opening 6 from the calculation results of the solar position calculating means 1a and the sunshine calculating means 1b. When the opening 6 is a window and the illuminance distribution of the solar radiation irradiated on the floor surface through the opening 6 is calculated, the opening 6 is assumed to be a rectangular light source based on the brightness of the window surface by skylight and the floor. It is possible to calculate the illuminance Es (Lx) by Equation 2 based on the distance from the lattice to the opening 6 for each lattice, assuming a large number of lattices whose sides are divided by 305 mm on the surface.

  First, calculation of the sky factor will be described. The sky factor Up of the point P in the opening 6 is given by equation (1), and the sky factor Up of the point PP facing the point P in the neighbor 7 is given by equation (2). Here, when the whole sky illuminance is Eo, the direct daylight illuminance Ep at the point P and the direct daylight illuminance Ep at the point PP are given by Ep = Up · EoEpp = Upp · Eo. In addition, Up and Upp are given by Equations (1) and (2) of Equation 1, respectively.

  Assuming that the reflectance of the wall surface of the neighbor house 7 is R, and all the reflected light of the wall surface is incident on the point P, the reflected light illuminance Esp at the point P is Esp = Epp · R. When the transmittance of the opening 6 is T, the total transmitted daylight illuminance Ept at the point P is Ept = (Ep + Esp) · T, and the average total transmitted daylight illuminance of the opening 6 is given by Equation 1. It is given by equation (3).

  Accordingly, assuming that the opening 6 is a light source having the above average total transmitted illuminance, the illuminance distribution of the floor 9 is calculated by calculating the illuminance of the grid at the position separated from the opening 6 by the distance L by Equation 2. Can be calculated.

  The illuminance distribution calculating means 1c stores a program for solving the above equations, and the temporary storage device 1f stores information on the season, time, height from the floor 9, and dimensions of the opening 6 itself, which are input from the input device 4. After that, it is possible to calculate the illuminance distribution on the floor surface 9 according to the calculation results calculated by the solar position calculation means 1a and the sunshine calculation means 1b. Then, the result of calculating the illuminance for each grid set on the floor is stored in the temporary storage device 1f, and after calculating the illuminance of all the grids, the calculation result is displayed on the display 2 or by the printer 3. By recording, the illuminance distribution shown in FIGS. 10 and 11 can be simulated.

  10 and 11 show the results of calculation under the same conditions as in FIG. 8, and in particular, FIG. 10 is an enlarged view of the illuminance distribution at 10:00 am. FIG. 11 is an illuminance distribution diagram obtained as a result of calculating every hour from 8 am to 4 pm. In this way, it is possible to carry out a simulation of the illuminance distribution irradiated into the room from the opening 6.

  The calorific value calculating means 1d calculates the amount of heat input to the opening 6 from the calculation results of the solar position calculating means 1a and the sunshine calculating means 1b. For example, in a building in which the opening 6 shown in FIG. 5 is formed, the heat input Jαθ (kcal / m 2 h) to the opening 6 is given by the following equation.

Jαθ = (J0 / r2) ・ Pcosec (h) ・ sin (hw) However, J0: Solar constant (1164kcal / m2h)
r: percentage of the Earth's orbit radius relative to the average summer solstice; r = 1.0164 spring equinox; r = 0.9662 fall equinox; r = 1.0033 winter solstice; r = 0.9836 P: atmospheric transmittance (P = 0.7)
h: Solar altitude hw: Wall crossing angle In particular, the amount of solar radiation that passes through the window as the opening 6 is Jr = Jαθ · a · p, where a: the area of the opening 6 p: the transmittance of the window glass.

  Next, a procedure for performing sunshine simulation through the opening 5 by the residential sunshine simulation method having the respective calculation units 1a to 1d as described above will be described with reference to FIG.

  First, the position on the earth where the target building is to be built is input by the input device 4 in latitude and longitude, and information on the season and time at which the sunshine simulation is to be performed is input. Further, the direction of the opening 5 (azimuth) Information such as corners, inclination angles), shape (dimensions) of the opening 6, and conditions of sunlight obstacles existing outside the opening 6 (neighboring 7, overhangs of the heel 5 a, sleeve walls 5 b, etc.) .

  In step S1, the solar position consisting of the solar altitude (h °) and the solar azimuth angle (A °) is calculated by the solar position calculation means 1a based on the input information. The solar altitude and the solar azimuth are the most basic information for simulating sunshine, and are related to all calculations performed thereafter.

  In step S2, the sun position with respect to the opening 6 is calculated from the calculation result of step S1 and the direction of the opening 6 following step S1. By passing through this step S2, it becomes possible to set the relationship between the opening 6 and the sun in correspondence with the specific opening 6 in the target building. Therefore, it is used for all of the calculation of the position and area of sunshine for the opening 6, the calculation of the illuminance distribution on the floor surface that has passed through the opening 6, and the calculation of the amount of heat input to the opening 6. For this reason, the calculation result by step S2 is memorize | stored in the temporary memory device 1f, and is read and utilized when performing each said step.

  Next, in step S3, the sunshine calculation means 1b uses the calculation result of step S2, the shape of the opening 6 and the condition of the sunshine obstacle existing outside the opening 6 to adjust the sunshine of the opening 6. Calculate position and area. The calculation result of the position and area of sunshine in step S3 is transmitted to step S4 and displayed on the display 2. The calculation result in step S3 is transmitted to step S5 simultaneously with step S4, and stored in the storage device 1e in step S5.

  In particular, in step S3, the position and area of sunshine is calculated for each season and time, and the calculation result is stored in the storage device 1e in step S5. By displaying all the data stored in the multi-display, the position and area of the sunshine changing according to the season and time as shown in FIG. 8 can be displayed on one screen or on one drawing. Is possible.

  When calculating the illuminance distribution irradiated on the floor surface through the opening 6, the process proceeds to step S 7, and when the transmission coefficient of the window glass is input from the input device 4, the opening 6 obtained in step S 2 is obtained in step S 7. The illuminance distribution on the floor is calculated by the illuminance distribution calculation means 1c from the calculation result of the sun position with respect to or the calculation result of the sun position with respect to the opening 6 obtained in step S3. The calculation result is displayed on the display 2 or recorded by the printer 3 in step S8, and the illuminance distribution shown in FIG. 11 is displayed on one screen or on one drawing by displaying all data in a multi display. It is possible to display.

  Moreover, when calculating the calorie | heat amount input into a floor surface through the opening part 6, it transfers to step S9, the transmission coefficient of the window glass input from the input device 4, and the solar position with respect to the opening part 6 obtained at step S2 The amount of heat input to the floor surface is calculated by the amount-of-heat calculating means 1d from the result of the above calculation or the calculation result of the sun position with respect to the opening 6 obtained in step S3. The calculation result is displayed on the display 2 in step S10 or recorded by the printer 3.

  The building construction point (latitude, longitude) is determined as described above, and the direction of the opening 6 in the building, and the neighbor 7 existing outside the opening 6, the veranda, the fence 5a, etc. If the conditions of the sun-hung obstacle such as the overhang portion or the sleeve wall 5b and further standing trees are determined, it is possible to simulate the change in the position and area of the sunlight irradiated to the opening 6 according to the season and time. Furthermore, when the material constituting the opening 6, for example, when the opening 6 is a window, it is possible to calculate the illuminance distribution on the floor surface and simulate the change in illuminance by determining the transmittance of the window glass. It is possible to calculate the amount of heat input to the opening 6.

  As described above, in the residential sunshine simulation method according to the present embodiment, the opening 6 and the space are assumed and the sunshine obstacle existing outside the opening 6 is assumed regardless of the design of the entire building. It is possible to carry out a sunshine simulation.

  In the present embodiment, when simulating the illumination distribution based on sunlight through the opening 6, the floor is divided into a grid with a side length set to 100 mm or 305 mm, for example. It is preferable to calculate the illuminance. In this way, by dividing the floor surface into a lattice shape and calculating, the calculation in the illuminance distribution calculating means 1c can be reasonably processed.

  The residential sunshine simulation method of the present invention calculates the scorched soil distribution on the floor surface assuming a rectangular light source based on the brightness of the opening by skylight, so it can be used regardless of the shape of the trending part. Is possible.

It is a figure which shows the example of the external appearance of the sunshine simulation method for houses. It is a block diagram explaining the structure of the sunshine simulation method for houses. It is a figure explaining the procedure which performs the simulation of sunshine and displays a result. It is a shadow figure of the sun corresponding to a season. It is a figure explaining the sunlight disturbance conditions with respect to the target opening part. It is a figure explaining the state which divided | segmented the opening part into the grid. It is a figure explaining the state of the opening part which changes for every sunlight damage condition. It is the figure which multi-displayed the sunshine state which changes for every hour when a place and a season are specified. It is a figure explaining the relationship between the building at the time of calculating a sky rate, and an opening part. It is the figure which displayed the illumination distribution of the floor surface. It is the figure which displayed the illuminance distribution of the floor surface in multiple displays.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control apparatus 1a Sun position calculating means 1b Sunlight calculating means 1c Illuminance distribution calculating means 1d Calorie | distribution calculating means 1d Calorific value calculating means 1e Storage means 1f Temporary storage device 1g Arithmetic apparatus 2 Display 3 Printer 4 Input device 4a Keyboard 4b Mouse 5 Building 5a 庇 5b Sleeve wall 6 Opening 7 Next house 8 Wall 9 Floor

Claims (2)

Assuming a building opening divided into a number of grids as a rectangular light source based on the brightness of the opening due to skylight, and calculating the illuminance distribution on the floor based on the light source Sunlight simulation method. The residential sunshine simulation method according to claim 1, wherein the floor surface is divided into a lattice shape, and the illuminance for each lattice is calculated.