JP2012108571A - House design system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a house design system in which a house heat insulation performance can be satisfied while meeting the client needs for appearance design, room layout and the like.SOLUTION: A house design system comprises an administrative server and a branch terminal which is provided in each of branches of a house selling company and operated by a sales staff member when dealing with a client. A client request data acquisition section 21 acquires client request data including appearance design and room layout for design of a house X. A first design section 22 performs primary design of the house X on the basis of the client request data acquired by the client request data acquisition section 21. A heat insulation performance evaluation section 23 evaluates a heat insulation performance for the house X designed by the first design section 22. A second design section 24 performs a design change for an outer cover portion M of the house X designed by the first design section 22 on the basis of an evaluation result of the heat insulation performance by the heat insulation performance evaluation section 23. A house display section 25 displays on a display section 19 the house X design-changed by the second design section 24.

Description

  The present invention relates to a housing design system.

  2. Description of the Related Art In recent years, with regard to housing purchase, customer needs for housing exterior design and layout have been diversified. Therefore, the housing sales company proposes various housing plans to the customer to meet such customer needs.

  In recent years, a house with excellent heat insulation performance has been demanded from the viewpoint of energy saving and the like, and the house distributor may present the heat insulation performance of the house to the customer side. In the housing performance display system stipulated based on the law on the promotion of ensuring the quality of houses (common name: Quality Assurance Law), energy conservation measures are defined as standards for the heat insulation performance of houses. The energy saving measure class is determined based on the heat loss coefficient Q of the house, the summer solar radiation acquisition coefficient μ, and the like. The energy saving measure class, the heat loss coefficient Q, and the summer solar radiation acquisition coefficient μ are all indexes indicating heat insulation performance, and a home sales company, for example, presents heat insulation performance to customers using these heat insulation indexes. Patent Document 1 discloses a device that inputs design data related to a house and calculates a heat loss coefficient Q based on the design data.

JP-A-10-239161

  Here, if there is a strong customer need for exterior design and layout, if the housing design is concentrated on exterior design and layout, the insulation performance may not meet the desired performance level. Will be forced to redesign the house. On the other hand, if the housing design that emphasizes the heat insulation performance is performed from the beginning, there are restrictions on the appearance design and the floor plan, and there is a possibility that the customer needs cannot be satisfied with respect to the appearance design and the floor plan.

  This invention is made | formed in view of the said situation, and it aims at provision of the housing design system which can satisfy housing heat insulation performance, satisfy | filling the customer needs regarding an external appearance design and a floor plan.

  In order to solve the above-described problem, a housing design system according to a first aspect of the present invention is based on customer request acquisition means for acquiring customer request data including at least one of appearance design and floor plan for housing design, and the customer request data. Based on the first design means for designing a house, the heat insulation performance evaluation means for evaluating the heat insulation performance of the house designed by the first design means, and the evaluation result by the heat insulation performance evaluation means, the first design means A second design means for changing the design of a predetermined heat insulation function part as a part relating to heat insulation performance in the designed house; and a housing display means for displaying the house whose design has been changed by the second design means on a display display. It is characterized by providing.

  According to the present invention, at the time of designing a house, first, the design of the house is performed with priority given to customer request data relating to appearance design and floor plan (primary design). Thereby, the house according to a customer's favorite external appearance design and floor plan is designed. In addition, the heat insulation performance is evaluated for the designed house, and the design change is performed on the heat insulation functional part of the designed house based on the evaluation result (secondary design). Therefore, for example, when it is evaluated that the heat insulation performance of a designed house is less than the customer's request, the design can be changed to enhance the heat insulation performance. Since the house whose design has been changed is displayed on the display, it is possible to present to the customer an alternative house plan that satisfies the heat insulation performance based on the house plan that was assumed from the beginning. Thereby, the requirements regarding the heat insulation performance can be satisfied without significantly deviating from the external appearance design and floor plan that the customer originally wanted.

  In addition, even if the thermal insulation performance of the primary designed house does not meet the customer's requirements, the design change is made based on the primary designed house, so the design change from the first is not forced. Can be minimized.

  According to a second aspect of the present invention, there is provided a housing design system according to the first aspect, wherein the heat insulation performance evaluation means is insufficient or excessive for the heat insulation performance of the house designed by the first design means with respect to a preset target heat insulation performance. Over and shortage determining means for determining whether or not the second design means performs a design change on a heat insulation functional part of the house designed by the first design means based on a determination result by the excess or shortage determination means. Features.

  According to the present invention, based on whether the thermal insulation performance of the house primarily designed according to the customer's favorite appearance design or floor plan is insufficient or excessive with respect to the target thermal insulation performance requested by the customer, Design changes will be made to the primary designed houses. Therefore, if the heat insulation performance of the primary designed housing is insufficient for the target heat insulation performance, the design can be changed to improve the heat insulation performance to satisfy the target heat insulation performance, When the heat insulation performance is excessive with respect to the target heat insulation performance, it is possible to reduce the housing manufacturing cost within a range that satisfies the target heat insulation performance by changing the design to lower the heat insulation performance. Thereby, it becomes possible to present a housing plan with a higher degree of satisfaction for the customer while satisfying the thermal insulation performance required by the customer.

  According to a third aspect of the present invention, there is provided the housing design system according to the first or second aspect, wherein the second design means is based on the evaluation result by the heat insulation performance evaluation means, and the heat insulation of the house designed by the first design means. A specification change proposal for a functional part is created, and a change proposal display means for displaying the specification change proposal on the display is provided, and based on the specification change proposal for the heat insulation functional part displayed on the display display, It is characterized by changing the design of a house designed by one design means.

  According to the present invention, based on the evaluation result of the heat insulation performance of the house that is primarily designed according to the customer's favorite appearance design and floor plan, a specification change plan is created for the heat insulation functional part of the house. This specification change proposal is displayed on the display, and for example, the customer can determine a desired change proposal while referring to the specification change proposal for the displayed heat insulation function part. Then, based on the determined preference change plan, the design change of the primarily designed house is performed. In this case, while satisfying the thermal insulation performance required by the customer, it is possible to incorporate the customer's request regarding the design change, and it is possible to present a housing plan that further meets the customer's needs.

  The housing design system according to a fourth aspect of the present invention is the housing design system according to any one of the first to third aspects, wherein the second design means prioritizes setting a priority change condition regarding what change should be given priority when making a design change. A change condition setting unit is provided.

  ADVANTAGE OF THE INVENTION According to this invention, when changing the design of the heat insulation functional part of the house designed primary, the priority change condition regarding what change should be given priority can be set. For example, it is possible to set conditions such as changing the design with priority on a predetermined opening, or changing the design with priority on other than the predetermined opening. Thereby, since a customer's needs can be considered at the time of a design change, it becomes possible to show the customer the house according to a customer's needs further.

  According to a fifth aspect of the present invention, there is provided the housing design system according to any one of the first to fourth aspects, wherein the customer request data acquired by the customer request acquisition means is a model selected from a plurality of housing models having different construction methods. Selection data is included, the first design means designs a house based on customer request data including the type selection data, and the second design means includes the house designed by the first design means The same-type design means for making the design change to the same type of house, and the atypical design means for making the design change to a house of a different type from the house designed by the first design means, the house display means Is characterized in that each type of house whose design has been changed by the same type design means and the different type design means is displayed on the display.

  According to the present invention, in addition to the type of house that the customer originally assumed, a different type of house can be presented to the customer. Thereby, the variation of the housing plan which can be shown with respect to a customer can be increased, and possibility that the housing plan which a customer desires can be provided to a customer can be improved.

  According to a sixth aspect of the present invention, there is provided a housing design system according to any one of the first to fifth aspects, further comprising housing cost evaluation means for evaluating a manufacturing cost of the house designed by the first design means, and the second design means. Is characterized in that, based on the evaluation result by the housing cost evaluation means in addition to the evaluation result by the heat insulation performance evaluation means, the design is changed for the heat insulation functional part of the house designed by the first design means.

  According to the present invention, the evaluation of the manufacturing cost is performed together with the evaluation of the heat insulation performance for the house which is primarily designed according to the customer's favorite appearance design and layout. Then, based on the evaluation result of the manufacturing cost in addition to the evaluation result of the heat insulation performance, the design change is performed on the heat insulation functional part of the primary designed house. As a result, an alternative housing plan that satisfies the cost in addition to the heat insulation performance can be presented to the customer while being based on the housing plan assumed from the beginning. Therefore, it is possible to satisfy not only the requirements regarding the heat insulation performance but also the requirements regarding the manufacturing cost without greatly deviating from the external appearance design and floor plan that the customer originally wanted.

The figure which shows the electrical constitution of a house design system. The functional block diagram which shows the outline | summary of a house design evaluation process. The functional block diagram which shows the heat insulation performance evaluation process. The functional block diagram which shows a secondary design process. The figure which illustrated the outline of the house. Explanatory drawing for demonstrating a construction area. Explanatory drawing for demonstrating Q value grade. Explanatory drawing for demonstrating microvalue grade. The figure which shows the display screen which displayed the specification change proposal of the outer skin site | part. The figure which shows the display screen which displayed the house. The functional block diagram which shows the outline | summary of the house design evaluation process in another example.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a housing design system is designed in which a house is designed based on a customer request regarding the design of the house and the insulation performance of the house is evaluated at the time of the design. First, an outline of this system will be described with reference to FIG. FIG. 1 is a diagram showing an electrical configuration of the house design system. Further, in this embodiment, the sales staff of a home sales company asks customers about various housing requests at the time of an interview with a customer who visited the sales company. It is assumed that the design and various evaluations regarding the designed housing will be performed.

  As shown in FIG. 1, the housing design system 10 includes a management server 11 provided in a management center of a home sales company, and a branch terminal 12 provided in each branch of the home sales company and operated by sales staff when dealing with customers. It is configured. The management server 11 and each branch terminal 12 are connected via an external communication network such as the Internet, and can exchange information with each other. In FIG. 1, only the branch terminal 12 of one branch is shown for convenience.

  The management server 11 performs various controls in the house design system 10. The management server 11 includes a control unit 14 and a storage unit 15, and is configured by a terminal device such as a personal computer. The control unit 14 performs various processes such as a house design process and a heat insulation performance evaluation process. The storage unit 15 stores a control program that executes various processes such as a design process and a thermal insulation performance evaluation process, and a database that stores various information necessary for the thermal insulation performance evaluation and the like.

  The branch terminal 12 includes a control unit 17, an operation unit 18, and a display unit 19, and is configured by a terminal device such as a personal computer. The control unit 17 is connected to the operation unit 18 and the display unit 19.

  The operation unit 18 receives input of various information such as information necessary for evaluating the housing design and the heat insulation performance, and includes, for example, a keyboard and a mouse. In this embodiment, the sales staff at the branch of the housing sales company asks various information about the house from the customer, and the sales staff inputs the found information to the operation unit 18. The display unit 19 displays various information such as the designed house and the evaluation result of the heat insulation performance, and includes, for example, a display.

  When an input operation is performed on the operation unit 18, information corresponding to the input operation is input to the control unit 17, and the control unit 17 transmits the information to the management server 11. The management server 11 performs various processes such as housing design and heat insulation performance evaluation based on various information transmitted from the control unit 17 of the branch terminal 12. And the management server 11 transmits the result of a process to the branch terminal 12 (control part 17) as needed. When the processing result is received at the branch terminal 12 (control unit 17), the control unit 17 causes the display unit 19 to display the processing result. Thereby, the designed house, the evaluation result of the heat insulation performance, and the like can be presented to the customer at each branch of the house sales company.

  Next, the flow of the house design evaluation process executed by the house design system 10 will be described with reference to FIG. FIG. 2 is a functional block diagram showing an outline of the house design evaluation process. In this embodiment, each functional block in each figure is realized by the management server 11 and the branch terminal 12. Specifically, among the functional blocks 21 to 27 in the figure, the customer request data acquisition unit 21, the first design unit 22, the heat insulation performance evaluation unit 23, and the second design unit 24 are the management server 11 (control unit 14). The house display unit 25, the house plan determination unit 26, and the output unit 27 are executed by the branch terminal 12 (control unit 17). In addition, the distribution method to each of the functional blocks 21 to 27 to the management server 11 and the branch terminal 12 is not necessarily limited thereto, and for example, all the functional blocks 21 to 27 may be executed on the branch terminal 12 side. .

  FIG. 5 illustrates a schematic diagram of a house X designed according to a customer's request. This house X is assumed to be a two-story unit type house consisting of a unit construction method, (a) is a sectional view showing the whole house X, (b) is a diagram showing a floor plan of the first floor part of the house X, It has become. Here, it is assumed that the house design evaluation process is performed for the house X.

  As shown in FIG. 2, when a customer request regarding the design of the house X is input from the branch terminal 12 side, the customer request data acquisition unit 21 acquires the customer request including the exterior design and layout of the house X as customer request data. To do. In this embodiment, as customer request data, data such as the model of the house X (that is, a unit-type house consisting of a unit method), the volume B, the total floor area S, the part data of each part constituting the house X, etc. get. Note that the model data of house X corresponds to selected model data selected from a plurality of house models with different construction methods (for example, a unit-type house with a unit method or a steel-frame type house with a steel frame method). To do. Further, the part data includes data of a building outer skin part (hereinafter referred to as an outer skin part M) having a heat insulating function, and more specifically, a roof M1, an outer wall M2, an opening M3 (more specifically, a window opening M3a and Data on the door opening M3b), the floor M4, the dirt floor M5 (specifically, the dirt floor of the entrance), and the like are included. The data of each skin part M includes data indicating the area A of the skin part M, data indicating the size and arrangement of each constituent member constituting the skin part M, data indicating the material of each constituent member, and the like. ing. Here, the skin portion M corresponds to a heat insulating functional portion. Further, the floor M4 does not include the dirt floor M5.

  The first design unit 22 performs the primary design of the house X based on the customer request data acquired by the customer request data acquisition unit 21. The first design unit 22 designs the house X using, for example, a CAD program for house design (the same applies to the second design unit 24 described later). Thereby, the house X is primarily designed according to the customer's favorite appearance design and floor plan.

  The heat insulation performance evaluation unit 23 evaluates the heat insulation performance of the house X designed by the first design unit 22. Thereby, heat insulation performance is evaluated about the house X which consists of a customer's favorite external appearance design and floor plan.

  The second design unit 24 performs a design change as a secondary design for the outer skin portion M of the house X designed by the first design unit 22 based on the evaluation result of the heat insulation performance by the heat insulation performance evaluation unit 23. As a result, the house X satisfying the heat insulation performance is secondarily designed while being based on the house plan according to the customer's favorite appearance design and floor plan. Each process described above is performed on the management server 11 side, and each process described below is performed on the branch terminal 12 side.

  The house display unit 25 causes the display unit 19 to display the house X whose design has been changed (secondary design) by the second design unit 24. Specifically, the house X secondarily designed on the management server 11 side is transmitted from the server 11 to the branch terminal 12 side. Then, the house display unit 25 causes the display unit 19 to display the house X received at the branch terminal 12. Thereby, the alternative housing plan satisfying the heat insulation performance can be presented to the customer based on the customer's original housing plan.

  The housing plan determination unit 26 determines the house X displayed on the display unit 19 by the housing display unit 25 as a final housing plan based on a customer's request. Specifically, when it is determined that the customer is satisfied with the displayed house X, the house plan determining unit 26 determines the house X as the final house plan. This determination is made based on the customer's request input to the operation unit 18.

  When the housing X displayed on the display unit 19 is determined as the final housing plan by the housing plan determination unit 26, the output unit 27 prints the housing plan (for example, an external view and floor plan of the house X) with a printer (illustrated). (Omitted). Thereby, the alternative house plan determined based on the customer's request can be handed over to the customer as printed matter, and the customer can be encouraged to consider purchasing the house X.

  Next, the heat insulation performance evaluation process by the heat insulation performance evaluation part 23 is demonstrated in detail based on FIG. FIG. 3 is a functional block showing the heat insulation performance evaluation process.

  As shown in FIG. 3, in the heat insulation performance evaluation unit 23, the heat insulation performance calculation unit 30 calculates the heat insulation performance for the house X designed by the first design unit 22, and the heat insulation performance evaluation unit 23 calculates the same. The heat insulation performance calculated by the unit 30 is evaluated. Here, in this embodiment, for example, the heat insulation performance calculation unit 30 calculates an energy saving measure class that is one of the heat insulation performance indexes indicating the heat insulation performance of the house X, and the heat insulation performance evaluation unit 23 calculates the calculation. The heat insulation performance of the house X is to be evaluated based on the energy saving measure class. Therefore, first, the flow of the energy saving measure class calculation process performed by the heat insulation performance calculation unit 30 will be described first. The calculation of the energy saving measure class can be realized by applying a known technique, and the energy saving measure class may be calculated not only by the following calculation process but also by other processes.

  Note that the heat insulation performance evaluation in the heat insulation performance evaluation unit 23 is not necessarily performed based on the energy saving measure grade, and is performed based on other heat insulation performance indexes such as a heat loss coefficient Q and a summer solar radiation acquisition coefficient μ described later. Also good.

  In the heat insulation performance calculation unit 30, the heat insulation characteristic database 31 stores heat insulation characteristic data related to the heat insulation characteristic in the outer skin part M. The heat insulation characteristic database 31 stores, for each skin region M, data such as the heat transmissibility U, the temperature difference coefficient H, and the summer solar radiation penetration rate η as the heat insulation characteristic data. The heat insulation characteristic database 31 is constructed by the storage unit 15 of the management server 11.

  In the Q value calculation unit 32, based on the customer request data acquired by the customer request data acquisition unit 21 and the heat insulation characteristic data of each outer skin part M stored in the heat insulation characteristic database 31, the heat loss coefficient (Q Value). In this case, the heat loss coefficient Q is calculated using the following equation (1).

Q = (total heat loss in each skin region Mi + heat loss due to ventilation) / total floor area (1)
Here, the amount of heat loss of the skin portion Mi is obtained by calculating the product of the heat flow rate and the area of the skin portion Mi (heat loss amount of the skin portion Mi = heat flow rate × area).

  More specifically, the heat loss coefficient Q is calculated using the following equation (2).

Q = [ΣAiUiHi + Σ (LfUlHi + AfUf) +0.35 nB] / S
... (2)
Here, Ai is the area of the outer skin part Mi, Ui is the thermal conductivity of the outer skin part Mi, Hi is the temperature difference coefficient of the outer skin part Mi, n is the ventilation frequency, B is the air volume in the house X, and S is the total floor area. It is. Lf is the length of the outer periphery of the interstitial floor M5, Ul is the thermal conductivity of the outer periphery of the interstitial floor M5, Af is the area of the central part of the interstitial floor M5, and Uf is the thermal transmissivity of the central part of the interstitial floor M5. .

  That is, in the Q value calculation unit 32, the data such as the area Ai of each outer skin part Mi, the air volume B in the house X, the total floor area S, and the like included in the customer request data acquired by the customer request data acquisition unit 21, and the heat insulation A heat loss coefficient Q is calculated based on the heat flow rate Ui and the temperature difference coefficient Hi of each outer skin part Mi stored in the characteristic database 31.

  The construction area acquisition unit 33 acquires construction area information that the customer desires to construct the house X. As shown in FIG. 6, the construction area is divided into areas I to VI. When the construction area of the house X is input from the branch terminal 12, the construction area is transmitted to the management server 11 side. When the construction area is received on the management server 11 side, the construction area acquisition unit 33 acquires the section corresponding to the received construction area as the construction area information.

  In the Q value grade determination unit 34, based on the heat loss coefficient Q calculated by the Q value calculation unit 32 and the construction area information acquired by the construction area acquisition unit 33, the grade of the heat loss coefficient Q (hereinafter referred to as Q value). Grade). As shown in FIG. 7, the storage unit 15 stores in advance a table in which the Q value grade is associated with the reference value of the heat loss coefficient Q assigned to each construction area I to VI. The determination unit 34 determines the Q value grade using this table. For example, if the construction area is IV (eg, Tokyo) and the heat loss coefficient Q calculated by the Q value calculation unit 32 is 3.0, the Q value grade is determined to be 3.

  In the μ value calculation unit 36, the summer solar radiation acquisition coefficient of the house X (based on the customer request data acquired by the customer request data acquisition unit 21 and the heat insulation characteristic data of each outer skin region M stored in the heat insulation characteristic database 31. (μ value) is calculated. In this case, the summer solar radiation acquisition coefficient μ is calculated using the following equation (3).

μ = amount of solar radiation entering house X / total floor area (3)
Here, the amount of solar radiation entering the house X is the total amount of solar radiation entering the house X through the roof M1, the outer wall M2, and the opening M3.

  More specifically, the summer solar radiation acquisition coefficient μ is calculated using the following equation (4).

μ = Σ (ΣAijηij) vj / S (4)
Here, vj is the orientation coefficient of the orientation j, ηij is the summer solar radiation acquisition rate in the orientation j at the skin portion Mi (specifically, the roof M1, the outer wall M2, and the opening M3), and Aij is the area of the skin portion Mi in the orientation j. (However, the horizontal projection area for the roof M1).

  That is, in the μ value calculation unit 36, the data of the area Aij and the total floor area S for each direction of the roof M1, the outer wall M2, and the opening M3 included in the customer request data acquired by the customer request data acquisition unit 21, and the heat insulation A summer solar radiation acquisition coefficient μ is calculated based on the summer solar radiation penetration rate ηij for each direction of each of the parts M1 to M3 stored in the characteristic database 31 and the direction coefficient vj. The orientation coefficient vj is obtained based on the orientation of the outer skin parts M1 to M3 and the construction area information acquired by the construction area acquisition unit 33. Specifically, the storage unit 15 stores in advance a table in which the orientation coefficient vj is associated with the orientation j of the outer skin parts M1 to M3 and the construction areas I to VI, and the μ value calculation unit 36 stores the table. Is used to determine the orientation coefficient vj.

  In the μ value grade determination unit 37, based on the summer solar radiation acquisition coefficient μ calculated by the μ value calculation unit 36 and the construction area information acquired by the construction area acquisition unit 33, the grade of the summer solar radiation acquisition coefficient μ (hereinafter, (called μ value grade). As shown in FIG. 8, the storage unit 15 stores in advance a table in which the μ value grade is associated with the reference value of the summer solar radiation acquisition coefficient μ assigned to each construction region I to VI. The grade determination unit 37 determines the μ value grade using this table. For example, if the construction area is IV (eg, Tokyo) and the summer solar radiation acquisition coefficient μ calculated by the μ value calculation unit 36 is 0.08, the μ value grade is determined to be 3.

  The energy saving grade determination unit 38 determines an energy saving measure class based on the Q value grade determined by the Q value grade determination unit 34 and the μ value grade determined by the μ value grade determination unit 37. The energy saving grade determination unit 38 determines the lower one of the Q value grade and the μ value grade as the energy saving measure grade. Here, according to the provisions of “5-1 Energy Conservation Measure Grade” in the housing performance display system, the Q value grade and the μ value grade are defined according to the standards for the prevention of condensation (hereinafter referred to as “dew condensation prevention”). The lowest grade among the three grades (called “grade”) is defined as the energy conservation measure grade (hereinafter referred to as “energy conservation grade”). Does not go. For this reason, in this evaluation process, as described above, the energy saving grade is determined based on the two grades of the Q value grade and the μ value grade.

  However, a condensation prevention class determination unit that determines the condensation prevention class based on the customer request data acquired by the customer request data acquisition unit 21 is provided. In the energy saving class determination unit 38, the Q value class determination unit 34, the μ value class You may make it determine the lowest grade among the three grades determined by each determination part of the determination part 37 and the dew condensation generation | occurrence | production prevention grade determination part as an energy saving grade.

  The target performance setting unit 41 sets a target heat insulation performance for the house X based on an input operation from the branch terminal 12 side. Specifically, the target performance setting unit 41 sets the target heat insulation performance as a target energy saving measure class. This setting is performed, for example, by a sales staff at a branch of a housing sales company asking a customer about the energy saving grade required for the house X and inputting the energy saving grade into the branch terminal 12 (operation unit 18).

  The excess / deficiency determination unit 42 is the target heat insulation performance set by the target performance setting unit 41 so that the heat insulation performance of the house X designed by the first design unit 22, that is, the heat insulation performance calculated by the heat insulation performance calculation unit 30 is set. On the other hand, it is judged whether it is insufficient or excessive. Specifically, the excess / deficiency determination unit 42 determines whether the energy saving grade determined by the energy saving grade determination unit 38 is below or above the target energy saving grade set by the target performance setting unit 41. judge. Thereby, the heat insulation performance of the house X designed by the first design unit 22 is evaluated.

  The above is the flow of the heat insulation performance evaluation process by the heat insulation performance evaluation unit 23. When the evaluation unit 23 (specifically, the excess / deficiency determination unit 42) evaluates that the heat insulation performance of the house X designed by the first design unit 22 is insufficient with respect to the target heat insulation performance. Secondary design by the second design unit 24 is performed. Hereinafter, the secondary design process will be described with reference to FIG. FIG. 4 is a functional block showing the secondary design process.

  As shown in FIG. 4, the priority change condition setting unit 45 changes the design of the outer skin portion M of the house X designed by the first design unit 22 by the second design unit 24 based on the input operation from the branch terminal 12. Priority change conditions regarding what changes should be prioritized are set. In the priority change condition setting unit 45, when making a design change for the skin part M of the house X, the design change regarding the predetermined skin part M (for example, the roof M1) is given priority, or the predetermined skin part M (for example, the external wall M2) is given. It is possible to set conditions such as making a design change with priority on other than. In the present embodiment, the customer has a desire not to install a shutter for the window opening M3a of the house X. Therefore, as a priority change condition, a design change other than the installation of the shutter to the window opening M3a is required. A priority change condition is set so as to prioritize.

  The change plan creation unit 46 creates a plurality of specification change plans for the skin portion M of the house X designed by the first design unit 22 based on the determination result by the excess / deficiency determination unit 42. The change plan creation unit 46 creates one or a plurality of specification change plans for each outer skin part M. The plurality of specification change proposals created by the change proposal creation unit 46 include those with different heat insulation performance, those with different appearance designs, and those with different floor plans. It can be presented to customers.

  More specifically, regarding the creation of the specification change plan by the change plan creation unit 46, the change plan database 47 stores a plurality of specification change plans for each outer skin region M in advance. The change plan creation unit 46 creates a specification change plan by extracting a plurality of specification change plans corresponding to the determination result of the excess / deficiency determination unit 42 from the database 47. For example, the excess / deficiency determination unit 42 determines that the energy saving grade determined by the energy saving grade determination unit 38 is insufficient (below) the target energy saving grade set by the target performance setting unit 41. In the case of a change, a specification change plan (hereinafter referred to as a high heat insulation change plan) that improves the heat insulation performance of the skin portion M is extracted from the change plan database 47. In addition, when it is determined that the energy saving grade determined by the energy saving grade determining unit 38 is excessive (exceeds) with respect to the target energy saving grade, the insulation performance of the outer skin portion M is determined from the change plan database 47. Extract specification changes to be reduced (hereinafter referred to as low heat insulation change plans). In the present embodiment, as described above, the excess / deficiency determination unit 42 evaluates that the energy saving grade of the house X designed by the first design unit 22 is insufficient with respect to the target energy saving grade. Therefore, the change plan creation unit 46 creates a high heat insulation change plan as a specification change plan. If the energy-saving grade of the house X determined by the energy-saving class determining unit 38 is the same as the target energy-saving class as a result of the determination by the excess / deficiency determining unit 42, the design result is output to a printer or the like, and then this house The design evaluation process ends.

  Further, the change plan creation unit 46 creates a specification change plan according to the priority change condition set by the priority change condition setting unit 45. For example, when the priority change condition is set so as to preferentially change the design other than the predetermined design change, the change plan creation unit 46 changes the predetermined design change to the predetermined design change. The corresponding specification change proposal is not created, and other specification change proposals are created. In addition, when a condition setting for giving priority to a predetermined design change is made as a priority change condition, the change proposal creating unit 46 creates a specification corresponding to the priority design change when creating the specification change proposal. Prioritize proposed changes. In the present embodiment, as the priority change condition, the condition setting that the design change other than the shutter installation to the window opening M3a is preferentially performed is performed. Therefore, the change proposal creating unit 46 creates the specification change proposal. The specification change proposal regarding the installation of the shutter is not created, and other specification change proposals are created with priority.

  The change plan display unit 48 causes the display unit 19 of the branch terminal 12 to display the specification change plan for the outer skin region M created by the change plan creation unit 46. Specifically, the change plan display unit 48 transmits the created specification change plan of the skin portion M to the branch terminal 12. When the specification change plan is received at the branch terminal 12 side, the change plan display unit 48 causes the display unit 19 to display the specification change plan. The change plan creation unit 46 and the change plan display unit 48 constitute change plan creation means.

  The change plan display unit 48 causes the display unit 19 to simultaneously display a plurality of specification change plans related to the skin region M created by the change plan creation unit 46. Further, the change plan display unit 48 causes the display unit 19 to display one or a plurality of specification change plans for each outer skin region M. In the present embodiment, since the high heat insulation change plan is created as the specification change proposal by the change plan creation unit 46, the high heat insulation change plan is displayed on the display unit 19. Here, the display content of the specification change plan (high heat insulation change plan) displayed by the change plan display part 48 is demonstrated based on FIG. In addition, FIG. 9 is a figure which shows the display screen (change plan display screen) which displayed the specification change plan of each outer skin site | part M in the table | surface format.

  As shown in FIG. 9, for example, a plurality of specification change plans (specifically, high heat insulation change plans) are displayed on the window X M3a of the house X on the change plan display screen. Specifically, the specification change proposal regarding each window opening M3a provided in each direction of the house X is displayed, and each of these specification change proposals is the current specification (that is, by the first design unit 22). It is shown in contrast with the specifications at the time of primary design. Here, among the plurality of window openings M3a, for example, a plurality (specifically four) specification change proposals are displayed for the window openings M3a provided in the living room on the south side of the first floor. Specifically, as a plurality of specification change proposals, the specification change proposals A (1800 × 1500 mm) and B (1800 × 1200 mm) and sashes that are smaller than the current size (1800 × 1800 mm) in terms of the size of the window opening, ), A specification change plan C (insulation sash) having a higher heat insulation property, and a specification change plan D in which a heel (corresponding to an external accessory) is newly added around the window opening. For the dirt floor M5, specification change proposals E (4000 × 4000 mm) and F (2500 × 4000 mm) in which the size of the floor surface is smaller than the current size (5000 × 4000 mm) are displayed.

  Here, a plurality of specification change proposals displayed on the change proposal display screen will be further described. The plurality of specification change proposals include a plurality of change proposals having different appearance designs. For example, the specification changes A and D regarding the window opening M3a have different appearance designs depending on the presence or absence of wrinkles. In addition, the plurality of specification change proposals include a plurality of change proposals having different floor plans. For example, the specification change proposals E and F related to the dirt floor M5 have different floor areas of the dirt floor M5, and therefore different floor plans around the dirt floor M5 of the first floor portion. Further, the plurality of specification change proposals include a plurality of change proposals having different heat insulation performance. For example, the specification change proposals A and B related to the window opening M3a have different amounts of heat loss through the window opening M3a because the sizes of the window openings are different.

  In addition, on the proposed change display screen, when the specification change plan displayed on the same screen is adopted, the amount of change related to how much the heat loss coefficient Q and the summer solar radiation acquisition coefficient μ change with respect to the current state is changed for each specification. Displayed together with each plan. For example, among the plurality of specification change plans A to D related to the window opening M3a of the living room on the south side of the first floor, when the specification change plan A in which the size of the window opening is 1800 × 1500 mm is adopted, the Q value is 0. .01, μ value is reduced by 0.001. In this case, it is useful when selecting a specification change plan because it is possible to know how much the heat insulation performance varies (decreases in FIG. 9) when any specification change plan is adopted for each skin region M.

  In addition, the change proposal display screen is provided with a check box (change proposal selection field) as a selection receiving unit for each specification change proposal of each skin region M. By checking the check box by the operation of the operation unit 18, it is possible to select a specification change plan desired by the customer for each skin region M. In the present embodiment, for example, the specification change plan A is selected with the window opening size of 1800 × 1500 mm for the window opening M3a of the living room on the south side of the first floor, and the floor size is set to 2500 × 4000 mm for the dirt floor M5. A specification change plan F having a size of is selected. Then, after the check box is checked, when the “decision” button 65 is clicked with the mouse, the selected specification change plan is confirmed, and the confirmed specification change plan (selection change plan information) is transmitted to the control unit. 17 to the management server 11 side.

  Returning to the description of FIG. 4, the selection change plan acquisition unit 49 operates the operation unit 18 among the plurality of specification change plans for the skin portion M displayed on the display unit 19 of the branch terminal 12 by the change plan display unit 48. The specification change proposal selected by is acquired. The selection change proposal acquisition unit 49 acquires the selected specification change proposal based on the selection change proposal information transmitted from the branch terminal 12. In the present embodiment, the selection change plan acquisition unit 49 acquires a specification change plan A or the like that sets the window opening to a size of 1800 × 1500 mm for the window opening M3a of the living room on the first floor south side.

  In the same type design unit 51 and the different type design unit 52, the design change of the house X designed by the first design unit 22 based on the specification change plan (high heat insulation change plan) acquired by the selection change plan acquisition unit 49. I do. In the present embodiment, different design changes (secondary design) are performed on the house X primarily designed by the first design unit 22 by the design units 51 and 52.

  The same type design unit 51 changes the design to a house X of the same type as the house X designed by the first design unit 22. In the present embodiment, since the house X primarily designed by the first design unit 22 is a unit-type house composed of a unit method, the design is changed with the unit-type house.

  The atypical design unit 52 changes the design to a home X of a different type from the home X that is primarily designed by the first design unit 22. In the present embodiment, the design change is performed from the unit-designed house X that is primarily designed to the steel-framed house X that includes the steel frame assembling method. The design change by the atypical design unit 52 is, for example, based on the house X (that is, the unit type house X) that has undergone the design change (secondary design) after the design change by the same type design unit 51 is performed. Done. Therefore, the unit-type house X designed by the same type design unit 51 and the steel frame type house X designed by the atypical design unit 52 have substantially the same heat insulation performance, and the appearance design. There is no big difference in the floor plan and layout.

  In the house display unit 25 described above, each type of house X whose design has been changed by the same type design unit 51 and the different type design unit 52 is displayed on the display unit 19. FIG. 10 shows a display screen (house display screen) on which each house X whose design has been changed by each design unit 51 and 52 is displayed. Hereinafter, based on this FIG. 10, the house display screen displayed by the house display part 25 is demonstrated. In FIG. 10, various symbols are shown, but these symbols are given for convenience of explanation, and are not displayed on the actual house display screen.

  As shown in FIG. 10, the house display screen includes a house X that has been redesigned by the same-type design unit 51 (hereinafter, referred to as the same-type house X1) and a house X that has been redesigned by the atypical design unit 52 (hereinafter, referred to as “model X”) , Referred to as an atypical house X2). Further, on the house display screen, in addition to the houses X1 and X2 after the design change, the house X before the design change, that is, the house X primarily designed by the first design unit 22 (hereinafter referred to as the house X0 before the change). ) Is also displayed. Each of these houses X0 to X2 is displayed as a two-dimensional image. Specifically, each of the houses X0 to X2 is a plan view showing a floor plan of the first floor, and an elevation view of the house X viewed from the south side. It is shown. It is not always necessary to display the houses X0 to X2 in this manner. For example, the houses X0 to X2 are displayed as a three-dimensional image, or the vertical and horizontal sectional views of the houses X0 to X2 are displayed. It may be arbitrary, such as showing.

  In the same type house X1 shown on the house display screen, for example, the window opening M3a of the living room L on the south side of the first floor is smaller than the house X0 before change (the elevations of the houses X0 and X1 in FIG. 10). (See figure). Specifically, in the same type house X1, the window opening M3a is a highly insulated change plan A selected on the change plan display screen (see FIG. 9) (the size of the window opening is reduced to 1800 × 1500 mm). It has been replaced with that of the proposed change. In this case, it can be confirmed how the external appearance of the south side of the house X changes with the design change. Further, in the same type house X1, the floor area of the dirt floor M5 (between front doors) is smaller than that of the house X0 before change (see the plan view of the houses X0 and X1 in FIG. 10). Specifically, the floor M5 is replaced with the high insulation change plan F (2500 × 4000 mm) selected on the change plan display screen (see FIG. 9) for the pre-change house X0. In this case, it can be confirmed how the floor plan around the earth floor M5 in the house X1 floor portion changes with the design change.

  Moreover, since the design change about the window opening M3a of the living room L and the floor M5 is the same as that of the same-type house X1, the atypical house X2 has an appearance on the south floor of the first floor and the pre-change house X0. The floor plan around the floor M5 on the first floor is almost the same as that of the same type house X1. However, the atypical house X2 has a roof M1 having a different shape from that of the same-type house X1, and therefore the appearance around the roof is different from that of the same-type house X1 (the elevations of the houses X1 and X2 in FIG. 10). (See figure). In this case, it is possible to present to the customer a type of house different from the one that the customer originally assumed.

  As described above, according to the system 10, the design of the outer skin part M is changed in order to improve the heat insulation performance of the house X that is primarily designed according to the customer's favorite appearance design and floor plan. You can visually check how the appearance design and floor plan change.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  A customer request data acquisition unit 21 that acquires customer request data including at least one of appearance design and floor plan regarding the design of the house X; a first design unit 22 that designs the house X based on the acquired customer request data; About the heat insulation performance evaluation part 23 which evaluates heat insulation performance about the house X designed by the 1st design part 22, and the outer skin part M of the house X designed by the 1st design part 22 based on the evaluation result by the heat insulation performance evaluation part 23 It was set as the structure provided with the 2nd design part 24 to which a design change is carried out, and the house display part 25 which displays on the display part 19 the house X which was changed by the 2nd design part 24. In this case, at the time of designing the house X, first, the primary design of the house X is performed by giving priority to the customer request data regarding the appearance design and the floor plan. Thereby, the house X corresponding to the customer's favorite appearance design and floor plan is designed. In addition, the heat insulation performance is evaluated for the primary designed house X, and the design change is performed on the outer skin portion M of the primary designed house X based on the evaluation result (secondary design). And since the house X which has been redesigned is displayed on the display unit 19, it is possible to present to the customer an alternative house plan that satisfies the heat insulation performance while being based on the house plan assumed from the beginning. Thereby, the requirements regarding the heat insulation performance can be satisfied without significantly deviating from the external appearance design and floor plan that the customer originally wanted.

  In addition, even if the heat insulation performance of the primary designed house X does not meet the customer's requirements, the design change is performed based on the primary designed house X, so that the design change from the beginning is not forced, Design changes can be minimized.

  The thermal insulation performance evaluation unit 23 includes an excess / deficiency determination unit 42 that determines whether the thermal insulation performance of the house X designed by the first design unit 22 is insufficient or excessive with respect to a preset target thermal insulation performance. Based on the determination result of the excess / deficiency determination unit 42, the design change of the outer skin part M of the house X designed by the first design unit 22 is performed by the unit 24. In this case, the primary design is based on whether the thermal insulation performance of the house X, which is primarily designed according to the customer's preferred appearance design and layout, is insufficient or excessive with respect to the target thermal insulation performance requested by the customer. The design change of the house X is performed. Therefore, when the heat insulation performance of the primary designed house X is insufficient with respect to the target heat insulation performance, the target heat insulation performance can be satisfied by changing the design to improve the heat insulation performance, or the primary designed house. If the heat insulation performance of the product is excessive with respect to the target heat insulation performance, it is possible to reduce the housing manufacturing cost within the range that satisfies the target heat insulation performance by changing the design to lower the heat insulation performance . Thereby, it becomes possible to present a housing plan with a higher degree of satisfaction for the customer while satisfying the thermal insulation performance required by the customer.

  Based on the determination result by the heat insulation performance evaluation unit 23 (specifically, the determination result by the excess / deficiency determination unit 42), the second design unit 24 has the skin X of the house X designed by the first design unit 22. A change plan creation unit 46 that creates a specification change plan and a change plan display unit 48 that displays the created specification change plan on the display unit 19 are provided. And based on the specification change proposal of the outer skin part M displayed on the display part 19, the design change of the house X designed by the 1st design part 22 was performed. In this case, a specification change plan for the outer skin portion M of the house X is created based on the heat insulation performance of the house that is primarily designed according to the customer's preferred appearance design and floor plan. This specification change plan is displayed on the display unit 19, and the customer can determine a desired change plan while referring to the specification change plan for the displayed skin region M. And the design change of the outer skin part M is performed about the house X designed primarily based on the determined change plan of liking. In this case, while satisfying the thermal insulation performance required by the customer, it is possible to incorporate the customer's request regarding the design change, and it is possible to present a housing plan that further meets the customer's needs.

  Specifically, the change plan creation unit 46 creates a plurality of specification change plans for the outer skin portion M of the house X designed by the first design unit 22, and the change plan display unit 48 displays the plurality of specification change plans. Is displayed on the display unit 19. And the design change of the house X designed by the 1st design part 22 was performed based on the specification change proposal selected by operation of the operation part 18 among the displayed several specification change proposals.

  More specifically, the change plan display unit 48 causes the display unit 19 to simultaneously display a plurality of specification change plans related to the skin region M. In this case, since a plurality of specification change proposals are presented together at one time, it becomes possible to quickly find a change proposal that is preferable to the customer, and it is possible to reduce repeated design changes.

  In addition, as a plurality of specification change proposals displayed on the display unit 19, a plurality of change proposals having different appearance designs, a plurality of change proposals having different floor plans, and a plurality of change proposals having different heat insulation performances are included. In this case, since it is possible to present a variety of specification change proposals regarding appearance design, floor plan, and heat insulation performance, it is possible to increase the possibility of providing the customer with a housing plan desired by the customer. In addition, as a plurality of specification change proposals displayed on the display unit 19, any one or two of a plurality of change proposals having different appearance designs, a plurality of change proposals having different floor plans, and a plurality of change proposals having different heat insulation performances are used. May be included.

  Since the second design unit 24 includes a priority change condition setting unit 45 for setting a priority change condition regarding which change is to be prioritized at the time of a design change, a predetermined skin portion M (for example, the roof M1) is given priority. Thus, it is possible to set conditions such as changing the design or preferentially changing the design except for a predetermined skin portion M (for example, the outer wall M2). Thereby, since a customer's needs can be considered at the time of a design change, it becomes possible to show the customer the house according to a customer's needs further.

  The first design unit 22 designs the house X based on the type selection data included in the customer request data acquired by the customer request data acquisition unit 21 (in this embodiment, data indicating a unit type house). The second design unit 24 includes the same type design unit 51 that changes the design to the same type of house X as the house X designed by the first design unit 22, and the house X designed by the first design unit 22. A different-type design unit 52 for changing the design of a different type of house X is provided. In the house display unit 25, each type of house X whose design has been changed by the same type design unit 51 and the variant type design unit 52 is displayed on the display unit 19. In this case, in addition to the type of house (unit type house) assumed by the customer from the beginning, a different type of house (steel frame type house) can be presented to the customer. Thereby, the variation of the housing plan which can be shown with respect to a customer can be increased, and possibility that the housing plan which a customer desires can be provided to a customer can be improved.

  The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  (1) As shown in FIG. 11, a housing cost evaluation unit 55 that evaluates the manufacturing cost of the house X designed by the first design unit 22 is further provided. In the second design unit 24, the evaluation result by the heat insulation performance evaluation unit 23 In addition, based on the evaluation result by the housing cost evaluation unit 55, the design change may be performed on the outer skin portion M of the house X designed by the first design unit 22. In this case, the evaluation of the manufacturing cost is performed together with the evaluation of the heat insulation performance of the house X that is primarily designed according to the customer's favorite appearance design and layout. Then, based on the evaluation result of the manufacturing cost in addition to the evaluation result of the heat insulation performance, the design change is performed on the outer skin portion M of the house X that is primarily designed. As a result, an alternative housing plan that satisfies the cost in addition to the heat insulation performance can be presented to the customer while being based on the housing plan assumed from the beginning. Therefore, it is possible to satisfy not only the requirements regarding the heat insulation performance but also the requirements regarding the manufacturing cost without greatly deviating from the external appearance design and floor plan that the customer originally wanted.

  Specifically, the housing cost evaluation unit 55 includes a target cost determination unit that determines whether or not the manufacturing cost of the house X designed by the first design unit 22 exceeds a preset target manufacturing cost. In the 2 design part 24, it is possible to change a design about the outer skin part M of the house X designed by the 1st design part 22 based on the determination result by the target cost determination part. In this case, when the manufacturing cost of the primary designed house X exceeds the target cost, the design is changed to reduce the manufacturing cost, or the manufacturing cost of the primary designed house X is lower than the target manufacturing cost. In this case, the design can be changed so as to enhance the heat insulation performance within a range where the manufacturing cost does not exceed the target cost. As a result, it is possible to present a housing plan with higher satisfaction for the customer while satisfying the manufacturing cost required by the customer.

  Further, in the second design unit 24 shown in FIG. 4, the change plan creation unit 46 changes the specification of the outer skin portion M of the house X designed by the first design unit 22 based on the determination result by the target cost determination unit. A plan may be created, and the change plan display unit 48 may display the created specification change plan on the display unit 19. In this case, the customer can determine the change plan of preference while referring to the specification change plan of the outer skin part M created based on the evaluation result of the manufacturing cost of the primary designed house X. Based on this, a design change is performed for the house X that is primarily designed. In this case, while satisfying the manufacturing cost required by the customer, it is possible to incorporate other customer requests related to the design change, and it is possible to present a housing plan that further meets the customer needs.

  (2) In the above embodiment, the heat insulation performance of the house X designed by the first design unit 22 is set to the target heat insulation performance set in advance (specifically, the heat insulation performance set by the target performance setting unit 41). On the other hand, it is determined whether it is deficient or excessive, and the design change is performed on the outer skin portion M of the house X that is primarily designed based on the determination result, but this may be changed. For example, whether the heat insulation performance of the house X designed by the first design unit 22 is insufficient with respect to the target heat insulation performance or whether the heat insulation performance is excessive with respect to the target heat insulation performance. It is possible to determine only whether or not and change the design of the outer skin portion M of the house X that is primarily designed based on the determination result.

  In addition, the outer skin portion M of the primary designed house X may be redesigned so as to increase the thermal insulation performance by a predetermined height with respect to the thermal insulation performance of the house X primarily designed by the first design unit 22. For example, it is conceivable to change the design so that the energy saving measure class is raised by a predetermined series (for example, 2) with respect to the energy saving measure class of the house X that is primarily designed.

  (3) You may display the specification change plan displayed on the display part 19 by the change plan display part 48 as an image which shows the content of this design change. For example, in the case of a specification change plan in which a heel is newly installed in the window opening M3a, an image in which a heel is attached above the window opening M3a may be displayed as a specification change plan. In this case, since it is easy to grasp the external appearance image regarding each specification change proposal, it can be expected that the customer accurately selects the desired specification change proposal, and as a result, repeated design changes can be suppressed.

  In this case, the change plan display unit 48 displays the house X, which is primarily designed by the first design unit 22, together with the plurality of specification change plans composed of the above-described images on the display unit 19. Based on a specification change plan selected by an operation of the operation unit 18 (for example, a click operation or a drag operation with a mouse) among a plurality of specification change plans displayed on the unit 19, the skin region M of the house X that is primarily designed The design change may be performed while the house X is displayed on the display unit 19 (secondary design). In this case, when the customer selects a preferred specification change plan, the contents of the design change are immediately reflected in the house X displayed on the display unit 19, so the customer can request various specifications change plans while trying. This is convenient when finding out the house X. In this configuration, the secondary design of the house X (corresponding to the secondary design by the second design unit 24) and the display on the display unit 19 of the secondary designed house X (corresponding to the display process by the housing display unit 25) ) Is done at once.

  Furthermore, in the above configuration, when the design change of the outer skin portion M of the house X that is primarily designed is performed while the house X is displayed on the display unit 19, the heat insulation performance of the house X that has been redesigned is changed. The heat insulation performance may be calculated and displayed on the display screen on which the house X is displayed. Then, when the customer chooses a preferred specification change plan, the heat insulation performance of the house X is displayed together with the redesigned house X. When finding out, not only the appearance design and floor plan, but also the heat insulation performance can be referred to, and the convenience can be further enhanced.

  (4) The priority change condition that can be set by the priority change condition setting unit 45 is not limited to the above-described embodiment, and may be as follows. For example, it is possible to set a condition that priority is given to a design change with higher heat insulation performance, or to set a condition to give priority to a design change that lowers the manufacturing cost of a house. Thereby, the housing plan according to needs can be shown with respect to the customer who attaches importance to heat insulation performance or housing cost.

  Moreover, you may set the priority regarding a design change as priority change conditions. For example, if priority is given to heat insulation performance over housing manufacturing costs, it may be possible to set conditions to prioritize design changes that increase heat insulation performance over design changes that lower housing production costs. .

  (5) In the above embodiment, the customer request data including both the exterior design and the floor plan of the house X is acquired by the customer request data acquisition unit 21, but the customer including either the exterior design or the floor plan of the house X The request data may be acquired by the acquisition unit 21. In this case, the housing is primarily designed according to either the customer's preferred appearance design or floor plan.

  (6) The heat loss coefficient Q of the house X depends on the amount of heat loss due to ventilation (0.35 nB) according to the above-described equation (1) or (2). For this reason, the heat loss coefficient Q can be reduced by reducing the apparent ventilation frequency n of the house X, and thus the energy saving measure class can be increased (for example, if the construction area is IV, The energy saving grade is 2 when the Q value is 5.2, whereas the energy saving grade is 3 when the Q value is 4.2). Therefore, as a specification change plan created by the change plan creation unit 46, a change plan for reducing the apparent ventilation frequency n of the house X may be included. For example, when ventilation control is performed by installing a ventilation device with a heat exchange function in house X, it is possible to ventilate while maintaining the amount of heat, so heat loss due to ventilation can be reduced. Apparent ventilation frequency n can be reduced. Therefore, it is conceivable to include a change plan for installing a ventilator having a heat exchange function in the house X as a specification change plan. In this case, since the design can be changed without changing the appearance design of the house X, it is possible to present to the customer a house plan composed of the customer's favorite appearance design.

  (7) In the above embodiment, the change plan display unit 48 displays a plurality of changed specification plans created by the change plan creation unit 46 on the display unit 19 at the same time. You may make it display a proposal for a change on the display part 19 sequentially. In the above embodiment, a plurality of specification change plans are created by the change plan creation unit 46, but only one specification change plan may be created. In this case, only the one specification change plan is displayed on the display unit 19 in the change plan display unit 48. For example, the operation unit 19 is used to determine whether or not to determine the displayed change plan. .

  (8) In the above embodiment, the case where the house design system 10 is used when dealing with a customer visiting a branch of a house sales company has been described as an example. You may use at the time of reception. In this case, even if the housing exhibition hall does not display a house with the customer's favorite appearance design or a house that satisfies the thermal insulation performance required by the customer, The customer can present a housing plan with sufficient insulation performance.

  Moreover, you may utilize this system 10 when renovating the existing house. In this case, a customer request including at least one of an exterior design and a floor plan is acquired for the renovated house, and the house is primarily designed based on the acquired customer request to evaluate the heat insulation performance. And the design change of the house designed primarily based on the evaluation result of heat insulation performance is performed. As a result, it is possible to present a home renovation plan that satisfies the customer needs related to the exterior design and layout and satisfies the heat insulation performance.

  DESCRIPTION OF SYMBOLS 10 ... Housing design system, 11 ... Management server, 12 ... Branch terminal, 19 ... Display part as display display, 21 ... Customer request data acquisition part as customer request acquisition means, 22 ... 1st design as 1st design means , 23 ... heat insulation performance evaluation part as heat insulation performance evaluation means, 24 ... second design part as second design means, 25 ... housing display part as house display means, 42 ... excess / deficiency determination as excess / deficiency determination means 45, a priority change condition setting unit as a priority change condition setting unit, 51 ... a same type design unit as a same type design unit, 52 ... an atypical design unit as a different type design unit, 55 ... as a housing cost evaluation unit Housing cost evaluation department.

Claims (6)

Customer request acquisition means for acquiring customer request data including exterior design and / or floor plan for housing design;
First design means for designing a house based on the customer request data;
Heat insulation performance evaluation means for evaluating heat insulation performance of the house designed by the first design means;
Based on the evaluation result by the heat insulation performance evaluation means, a second design means for changing the design of a heat insulation function part predetermined as a part related to heat insulation performance in the house designed by the first design means;
Housing display means for displaying the house whose design has been changed by the second design means on a display;
Housing design system with The thermal insulation performance evaluation unit includes an excess / deficiency determination unit that determines whether the thermal insulation performance of the house designed by the first design unit is insufficient or excessive with respect to a preset target thermal insulation performance,
2. The housing design system according to claim 1, wherein the second design unit performs a design change on a heat insulation functional part of the house designed by the first design unit based on a determination result by the excess / deficiency determination unit.   The second design unit creates a specification change plan for the heat insulation functional part of the house designed by the first design unit based on the evaluation result by the heat insulation performance evaluation unit, and the specification change plan is displayed on the display display. 3. The design change of the house designed by the first design means is performed based on a specification change plan of the heat insulation functional part displayed on the display display. Housing design system.   The housing design system according to any one of claims 1 to 3, wherein the second design unit includes a priority change condition setting unit configured to set a priority change condition regarding which change should be given priority when the design is changed. . The customer request data acquired by the customer request acquisition means includes model selection data selected from a plurality of house models having different construction methods,
The first design means designs a house based on customer request data including the type selection data,
The second design means includes the same type design means for changing the design to a house of the same type as the house designed by the first design means, and the type of house different from the house designed by the first design means. With atypical design means for making design changes,
5. The house design system according to claim 1, wherein the house display unit displays each type of house whose design has been changed by the same type design unit and the different type design unit on the display. A housing cost evaluation means for evaluating a manufacturing cost of the house designed by the first design means;
The said 2nd design means performs a design change about the heat insulation functional part of the house designed by the said 1st design means based on the evaluation result by the said house cost evaluation means in addition to the evaluation result by the said heat insulation performance evaluation means. The housing design system according to any one of 1 to 5.

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