JP2006172926A - Daylight structure for house - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To take sufficient natural light in a room while blocking direct sunlight. <P>SOLUTION: In this daylight structure 10 for a house, a first window 1 is provided in an outer wall 8, a second window 2 is provided above the first window, and a daylighting adjustment plate 3 is arranged between the first window 1 and the second window to be horizontally hung out to the outdoor side. The daylight adjustment plate 3 comprises a base sheet 14 and a light reflexing scatter plate 4 stuck on the upper surface of the base sheet. By this configuration, incident light entering the daylight adjustment plate 3 can be diffusely scattered by the upper surface. The second window 2 is provided with a horizontal louver 5 on the outdoor side as a shading adjustment member. By this configuration, direct sunlight incident on the second window 2 is shielded. and scattered light from the daylighting adjustment plate 3 can be transmitted. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a daylighting structure for a house that takes in sufficient natural light while blocking direct sunlight into the room.

  Daylight that falls from the sun to the surface of the earth, that is, natural light, includes direct sunlight that passes through the atmosphere layer and reaches the ground directly, skylight that is scattered by dust and water vapor in the atmosphere, and direct sunlight and skylight. Needless to say, it is important to sufficiently incorporate such natural light into the room in order to form a comfortable living space.

  Of the natural light described above, direct sunlight causes the temperature of the room to rise, especially in summer, so it is necessary to block the incidence of direct sunlight into the room in order to create a comfortable indoor environment.

  For this reason, a method of providing a ridge on the top of the window to block direct sunlight has been generally used, but it is not possible to secure sufficient daylight indoors by simply blocking direct sunlight. A method has been proposed to secure indoor lighting by providing a shelf in a window, blocking direct sunlight from the sun with the light shelf, reflecting natural light on the top surface, and reflecting the reflected light again on the indoor ceiling. ing.

JP 2000-285710 A JP2000-228107A

  However, when the applicant conducted a verification test using a light shelf, the problem was that light could not reach the interior of the room sufficiently by simply reflecting natural light on the top surface of the light shelf. I found out.

  In particular, when natural light is almost direct sunlight, such as in fine weather, light does not reach the interior of the room sufficiently, and in summer, the room temperature at the window rises and there is a concern about cooling load.

  The present invention has been made in consideration of the above-described circumstances, and an object of the present invention is to provide a daylighting structure for a house that can block direct sunlight and take in sufficient natural light indoors.

  In order to achieve the above object, the daylighting structure for a house according to the present invention provides a first window on the outer wall and a second window above the first window, as described in claim 1, A lighting structure for a house in which a lighting adjustment plate is installed between the first window and the second window so as to project to the outside, so that incident light can be irregularly reflected on the upper surface of the lighting adjustment plate. The lighting adjustment plate is configured, and the second window is provided with a light-blocking adjustment member capable of blocking direct sunlight and transmitting scattered light from the lighting adjustment plate.

  Further, the daylighting structure for a house according to the present invention has a first window on the outer wall and a second window above the first window, as described in claim 2, A daylighting structure of a house in which a daylighting adjustment plate is installed so as to project to the outdoor side between the second window and the daylighting adjustment plate so that incident light can be irregularly reflected on the upper surface of the daylighting adjustment plate. And the second window is made of an optical diffusion transmission material.

  In the housing lighting structure according to the present invention, the ceiling of the housing is a sloped ceiling so that the ceiling height decreases from the outdoor side toward the indoor side.

  In view of the above-mentioned problems, the present applicant has conducted intensive research without being constrained by the conventional idea of specularly reflecting natural light. As a result, the natural light can be guided indoors by irregularly reflecting natural light. Obtained knowledge.

  That is, in the daylighting structure for a house according to the first invention, a first window is provided on the outer wall, a second window is provided above the first window, and the first window and the second window are provided. A daylighting adjustment plate is installed between the window and the outside.

  Here, the lighting adjustment plate is configured such that incident light can be diffusely reflected on the upper surface thereof, and the overhanging length of the lighting adjustment plate and the opening height of the first window are poured from the sun. It is desirable to set in consideration of changes in solar altitude due to season and time so that direct sunlight does not enter the room directly from the first window.

  That is, the lighting adjustment plate and the first window are set to have a protruding length and an opening height dimension so that direct sunlight in summer and direct sunlight in winter are shielded by the lighting adjustment plate and do not enter the room. .

  If it does in this way, since the daylighting adjustment board will have a function of a cocoon, and the direct sunlight which pours into the 1st window from the sun is shielded by the daylighting adjustment board, the direct sunlight does not depend on the season. It does not enter the room through the window.

  Of natural light, the sky light has an incident angle with respect to the first window limited by surrounding buildings, but it is originally scattered light and is not shielded by the lighting adjustment plate, but scattered light from the first window. Can be taken indoors.

  In the daylighting structure for a house according to the first aspect of the present invention, the second window is provided with a light shielding adjustment member capable of shielding direct sunlight and transmitting scattered light from the daylighting adjustment plate.

  Here, it is desirable that the second window has a wide opening height so that natural light diffusely reflected on the upper surface of the lighting adjustment plate is sufficiently incident on the room. For example, the lower end of the window frame is arranged at the lower end of the window adjustment plate. And the upper end may be installed on the lower surface of the indoor ceiling.

  In addition, the light shielding adjusting member is provided on the entire surface of the second window, and its mounting angle is set in consideration of the incident angle of direct sunlight.

  If it does in this way, the direct sunlight which shines directly on the 2nd window will be light-shielded by the light-shielding adjustment member provided in this 2nd window, and the natural light which shines on the lighting adjustment board will become direct sunlight. After being diffusely reflected on the upper surface of the daylighting adjustment plate, it is transmitted through the light shielding adjustment member and taken into the room through the second window.

  In other words, not only the direct sunlight with a constant incident angle but also the skylight whose incident angle is limited by surrounding buildings are diffusely reflected on the upper surface of the lighting adjustment plate, so that it does not depend on the incident angle on the upper surface of the lighting adjustment plate. Can be led indoors.

  Therefore, both natural light that enters the room through the second window becomes scattered light in both fine weather and cloudy weather, and the scattered light is incident on the ceiling at all angles and scattered indoors. It will be possible to guide to the back, and the illuminance in the room can be secured.

  In addition, as described above, even if the direct sunlight incident on the first window is blocked by the lighting adjustment plate, the direct sunlight is taken into the room from the second window as scattered light. Can be secured.

  In other words, the daylighting adjustment plate has both a haze function that blocks the incidence of direct sunlight into the room and a daylighting function that scatters natural light consisting of direct sunlight and skylight into the room as scattered light. It is possible to create a comfortable indoor environment even in cloudy weather.

  The light-shielding adjusting member may have any configuration as long as it can block the direct sunlight that is directly poured onto the second window and can transmit the scattered light from the daylighting adjusting plate. It is sufficient to be provided in. In such a case, the angle of the louver is set in consideration of the solar altitude, that is, the incident angle of direct sunlight on the second window.

  Further, if the ceiling described above is a gradient ceiling whose ceiling height decreases from the outdoor side toward the indoor side, the illuminance of the indoor space can be increased more effectively.

  This is because the incident angle of the scattered light taken into the indoor space through the second window with respect to the gradient ceiling is larger than the incident angle with respect to the horizontal ceiling having no gradient, and thereby the incident area of the scattered light with respect to the gradient ceiling. Is smaller than the incident area with respect to the horizontal ceiling. In other words, it seems that the amount of luminous flux incident per unit area is higher on the gradient ceiling than on the horizontal ceiling, and the illuminance is higher.

  In the present specification, the incident angle is defined not as an original engineering incident angle but as an incident angle of light with respect to the ceiling surface.

  In addition, if the ceiling is made of a color having a high light reflectivity, particularly white, the scattered light taken into the room and incident on the ceiling will be reflected more effectively into the indoor space. Illuminance can be increased.

  Furthermore, if the ceiling described above is configured to have fine irregularities on the ceiling surface, the scattered light taken into the room and incident on the ceiling will be diffusely reflected again on the ceiling surface, and more effectively on the entire room. Scattered light can be scattered.

  In the daylighting structure for a house according to the second invention, a first window is provided on the outer wall, a second window is provided above the first window, and the first window and the second window are provided. A daylighting adjustment plate is installed between the window and the outside.

  Here, similarly to the first invention, the lighting adjustment plate is configured such that incident light can be diffusely reflected on the upper surface thereof, and the overhanging length of the lighting adjustment plate and the opening height dimension of the first window are as follows. It is desirable to set in consideration of changes in solar altitude due to the season and time so that direct sunlight falling from the sun does not enter the room directly from the first window. Since the description about the setting of the overhanging length of the daylighting adjustment plate and the opening height dimension of the first window has already been described in the first invention, it will be omitted here.

  If it does in this way, like the 1st invention, since the lighting adjustment board will have a function of a ridge and the direct sunlight poured down to the 1st window from the sun is shielded by the lighting adjustment board, it does not depend on a season Direct sunlight does not enter the room through the first window.

  Of natural light, the sky light has an incident angle with respect to the first window limited by surrounding buildings, but it is originally scattered light and is not shielded by the lighting adjustment plate, but scattered light from the first window. Can be taken indoors.

  Further, in the daylighting structure for a house according to the second invention, the second window is made of an optical diffusion transmission material.

  Here, it is desirable that the second window has a wide opening height so that natural light diffusely reflected on the upper surface of the lighting adjustment plate is sufficiently incident on the room, as in the first invention. The lower end of the light source may be installed on the upper surface of the lighting adjustment plate, and the upper end may be installed on the lower surface of the indoor ceiling.

  In this way, the natural light falling on the second window is scattered by passing through the second window, whether it is direct sunlight or skylight, and the natural light falling on the lighting adjustment plate is Whether it is direct sunlight or skylight, the light is irregularly reflected on the upper surface of the lighting adjustment plate, and is then scattered again by passing through the second window and taken into the room.

  In other words, not only the direct sunlight with a constant incident angle but also the skylight whose incident angle is limited by the surrounding building is diffusely reflected on the upper surface of the lighting adjustment plate, so that it does not depend on the incident angle on the upper surface of the lighting adjustment plate. It can be guided indoors in the form.

  Therefore, all the natural light that enters the room through the second window becomes scattered light in both fine weather and cloudy weather, and the scattered light enters the ceiling at any angle and is scattered indoors. It is possible to guide to the back of the room, and it is possible to secure the illuminance in the room.

  In addition, even if the direct sunlight incident on the first window is blocked by the daylighting adjustment plate as described above, the direct sunlight is taken into the room as the scattered light from the second window to ensure the illuminance in the room. can do.

  In other words, the daylighting adjustment plate has both a haze function that blocks the incidence of direct sunlight into the room and a daylighting function that allows natural light consisting of direct sunlight and skylight to enter the room as scattered light. It is possible to create a comfortable indoor environment even in cloudy weather.

  As the optical diffuse transmission material, any material can be used as long as it can transmit and scatter natural light, and a material having excellent weather resistance may be appropriately selected. There is.

  Further, if the ceiling described above is a sloped ceiling whose ceiling height decreases from the outdoor side toward the indoor side, as in the first invention, the illuminance of the indoor space can be increased more effectively.

  This is because the incident angle of the scattered light taken into the indoor space through the second window with respect to the gradient ceiling is larger than the incident angle with respect to the horizontal ceiling having no gradient, and thereby the incident area of the scattered light with respect to the gradient ceiling. Is smaller than the incident area with respect to the horizontal ceiling. In other words, the amount of luminous flux incident per unit area seems to be higher on the sloped ceiling than on the horizontal ceiling, resulting in higher illuminance.

  In addition, if the ceiling is made of a color having a high light reflectivity, particularly white, the scattered light taken into the room and incident on the ceiling will be reflected more effectively into the indoor space. Illuminance can be increased.

  Furthermore, if the ceiling described above is configured to have fine irregularities on the ceiling surface, the scattered light taken into the room and incident on the ceiling will be diffusely reflected by the ceiling surface, and more effectively scattered throughout the room. The light can be scattered.

  Embodiments of a daylighting structure for a house according to the present invention will be described below with reference to the accompanying drawings. Note that components that are substantially the same as those of the prior art are assigned the same reference numerals, and descriptions thereof are omitted.

(First embodiment)

  FIG. 1 is a view showing a daylighting structure of a house according to the present embodiment, in which (a) is a cross-sectional view and (b) is a detailed cross-sectional view near the ceiling. Moreover, FIG. 2 is the side view which looked at the lighting structure of the house concerning this embodiment from the indoor side. As can be seen from these drawings, the residential daylighting structure 10 according to this embodiment has the first window 1 provided on the outer wall 8 and the second window 2 provided above the first window. A lighting adjustment plate 3 is installed between the first window 1 and the second window so as to project horizontally to the outdoor side.

  The window frame 11 of the first window 1 has its lower end installed on the floor 9, and the window frame 12 of the second window 2 has its upper end installed on the ceiling 6, The lower end of the window frame 12 is adjacent to the lighting adjustment plate 3.

  As can be clearly seen in FIG. 1, the ceiling 6 is composed of a gradient ceiling whose ceiling height decreases from the outdoor side toward the indoor side. In addition, it is desirable that the surface of the ceiling 6 be a color having a high light reflectance, particularly white, so that scattered light incident on the ceiling is more effectively reflected to the indoor space 7.

  The shape and mounting position of the daylighting adjusting plate 3 and the first window 1 are set so that direct sunlight does not enter the indoor space 7 from the first window 1.

  Specifically, the height dimension H of the opening of the first window 1 and the overhanging length L of the daylighting adjustment plate 3 are, for example, direct sunlight from the sun at the time of the south-south solar time in the winter solstice and the time of the south-south solar time in the summer solstice. Is blocked by the daylighting adjustment plate 3 so as not to enter the indoor space 7.

  In addition, the lighting adjustment plate 3 includes a base material 14 and an optical diffuse reflection material 4 attached to the upper surface of the base material. It can be diffusely reflected on the upper surface.

  The material of the optical diffuse reflection material 4 is arbitrary as long as it diffusely reflects incident light on its upper surface, and a material having appropriate strength, excellent weather resistance, and high diffuse reflectance may be selected as appropriate. . Specifically, it is desirable that the ratio of the light incident at 45 ° reflected in the normal direction is an index, and the index is preferably 70% or more. For example, an aluminum-based plate whose surface is roughened There is.

  The second window 2 is provided with a horizontal louver 5 as a light-shielding adjusting member on the entire outdoor side thereof, and the horizontal louver 5 is shielded from direct sunlight falling on the second window 2. And the attachment angle is set in consideration of the incident angle of the direct sunlight so that the scattered light from the lighting adjustment plate 3 can be transmitted.

  In the housing daylighting structure 10 according to this embodiment, the first window 1 is provided on the outer wall 8 and the second window 2 is provided above the first window. The lighting adjustment plate 3 is installed horizontally so as to project horizontally between the two windows and the lighting adjustment plate is attached to the base material 14 and the upper surface of the base material. It consists of

  For this reason, the daylighting adjustment plate 3 has a function of a saddle, and the direct sunlight falling on the first window 1 from the sun, that is, the direct sunlight falling on the daylighting adjustment plate 3 is blocked by the daylighting adjustment plate 3. The

  Of natural light, the sky light has an incident angle with respect to the first window 1 limited by surrounding buildings, but is originally scattered light and is not shielded by the daylighting adjustment plate 3. Therefore, the scattered light can be taken into the indoor space 7.

  Further, in the daylighting structure 10 in the house according to the present embodiment, the horizontal louver 5 as a light shielding adjusting member is installed on the outdoor side of the second window 2.

  Therefore, the direct sunlight out of the natural light falling on the second window 2 from the sun is shielded by the horizontal louver 5 attached to the second window 2 and the natural light falling on the lighting adjustment plate 3 is Whether it is direct sunlight or skylight, the light is irregularly reflected on the upper surface of the lighting adjustment plate 3, passes through the horizontal louver 5, and enters the indoor space 7 from the second window 2 at any angle.

  In other words, not only the direct sunlight with a constant incident angle but also the sky light whose incident angle is limited by the surrounding building is diffusely reflected on the upper surface of the lighting adjustment plate 3, so that the incident angle on the upper surface of the optical diffuse reflection material 4 is changed. It can be led to the indoor space 7 in an independent manner.

  Moreover, in the daylighting structure 10 for the house according to the present embodiment, the ceiling 6 is configured as a gradient ceiling whose ceiling height decreases from the outdoor side toward the indoor side.

  In this way, the illuminance of the ceiling 6 is higher than that of the horizontal ceiling 16 having no gradient, and the illuminance of the indoor space 7 can be increased more effectively.

As can be seen well in FIG. 1, the natural light A incident on the lighting adjustment plate 3 is irregularly reflected on the upper surface of the optical diffuse reflection material 4 and is scattered as light A ′ to the indoor space 7 through the second window 2. After being taken in, the light enters the ceiling 6. The incident angle θ ₁ of the scattered light A ′ with respect to the ceiling 6 is larger than the incident angle θ ₁ ′ with respect to the horizontal ceiling 16, thereby causing the scattered light A ′ to enter the ceiling 6. The incident area S ₁ is smaller than the incident area S ₁ ′ with respect to the horizontal ceiling 16. That is, it is considered that the amount of light flux incident per unit area is higher on the gradient ceiling 6 than on the horizontal ceiling 16 and the illuminance is higher.

  As described above, according to the daylighting structure 10 for a house according to the present embodiment, the first window 1 is provided on the outer wall 8 and the second window 2 is provided above the first window. A lighting adjustment plate 3 is installed between the first window 1 and the second window so as to project horizontally to the outdoor side, and the lighting adjustment plate is attached to the upper surface of the base material 14 and the base material. The light adjustment plate 3 has the function of a cocoon, and the direct sunlight that falls from the sun to the first window 1, that is, the light adjustment plate 3. The direct sunlight to be poured is blocked by the lighting adjustment plate 3.

  Therefore, the direct sunlight is not incident on the indoor space 7 from the first window 1 regardless of the season, and only scattered light can be taken into the indoor space 7 from the first window 1.

  Moreover, according to the lighting structure 10 in the house which concerns on this embodiment, since the horizontal louver 5 as a light-shielding adjustment member was installed in the outdoor side of the 2nd window 2, the natural light which falls on the 2nd window 2 is poured. Direct sunlight is shielded by a horizontal louver 5 attached to the second window 2, and natural light falling on the lighting adjustment plate 3 is reflected on the upper surface of the lighting adjustment plate 3 whether it is direct sunlight or skylight. The light is diffusely reflected, passes through the horizontal louver 5, and enters the indoor space 7 from the second window 2 at any angle.

  Therefore, both of the natural light incident on the indoor space 7 from the second window 2 becomes scattered light both in the fine weather and in the cloudy weather, and the scattered light is incident on the ceiling 6 at any angle and scattered in the indoor space 7. Therefore, natural light can be guided to the interior of the room.

  In addition, even if the direct sunlight incident on the first window 1 is blocked by the daylighting adjustment plate 3 as described above, the direct sunlight is taken into the indoor space 7 from the second window 2 as scattered light. Thus, the illuminance of the indoor space 7 can be ensured. In other words, the daylighting adjustment plate 3 simultaneously has a saddle function for shielding direct sunlight from entering the indoor space 7 and a daylighting function for allowing natural light composed of direct sunlight and skylight to enter the indoor space 7 as scattered light. Therefore, it is possible to create a comfortable indoor environment both in fine weather and in cloudy weather.

  Further, according to the daylighting structure 10 in the house according to the present embodiment, since the ceiling 6 is a sloped ceiling whose ceiling height decreases from the outdoor side toward the indoor side, the illuminance of the ceiling 6 is higher than that in the case of the horizontal ceiling 16. The illuminance of the indoor space 7 can be increased more effectively.

This is because the natural light A incident on the lighting adjustment plate 3 is irregularly reflected on the upper surface of the optical diffuse reflection material 4 and taken into the indoor space 7 through the second window 2 as the scattered light A ′, and then enters the ceiling 6. Although incident, the incident angle θ ₁ of the scattered light A ′ with respect to the ceiling 6 is larger than the incident angle θ ₁ ′ with respect to the horizontal ceiling 16, whereby the incident area S ₁ of the scattered light A ′ with respect to the ceiling 6 is equal to the horizontal ceiling. 16 is smaller than the incident area S ₁ ′. That is, it is considered that the amount of light flux incident per unit area is higher on the gradient ceiling 6 than on the horizontal ceiling 16 and the illuminance is higher.

  Here, since the illuminance measurement experiment was performed about the effect regarding the lighting structure 10 of the house which concerns on this embodiment, it shows below.

  First, an 8 tatami room model with a scale of 1/8 was created, and a measurement experiment was performed using this model in an artificial sky light laboratory.

  FIG. 3 is a model diagram of the house used in this experiment and a graph showing the experiment result. (A) is a model cross-sectional view of the daylighting structure 10 of the house according to this embodiment, and (b) is a horizontal view of the ceiling. The model sectional view of the daylighting structure of the house when it is a ceiling, (c) is a graph showing the experimental results.

Here, for a house model having a gradient ceiling, the interior depth w = 5460 mm, the outdoor side ceiling height h ₁ = 3000 mm, the indoor side ceiling height h ₂ = 2000 mm, and the house model having a horizontal ceiling, The indoor depth w was 5460 mm and the ceiling height h _{1 was} 3000 mm.

  The illuminance measurement was performed on each ceiling surface at distances from the window installation position of 1365 mm, 2730 mm, and 4095 mm.

  In the residential daylighting structure 10 according to the present embodiment, since the scattered light is taken into the indoor space 7, the experiment was performed with natural light incident from the windows of each residential model as 100% scattered light.

  FIG. 3 (c) shows the experimental results. In the figure, the horizontal axis represents the distance from the window installation position, the vertical axis represents the illuminance of the ceiling surface, and the illuminance of the gradient ceiling and the horizontal ceiling are plotted as black circles and white circles, respectively.

  As can be seen in the figure, when the distance from the window installation position is the same, the illuminance of the slope ceiling is higher than the illuminance of the horizontal ceiling over the entire ceiling surface, regardless of the distance from the window installation position. .

  This is because the incident angle of the scattered light taken into the indoor space of each house model with respect to the gradient ceiling is larger than the incident angle with respect to the horizontal ceiling, thereby increasing the amount of light flux incident per unit area. That is, it seems that the illuminance increases.

  For this reason, the ceiling illuminance is higher when the ceiling is inclined so that the ceiling height decreases from the outdoor side toward the indoor side, and the ceiling space is more effective than the horizontal ceiling without the gradient. It can be seen that the illuminance can be increased.

  In the present embodiment, the lighting adjustment plate 3 is composed of the base material 14 and the optical diffuse reflection material 4 attached to the upper surface of the base material. However, incident light can be irregularly reflected on the upper surface of the lighting adjustment plate 3. The lighting adjustment plate may be composed of a base material and an optical diffuse reflection coating coated on the upper surface of the base material, or the entire lighting adjustment plate may be composed of an optical diffuse reflection material. May be. For example, white paint or enamel may be used as the optical diffuse reflection coating.

  In the present embodiment, the ceiling 6 is a gradient ceiling whose ceiling height decreases from the outdoor side toward the indoor side, but natural light incident on the lighting adjustment plate 3 is adjusted even when the ceiling is horizontal. Since scattered light can be sufficiently taken into the indoor space 7 from the second window 2 by irregular reflection on the upper surface of the plate, the illuminance of the indoor space 7 can be ensured.

  In addition, in the present embodiment, the ceiling 6 is configured so that the scattered light incident on the indoor space 7 from the second window 2 is reflected by the ceiling 6 surface and scattered by the indoor space 7. If the surface is configured to have fine irregularities, the scattered light taken into the room and incident on the ceiling will be diffusely reflected by the ceiling surface, and the scattered light will be more effectively scattered throughout the room. Can do.

(Second Embodiment)

  Next, a second embodiment will be described. In addition, about the component substantially the same as the above-mentioned embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  4A and 4B are views showing the daylighting structure of the house according to the present embodiment, where FIG. 4A is a sectional view and FIG. 4B is a detailed sectional view near the ceiling. Moreover, FIG. 5 is the side view which looked at the lighting structure of the house concerning this embodiment from the indoor side. As can be seen from these drawings, the residential daylighting structure 20 according to the present embodiment includes the first window 1 provided on the outer wall 8 and the second window 22 provided above the first window. A lighting adjustment plate 3 is installed between the first window 1 and the second window so as to project horizontally to the outdoor side.

  The window frame 11 of the first window 1 has its lower end installed on the floor 9, and the window frame 12 of the second window 2 has its upper end installed on the ceiling 6, The lower end of the window frame 12 is adjacent to the lighting adjustment plate 3.

  As can be clearly seen in FIG. 4, the ceiling 6 is composed of a gradient ceiling whose ceiling height decreases from the outdoor side toward the indoor side, as in the first embodiment. In addition, it is desirable that the surface of the ceiling 6 be a color having a high light reflectance, particularly white, so that scattered light incident on the ceiling is more effectively reflected to the indoor space 7.

  The daylighting adjustment plate 3 and the first window 1 are arranged so that the direct sunlight does not enter the indoor space 7 from the first window 1, and their shape and size, that is, the projection length L of the daylighting adjustment plate 3. Although the opening height dimension H of the first window 1 is set, since this configuration is the same as that of the first embodiment, the detailed description thereof is omitted here.

  In addition, the lighting adjustment plate 3 is composed of the base material 14 and the optical diffuse reflection material 4 attached to the upper surface of the base material, as in the first embodiment. The incident light thus transmitted can be diffusely reflected on the upper surface thereof.

  Since the optical diffuse reflection material 4 is the same as that of the first embodiment, a detailed description thereof is omitted here.

  The second window 22 is made of a cast glass as an optical diffuse transmission material.

  In the housing lighting structure 20 according to the present embodiment, the first window 1 is provided on the outer wall 8 and the second window 22 is provided above the first window. The lighting adjustment plate 3 is installed so as to project horizontally on the outdoor side between the two windows, and the light adjustment plate 4 is attached to the upper surface of the base material 14 and the base material. It consists of.

  Therefore, as in the first embodiment, the daylighting adjustment plate 3 has the function of a saddle, and the direct sunlight that falls on the first window 1 from the sun, that is, the direct sunlight that falls on the daylighting adjustment plate 3 is daylighted. The adjustment plate 3 is shielded from light.

  Of natural light, the sky light has an incident angle with respect to the first window 1 limited by surrounding buildings, but is originally scattered light and is not shielded by the daylighting adjustment plate 3. Therefore, the scattered light can be taken into the indoor space 7.

  Moreover, in the lighting structure 20 in the house which concerns on this embodiment, the 2nd window 22 is comprised with the cast glass as an optical diffusion transmission material.

  Therefore, natural light incident on the second window 22 from the sun is scattered by passing through the second window 22, whether it is direct sunlight or skylight, and the natural light falling on the lighting adjustment plate 3 is Whether it is direct sunlight or skylight, the light is irregularly reflected on the upper surface of the lighting adjustment plate 3, is scattered again by passing through the second window 22, and enters the indoor space 7 at any angle.

  In other words, not only the direct sunlight with a constant incident angle but also the sky light whose incident angle is limited by the surrounding building is diffusely reflected on the upper surface of the lighting adjustment plate 3, so that the incident angle on the upper surface of the optical diffuse reflection material 4 is changed. It can be led to the indoor space 7 in an independent manner.

  Moreover, in the daylighting structure 20 for the house according to the present embodiment, the ceiling 6 is a sloped ceiling whose ceiling height decreases from the outdoor side toward the indoor side.

  In this way, the illuminance of the ceiling 6 is higher than that of the horizontal ceiling 16 having no gradient, and the illuminance of the indoor space 7 can be increased more effectively.

As can be seen well in FIG. 4, the natural light B incident on the lighting adjustment plate 3 is irregularly reflected on the upper surface of the optical diffuse reflection material 4 and enters the second window 22 as scattered light B ′. 2 is scattered again and taken into the indoor space 7 as scattered light B ″ and enters the ceiling 6. The incident angle θ ₂ of the scattered light B ″ with respect to the ceiling 6 is determined by the horizontal ceiling. Is larger than the incident angle θ ₂ ′ with respect to 16, so that the incident area S ₂ of the scattered light B ″ with respect to the ceiling 6 becomes smaller than the incident area S ₂ ′ with respect to the horizontal ceiling 16. That is, it is considered that the amount of light flux incident per unit area is higher on the gradient ceiling 6 than on the horizontal ceiling 16 and the illuminance is higher.

  As described above, according to the daylighting structure 20 for a house according to the present embodiment, the first window 1 is provided on the outer wall 8 and the second window 22 is provided above the first window. The lighting adjustment plate 3 is installed in the form of horizontally projecting to the outdoor side between the first window 1 and the second window, and the lighting adjustment plate is attached to the upper surface of the base material 14 and the base material. Since it is made up of the optical diffuse reflection material 4 thus formed, the daylighting adjustment plate 3 has the function of a saddle, and direct sunlight that is poured from the sun onto the first window 1, that is, the daylighting adjustment plate 3. The direct sunlight that falls is blocked by the lighting adjustment plate 3.

  Therefore, the direct sunlight is not incident on the indoor space 7 from the first window 1 regardless of the season, and only scattered light can be taken into the indoor space 7 from the first window 1.

  In addition, according to the daylighting structure 20 in the house according to the present embodiment, the second window 22 is made of cast glass as an optical diffusive transmission material, so that natural light falling on the second window 22 is converted into direct sunlight. Natural light that is scattered by passing through the second window 22, whether it is skylight or not, is diffusely reflected on the upper surface of the light adjustment plate 3, whether it is direct sunlight or skylight, The light is scattered again by passing through the two windows 22 and is incident on the indoor space 7 at all angles.

  Therefore, both natural and incident light from the second window 22 to the indoor space 7 is scattered light in both fine weather and cloudy weather, and the scattered light is incident on the ceiling 6 at any angle and scattered into the indoor space 7. Therefore, natural light can be guided to the interior of the room, and the illuminance in the room can be ensured.

  In addition, even if the direct sunlight incident on the first window 1 is blocked by the daylighting adjustment plate 3 as described above, the direct sunlight is taken into the indoor space 7 from the second window 2 as scattered light. Thus, the illuminance of the indoor space 7 can be ensured. In other words, the daylighting adjustment plate 3 simultaneously has a saddle function for shielding direct sunlight from entering the indoor space 7 and a daylighting function for allowing natural light composed of direct sunlight and skylight to enter the indoor space 7 as scattered light. Therefore, it is possible to create a comfortable indoor environment both in fine weather and in cloudy weather.

  Further, according to the daylighting structure 20 in the house according to the present embodiment, since the ceiling is a gradient ceiling whose ceiling height decreases from the outdoor side toward the indoor side, the illuminance of the ceiling 6 is higher than that in the case of the horizontal ceiling 16. It becomes high and it becomes possible to raise the illumination intensity of the indoor space 7 more effectively.

This is because the natural light B incident on the lighting adjustment plate 3 is diffusely reflected on the upper surface of the optical diffuse reflection material 4, enters the second window 22 as scattered light B ′, and passes through the second window again. The scattered light is taken into the indoor space 7 as scattered light B ″ and enters the ceiling 6. The incident angle θ ₂ of the scattered light B ″ with respect to the ceiling 6 is larger than the incident angle θ ₂ ′ with respect to the horizontal ceiling 16. Therefore, the incident area S ₂ of the scattered light B ″ with respect to the ceiling 6 is smaller than the incident area S ₂ ′ with respect to the horizontal ceiling 16. That is, it is considered that the amount of light flux incident per unit area is higher on the gradient ceiling 6 than on the horizontal ceiling 16 and the illuminance is higher.

  Here, an illuminance measurement experiment was performed with respect to the effects related to the daylighting structure 20 of the house according to the present embodiment. Since such an experiment has already been described in the first embodiment, it is omitted here.

  In the present embodiment, the lighting adjustment plate 3 is composed of the base material 14 and the optical diffuse reflection material 4 attached to the upper surface of the base material. However, incident light can be irregularly reflected on the upper surface of the lighting adjustment plate 3. The lighting adjustment plate may be composed of a base material and an optical diffuse reflection coating coated on the upper surface of the base material, or the entire lighting adjustment plate may be composed of an optical diffuse reflection material. May be. For example, white paint or enamel may be used as the optical diffuse reflection coating.

  Further, in the present embodiment, the second window 22 is made of mist glass. However, if the second window 22 is made of an optical diffuse transmission material, the material is arbitrary, for example, frosted glass. May be.

  In the present embodiment, the ceiling 6 is a gradient ceiling whose ceiling height decreases from the outdoor side toward the indoor side, but natural light incident on the lighting adjustment plate 3 is adjusted even when the ceiling is horizontal. Since scattered light can be sufficiently taken into the indoor space 7 from the second window 22 by irregular reflection on the upper surface of the plate, it is possible to ensure the illuminance of the indoor space 7.

  In addition, in the present embodiment, the ceiling 6 is configured so that the scattered light incident on the indoor space 7 from the second window 22 is reflected by the ceiling 6 surface and scattered by the indoor space 7. If the surface is configured to have fine irregularities, the scattered light taken into the room and incident on the ceiling will be diffusely reflected again on the ceiling surface, and the scattered light will be more effectively scattered throughout the room. Can do.

It is the figure which showed the lighting structure of the house which concerns on 1st Embodiment, (a) is sectional drawing, (b) is detailed sectional drawing of the ceiling vicinity. The side view which looked at the lighting structure of the house which concerns on 1st Embodiment from the indoor side. The model figure of the house used in the experiment which concerns on 1st Embodiment, and the graph of the experiment result are shown, (a) is model sectional drawing of the lighting structure of the house which concerns on 1st Embodiment, (b) is a ceiling. Model cross-sectional view of the daylighting structure of the house with a horizontal ceiling, (c) is a graph showing the experimental results. It is the figure which showed the lighting structure of the house concerning 2nd Embodiment, (a) is sectional drawing, (b) is detailed sectional drawing of the ceiling vicinity. The side view which looked at the lighting structure of the house which concerns on 2nd Embodiment from the indoor side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st window 2,22 2nd window 3 Daylighting adjustment board 4 Optical diffuse reflection material 5 Horizontal louver (light-shielding adjustment member)
6 Ceiling 8 Exterior wall 10, 20 Housing lighting structure 14 Base material

Claims (3)

A first window is provided on the outer wall, a second window is provided above the first window, and a lighting adjustment plate is projected between the first window and the second window on the outside side. A lighting structure of an installed house, wherein the lighting adjustment plate is configured so that incident light can be irregularly reflected on an upper surface of the lighting adjustment plate, and direct sunlight is shielded from the second window and the lighting adjustment is performed. A housing lighting structure, characterized in that a light-blocking adjusting member capable of transmitting scattered light from a plate is provided. A first window is provided on the outer wall, a second window is provided above the first window, and a lighting adjustment plate is projected between the first window and the second window on the outside side. The lighting structure of the installed house, wherein the lighting adjustment plate is configured so that incident light can be irregularly reflected on the upper surface of the lighting adjustment plate, and the second window is formed of an optical diffusion transmission material. Characteristic housing lighting structure. The housing lighting structure according to claim 1 or 2, wherein the ceiling of the house is a sloped ceiling so that the ceiling height decreases from the outdoor side toward the indoor side.

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