JP4135339B2 - Lighting method and lighting device for living room - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lighting method for realizing a comfortable lighting environment indoors, such as a house, and a lighting device for realizing the same.
[0002]
[Prior art]
Conventionally, a ceiling light provided at the center of a ceiling and a pendant light suspended from the ceiling are used as main lighting in a living room such as a house. As a feature of lighting using these ceiling lights and pendant lights, the floor surface has a relatively high illuminance, and the ceiling surface and the upper part of the wall surface other than the luminaire part are lower in illuminance and lower brightness than the part lower than the center of the wall surface. Tend to be. In general, in such an illumination environment using a ceiling light or a pendant light, a high feeling of comfort cannot be obtained.
[0003]
In addition, as a main illumination in a living room such as a house, a lighting fixture attached to a wall is used. As a feature of lighting using lighting fixtures attached to the wall, the ceiling surface is brighter than when using ceiling lights and pendant lights, and the wall surface is brighter in the upper part and in the lower part. There is a tendency that the luminance becomes lower as the time goes. In such an illumination environment using a lighting fixture that is mounted on a wall, a higher sense of comfort can be obtained than in an illumination environment using a ceiling light or a pendant light.
[0004]
[Problems to be solved by the invention]
However, in the lighting environment using the above-described lighting fixtures attached to the wall, the lower part of the wall surface becomes excessively low in illuminance and low brightness, and there is an excessively bright part on the ceiling surface or part of the wall surface. There are also undesirable features such as the presence. For this reason, although a feeling of comfort higher than the lighting environment using a ceiling light or a pendant light can be obtained, a feeling of higher comfort has not been obtained.
[0005]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a comfortable lighting environment that can provide a higher sense of comfort.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention of claim 1 is an area of about 3 to 12 tatami mats, the ratio of the long side to the short side is about 2 or less, and the ceiling height is about 1.8. It is a lighting method of a room space of [m] or more and 3.0 [m] or less, and the region of the wall surface whose height from the floor is 0 to 0.3 [m] is the region A, the height from the floor The area of the wall surface of 1.2 to 1.5 [m] is the area B, the area of the ceiling surface whose distance from the wall surface is 0.6 to 0.9 [m] is the area C, and the vertical surface illuminance of the area A Is Fa, Fb is the vertical surface illuminance of the region B, and Fc is the downward horizontal surface illuminance of the region C, 1.5 ≦ Fb / Fa ≦ 2.0 in the vicinity of the center in the width direction of at least one wall surface of the room. In addition, illumination is performed so as to satisfy 1.0 ≦ Fc / Fb ≦ 2.0.
[0007]
In this configuration, the lower part of the wall surface is lower in illuminance and lower brightness than the center part of the wall so that it is not too dark, and the upper part of the wall and the ceiling surface are higher than the center part of the wall so that they are not too bright. Illuminance, high brightness.
[0008]
Further, the invention according to claim 2 is the illumination method of the living room space according to claim 1, wherein 100 [lx] ≦ Fa ≦ 150 [lx] is satisfied in the vicinity of the center in the width direction of at least one wall surface of the living room. To illuminate. In this configuration, the lower part of the wall surface is not excessively low in illuminance and low brightness, and the lower part of the wall surface is illuminated with appropriate brightness.
[0009]
Further, the invention according to claim 3 is the lighting method of the living room space according to claim 1 or 2, wherein the downward horizontal plane illuminance is Fd in the area of the ceiling surface at a distance of 0.9 [m] or more from the wall surface. , Illumination is performed so as to satisfy 80 [lx] ≦ Fd ≦ 200 [lx]. In this configuration, the ceiling surface does not have excessively high illuminance and brightness, and the ceiling surface is illuminated with appropriate brightness.
[0010]
Further, the invention according to claim 4 is the illumination method for a living room space according to any one of claims 1 to 3, wherein the illuminance in the horizontal plane in the region of the work surface at a distance of 0.5 [m] or more from the wall surface. Is set so that 150 [lx] ≦ Fe is satisfied. In this configuration, the work surface in the living room does not have low illuminance, and the work surface is illuminated with an appropriate brightness that does not hinder the work.
[0011]
The invention according to claim 5 enables adjustment of the horizontal illuminance in the region of the work surface in the lighting method of the living room space according to claim 4. In this configuration, the illuminance is adjusted according to the height of the work surface, and the work surface is illuminated with an appropriate brightness that does not hinder the work regardless of the height.
[0012]
The invention of claim 6 comprises a light source, The height of the living room space with a ceiling height of about 1.8 [m] or more and 3.0 [m] or less is around 2.0 [m]. In a lighting device attached to a wall surface, when the normal direction of the wall surface is 0 °, the vertically upward direction is 90 °, and the vertically downward direction is −90 °, the main light distribution is approximately 90 ° direction or approximately −90 °. Direction, or both about 90 ° direction and −90 ° direction, and the sum of the luminous fluxes emitted in the direction of 30 ° to −30 ° is the luminous flux emitted in the direction of 60 ° to 90 ° and −60 The luminance is 3000 when the luminous intensity of the light emitted in the direction of 0 ° to −30 ° is observed from the range of 25% or more of the total light flux emitted in the direction of ° to −90 °. [Cd / m ² It was made to become the following.
[0013]
In this configuration, the lighting device The ceiling height is about 1.8 [m] or more and 3.0 [m] or less. Living room Around 2.0m in height By installing on the wall surface, the light emitted in the range of 30 ° to −30 ° is irradiated to the opposing wall surface. Further, in the direction from 0 ° to −30 °, the luminance when the luminous intensity is observed from within the range is 3000 [cd / m. ² ] Since the following light is emitted, dazzling to those in the living room space is suppressed.
[0014]
The invention of claim 7 is the illuminating device according to claim 6, wherein the minimum value of the light emitted in the direction of 30 ° to −30 ° is 40 [lm] per 1000 [lm] of light emitted by the light source. cd] or more. In this configuration, the wall surface facing the wall surface on which the illumination device is installed is illuminated with appropriate brightness.
[0015]
The invention according to claim 8 is the illumination device according to claim 6 or 7, wherein the light beam is emitted in the direction of 90 ° to 120 ° and the light beam is emitted in the direction of −90 ° to −120 °. Was made equal to or greater than the sum of the luminous flux emitted in the direction of 120 ° to 180 ° and the luminous flux emitted in the direction of −120 ° to −180 °. In this configuration, the wall surface on which the lighting device is installed is brightly illuminated by light emitted in the directions of 90 ° to 120 ° and in the direction of −90 ° to −120 °.
[0016]
The invention according to claim 9 is the illumination device according to any one of claims 6 to 8, wherein the light source emits a maximum value of light intensity emitted in a direction of −90 ° to −100 °. 120 [cd] or more per 1000 [lm] of light flux. In this configuration, the lower part of the wall surface on which the lighting device is installed is illuminated with appropriate brightness.
[0017]
Further, the invention of claim 10 is the illumination device according to any one of claims 6 to 9, wherein the minimum value of the light intensity emitted in the direction of 30 ° to 60 ° is set to the luminous flux 1000 emitted by the light source. It was set to 40 [cd] or more per [lm]. In this configuration, the ceiling surface direction is illuminated with appropriate brightness.
[0018]
Further, the invention of claim 11 is the illumination device according to any one of claims 6 to 10, wherein the light source emits a minimum value of light intensity emitted in a direction of -30 ° to -60 °. It was set to 40 [cd] or more per 1000 [lm] of light flux. In this configuration, the floor surface direction is illuminated brightly, and the work surface is illuminated with moderate brightness.
[0019]
According to a twelfth aspect of the present invention, in the illumination device according to any one of the sixth to eleventh aspects, the luminous intensity of light emitted in a direction of −30 ° to −60 ° is variable. In this configuration, the light intensity is adjusted according to the height of the work area, and the work area is illuminated with an appropriate brightness regardless of the height of the work area.
[0020]
The invention of claim 13 is the illumination device according to any one of claims 6 to 12, further comprising a spotlight for partially illuminating a predetermined area. In this configuration, the work area in the living room is partially illuminated by the spotlight, and the work area is illuminated with appropriate brightness.
[0021]
The invention of claim 15 includes a light source, The height of the living room space with a ceiling height of about 1.8 [m] or more and 3.0 [m] or less is around 2.0 [m]. In a lighting device attached to a wall surface, when the normal direction of the wall surface is 0 °, the vertical upward direction is 90 °, and the vertical downward direction is −90 °, the light source is released within a range of at least 30 ° to −30 °. A transflective shade that translucently reflects light, and a reflection that reflects light emitted from the light source in a direction of at least approximately 180 ° in a direction of approximately 90 ° to 120 ° and in a direction of approximately −90 ° to −120 °. A total of luminous fluxes that are transmitted through the semi-transparent shade and emitted in the direction of 30 ° to -30 ° and a luminous flux emitted in the direction of 60 ° to 90 ° and -60 ° to -90 °. The luminance is 3000 when the luminous intensity of light transmitted through the semi-transparent shade and emitted in the direction of 0 ° to −30 ° is observed from within the range, with 25% or more of the total luminous flux emitted in the direction. [Cd / m ² The light flux emitted in the direction of 120 ° to 180 ° is the sum of the luminous flux emitted in the direction of 90 ° to 120 ° and the luminous flux emitted in the direction of −90 ° to −120 °. And the sum of the luminous fluxes emitted in the directions of -120 ° to -180 °.
[0022]
In this configuration, By installing the lighting device on a wall surface in the vicinity of a height of about 2.0 [m] in a living room space with a ceiling height of about 1.8 [m] or more and 3.0 [m] or less, Light which is attenuated by the semi-transparent shade and emitted in the range of 30 ° to −30 ° is irradiated to the opposing wall surface. Further, the light in the direction of 0 ° to −30 ° is attenuated by the transflective shade, and when the light intensity is observed from within the range, 3000 [cd / m ² ] Since the following light is emitted, dazzling for those in the living room space is suppressed. Moreover, the wall surface which installed the illuminating device is illuminated brightly with the light emitted in the direction of 90 degrees-120 degrees, and -90 degrees-120 degrees.
[0023]
The invention of claim 16 is an area of about 3 to 12 tatami mats, the ratio of the long side to the short side is about 2 or less, and the ceiling height is about 1.8 [m] or more. The lighting device according to any one of claims 6 to 11 is installed on a wall surface in the vicinity of a height of 2.0 [m] in a room space of 0 [m] or less for illumination.
[0024]
In this configuration, the region of the wall surface having a height from the floor surface of 0 to 0.3 [m] is the region A, and the region of the wall surface having a height from the floor surface of 1.2 to 1.5 [m] is Region B, the region of the ceiling surface whose distance from the wall surface is 0.6 to 0.9 [m] is region C, the vertical surface illuminance of region A is Fa, the vertical surface illuminance of region B is Fb, and the downward direction of region C When the horizontal plane illuminance is Fc, 1.5 ≦ Fb / Fa ≦ 2.0 and 1.0 ≦ Fc / Fb ≦ 2.0 are satisfied in the vicinity of the center in the width direction of at least one wall surface in the living room. Illuminated. As a result, the lower part of the wall surface has a lower illuminance and lower brightness than the center part of the wall so that it does not become too dark, and the upper part of the wall and the ceiling surface have a higher illuminance than the center part of the wall so as not to become too bright. High brightness.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the illumination method of the present invention will be described with reference to the drawings. The present invention seeks a lighting environment that gives a high feeling of comfort and a comfortable brightness. Therefore, the area is about 3 to 12 tatami mats and the ratio of the long side to the short side is about 2 or less. In addition, a psychological evaluation experiment was conducted on the relationship between the illuminance of the living room, the feeling of comfort, and the brightness of the living room with a ceiling height of about 1.8 [m] to 3.0 [m]. As shown in FIG. 1, the experiment is performed in a living room space of about 8 tatami mats, with the lighting fixture 20 attached to the wall surface 21, and the height from the floor surface 22 is 0 to 0.3 [m]. The area 21 is “area A”, the area 21 of the wall surface 21 having a height from the floor 22 of 1.2 to 1.5 [m] is “area B”, and the distance from the wall surface 21 is 0.6 to 0.00. The area of the ceiling surface 23 of 9 [m] is “area C”, the vertical illuminance of area A is Fa, the vertical illuminance of area B is Fb, and the downward horizontal illuminance of area C is Fc. Further, the downward horizontal surface illuminance at the ceiling surface 23 at a distance of 0.9 [m] or more from the wall surface 21 was defined as Fd. Then, an experiment was performed in which the subject evaluated the feeling of comfort and brightness in an illumination environment in which the illuminances Fa, Fb, Fc, and Fd were variously changed.
[0026]
FIG. 2 is a graph showing the relationship between the illuminance of the living room space and the feeling of comfort obtained by the experiment. The horizontal axis represents the value of Fb / Fa (ratio of the illuminance of area B to the illuminance of area A), and the vertical axis The value of Fc / Fb (ratio of the illuminance of the region C to the illuminance of the region B) is taken and the height of “feeling of peace” is expressed by a numerical value and plotted. From this graph, a sense of comfort is obtained when the value of Fb / Fa is 1.5 ≦ Fb / Fa ≦ 2.0 and the value of Fc / Fb is 1.0 ≦ Fb / Fc ≦ 2.0. I understand that.
[0027]
FIG. 3 is a graph showing the relationship between the illuminance of the living room space and the feeling of comfort obtained by the experiment, where the abscissa indicates the value of Fa (the illuminance of region A), and the ordinate indicates the rating value of “feeling of comfort”. Is taken. From this graph, it can be seen that when the value of Fa is about 100 [lx], a feeling of comfort of the rating value 4 or more is obtained.
[0028]
FIG. 4 is a graph showing the relationship between the illuminance of the living room space and the feeling of brightness obtained through experiments, where the horizontal axis indicates the value of Fa (the illuminance of region A), and the vertical axis indicates “brightness feeling”. The rating is taken. From this graph, it can be seen that when the value of Fa is in the range of 100 [lx] ≦ Fa ≦ 150 [lx], a comfortable brightness feeling around a rating value of 5 is obtained.
[0029]
FIG. 5 is a graph showing the relationship between the illuminance and the feeling of brightness of the living room space obtained by experiments. The horizontal axis represents the value of Fd (the ceiling surface with a distance of 0.9 [m] or more from the wall surface 21). 23), and the vertical axis represents the “brightness” rating value. From this graph, it can be seen that when the value of Fd is in the range of 80 [lx] ≦ Fd ≦ 200 [lx], a comfortable brightness feeling around a rating value of 5 is obtained.
[0030]
The present invention has been made based on the results of these psychological evaluation experiments. DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described with reference to the drawings.
[0031]
<First Embodiment>
A schematic configuration of the illumination device 1 according to the first embodiment is shown in FIGS. 6 and 7. The lighting device 1 includes a straight tube fluorescent lamp (light source) 2 having a total luminous flux of 3400 [lm], a substantially arc-shaped shade 3 disposed in front of the fluorescent lamp 2, and a reflector disposed in the rear of the fluorescent lamp 2. 4 is provided.
[0032]
The fluorescent lamp 2 is provided in the lighting device 1 so that the distance from the wall surface 21 is about 7 [cm] when the lighting device 1 is attached to the wall surface 21. The shade 3 is provided at a position about 4 [cm] away from the fluorescent lamp 2, and the transflective shade 3 a having a transmittance of about 37% covering the range of 30 ° to −30 ° from the fluorescent lamp 2 and the fluorescent lamp 2 It is comprised from the impervious shade 3b which covers the range of 30 degrees-60 degrees, and the range from -30 degrees to -60 degrees. The position of the light source is the origin, the normal direction of the wall surface 21 is the 0 ° direction, the upper side is the + direction, and the lower side is the − direction. The reflector 4 is provided between the fluorescent lamp 2 and the wall surface 21 so that the reflection surface is about 5 [cm] from the wall surface 21, and the direction in the range of about 150 ° to 18 ° from the fluorescent lamp 2. The light emitted in the direction of about 90 ° to 150 ° is reflected, and the light emitted in the direction of −150 ° to −180 ° is reflected in the direction of about −90 ° to −150 °. It is configured as follows.
[0033]
With such a configuration, the lighting device 1 emits light attenuated by the transflective shade 3a in the direction of 30 ° to −30 °, and the direction of 30 ° to 60 ° and the direction of −30 ° to −60 °. No light is emitted due to the impervious shade 3b. Further, direct light from the fluorescent lamp 2 and light reflected by the reflector 4 are directly emitted in the direction of about 60 ° to 150 ° and the direction of about −60 ° to −150 °.
[0034]
As a result, as shown in FIG. 8, the main light distribution of the lighting device 1 is in a direction of approximately 90 ° to 120 ° (directly upward direction) and a direction of approximately −90 ° to −120 ° (directly downward direction). That is, the lighting device 1 emits the strongest light in the direction of approximately 90 ° to 120 ° and the direction of approximately −90 ° to −120 °. Further, in FIG. 8, the sum of the luminous fluxes emitted in the direction of the hatched portion indicated by reference numeral (1), that is, in the direction of 30 ° to −30 °, is the direction of the hatched portion indicated by reference number (2), ie, from 60 ° to 90 °. This is 25% or more of the sum of the luminous flux emitted in the direction of ° and the direction of the hatched portion indicated by reference numeral (3), that is, in the direction of −60 ° to −90 °. In addition, the luminous intensity of light emitted in the direction of the hatched portion denoted by reference numeral (4), that is, in the direction of 0 ° to −30 °, is 3000 [cd / m when observed from within that range. ² It becomes the following.
[0035]
Further, in FIG. 9, the minimum value of the light intensity emitted in the direction of the hatched portion indicated by reference numeral (1), that is, in the direction of 30 ° to −30 °, is 40 [1000 [lm] per 1000 luminous fluxes emitted from the fluorescent lamp 2. cd] or more. Also, in FIG. 10, the direction of the hatched portion marked with (1), that is, the direction of about 90 ° to 120 °, and the direction of the hatched portion marked with (2), that is, about −90 ° to −120 ° are released. The sum of the luminous fluxes to be struck becomes larger than the sum of the luminous fluxes emitted in the direction of the hatched portion denoted by reference numeral (3), that is, in the direction of approximately 120 ° to 180 ° and in the direction of approximately −120 ° to −180 °. In addition, the maximum value of the luminous intensity in the direction of the hatched portion indicated by reference numeral 1 in FIG. 11, that is, in the direction of approximately −90 ° to −100 ° is 120 [cd] or more per 1000 [lm] of the luminous flux emitted from the fluorescent lamp 2 It becomes.
[0036]
Then, as shown in FIG. 12, the lighting device 1 has a width of about 3 tatami mats or more and about 12 tatami mats or less, the ratio of the long side to the short side is 2 or less, and the height of the ceiling surface 23 is 1 .8 [m] or more and 3.0 [m] or less, the two wall surfaces 21 facing each other are respectively installed at a height of about 2.0 [m] from the floor surface 22 (the other facing each other) The wall surface 21 and the lighting device 1 attached to the wall surface 21 are not shown).
[0037]
As a result, light emitted in a direction of approximately 90 ° to 120 ° and in a direction of approximately −90 ° to −120 ° has a total light flux of approximately 120 ° to 180 ° and approximately −120 ° to −180 °. It is stronger than the sum of the luminous fluxes emitted in the direction of, so that the wall surface 21 where the lighting device 1 is installed can be illuminated brightly, and the reflected diffused light from the wall surface 21 where the lighting device 1 is installed spreads throughout the room. And a sufficient indirect light component can be secured. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0038]
Further, the sum of the luminous fluxes emitted in the direction of 30 ° to −30 ° is 25 of the total of the luminous fluxes emitted in the direction of 60 ° to 90 ° and the luminous fluxes emitted in the direction of −60 ° to −90 °. % Or more, it is possible to provide appropriate illuminance of 120 [lx] or more to the opposing wall surface 21. Thereby, a comfortable brightness can be given to the person in the living room space.
[0039]
The luminous intensity of light emitted in the direction of 0 ° to −30 ° has a luminance of 3000 [cd / m when observed from within the range. ² ] Since it was made to become the following, the glare to the person in living room space can be suppressed.
[0040]
Moreover, since the minimum value of the luminous intensity of the light emitted in the direction of 30 ° to −30 ° is 40 [cd] or more per 1000 [lm] of the luminous flux emitted from the fluorescent lamp 2, the wall surface 21 on which the lighting device 1 is installed. The opposing wall surface 21 and the ceiling surface 23 can be illuminated brightly. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0041]
Moreover, the maximum value of the luminous intensity in the direction of approximately −90 ° to −100 ° is 120 [cd] or more per 1000 [lm] of the luminous flux emitted from the fluorescent lamp 2, and the illuminance at the lower part of the wall surface 21 where the lighting device 1 is installed. Is 120 [lx] or more, the lower part of the wall surface 21 on which the lighting device 1 is installed can be illuminated brightly. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0042]
Moreover, the area | region of the wall surface 21 whose height from the floor surface 22 is 0-0.3 [m] area | region A, and the area | region of the wall surface 21 whose height from the floor surface 22 is 1.2-1.5 [m]. Is the region B, the region of the ceiling surface 23 having a distance from the wall surface 21 of 0.6 to 0.9 [m] is the region C, the vertical surface illuminance of the region A is Fa, the vertical surface illuminance of the region B is Fb, and the region Assuming that the downward horizontal plane illuminance of C is Fc, 1.5 ≦ Fb / Fa ≦ 2.0 and 1.0 ≦ Fc / Fb ≦ 2.0 are satisfied in the vicinity of the center of the wall surface 21 in the width direction. [Lx] ≦ Fa ≦ 150 [lx] is satisfied. That is, a highly comfortable lighting environment and a comfortable lighting environment obtained by experiments are realized, so that a person in the living room can have a high feeling of comfort and a comfortable brightness.
[0043]
<Second Embodiment>
Next, FIG. 13 shows a schematic configuration of the illumination device 1 according to the second embodiment. In the present embodiment, the shade 3 includes a semi-transmissive shade 3a having a transmittance of about 37% that covers a range from 60 ° to −30 ° from the fluorescent lamp 2, and a range from −30 ° to −60 ° from the fluorescent lamp 2. And an impermeable shade 3b that covers the surface. About another structure, it is the same as that of the said embodiment, The description is abbreviate | omitted.
[0044]
With such a configuration, the luminaire 1 emits light attenuated by the transflective shade 3a in the direction of 60 ° to −30 °, and is impervious shade 3b in the direction of −30 ° to −60 °. Don't give up light. Further, direct light from the fluorescent lamp 2 and light reflected by the reflector 4 are directly emitted in the direction of about 60 ° to 150 ° and the direction of about −60 ° to −150 °.
[0045]
As a result, the illuminating device 1 has a minimum luminous intensity of light emitted in the direction of the hatched portion indicated by reference numeral (1) shown in FIG. It becomes 40 [cd] or more per [lm]. In addition, the direction of about 90 ° to 120 °, the direction of about −90 ° to −120 °, the direction of 30 ° to −30 °, the direction of 0 ° to −30 °, and the direction of −90 ° to −100 °. The light similar to that in the above-described embodiment is emitted.
[0046]
The lighting device 1 has an area of about 3 tatami mats or more and about 12 tatami mats or less, the ratio of the long side to the short side is 2 or less, and the height of the ceiling surface 23 is 1.8 [m] or more and 3 Each of the two wall surfaces 21 facing each other in a living room space of 0.0 [m] or less is installed near a height of 2.0 [m] from the floor surface 22.
[0047]
Thereby, since the minimum value of the luminous intensity of the light emitted in the direction of 30 ° to 60 ° is 40 [cd] or more per 1000 [lm] of the luminous flux emitted from the light source, the ceiling surface 23 is illuminated brightly and the ceiling surface 23 Reflected diffused light from can be secured. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0048]
Further, light emitted in a direction of approximately 90 ° to 120 ° and a direction of approximately −90 ° to −120 ° can brightly illuminate the wall surface 21 on which the illumination device 1 is installed, as in the above embodiment. The reflected diffused light from the wall surface 21 on which the lighting device 1 is installed spreads throughout the room, and a sufficient indirect light component can be secured. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0049]
Further, the light emitted in the direction of 30 ° to −30 ° brings about an appropriate illuminance of 120 [lx] or more on the opposing wall surface 21 as in the above embodiment, and the wall surface 21 on which the lighting device 1 is installed. The opposing wall surface 21 and the ceiling surface 23 can be illuminated brightly. Thereby, a comfortable feeling of brightness can be given to the person in the living room space.
[0050]
Moreover, the light emitted in the direction of 0 ° to −30 ° can suppress glare to the person in the living room space as in the above embodiment.
[0051]
Further, the light emitted in the direction of approximately −90 ° to −100 ° can brightly illuminate the lower portion of the wall surface 21 on which the illumination device 1 is installed, as in the above embodiment. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0052]
Also in the present embodiment, the region of the wall surface 21 whose height from the floor surface 22 is 0 to 0.3 [m] is the region A, and the height from the floor surface 22 is 1.2 to 1.5 [m. ], The area of the wall surface 21 is the area B, the area of the ceiling surface 23 having a distance from the wall surface 21 of 0.6 to 0.9 [m] is the area C, the vertical surface illuminance of the area A is Fa, and the vertical of the area B is Assuming that the surface illuminance is Fb and the downward horizontal surface illuminance of the region C is Fc, 1.5 ≦ Fb / Fa ≦ 2.0 and 1.0 ≦ Fc / Fb ≦ 2.0 in the vicinity of the center of the wall surface 21 in the width direction. And 100 [lx] ≦ Fa ≦ 150 [lx] is satisfied. That is, also in this embodiment, a highly comfortable lighting environment and a comfortable brightness lighting environment obtained through experiments are realized, so that a high comfort feeling and a comfortable brightness feeling are given to those in the living room be able to.
[0053]
Furthermore, in the present embodiment, when the downward horizontal plane illuminance in the area of the ceiling surface 23 that is 0.9 [m] or more away from the wall surface 21 is Fd, 80 [lx] ≦ Fd ≦ 200 [lx] is satisfied. It is filled. That is, another comfortable lighting environment obtained by experiments is also realized, and it is possible to give a feeling of high comfort and a comfortable brightness to the person in the living room.
[0054]
<Third Embodiment>
Next, FIG. 15 shows a schematic configuration of the illumination device 1 according to the third embodiment. In the present embodiment, the shade 3 is composed of a semi-transmissive shade 3a having a transmittance of about 37% covering the range of 60 ° to −60 ° from the fluorescent lamp 2. About another structure, it is the same as that of the said embodiment, The description is abbreviate | omitted.
[0055]
With such a configuration, the lighting device 1 emits light attenuated by the transflective shade 3a in the direction of 60 ° to −60 °. In addition, direct light from the fluorescent lamp 2 and light reflected by the reflector 4 are emitted directly in the direction of about 60 ° to 150 ° and in the direction of about −60 ° to −150 °.
[0056]
As a result, the illuminating device 1 has the minimum value of the intensity of light emitted in the direction of the hatched portion indicated by reference numeral (1) shown in FIG. 16, that is, in the direction of −30 ° to −60 °. More than 40 [cd] per 1000 [lm] of light flux. In addition, the direction of approximately 90 ° to 120 °, the direction of approximately −90 ° to −120 °, the direction of 30 ° to −30 °, the direction of 0 ° to −30 °, the direction of −90 ° to −100 °, And the light similar to said embodiment is emitted to the direction of 30 degrees-60 degrees.
[0057]
The lighting device 1 has an area of about 3 tatami mats or more and about 12 tatami mats or less, the ratio of the long side to the short side is 2 or less, and the height of the ceiling surface 23 is 1.8 [m] or more and 3 Each of the two wall surfaces 21 facing each other in a living room space of 0.0 [m] or less is installed near a height of 2.0 [m] from the floor surface 22.
[0058]
Thereby, since the minimum value of the light intensity emitted in the direction of −30 ° to −60 ° is 40 [cd] or more per 1000 [lm] of the luminous flux emitted from the light source, the direction of the floor surface 22 can be brightly illuminated. . As a result, the work surface has an appropriate brightness, and when a person in the room space performs visual work, an illumination environment that does not hinder the work can be provided.
[0059]
Further, light emitted in a direction of approximately 90 ° to 120 ° and a direction of approximately −90 ° to −120 ° can brightly illuminate the wall surface 21 on which the illumination device 1 is installed, as in the above embodiment. The reflected diffused light from the wall surface 21 on which the lighting device 1 is installed spreads throughout the room, and a sufficient indirect light component can be secured. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0060]
Further, the light emitted in the direction of 30 ° to −30 ° brings about an appropriate illuminance of 120 [lx] or more on the opposing wall surface 21 as in the above embodiment, and the wall surface 21 on which the lighting device 1 is installed. The opposing wall surface 21 and the ceiling surface 23 can be illuminated brightly. Thereby, a comfortable brightness can be given to the person in the living room space.
[0061]
Moreover, the light emitted in the direction of 0 ° to −30 ° can suppress glare to the person in the living room space as in the above embodiment.
[0062]
Further, the light emitted in the direction of approximately −90 ° to −100 ° can brightly illuminate the lower portion of the wall surface 21 on which the illumination device 1 is installed, as in the above embodiment. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0063]
Further, the light emitted in the direction of about 30 ° to 60 ° can illuminate the direction of the ceiling surface 23 brightly and secure the reflected diffused light from the ceiling surface 23 as in the above embodiment. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0064]
Also in the present embodiment, the region of the wall surface 21 whose height from the floor surface 22 is 0 to 0.3 [m] is the region A, and the height from the floor surface 22 is 1.2 to 1.5 [m. ], The area of the wall surface 21 is the area B, the area of the ceiling surface 23 having a distance from the wall surface 21 of 0.6 to 0.9 [m] is the area C, the vertical surface illuminance of the area A is Fa, and the vertical of the area B is Assuming that the surface illuminance is Fb and the downward horizontal surface illuminance of the region C is Fc, 1.5 ≦ Fb / Fa ≦ 2.0 and 1.0 ≦ Fc / Fb ≦ 2.0 in the vicinity of the center of the wall surface 21 in the width direction. And 100 [lx] ≦ Fa ≦ 150 [lx] is satisfied. Moreover, 80 [lx] ≦ Fd ≦ 200 [lx] is satisfied when the downward horizontal plane illuminance in the region of the ceiling surface 23 with a distance of 0.9 [m] or more from the wall surface 21 is Fd. That is, also in this embodiment, a highly comfortable lighting environment and a comfortable brightness lighting environment obtained through experiments are realized, so that a high comfort feeling and a comfortable brightness feeling are given to those in the living room be able to.
[0065]
<Fourth Embodiment>
Next, FIG. 17 shows a schematic configuration of the illumination device 1 according to the fourth embodiment. In the present embodiment, the shade 3 includes a semi-transmissive shade 3a having a transmittance of about 37% covering a range of 30 ° to −30 ° from the fluorescent lamp 2, a range of 30 ° to 60 ° from the fluorescent lamp 2, and −30. It is comprised from the impervious shade 3b which covers the range from ° to the wall surface 21. About another structure, it is the same as that of the said embodiment, The description is abbreviate | omitted.
[0066]
With such a configuration, the lighting device 1 emits light attenuated by the transflective shade 3a in the direction of 30 ° to −30 °, and the direction from 30 ° to 60 ° and the direction from −30 ° to the wall surface 21. No light is emitted due to the impervious shade 3b. Further, in the direction of about 60 ° to 150 °, direct light from the fluorescent lamp 2 and light reflected by the reflector 4 are directly emitted.
[0067]
The lighting device 1 has an area of about 3 tatami mats or more and about 12 tatami mats or less, the ratio of the long side to the short side is 2 or less, and the height of the ceiling surface 23 is 1.8 [m] or more and 3 Each of the two wall surfaces 21 facing each other in a living room space of 0.0 [m] or less is installed near a height of 2.0 [m] from the floor surface 22.
[0068]
As a result, the light emitted in the direction of approximately 90 ° to 120 ° can brightly illuminate the wall surface 21 on which the illumination device 1 is installed, as in the above-described embodiment, and the illumination device 1 is installed. Reflected diffused light from the wall surface 21 spreads throughout the room and a sufficient indirect light component can be secured. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0069]
In addition, the light emitted in the direction of 30 ° to −30 ° provides appropriate illuminance to the opposing wall surface 21 and the opposing wall surface 21 and the ceiling of the wall surface 21 where the lighting device 1 is installed, as in the above embodiment. The surface 23 can be illuminated brightly. Thereby, a comfortable brightness can be given to the person in the living room space.
[0070]
Moreover, the light emitted in the direction of 0 ° to −30 ° can suppress glare to the person in the living room space as in the above embodiment.
[0071]
<Fifth Embodiment>
Next, FIG. 18 shows a schematic configuration of the illumination device 1 according to the fifth embodiment. In the present embodiment, a 40 W straight tube fluorescent lamp 6 capable of dimming is provided below the fluorescent lamp 2, and the fluorescent lamp 2 and the fluorescent lamp 6 are oriented in a direction of approximately −30 ° by a white-coated iron reflector 7. They are separated by The shade 3 is composed of a semi-transmissive shade 3a having a transmittance of about 37% that covers a range of 60 ° to −60 ° from the fluorescent lamp 2 and the fluorescent lamp 6. About another structure, it is the same as that of the said embodiment, The description is abbreviate | omitted.
[0072]
With such a configuration, the illumination device 1 emits light from the dimmable fluorescent lamp 6 in the direction of −30 ° to −60 ° after being attenuated by the transflective shade 3a, and −60 ° to 150 °. The direct light from the dimmable fluorescent lamp 6 and the light reflected by the reflector 4 are emitted directly in the direction of. Further, light from the fluorescent lamp 2 is attenuated and emitted by the semi-transmissive shade 3a in the direction of 60 ° to −30 °, and direct light and reflection from the fluorescent lamp 2 are emitted in the direction of 60 ° to 150 °. The light reflected by the body 4 is emitted directly.
[0073]
As a result, the illumination device 1 has a variable intensity of light emitted in the direction of the hatched portion indicated by reference numeral (1) shown in FIG. 19, that is, in the direction of −30 ° to −60 °. In addition, light similar to that in the above embodiment was emitted in a direction of approximately 90 ° to 120 °, a direction of 30 ° to −30 °, a direction of 0 ° to −30 °, and a direction of 30 ° to 60 °. It is.
[0074]
The lighting device 1 has an area of about 3 tatami mats or more and about 12 tatami mats or less, the ratio of the long side to the short side is 2 or less, and the height of the ceiling surface 23 is 1.8 [m] or more and 3 It is installed on the wall surface 21 of the living room space of 0.0 [m] or less near the height of 2.0 [m] from the floor surface 22.
[0075]
Thereby, the luminous intensity of the light emitted in the direction of −30 ° to −60 ° can be adjusted, and the luminous intensity can be adjusted according to the height of the work surface. Thereby, it is possible to provide an illumination environment that does not hinder the work when the person in the room space performs the visual work regardless of the height of the work surface.
[0076]
Further, light emitted in a direction of approximately 90 ° to 120 ° and a direction of approximately −90 ° to −120 ° can brightly illuminate the wall surface 21 on which the illumination device 1 is installed, as in the above embodiment. The reflected diffused light from the wall surface 21 on which the lighting device 1 is installed spreads throughout the room, and a sufficient indirect light component can be secured. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0077]
In addition, the light emitted in the direction of 30 ° to −30 ° provides appropriate illuminance to the opposing wall surface 21 and the opposing wall surface 21 and the ceiling of the wall surface 21 where the lighting device 1 is installed, as in the above embodiment. The surface 23 can be illuminated brightly. Thereby, a comfortable brightness can be given to the person in the living room space.
[0078]
Moreover, the light emitted in the direction of 0 ° to −30 ° can suppress glare to the person in the living room space as in the above embodiment.
[0079]
Further, the light emitted in the direction of about 30 ° to 60 ° can illuminate the direction of the ceiling surface 23 brightly and secure the reflected diffused light from the ceiling surface 23 as in the above embodiment. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0080]
<Sixth Embodiment>
Next, FIG. 20 shows a schematic configuration of the illumination device 1 according to the sixth embodiment. In the present embodiment, spotlights 8 are provided on both lateral sides of the fluorescent lamp 2. About another structure, it is the same as that of the said embodiment, The description is abbreviate | omitted. The spotlight 8 is rotatably provided so that the illumination direction can be adjusted. Further, the spotlight 8 can be adjusted in brightness.
[0081]
And as shown in FIG. 21, this illuminating device 1 is the area of about 3 to 12 tatami mats, the ratio of the long side to the short side is 2 or less, and the height of the ceiling surface 23 is 1 It is installed on the wall surface 21 of the living room space of not less than 0.8 [m] and not more than 3.0 [m] at a height of about 2.0 [m] from the floor surface 22.
[0082]
Thereby, the reflected diffused light from the wall surface 21 and the ceiling surface 23 due to the light from the fluorescent lamp 2 spreads over the entire room and a sufficient indirect light component is obtained, and the work area 24 is partially divided by illumination from the spotlight 8. And can be illuminated with appropriate brightness. As a result, it is possible to give a feeling of comfort and a comfortable brightness to those who are in the living room, and an appropriate lighting environment that does not hinder the work when the person in the living room performs visual work. Can be given.
[0083]
<Seventh Embodiment>
Next, FIG. 22 shows an illumination method according to the seventh embodiment. In this embodiment, in a room space where the floor surface 22 is 12 tatami mats and the ceiling surface 23 is 2.5 [m] high, the 60 [w] spotlight 9 (total luminous flux 800) is formed on the ceiling surface 23. 1 [lm]), three floor stands 10 (total luminous flux 1000 [lm]) of 75 [w] on the floor 22 and 60 [w] floor-mounted lighting fixture 11 (total luminous flux 800 [lm] ]) Are installed as shown.
[0084]
Thereby, in the wall surface 21, the area | region of the wall surface 21 whose height from the floor surface 22 is 0-0.3 [m] is the area | region A, and the height from the floor surface 22 is 1.2-1.5 [m]. The region of the wall surface 21 is region B, the region of the ceiling surface 23 having a distance from the wall surface 21 of 0.6 to 0.9 [m] is region C, the vertical illuminance of region A is Fa, and the vertical surface of region B is When the illuminance is Fb and the downward horizontal plane illuminance is Fc, Fa = 120 [lx], Fb = 180 [lx], and Fc = 240 [lx]. That is, Fb / Fa = 1.5 and Fc / Fb = 1.3, and 1.5 ≦ Fb / Fa ≦ 2.0 and 1.0 ≦ Fc / Fb ≦ 2.0 are satisfied, and 100 [ lx] ≦ Fa ≦ 150 [lx] is satisfied.
[0085]
Therefore, in the present embodiment, a highly comfortable lighting environment and a comfortable lighting environment obtained by experiments are realized, and a high comfort feeling and a comfortable brightness feeling can be given to those in the living room. it can.
[0086]
<Eighth Embodiment>
Next, an illumination method according to the eighth embodiment is shown in FIG. In this embodiment, in a room space where the floor surface 22 is 12 tatami mats and the ceiling surface 23 is 2.5 [m] high, the 60 [w] spotlight 9 (total luminous flux 800) is formed on the ceiling surface 23. 2 [lm]) are installed, four floor stands 10 (total luminous flux 1000 [lm]) of 75 [w] on the floor surface 22 and 60 [w] floor-mounted lighting fixture 11 (total luminous flux 800 [lm] ]) Are installed as shown.
[0087]
Thereby, in each of the two wall surfaces 21, the region of the wall surface 21 whose height from the floor surface 22 is 0 to 0.3 [m] is the region A, and the height from the floor surface 22 is 1.2 to 1. The area of the wall surface 21 of 5 [m] is the area B, the area of the ceiling surface 23 whose distance from the wall surface 21 is 0.6 to 0.9 [m] is the area C, and the vertical surface illuminance of the area A is Fa. When the vertical illuminance of B is Fb and the downward horizontal illuminance of region C is Fc, Fa = 120 [lx], Fb = 180 [lx], and Fc = 240 [lx]. That is, in each of the two wall surfaces 21, Fb / Fa = 1.5 and Fc / Fb = 1.3, and 1.5 ≦ Fb / Fa ≦ 2.0 and 1.0 ≦ Fc / Fb ≦ 2.0. And 100 [lx] ≦ Fa ≦ 150 [lx] is satisfied.
[0088]
Therefore, in the present embodiment, a highly comfortable lighting environment and a comfortable lighting environment obtained by experiments are realized, and a high comfort feeling and a comfortable brightness feeling can be given to those in the living room. it can.
[0089]
<Ninth Embodiment>
Next, FIG. 24 shows an illumination method according to the ninth embodiment. In the present embodiment, as shown in FIG. 24, the living room space 30 (hatched portion in the figure) is provided at one corner of the large room 31 and is partitioned by a shoji 32 and is adjacent to the side facing the shoji 32. Two combined wall surfaces 21 exist. Two floor stands 10 having a height of 1.8 [m] and one floor lamp 11 having a height of 0.5 [m] are illustrated near one wall surface 21 of the living room space 30. Install as follows. The other wall surface 21 is provided with one wall-mounted illumination 12 around a height of 2.0 [m].
[0090]
Thus, the region of the wall surface 21 having a height from the floor surface of 0 to 0.3 [m] is the region A, and the region of the wall surface 21 having a height from the floor surface of 1.2 to 1.5 [m] is The area of the ceiling surface having a distance from the area B and the wall surface 21 of 0.6 to 0.9 [m] is the area C, the vertical surface illuminance of the area A is Fa, the vertical surface illuminance of the area B is Fb, When the downward horizontal plane illuminance is Fc, Fb / Fa = 1.5 and Fc / Fb = 1.3, and 1.5 ≦ Fb / Fa ≦ 2.0 and 1.0 ≦ Fc / Fb ≦ 2.0. Illuminate to fill.
[0091]
<Tenth Embodiment>
Next, FIG. 25 shows an illumination method according to the tenth embodiment. In the present embodiment, as shown in FIG. 25, the living room space 30 is configured in a substantially semicircular shape, and includes a flat wall surface 21 and a curved wall surface 21a. Then, near the curved wall surface 21a of the living room space 30, two floor stands 10 having a height of 1.8 [m] and two floor lamps 11 having a height of 0.5 [m], Install as shown. In addition, two spotlights 13 with a height of 2.0 [m] are installed on the flat wall surface 21, and pendant lighting with a height of 2.0 [m] suspended from the ceiling in the approximate center of the living room space 30. Four appliances 14 are installed.
[0092]
Thus, the region of the wall surface 21 having a height from the floor surface of 0 to 0.3 [m] is the region A, and the region of the wall surface 21 having a height from the floor surface of 1.2 to 1.5 [m] is The area of the ceiling surface having a distance from the area B and the wall surface 21 of 0.6 to 0.9 [m] is the area C, the vertical surface illuminance of the area A is Fa, the vertical surface illuminance of the area B is Fb, When the downward horizontal plane illuminance is Fc, Fb / Fa = 1.5 and Fc / Fb = 1.3, and 1.5 ≦ Fb / Fa ≦ 2.0 and 1.0 ≦ Fc / Fb ≦ 2.0. Illuminate to fill.
[0093]
<Eleventh embodiment>
Next, an illumination method according to the eleventh embodiment is shown in FIG. In the present embodiment, in a living room space where the floor surface 22 is 12 tatami mats and the ceiling surface 23 is 2.5 [m] in height, a 60 [w] spotlight (total luminous flux 800 [lm] )) Are installed (not shown), 62 [w] ceiling light 15 (total luminous flux 4640 [lm]) is installed on the ceiling 23, and 75 [w] floor stand 10 (total) is installed on the floor 22. Three floor lamps 11 (total luminous flux 800 [lm]) having three luminous fluxes 1000 [lm]) and 60 [w] are installed as shown.
[0094]
Thereby, in each of the two wall surfaces 21, the region of the wall surface 21 whose height from the floor surface 22 is 0 to 0.3 [m] is the region A, and the height from the floor surface 22 is 1.2 to 1. The area of the wall surface 21 of 5 [m] is the area B, the area of the ceiling surface 23 whose distance from the wall surface 21 is 0.6 to 0.9 [m] is the area C, and the vertical surface illuminance of the area A is Fa. When the vertical illuminance of B is Fb and the downward horizontal illuminance of region C is Fc, Fa = 120 [lx], Fb = 180 [lx], and Fc = 240 [lx]. That is, in each of the two wall surfaces 21, Fb / Fa = 1.5 and Fc / Fb = 1.3, and 1.5 ≦ Fb / Fa ≦ 2.0 and 1.0 ≦ Fc / Fb ≦ 2.0. And 100 [lx] ≦ Fa ≦ 150 [lx] is satisfied.
[0095]
Further, when the downward horizontal plane illuminance in the area of the ceiling surface 23 that is 0.9 [m] or more away from the wall surface 21 is Fd, Fd = 80 [lx], and 80 [lx] ≦ Fd ≦ 200 [lx ] Is satisfied.
[0096]
Therefore, in the present embodiment, a highly comfortable lighting environment and a comfortable lighting environment obtained by experiments are realized, and a high comfort feeling and a comfortable brightness feeling can be given to those in the living room. it can.
[0097]
【The invention's effect】
As described above, according to the first aspect of the present invention, the width is about 3 to 12 tatami, the ratio of the long side to the short side is about 2 or less, and the ceiling height is about 1.8 [ m] In a room space of 3.0 [m] or less, the region of the wall surface having a height from 0 to 0.3 [m] from the floor is region A, and the height from the floor is 1.2 to 1 The area of the wall surface of .5 [m] is the area B, the area of the ceiling surface whose distance from the wall surface is 0.6 to 0.9 [m] is the area C, the vertical surface illuminance of the area A is Fa, When the vertical plane illuminance is Fb and the downward horizontal plane illuminance is Fc, 1.5 ≦ Fb / Fa ≦ 2.0 and 1.0 ≦ in the vicinity of the center in the width direction of at least one wall surface of the living room space. Illumination is performed so as to satisfy Fc / Fb ≦ 2.0. As a result, the lower part of the wall surface has a lower illuminance and lower brightness than the center part of the wall surface to such an extent that it does not become too dark, and the higher illuminance than the center part of the wall surface so that the upper part of the wall surface and the ceiling surface do not become too bright. High brightness and a lighting environment with a high level of comfort and a comfortable brightness obtained through experiments are realized, so that a high degree of comfort and a comfortable brightness can be given to those in the living room. it can.
[0098]
According to the second aspect of the present invention, illumination is performed so as to satisfy 100 [lx] ≦ Fa ≦ 150 [lx] in the vicinity of the center in the width direction of at least one wall surface of the living room space. As a result, the lower part of the wall surface is illuminated with moderate brightness without excessively low illuminance and low brightness, and a highly comfortable lighting environment and a comfortable lighting environment obtained through experiments are realized. Therefore, a high sense of comfort and a comfortable brightness can be given to those in the living room.
[0099]
According to the invention of claim 3, 80 [lx] ≦ Fd ≦ 200 [lx], where Fd is the downward horizontal plane illuminance at a ceiling surface area separated by 0.9 [m] or more from the wall surface. Illuminated to meet. As a result, the top surface is illuminated with moderate brightness without excessively high illuminance and brightness, and a highly comfortable lighting environment and a comfortable lighting environment obtained through experiments are realized. Therefore, a high sense of comfort and a comfortable brightness can be given to those in the living room.
[0100]
According to the invention of claim 4, the work surface has an appropriate brightness, and when a person in the living room performs visual work, an environment that does not hinder the work can be provided.
[0101]
According to the fifth aspect of the present invention, it is possible to provide an environment in which work is not hindered when a person in the living room performs visual work regardless of the height of the work surface.
[0102]
According to the invention of claim 6, the lighting device is placed in the vicinity of a height of the wall surface of approximately 2.0 [m] in a living room space having a ceiling height of approximately 1.8 [m] to 3.0 [m]. By installing, the opposing wall surface can be brightened while suppressing glare to the person in the living room space, and the entire living room space can be brightly illuminated by the light in the vertical direction. Thereby, a high sense of comfort can be given to those who are in the room space.
[0103]
According to the seventh aspect of the present invention, the opposite wall surface and ceiling surface of the wall surface on which the illumination device is installed can be illuminated brightly. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0104]
According to the invention of claim 8, the wall surface on which the lighting device is installed can be illuminated brightly, and a sufficient indirect light component can be secured. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0105]
According to the invention of claim 9, the lower part of the wall surface on which the illumination device is installed can be illuminated brightly. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0106]
According to the invention of claim 10, the ceiling surface direction can be illuminated brightly, and reflected diffused light from the ceiling surface can be secured. Thereby, a high sense of comfort and a feeling of comfortable brightness can be given to those who are in the room.
[0107]
According to the invention of claim 11, the floor surface direction can be illuminated brightly. As a result, the work surface has an appropriate brightness, and when a person in the room space performs visual work, an illumination environment that does not hinder the work can be provided.
[0108]
According to the invention of claim 12, the brightness in the floor surface direction can be adjusted. Thereby, it is possible to provide an illumination environment that does not hinder the work when the person in the room space performs the visual work regardless of the height of the work surface.
[0109]
According to the invention of claim 13, the floor surface direction can be partially illuminated according to the work position. As a result, the work surface has an appropriate brightness, and when a person in the room space performs visual work, an illumination environment that does not hinder the work can be provided.
[0110]
According to the fourteenth aspect of the present invention, the brightness in the work surface direction can be adjusted. This makes it possible to provide an illumination environment that does not hinder the work when a person in the room space performs visual work regardless of the position and height of the work surface.
According to the fifteenth aspect of the present invention, the lighting device is placed at a wall height of about 2.0 [m] in a living room with a ceiling height of about 1.8 [m] or more and 3.0 [m]. By installing, as in the invention of claim 6, the opposing wall surface can be brightened while suppressing glare to the person in the living room space, and the entire living room space can be brightly illuminated by the light in the vertical direction. it can. Thereby, a high sense of comfort can be given to those who are in the room space.
[0111]
According to the fifteenth aspect of the present invention, the lighting device is placed near a wall height of approximately 2.0 [m] in a living space having a ceiling height of approximately 1.8 [m] or more and 3.0 [m] or less. By installing, as in the invention of claim 6, the opposing wall surface can be brightened while suppressing glare to the person in the living room space, and the entire living room space can be brightly illuminated by the light in the vertical direction. it can. Thereby, a high sense of comfort can be given to those who are in the room space.
[0112]
According to the sixteenth aspect of the present invention, the width is about 3 to 12 tatami, the ratio of the long side to the short side is about 2 or less, and the ceiling height is about 1.8 [m] or more. In the living room space of 3.0 [m] or less, the region of the wall surface having a height from the floor of 0 to 0.3 [m] is the region A, and the height from the floor is 1.2 to 1.5 [m]. m] is a region of the wall surface, region C is a ceiling surface region whose distance from the wall surface is 0.6 to 0.9 [m], the vertical surface illuminance of region A is Fa, and the vertical surface illuminance of region B is Is Fb and the downward horizontal illuminance of region C is Fc, 1.5 ≦ Fb / Fa ≦ 2.0 and 1.0 ≦ Fc / Fb in the vicinity of the center in the width direction of at least one wall surface of the living room space. Illuminated to satisfy ≦ 2.0. Thus, as in the first aspect of the present invention, the lower part of the wall surface has lower illuminance and lower brightness than the center part of the wall surface, and the upper part of the wall surface and the ceiling surface are not too bright. Higher illumination and higher brightness than the center of the wall, and a highly comfortable lighting environment and a comfortable lighting environment obtained through experiments are realized. A comfortable brightness can be given.
[Brief description of the drawings]
FIG. 1 is a diagram showing an illumination area in a living room space.
FIG. 2 is a diagram showing the relationship between illuminance and comfort in a living room space.
FIG. 3 is a diagram showing a relationship between illuminance and a sense of comfort in a living room space.
FIG. 4 is a diagram showing a relationship between illuminance and a feeling of brightness in a living room space.
FIG. 5 is a diagram illustrating a relationship between illuminance and a feeling of brightness in a living room space.
FIG. 6 is a perspective view showing a schematic configuration of a lighting apparatus according to an embodiment of the present invention.
FIG. 7 is a cross-sectional view showing a schematic configuration of a lighting device according to an embodiment of the present invention.
FIG. 8 is a view showing a light intensity distribution in a cross section of the apparatus.
FIG. 9 is a view showing a light intensity distribution in a cross section of the apparatus.
FIG. 10 is a view showing a light intensity distribution in a cross section of the apparatus.
FIG. 11 is a view showing a light intensity distribution in a cross section of the apparatus.
FIG. 12 is a view showing a state in which the apparatus is attached to a wall surface.
FIG. 13 is a cross-sectional view showing a schematic configuration of a lighting device according to an embodiment of the present invention.
FIG. 14 is a view showing a light intensity distribution in a cross section of the apparatus.
FIG. 15 is a cross-sectional view showing a schematic configuration of a lighting apparatus according to an embodiment of the present invention.
FIG. 16 is a view showing a light intensity distribution in a cross section of the apparatus.
FIG. 17 is a cross-sectional view showing a schematic configuration of a lighting device according to an embodiment of the present invention.
FIG. 18 is a cross-sectional view showing a schematic configuration of a lighting device according to an embodiment of the present invention.
FIG. 19 is a view showing a light intensity distribution in a cross section of the apparatus.
FIG. 20 is a perspective view showing a schematic configuration of a lighting apparatus according to an embodiment of the present invention.
FIG. 21 is a view showing a state in which the apparatus is attached to a wall surface.
FIG. 22 is a diagram showing an illumination method according to an embodiment of the present invention.
FIG. 23 is a diagram showing an illumination method according to an embodiment of the present invention.
FIG. 24 is a diagram showing an illumination method according to an embodiment of the present invention.
FIG. 25 is a diagram showing an illumination method according to an embodiment of the present invention.
FIG. 26 is a diagram showing an illumination method according to an embodiment of the present invention.
[Explanation of symbols]
1 Lighting device
2 Fluorescent lamp (light source)
3 Sade
3a translucent shade
3b Impervious shade
4 Reflectors
6 Fluorescent lamp (light source)
8 Spotlight
9 Spotlight
10 Floor stand
11 Floor lamp
12 Lighting fixture with wall
13 Spotlight
14 Pendant lighting fixtures
15 Ceiling light
21 Wall surface
22 Floor
23 Ceiling
24 work area

Claims (16)

The room space is about 3 to 12 tatami mats, the ratio of the long side to the short side is about 2 or less, and the ceiling height is about 1.8 [m] to 3.0 [m]. A lighting method,
The region of the wall surface having a height from the floor surface of 0 to 0.3 [m] is the region A, the region of the wall surface having a height of 1.2 to 1.5 [m] from the floor surface is the region B, and from the wall surface. The area of the ceiling surface with a distance of 0.6 to 0.9 [m] is defined as area C, the vertical illuminance of area A is Fa, the vertical illuminance of area B is Fb, and the downward horizontal illuminance of area C is Fc. When
Illumination is performed so as to satisfy 1.5 ≦ Fb / Fa ≦ 2.0 and 1.0 ≦ Fc / Fb ≦ 2.0 in the vicinity of the center in the width direction of at least one wall surface in the living room. Lighting method of living room.   2. The lighting method for a living room space according to claim 1, wherein 100 [lx] ≦ Fa ≦ 150 [lx] is satisfied in the vicinity of the center in the width direction of at least one wall surface in the living room. When the downward horizontal surface illuminance is Fd when the distance from the wall is 0.9 [m] or more away from the ceiling surface area,
The lighting method for a living room space according to claim 1, wherein 80 [lx] ≦ Fd ≦ 200 [lx] is satisfied. When the horizontal plane illuminance of the area of the work surface at a distance of 0.5 [m] or more from the wall surface is Fe,
The lighting method for a living room space according to any one of claims 1 to 3, wherein 150 [lx] ≤ Fe is satisfied.   The lighting method of the living room space according to claim 4, wherein a horizontal plane illuminance of the work surface area is adjustable. In a lighting device that includes a light source and is attached to a wall surface in the vicinity of a height of about 2.0 [m] in a living room space with a ceiling height of about 1.8 [m] or more and 3.0 [m] or less ,
When the normal direction of the wall surface is 0 °, the vertical upward direction is 90 °, and the vertical downward direction is −90 °, the main light distribution is approximately 90 ° direction, approximately −90 ° direction, or approximately 90 °. Direction and -90 ° direction,
25% or more of the sum of the luminous fluxes emitted in the direction of 30 ° to −30 ° and the total of the luminous fluxes emitted in the direction of 60 ° to 90 ° and those emitted in the direction of −60 ° to −90 ° And the luminance of the light emitted in the direction of 0 ° to −30 ° is such that the luminance when observed from within the range is 3000 [cd / m ² ] or less. apparatus.   The illumination device according to claim 6, wherein the minimum value of the light intensity emitted in the direction of 30 ° to -30 ° is set to 40 [cd] or more per 1000 [lm] of light flux emitted from the light source. .   The sum of the luminous flux emitted in the direction of 90 ° to 120 ° and the luminous flux emitted in the direction of −90 ° to −120 ° is the sum of the luminous flux emitted in the direction of 120 ° to 180 ° and −120 ° to −180. The illumination device according to claim 6 or 7, wherein the illumination device is equal to or greater than a sum of luminous fluxes emitted in the direction of °.   9. The maximum value of luminous intensity of light emitted in a direction of −90 ° to −100 ° is set to 120 [cd] or more per 1000 [lm] of luminous flux emitted from the light source. The lighting apparatus in any one.   The minimum value of the luminous intensity of light emitted in the direction of 30 ° to 60 ° is set to 40 [cd] or more per 1000 [lm] of luminous flux emitted from the light source. The lighting device described in 1.   The minimum value of the luminous intensity of light emitted in the direction of -30 ° to -60 ° is set to 40 [cd] or more per 1000 [lm] of light emitted from the light source. The lighting apparatus in any one.   The lighting device according to any one of claims 6 to 11, wherein the luminous intensity of light emitted in a direction of -30 ° to -60 ° is variable.   The illuminating device according to claim 6, further comprising a spotlight that partially illuminates a predetermined area.   The lighting device according to claim 13, wherein the intensity of the spotlight is variable. In a lighting device that includes a light source and is attached to a wall surface in the vicinity of a height of about 2.0 [m] in a living room space with a ceiling height of about 1.8 [m] or more and 3.0 [m] or less ,
When the normal direction of the wall surface is 0 °, the vertical upward direction is 90 °, and the vertical downward direction is −90 °, the light emitted from the light source in the range of at least 30 ° to −30 ° is half-transmitted. A transmission shade, and a reflector that reflects light emitted from the light source in a direction of at least about 180 ° in a direction of about 90 ° to 120 ° and a direction of about −90 ° to −120 °,
The sum of the luminous fluxes that are transmitted through the semi-transmissive shade and emitted in the direction of 30 ° to −30 ° is emitted in the direction of −60 ° to −90 ° with the luminous flux emitted in the direction of 60 ° to 90 °. More than 25% of the total luminous flux
The brightness of light transmitted through the semi-transparent shade and emitted in the direction of 0 ° to −30 ° is such that the luminance when observed from within the range is 3000 [cd / m ² ] or less,
The sum of the luminous flux emitted in the direction of 90 ° to 120 ° and the luminous flux emitted in the direction of −90 ° to −120 ° is the sum of the luminous flux emitted in the direction of 120 ° to 180 ° and −120 ° to −−. An illuminating device characterized in that it is equal to or greater than a sum of luminous fluxes emitted in a direction of 180 °.   In a living room space of about 3 to 12 tatami mats, the ratio of the long side to the short side is about 2 or less, and the ceiling height is about 1.8 [m] to 3.0 [m]. A lighting method for a living room, wherein the lighting device according to any one of claims 6 to 11 is installed on a wall surface at a height of about 2.0 [m] and illuminated.

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