JP6435737B2 - Daylighting member evaluation apparatus and daylighting member evaluation method - Google Patents

Description

  The present invention relates to a daylighting member evaluation apparatus for evaluating a daylighting member used for taking outside light such as sunlight into a building or the like, and a daylighting member evaluation method using such an apparatus.

  It is well known that the window glass is used to form a bright and comfortable indoor space by taking in outside light such as sunlight inside the building. However, on the other hand, if the outside light incident on the window glass is taken into the room as it is, problems such as feeling dazzling or being limited to a part of the room where the light hits may occur. On the other hand, a technique has been proposed in which sunlight is directly controlled and light is taken indoors in a more comfortable manner.

For example, in Patent Document 1 (Japanese Patent Laid-Open No. 2012-255951), a concave groove extending in one direction is repeatedly produced, and incident light to the transparent sheet material is reflected by filling the concave groove with the filler. A daylighting member (daylighting sheet) is disclosed in which a reflecting surface extending in one direction is formed on at least one slope of a concave groove, and direct sunlight transmitted through a window is introduced indoors by reflection by the reflecting surface.
JP 2012-255951 A

  Incidentally, the performance of the daylighting member cannot be clearly understood only by applying the daylighting member as described above to the actual environment and visually evaluating it.

  Therefore, when trying to quantitatively evaluate the daylighting member as described above, the transmittance of the sample of the daylighting member is adjusted while changing the angle between the incident light and the light receiver with a variable angle spectroscope (goniometer). There is a problem that it takes a long time because of the need to measure.

  In addition, there is a problem in that a sample of a large-area daylighting member is required to prepare a daylighting member in an actual environment and evaluate the illuminance.

  The present invention is for solving the above-described problems, and a lighting member evaluation apparatus according to the present invention is a lighting member evaluation apparatus that evaluates a lighting member that is mounted on a window and performs lighting. A dark box having a portion, a parallel light source that simulates sunlight and emits parallel light, and a daylighting member rotation on which the daylighting member can be mounted so that the daylighting member can rotate within a plane parallel to the main surface of the daylighting member It has a mechanism and an illuminance sensor arranged in the dark box.

  In the daylighting member evaluation apparatus according to the present invention, the daylighting member includes a first main surface on which light is incident and a second main surface on which the light is emitted facing the first main surface, At least a light control film or a light control glass that deflects light incident from one main surface toward the second main surface is included.

  The daylighting member evaluation apparatus according to the present invention is characterized by having a dark curtain that covers the dark box.

In the lighting member evaluation apparatus according to the present invention, the parallel light source is attached to a parallel light source rotation mechanism that rotates around a predetermined reference point, and the parallel light source rotation mechanism is the parallel light source rotation mechanism. The light source varies from a position where the emitted light is incident on the reference point from vertically above to a position where the emitted light is incident on the reference point from the horizontal direction, and the parallel light source is rotated. The mechanism is provided with a scale indicating the position of the parallel light source.

  The daylighting member evaluation device according to the present invention rotates the daylighting member of the daylighting member rotation mechanism from −30 ° to + 30 ° from a reference position, and the daylighting member rotation mechanism includes a rotation position of the daylighting member. It is characterized in that a scale indicating is provided.

  Moreover, the lighting member evaluation apparatus according to the present invention is configured such that an irradiation region in which the light intensity of the parallel light source is less than 10% with respect to the maximum value does not enter the opening of the dark box. Features.

  The daylighting member evaluation apparatus according to the present invention sandwiches the transparent substrate on which the daylighting member is attached with the daylighting member rotating mechanism, and the holding interval of the transparent substrate is 0.5 mm or more and 40 mm or less. It has a fixed nail which can be adjusted.

  Moreover, the lighting member evaluation apparatus according to the present invention includes an illuminance sensor unit in which three or more illuminance sensors used for actual measurement are continuously provided, an illuminance sensor for confirmation used to confirm the illuminance of the parallel light source, Is arranged in the dark box.

  The daylighting member evaluation apparatus according to the present invention includes an illuminance sensor unit stage that can move in the dark box in a depth direction with respect to the opening and can be detached from the dark box.

  In the lighting member evaluation apparatus according to the present invention, an illuminance sensor unit column for attaching the illuminance sensor unit to the illuminance sensor unit stage is provided, and the illuminance sensor unit column has a mounting height of the illuminance sensor unit. The scale which shows is provided.

  Moreover, the lighting member evaluation apparatus according to the present invention includes a confirmation illuminance sensor stage that can move in the dark box in the depth direction with respect to the opening and can be detached from the dark box.

Moreover, the lighting member evaluation apparatus according to the present invention is provided with a confirmation illuminance sensor column that can attach the confirmation illuminance sensor upward or sideways to the confirmation illuminance sensor stage,
The check illuminance sensor support column is provided with a scale indicating a mounting height of the check illuminance sensor.

  In the lighting member evaluation apparatus according to the present invention, the visible light reflectance of the inner wall of the dark box is 5% or less, and the inner wall of the dark box is subjected to matte black alumite processing, black nickel processing, or black chromium processing. It is characterized by being.

  Moreover, the lighting member evaluation apparatus according to the present invention is characterized in that a housing material is attached to the inner wall of the dark box in order to simulate a housing environment.

  Moreover, the lighting member evaluation apparatus according to the present invention is characterized in that the side wall of the dark box is removable.

  Moreover, the lighting member evaluation apparatus according to the present invention is provided with a reference line in the dark box for confirming whether the lighting member rotating mechanism to which the lighting member is attached is appropriately adjusted. Features.

  The daylighting member evaluation apparatus according to the present invention is characterized in that a laser for confirming whether the daylighting member rotating mechanism to which the daylighting member is attached is properly adjusted is detachably provided. And

  Further, the daylighting member evaluation apparatus according to the present invention is characterized in that a mark is provided at a position in the dark box where the light from the laser reaches in order to check whether the laser is properly attached. To do.

  Further, the daylighting member evaluation apparatus according to the present invention is characterized in that it has an auxiliary tool that is detachable and provided with a pinhole in order to confirm whether or not the laser is properly attached.

  The daylighting member evaluation apparatus according to the present invention is characterized in that a reference line for confirming whether the parallel light source is appropriately attached to the parallel light source rotating mechanism is provided in the dark box. To do.

  The daylighting member evaluation apparatus according to the present invention is also a scale indicating the position of the front wall, the front wall forming the dark box and having the opening provided therein is movable in the depth direction with respect to the opening. Is provided.

  The daylighting member evaluation method according to the present invention is a daylighting member evaluation method characterized in that the daylighting member is evaluated using any of the daylighting member evaluation apparatuses described above.

  According to the daylighting member evaluation apparatus and the daylighting member evaluation method according to the present invention, since a variable angle spectroscope (goniometer) is not used, quantitative evaluation of the daylighting member can be performed in a short time by simple measurement. It becomes possible.

  Moreover, according to the lighting member evaluation apparatus and the lighting member evaluation method according to the present invention, it is possible to perform illuminance evaluation without using a sample of a large area lighting member in a measurement environment simulating a real environment. Become.

It is a figure explaining the effect of the lighting member. 3 is a diagram schematically illustrating a cross-sectional structure of a light control member 10. FIG. It is a figure which shows the structural example of the lighting member. It is a figure explaining the structure of the dark box 110 of the lighting member evaluation apparatus 100 which concerns on embodiment of this invention. It is a figure explaining the structure of the dark box 110 of the lighting member evaluation apparatus 100 which concerns on embodiment of this invention. It is a figure explaining the structure of the lighting member evaluation apparatus 100 which concerns on embodiment of this invention. It is sectional drawing which cut the lighting member evaluation apparatus 100 which concerns on embodiment of this invention by xy plane. It is a figure explaining the lighting member rotation mechanism 120 of the lighting member evaluation apparatus 100 which concerns on embodiment of this invention. It is a figure explaining the relationship between the light intensity distribution of the parallel light source 160, and the opening part 119 of the dark box 110. FIG. It is a figure explaining the method to adjust appropriately rotation angle (theta) of the lighting member rotation mechanism 120 in the lighting member evaluation apparatus 100 which concerns on embodiment of this invention. It is a figure explaining the method to adjust appropriately rotation angle (theta) of the lighting member rotation mechanism 120 in the lighting member evaluation apparatus 100 which concerns on embodiment of this invention. It is a figure explaining the method to attach the laser 170 appropriately in the lighting member evaluation apparatus 100 which concerns on embodiment of this invention. It is a figure explaining the method to attach the laser 170 appropriately in the lighting member evaluation apparatus 100 which concerns on embodiment of this invention. It is a figure explaining the structure of the lighting member evaluation apparatus 100 which concerns on other embodiment of this invention. It is a figure explaining the Example of the lighting member evaluation apparatus 100 of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Hereinafter, first, the configuration of the daylighting member 5 that is an evaluation target of the daylighting member evaluation apparatus 100 according to the embodiment of the present invention will be described.

  FIG. 1 is a diagram for explaining the effect of the daylighting member 5. FIG. 1 (A) shows the intake of sunlight from a normal window part, and FIG. 1 (B) shows the case where the sunlight member 5 is attached to the window part and sunlight is introduced. By providing the daylighting member 5 in the window portion, daylighting that brightens the entire interior as uniformly as possible is realized.

  The daylighting member 5 as described above always includes the light control member 10, thereby realizing the daylighting described above. Here, an example of the light control member 10 will be described. FIG. 2 is a diagram schematically illustrating a cross-sectional structure of the light control member 10. Note that in the drawings attached to the present specification, for the sake of illustration and ease of understanding, the scale, vertical and horizontal dimensional ratios, and the like may be appropriately changed or exaggerated from those of the actual product. In addition, from the viewpoint of easy viewing of the drawings, reference numerals are omitted for configurations that repeat periodically.

  As shown in FIG. 2, the light control member 10 includes a first main surface 11 on which light is incident, and a second main surface 12 that faces the first main surface 11 and emits light, and the first main surface 11 emits light. A plurality of low-refractive index medium portions 16 that exist between the main surface 11 and the second main surface 12 and deflect light incident from the first main surface 11 toward the second main surface 12; Prepare.

    The light control member 10 typically extends in a direction perpendicular to the plane of the drawing, and is provided with a plurality of low refractive index medium portions 16 that are periodically provided in the vertical direction of the drawing, and a high refractive index that separates the low refractive index medium portions 16 from each other. A rate medium portion 15. In this case, the interface between the low refractive index medium portion 16 and the high refractive index medium portion 15 is a reflective surface. The low refractive index medium section 16 is configured by a medium having a refractive index lower than that of the high refractive index medium section 15. For example, when the high refractive index medium portion 15 is a resin, the low refractive index medium portion 16 can be made of air or a resin having a lower refractive index than the resin constituting the high refractive index medium portion 15.

  The light L1 incident on the first main surface 11 travels into the light control member 10 and is reflected and deflected by the reflecting surface. Thereafter, the deflected light L1 is emitted from the second main surface 12 facing the first main surface 11 and travels outside the light control member 10.

  In addition, like the light L2 incident on the first main surface 11, the light proceeds into the light control member 10 and is deflected by being refracted at the interface between the low refractive index medium portion 16 and the high refractive index medium portion 15, and the second There is also light emitted from the main surface 12 and traveling out of the light control member 10.

  The light control member 10 having the above functions may be a light control film manufactured from an organic polymer resin material, or may be a light control glass manufactured from an inorganic glass material.

  Although the light control member 10 alone configured as described above can be used as the daylighting member 5, the light control member 10 and the light transmissive member can also be used as the daylighting member 5 in an overlapping manner.

  FIG. 3 is a diagram illustrating a configuration example of the daylighting member 5. For example, FIG. 3A shows a configuration of a daylighting member 5 formed by bonding a light control member 10 and a cloth 20 as a light transmissive member by a bonding layer 50 made of an adhesive or the like.

  FIG. 3B shows the configuration of the daylighting member 5 formed by bonding the light control member 10 and the paper 30 as the light transmissive member with a bonding layer 50 made of an adhesive or the like.

  FIG. 3C shows the configuration of the daylighting member 5 formed by bonding the light control member 10 and the plastic sheet 40 as a light transmissive member by a bonding layer 50 made of an adhesive or the like.

  FIG. 3D shows the configuration of the daylighting member 5 formed by bonding glass 45 as a light transmissive member to both main surfaces of the light control member 10 with a bonding layer 50 made of an adhesive or the like. Show.

  In the example of FIG. 3, the example of the daylighting member 5 using the cloth 20, the paper 30, the plastic sheet 40, and the glass 45 as the light transmissive member is shown, but various other light transmissive members may be used. Can do. 3 illustrates an example in which the lighting member 5 is configured by laminating the light control member 10 and one or two light transmissive members. However, the light control member 10 and three or more light transmissive members have been described. The daylighting member 5 can also be configured by laminating a sex member. In the lighting member evaluation apparatus 100 according to the present invention, the lighting member 5 configured as described above can be quantitatively evaluated.

  Next, the configuration of the daylighting member evaluation apparatus 100 according to the present invention and the evaluation method of the daylighting member 5 by the daylighting member evaluation apparatus 100 will be sequentially described. First, with reference to FIG.4 and FIG.5, the dark box 110 which comprises a part of the lighting member evaluation apparatus 100 which concerns on this invention is demonstrated. 4 and 5 are diagrams illustrating the configuration of the dark box 110 of the daylighting member evaluation apparatus 100 according to the embodiment of the present invention.

  Here, in the following description, coordinates for clarifying the direction and positional relationship of each component are defined. As shown in FIG. 4, the depth direction of the dark box 110 is defined as the x direction, the vertically upward direction is defined as the y direction, and the direction orthogonal to the depth direction of the dark box 110 is defined as the z direction. In the drawings attached to the present specification, such right-handed system coordinates are described for reference as necessary.

  The dark box 110 has a bottom plate 112, a back wall 115 connected to the bottom plate 112, and an upper plate 113 connected to the back wall 115. At least one of the two side walls 116 is removable. Thus, since the side wall 116 is removable, the structure in the dark box 110 can be rearranged appropriately.

In addition, a front wall 117 provided with a rectangular opening 119 is provided in the front portion of the dark box 110. In the completed state of the dark box 110, the dark box 1
The light does not enter 10.

  It is preferable to set the visible light reflectance of the inner wall (the bottom plate 112, the upper plate 113, the back wall 115, the side wall 116, the inner wall of the dark box 110 of the front wall 117) in the dark box 110 to 5% or less. . For this purpose, the inner wall in the dark box 110 may be subjected to matte black alumite processing, black nickel processing, or black chrome processing.

  In addition, when trying to simulate an actual housing environment with the lighting member evaluation apparatus 100 according to the present invention, a housing material such as wallpaper or flooring may be attached to the inner wall of the dark box 110.

  The opening 119 of the front wall 117 is provided with a lighting member rotating mechanism 120 to which the lighting member 5 to be evaluated can be attached. A detailed configuration of the lighting member rotating mechanism 120 will be described later.

  Further, the front wall 117 is provided on a stage (not shown) and can move in the ± x directions. Thereby, when irradiating light with the parallel light source 160 mentioned later with respect to the lighting member 5 attached to the lighting member rotation mechanism 120 of the front wall 117, it can adjust now finely. In addition, a scale (not shown) indicating the position of the front wall 117 in the ± x direction is provided on the stage in which the front wall 117 is movable. By the fine adjustment, it is possible to place the light control member 10 at the rotation center of the parallel light source 160 by moving the light control member 10 of various thicknesses to the position of x = 0.

  In the dark box 110, three or more illuminance sensors 130 used for actual measurement are connected, and an illuminance sensor unit 140 for confirming the illuminance of the parallel light source 160 in the previous stage of actual measurement. 150 (this illuminance sensor for confirmation 150 is composed of one illuminance sensor 130).

  When the parallel light beam emitted from the parallel light source 160 passes through the daylighting member 5, the light enters the dark box 110 from the opening 119 provided in the front wall 117 of the dark box 110, enters the illuminance sensor unit 140, and the illuminance is increased. Measured.

  In addition, the confirmation illuminance sensor 150 is an illuminometer used to confirm whether the illuminance of the parallel light source 160 has an illuminance greater than a certain level before the actual measurement. The position where the light reaches varies depending on the incident angle from the parallel light source 160. Therefore, in the present embodiment, the height and direction of the confirmation illuminance sensor 150 can be changed.

  Note that the measurement data from the illuminance sensor unit 140 and the confirmation illuminance sensor 150 can be configured to be recorded manually, or a log can be automatically recorded by connecting each illuminance sensor to a personal computer or the like. It can also be configured.

  Further, the illuminance sensor unit 140 is provided so that three or more illuminance sensors 130 are connected in series, and any one of the three or more illuminance sensors 130 has an illuminance sensor 130 at a design angle of the daylighting member 5. This is because it can be expected to obtain more accurate illuminance. In general, since the light control member 10 constituting the daylighting member 5 has a certain degree of variation, the illuminance sensor unit 140 is composed of three or more illuminance sensors 130 in order to absorb this variation. In the present embodiment, among the three measured values detected by the three illuminance sensors 130, the maximum one at the emission angle ξ> 0 ° is considered to be the optimum detected illuminance.

The bottom plate 112 corresponding to the opening 119 of the front wall 117 of the dark box 110 is provided with rails 157 along the depth direction. An illuminance sensor unit stage 143 and a confirmation illuminance sensor stage 153 are attached to the rail 157 so as to be movable in the ± x directions.

  The illuminance sensor unit stage 143 and the confirmation illuminance sensor stage 153 are preferably detachable from the rail 157. Further, in the present embodiment, a configuration is shown in which one illuminance sensor unit stage 143 and two confirmation illuminance sensor stages 153 are provided on the rail 157, but the number of illuminance sensor unit stages 143 to be provided is provided. The number of confirmation illuminance sensor stages 153 is arbitrary.

  The illuminance sensor unit stage 143 is provided with an illuminance sensor unit column 145 to which the illuminance sensor unit 140 is attached. The illuminance sensor unit support 145 is provided with a scale (not shown) indicating the mounting height of the illuminance sensor unit 140.

  The confirmation illuminance sensor stage 153 is provided with a confirmation illuminance sensor column 155 to which the confirmation illuminance sensor 150 can be mounted upward or sideways. In the present embodiment, a confirmation illuminance sensor 150 is mounted upward on the shorter confirmation illuminance sensor column 155 of the confirmation illuminance sensor stage 153 on the left side of the paper surface, and the confirmation illuminance sensor on the right side of the paper surface. A confirmation illuminance sensor 150 is mounted on the taller confirmation illuminance sensor column 155 of the stage 153 in a horizontal direction.

  As described above, the confirmation illuminance sensor 150 can be attached to the confirmation illuminance sensor support column 155 upward or sideways depending on the incident angle of light from the parallel light source 160. This is because the illuminance sensor 150 for confirmation attached in the optimum direction for confirmation can be selected so that the illuminance of the parallel light source 160 can be confirmed.

  In addition, the confirmation illuminance sensor column 155 is provided with a scale (not shown) indicating the mounting height of the confirmation illuminance sensor 150.

  Further, the configuration of the parallel light source 160 and the laser 170 is added to the dark box 110 having the above configuration, so that the daylighting member evaluation apparatus 100 according to the present invention is configured. FIG. 6 is a diagram illustrating the configuration of the lighting member evaluation apparatus 100 according to the embodiment of the present invention, and FIG. 7 is a cross-sectional view of the lighting member evaluation apparatus 100 according to the embodiment of the present invention cut along the xy plane. .

  The parallel light source 160 irradiates the daylighting member 5 attached to the daylighting member rotating mechanism 120 with parallel rays. The parallel rays that have passed through the daylighting member 5 enter the dark box 110 from the opening 119 provided in the front wall 117 of the dark box 110, enter the illuminance sensor unit 140, and the illuminance is detected.

  The parallel light source 160 has an xy plane centered on a predetermined reference point (point O in FIG. 7, which is normally assumed to be present in the daylighting member rotation mechanism 120). Inside, the parallel light source 160 is attached to a parallel light source rotation mechanism (not shown) that can rotate. The parallel light source 160 is preferably detachable from the parallel light source rotating mechanism (not shown). The parallel light source rotating mechanism (not shown) can stop the parallel light source 160 at a desired point. Further, the parallel light source rotation mechanism is provided with a scale (not shown) indicating the position of the parallel light source 160.

It is assumed that the measurement is performed such that the light control member 10 in the daylighting member 5 to be evaluated comes to the reference point. This reference point is defined again as the origin of the defined right-handed system coordinates. That is, the coordinates (x, y, z) of the reference point are (0, 0, 0). Further, the angle φ at which the parallel light beam enters the daylighting member 5 from the parallel light source 160 is defined as an angle between the parallel light beam and the x axis in the xy plane, as shown in FIG.

  In the present embodiment, the parallel light source rotation mechanism can cause the parallel light beam from the parallel light source 160 to be incident on the daylighting member 5 at least in the range of the incident angle φ = 90 ° to 180 °. In addition, the parallel light source 160 can be made stationary. Thereby, the parallel light source 160 can be simulated as sunlight.

That is, the parallel light source rotation mechanism is configured so that the parallel light source 160 causes the emitted light to be incident on the reference point from above in the vertical direction, and from the horizontal direction with respect to the reference point. The position can be varied up to the incident position.

  The laser 170 can be attached to a holder (not shown) or the like so that laser light can be emitted vertically upward. Further, the laser 170 is attached to the holder so that the laser light emitted from the laser 170 enters the dark box 110 from the opening 119 provided in the front wall 117 of the dark box 110. With the laser light emitted from the laser 170, it is possible to confirm whether or not the daylighting member 5 is properly attached.

  Next, the daylighting member rotation mechanism 120 to which the daylighting member 5 to be evaluated by the daylighting member evaluation apparatus 100 according to the present invention will be described in detail.

  FIG. 8 is a view for explaining the lighting member rotating mechanism 120 of the lighting member evaluation apparatus 100 according to the embodiment of the present invention. FIG. 8A is a view of the dark box 110 as viewed from the front, and FIG. Is the cross section (xy cross section).

  The daylighting member rotation mechanism 120 attaches the daylighting member 5 so that the daylighting member 5 can rotate in a plane parallel to the main surface of the daylighting member 5. The daylighting member 5 is rotated in a plane parallel to the yz plane. Here, the rotation angle from the reference position of the daylighting member 5 is defined as θ.

  In order to evaluate the daylighting member 5 by the daylighting member evaluation apparatus 100 according to the present invention, the transparent substrate 129 is used when the daylighting member 5 is set. A daylighting member 5 (not shown in FIG. 8) is attached to the transparent substrate 129 with a predetermined adhesive force. For attaching the daylighting member 5 to the transparent substrate 129, for example, water or the like can be used as the member having the predetermined adhesive force, but other members can also be used.

  The daylighting member rotating mechanism 120 has a disc-like base material 121 provided with a circular opening 122 at the center, and the disc-like base material 121 has a transparent substrate on which the daylighting member 5 is attached. Fixing claws 127 for fixing 129 are provided at two locations on the top and bottom.

  The fixed claw 127 sandwiches the transparent substrate 129 with the daylighting member 5 attached between the disk-shaped base member 121 of the daylighting member rotating mechanism 120 and the interval between the transparent substrates 129 is 0.5 mm or more. It can be adjusted to 40 mm or less.

  In actual measurement, the parallel light from the parallel light source 160 is transmitted in the order of the transparent substrate 129 → the daylighting member 5 → the circular opening 122 of the disk-shaped base 121 → the opening 119 of the front wall 117, or the daylighting member 5 → The light passes through the transparent substrate 129 → the circular opening 122 of the disk-shaped base 121 → the opening 119 of the front wall 117 and enters the dark box 110.

  The disc-shaped substrate 121 is provided with arc-shaped slit portions 123 at two upper and lower portions, and a screw member 124 is inserted into each arc-shaped slit portion 123. The screw member 124 is screwed to the front wall 117, and the disc-like base material 121 is fixed by holding the disc-like base material 121 between the head of the screw member 124 and the front wall 117. ing.

  On the other hand, when the screw member 124 is loosened, the disc-shaped substrate 121 can be rotated left and right with respect to the center. Around the disk-shaped base material 121, three outer periphery regulating roller members 126 are rotatably provided so as to assist the rotation of the disk-shaped base material 121 in such a case.

  If the position of the disk-shaped base material 121 shown in FIG. 8 is a reference position (θ = 0 °), the screw member 124 is loosened as described above, the disk-shaped base material 121 is rotated, and the screw member 124 is tightened again. The rotation angle (θ) of the disk-shaped substrate 121 can be changed by fixing the disk-shaped substrate 121. As a result, the daylighting member 5 set on the disk-shaped substrate 121 is also rotated at the rotation angle θ. In the present embodiment, at least the rotation angle θ of the daylighting member 5 is set to be -30 ° to + 30 °. Further, the daylighting member rotating mechanism 120 is provided with a scale (not shown) indicating the rotation angle of the daylighting member 5.

  If the daylighting member 5 is not set so that the low refractive index medium portion 16 (see FIG. 2) in the light control member 10 of the daylighting member 5 is horizontal to the x-axis, accurate illuminance cannot be measured. . Therefore, in the daylighting member evaluation apparatus 100 according to the present invention, the daylighting member 5 is set in the daylighting member rotating mechanism 120 as described above, and the daylighting member 5 is rotated by the daylighting member rotating mechanism 120. , Make accurate illuminance measurements.

  Next, the relationship between the irradiation area of the parallel light source 160 and the area of the opening 119 of the dark box 110 will be described. FIG. 9 is a diagram for explaining the relationship between the light intensity distribution of the parallel light source 160 and the opening 119 of the dark box 110. As shown in FIG. 9, in the present embodiment, the parallel light source 160 is made incident on the opening 119 only in the irradiation region where the light intensity of the parallel light source 160 is 10% or more with respect to the maximum value. The irradiation area where the light intensity is less than 10% with respect to the maximum value is configured not to enter the opening 119 of the dark box 110. Thereby, in the lighting member evaluation apparatus 100 which concerns on this invention, it is trying to ensure the quality of the data of illumination intensity measurement.

  Next, whether or not the daylighting member rotation mechanism 120 to which the daylighting member 5 is attached is appropriately adjusted for measurement, that is, whether or not the rotation angle θ of the daylighting member 5 is appropriately adjusted. Two methods for checking will be described.

  FIG. 10 is a diagram for explaining a method of appropriately adjusting the rotation angle θ of the daylighting member rotating mechanism 120 in the daylighting member evaluation apparatus 100 according to the embodiment of the present invention.

  As described above, in order to accurately measure the illuminance, it is necessary to appropriately adjust the rotation angle θ of the daylighting member 5.

  For this purpose, as shown in FIG. 10, two solid line reference lines 181 and two similar dotted lines arranged outside the lines across the inner walls of the bottom plate 112, the back wall 115, and the upper plate 113 of the dark box 110. A reference line 183 is provided. Each line is provided in a plane parallel to the xy plane.

  In FIG. 10, only the solid line reference line 181 and the dotted line reference line 183 are illustrated among the lines provided in the dark box 110.

  The solid line reference line 181 and the dotted line reference line 183 may be white or gray lines so that they can be easily recognized, or may have a configuration in which grooves are formed.

  When the rotation angle θ of the daylighting member 5 is properly adjusted, when the parallel light source 160 is turned on, the end of the transmitted light from the daylighting member 5 is located between the solid line reference line 181 and the dotted line reference line 183. Each line is provided in advance.

  Before the actual measurement of the illuminance, the rotation angle θ of the daylighting member 5 is adjusted by the daylighting member rotating mechanism 120 so that the end of the transmitted light from the daylighting member 5 is between the solid line reference line 181 and the dotted line reference line 183. Adjust. Thereby, rotation angle (theta) of the lighting member 5 can be made appropriate.

  The solid line reference line 181 and the dotted line reference line 183 indicate that the parallel light source 160 is removed from the parallel light source rotation mechanism (not shown) for maintenance and the parallel light source 160 is again connected to the parallel light source rotation mechanism (not shown). When attaching, it can also be used to confirm whether the parallel light source 160 is properly attached to a parallel light source rotation mechanism (not shown).

  That is, in such confirmation, after the parallel light source 160 is attached to the parallel light source rotation mechanism (not shown), the parallel light source 160 is turned on without the sample lighting member 5 being provided, and from the opening 119. The posture of the parallel light source 160 is adjusted so that both ends of the transmitted light are between the solid line reference line 181 and the dotted line reference line 183.

  Next, another method for adjusting the rotation angle θ of the daylighting member 5 will be described. FIG. 11 is a diagram for explaining a method of appropriately adjusting the rotation angle θ of the daylighting member rotating mechanism 120 in the daylighting member evaluation apparatus 100 according to the embodiment of the present invention.

  As shown in FIG. 11, a single laser reference line 185 is provided across the inner wall of the bottom plate 112, the back wall 115, and the upper plate 113 of the dark box 110. The laser reference line 185 is provided in a plane parallel to the xy plane (a plane other than z = 0).

  In FIG. 11, only the laser reference line 185 is illustrated among the lines provided in the dark box 110.

  The laser reference line 185 may be a white or gray line so that it can be easily recognized, or may be configured to have a groove.

  When the rotation angle θ of the daylighting member 5 is properly adjusted, the laser 170 is arranged so that the transmitted light from the daylighting member 5 comes on the laser reference line 185 when the laser beam is irradiated by the laser 170. Yes. The laser 170 is set so that the laser light travels in a plane parallel to the xy plane. The angle (η) at which the laser beam is incident on the daylighting member 5 is preferably configured so that the posture of the laser 170 can be adjusted as appropriate so that θ can be easily confirmed.

When the rotation angle θ of the daylighting member 5 is not properly adjusted, the transmitted light from the daylighting member 5 does not travel in a plane parallel to the xy plane. Therefore, it is confirmed whether the laser beam emitted from the laser 170 and transmitted through the daylighting member 5 is on the laser reference line 185. If the laser beam is shifted, the rotation angle of the daylighting member 5 is detected by the daylighting member rotating mechanism 120. θ is adjusted so that the laser beam is on the laser reference line 185. Thereby, rotation angle (theta) of the lighting member 5 can be made appropriate.

  Next, two methods for confirming whether or not the laser 170 is attached to a holder (not shown) in a correct posture will be described.

  FIG. 12 is a view for explaining a method for properly attaching the laser 170 in the daylighting member evaluation apparatus 100 according to the embodiment of the present invention.

  When removing the laser 170 from the laser holder (not shown) for maintenance, etc., and reattaching the laser 170 to the laser holder (not shown), check that the laser 170 is properly attached to the laser holder (not shown). In order to confirm, a laser mark 186 is provided on the inner wall of the upper plate 113 of the dark box 110 as shown in FIG.

  When the laser 170 is properly attached to a laser holder (not shown), for example, a cross-shaped laser mark 186 is arranged so that the arrival position of the laser 170 is the laser mark 186. It is like that.

  In FIG. 12, only the laser mark 186 among the lines and marks provided in the dark box 110 is shown.

  The laser mark 186 may be a white or gray line so that it can be easily recognized, or may be configured to have a groove.

  Since the laser mark 186 is arranged on the laser reference line 185 described above, it is desirable that the laser mark 186 be a cross-shaped or x-shaped mark as described above. Alternatively, for example, if the laser reference line 185 is a white line, the laser mark 186 may be a black point on the white line.

  With the above configuration, for example, when the laser 170 is attached to a laser holder (not shown) after maintenance, it is possible to confirm whether the laser 170 is attached in a correct posture.

  Next, another method for confirming whether or not the laser 170 is attached to a laser holder (not shown) in a correct posture will be described.

  FIG. 13 is a view for explaining a method for properly attaching the laser 170 in the daylighting member evaluation apparatus 100 according to the embodiment of the present invention.

  The auxiliary tool 175 can be attached / detached at a position defined in the dark box 110. The auxiliary tool 175 is provided with two pinholes 176, for example.

  Here, when the laser 170 is properly attached to a laser holder (not shown), the two pinholes 176 so that the laser light passes through the two pinholes 176 of the auxiliary tool 175 as described above. Is provided.

  In this example, the number of pinholes 176 provided in the auxiliary tool 175 is two, but may be one, or may be three or more.

Also with the above configuration, for example, when the laser 170 is attached to a laser holder (not shown) after maintenance, it is possible to confirm whether the laser 170 is attached in a correct posture.

  As described above, according to the daylighting member evaluation apparatus 100 and the daylighting member evaluation method according to the present invention, since the variable angle spectroscope (goniometer) is not used, quantitative evaluation of the daylighting member 5 can be performed in a short time by simple measurement. Can be performed.

  Moreover, according to the lighting member evaluation apparatus 100 and the lighting member evaluation method according to the present invention, it is possible to perform illuminance evaluation without using a sample of the lighting member 5 having a large area in a measurement environment simulating a real environment. It becomes possible.

FIG. 14 is a diagram illustrating the configuration of a lighting member evaluation apparatus 100 according to another embodiment of the present invention. In the daylighting member evaluation apparatus 100 according to another embodiment shown in FIG. 14, a configuration having a dark curtain 190 that covers the daylighting member evaluation apparatus itself described so far is employed. Thereby, while having the effect which the lighting member evaluation apparatus demonstrated so far can enjoy, it becomes possible to perform stable illumination intensity evaluation, without minding the indoor environment at the time of measuring.
[Example]
FIG. 15 is a diagram for explaining an embodiment of the daylighting member evaluation apparatus 100 according to the present invention.
(1) Inner width 350mm x Height 380mm x Depth inner dimension with black anodized interior

A dark box 110 having a diameter of 500 mm, a 90 mm square opening 119 and a sample lighting member rotation mechanism 120 on the side of the parallel light source 160, and capable of opening and closing one side of a 380 mm × 500 mm surface is manufactured. Holographic power HLP30), illuminance sensor unit 140 and confirmation illuminance sensor 150 (Konica Minolta T-10MA), laser 170 (Edmond LD Φ2.5 mm, λ = 635 nm, output 0.9 mW) are shown in FIG. Was installed.
(2) The parallel light source 160 (Hololite power HLP30 manufactured by Piphotonics) was fixed at 130 ° in the xy plane as shown in FIG. 15, and the light source was turned on.
(3) Adjust the height and direction of the confirmation illuminance sensor 150 so that the center of the light from the parallel light source 160 that has passed through the opening 119 enters the confirmation illuminance sensor 150 (T-10MA manufactured by Konica Minolta). , Confirmed the illuminance.
(4) A sample A (lighting member 5) of 15 cm × 15 cm × 3 mmT is affixed to a 20 cm × 20 cm transparent acrylic plate (transparent substrate 129), attached to the lighting member rotating mechanism 120, and the light control member 10 in the sample A Tweaked to get x = 0.
(5) The parallel light source 160 was turned off, and the laser 170 (Edmond LD Φ2.5 mm, λ = 635 nm, output 0.9 mW) was fixed at 240 ° in the xy plane and turned on. (6) Check whether the white line (laser reference line 185) written in the dark box 110 and the diffracted light from the sample overlap, rotate sample A, and the white line (laser reference line 185) The rotation angle θ was adjusted by the daylighting member rotation mechanism 120 so that the diffracted light of the samples overlapped.
(7) The laser 170 was turned off and the parallel light source 160 was turned on again.
(8) The center position of the light receiving part of the illuminance sensor unit 140 was placed 20 cm away from the opening 119 and placed at a distance from the bottom plate 112 as shown in Table 1, and the illuminance was measured.

（９）照度センサユニット１４０で測定した照度の中で最大の値を、サンプルＡの評価値とした（表１）。
（１０）同様にサンプルＢ〜Ｄについても測定を行い、評価値を求めた（表１） 。
（１１）サンプルＡ〜Ｄの評価値がいずれも出射角度ξが９．１°となっていることを確認した。
（１２）サンプルＡ〜Ｄに対して照明設計解析ソフトウェアで光学シミュレーションを行い、上部方向へ跳ね上がる光のメインピークの角度（出射角度ξ）が９．５°と求められた。
（１３）照度センサ１３０の受光部の直径がφ１４ｍｍであることから（８）〜（１０）で確認した出射角度ξとその位置での評価値を適用できることが確認できた。

(9) The maximum value among the illuminances measured by the illuminance sensor unit 140 was used as the evaluation value of Sample A (Table 1).
(10) Similarly, samples B to D were measured to obtain evaluation values (Table 1).
(11) It was confirmed that the evaluation values of samples A to D were all 9.1 ° in the emission angle ξ.
(12) An optical simulation was performed on the samples A to D with the illumination design analysis software, and the angle of the main peak of the light jumping upward (the emission angle ξ) was determined to be 9.5 °.
(13) Since the diameter of the light receiving portion of the illuminance sensor 130 is φ14 mm, it was confirmed that the emission angle ξ confirmed in (8) to (10) and the evaluation value at that position can be applied.

5 ... Daylighting member 10 ... Light control member 11 ... 1st main surface 12 ... 2nd main surface 15 ... High refractive index medium part 16 ... Low refractive index medium part 20 ...・ Cloth (light transmissive member)
30 ... paper (light transmissive member)
40 ... Plastic sheet (light transmissive member)
45 ... Glass (light transmissive member)
50 ... Bonding layer 100 ... Daylighting member evaluation device 110 ... Dark box 112 ... Bottom plate 113 ... Top plate 115 ... Back wall 116 ... Side wall 117 ... Front wall 119 ... Opening 120: Daylighting member rotating mechanism 121 ... Disc-shaped substrate 122 ... Circular opening 123 ... Arc-shaped slit 124 ... Screw member 126 ... Outer circumference regulating roller member 127 ... Nail 129 ... Transparent substrate 130 ... Illuminance sensor 140 ... Illuminance sensor unit 143 ... Illuminance sensor unit stage 145 ... Illuminance sensor unit support 150 ... Illuminance sensor 153 for confirmation .. Illuminance sensor stage for confirmation 155... Illumination sensor column for confirmation 157... Rail 160 .. Parallel light source 170... Laser 175. 181 ... solid reference lines 183 ... dashed reference line 185 ... laser reference line 186 for ... laser mark 190 ... blackout

Claims (22)

A lighting member evaluation apparatus for evaluating a daylighting member that is mounted on a window and performs daylighting,
A dark box having an opening;
A parallel light source that simulates sunlight and emits parallel light;
A daylighting member rotation mechanism to which the daylighting member can be attached so that the daylighting member can rotate in a plane parallel to the main surface of the daylighting member;
An illuminance sensor arranged in the dark box, and a daylighting member evaluation apparatus comprising the illuminance sensor. The daylighting member has a first main surface on which light is incident and a second main surface that faces the first main surface and emits light, and the light incident from the first main surface is incident on the second main surface. The daylighting member evaluation apparatus according to claim 1, wherein at least a light control film or a light control glass that deflects toward the surface is included. The daylighting member evaluation apparatus according to claim 1, further comprising a dark curtain that covers the dark box. The parallel light source is attached to a parallel light source rotating mechanism that rotates around a predetermined reference point,
The parallel light source rotating mechanism is configured such that the parallel light source is
From the position where the emitted light is incident vertically from above the reference point,
While changing the emitted light from the horizontal direction to the position where it is incident on the reference point,
The daylighting member evaluation apparatus according to claim 1, wherein the parallel light source rotation mechanism is provided with a scale indicating a position of the parallel light source. Rotating the daylighting member of the daylighting member rotation mechanism from −30 ° to + 30 ° from a reference position;
The daylighting member evaluation apparatus according to any one of claims 1 to 4, wherein the daylighting member rotation mechanism is provided with a scale indicating a rotation position of the daylighting member. 6. The irradiation area of which the light intensity of the parallel light source is less than 10% with respect to the maximum value is configured not to enter the opening of the dark box. The lighting member evaluation apparatus according to claim 1. The transparent substrate to which the daylighting member is affixed is sandwiched between the daylighting member rotation mechanism and a fixing claw capable of adjusting the holding interval of the transparent substrate to 0.5 mm or more and 40 mm or less. The daylighting member evaluation apparatus according to any one of claims 1 to 6. An illuminance sensor unit in which three or more illuminance sensors used for actual measurement are connected, and
The daylighting member evaluation apparatus according to any one of claims 1 to 7, wherein a confirmation illuminance sensor used for confirming the illuminance of the parallel light source is disposed in the dark box. The lighting member evaluation according to any one of claims 1 to 7, further comprising an illuminance sensor unit stage that is movable in the dark box in a depth direction with respect to the opening and that can be detached from the dark box. apparatus. An illuminance sensor unit in which three or more illuminance sensors used for actual measurement are continuously arranged is arranged in the dark box,
An illuminance sensor unit support for attaching the illuminance sensor unit to the illuminance sensor unit stage is provided,
The lighting member evaluation apparatus according to claim 9, wherein the illuminance sensor unit column is provided with a scale indicating a mounting height of the illuminance sensor unit. 11. The daylighting member according to claim 1, further comprising a confirmation illuminance sensor stage that is movable in the dark box in a depth direction with respect to the opening and can be detached from the dark box. Evaluation device. A confirmation illuminance sensor used to confirm the illuminance of the parallel light source is arranged in the dark box,
The confirmation illuminance sensor column that can attach the confirmation illuminance sensor upward or sideways to the confirmation illuminance sensor stage is provided,
The daylighting member evaluation apparatus according to claim 11, wherein the confirmation illuminance sensor column is provided with a scale indicating a mounting height of the confirmation illuminance sensor. The visible light reflectance of the inner wall of the dark box is 5% or less, and the inner wall of the dark box is subjected to matte black alumite processing, black nickel processing, or black chrome processing. The daylighting member evaluation apparatus according to claim 12. The daylighting member evaluation apparatus according to any one of claims 1 to 12, wherein a housing material is attached to an inner wall of the dark box in order to simulate a housing environment. The daylighting member evaluation apparatus according to any one of claims 1 to 14, wherein a side wall of the dark box is removable. The reference line for confirming whether the said lighting member rotation mechanism to which the said lighting member is attached is adjusted appropriately is provided in the said dark box, Any of Claim 1 thru | or 15 characterized by the above-mentioned. The lighting member evaluation apparatus according to claim 1. The laser for confirming whether the said lighting member rotation mechanism to which the said lighting member is attached is adjusted appropriately is provided so that removal is possible, The one of the Claims 1 thru | or 16 characterized by the above-mentioned. The lighting member evaluation apparatus according to Item 1. The daylighting member evaluation apparatus according to claim 17, wherein a mark is provided at a position in the dark box where light from the laser reaches in order to confirm whether the laser is properly attached. 18. The daylighting member evaluation apparatus according to claim 17, further comprising an auxiliary tool that is detachable and provided with a pinhole in order to check whether the laser is properly attached. The parallel light source is attached to a parallel light source rotating mechanism that rotates around a predetermined reference point,
The parallel light source rotating mechanism is configured such that the parallel light source is
From the position where the emitted light is incident vertically from above the reference point,
While changing the emitted light from the horizontal direction to the position where it is incident on the reference point,
The parallel light source rotation mechanism is provided with a scale indicating the position of the parallel light source,
The reference line for confirming whether the said parallel light source is appropriately attached to the said parallel light source rotation mechanism is provided in the said dark box, The any one of Claim 5 thru | or 19 characterized by the above-mentioned. The lighting member evaluation apparatus according to item. The front wall that constitutes the dark box and is provided with the opening is movable in a depth direction with respect to the opening, and a scale indicating the position of the front wall is provided. The lighting member evaluation apparatus according to claim 20. A daylighting member evaluation method, comprising: evaluating a daylighting member using the daylighting member evaluation apparatus according to any one of claims 1 to 21.

Images