JP2015190905A - Pseudo sunlight radiation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pseudo sunlight radiation device capable of suppressing bending of a diffusion member, even during top-bottom reverse use time.SOLUTION: A pseudo sunlight radiation device 200 comprises: a pseudo sunlight radiation box 6 for storing a light source 22, and adjusting spectrum of light of the light source 22 for acquiring pseudo sunlight; plural pseudo sunlight radiation units 1A-1C respectively having a light emission opening facing a radiation surface of the pseudo sunlight radiation box 6, and emitting the pseudo sunlight from the light emission opening; and a light adjustment member 120 arranging the respective pseudo sunlight radiation units 1A-1C in parallel, traversing between the pseudo sunlight radiation units 1A-1C, and supported to a support body 130 of the pseudo sunlight radiation units 1A-1C. During top-bottom reverse use time, separation of the light adjustment member 120 from the support body 130 due to bending deformation of the light adjustment member 120, is suppressed, by connecting the light adjustment member 120.

Description

  The present invention relates to a pseudo-sunlight irradiation device that emits pseudo-sunlight.

Pseudo-sun that irradiates the irradiated surface of solar energy equipment with simulated sunlight that reproduces the emission spectrum of natural sunlight for performance measurement and accelerated degradation tests of various solar energy equipment represented by solar cells A light irradiation device (also called a solar simulator) is known.
In this type of simulated sunlight irradiation device, a light source such as a xenon lamp is installed in the box, and a pseudo-sunlight irradiation box that emits simulated sunlight by providing an optical filter on the radiation surface of the box is provided, Pseudo sunlight radiated from the simulated sunlight irradiation box is emitted from the light exit opening to irradiate the irradiated surface (see, for example, Patent Document 1). In this simulated sunlight irradiating device, in order to reduce the illuminance unevenness of the irradiated surface, a planar light adjusting member for adjusting the emitted light is provided at the light exit opening, and the edge of the light adjusting member is irradiated with the simulated sunlight. It is supported by the frame of the device.

JP 2011-252814 A

By the way, when the installation environment of the apparatus (for example, temperature or humidity) changes, the light adjusting member may change in size due to expansion and contraction. Accordingly, there is a possibility that deformation such as bending occurs in the light adjusting member only by supporting the edge of the light adjusting member on the frame as in the conventional configuration described above. However, in the above-described conventional configuration, a plurality of pseudo-sunlight irradiation units are arranged side by side and are arranged on the light shielding plate between the pseudo-sunlight irradiation units and below the light adjustment member. Was supported by being mounted on the light shielding plate, the amount of bending was relatively small.
However, the simulated sunlight irradiation device may be used upside down, and in this case, the light shielding member is not supported below the light adjustment member, and thus the light adjustment member is not supported.

  This invention is made | formed in view of the situation mentioned above, and it aims at providing the simulated sunlight irradiation apparatus which can suppress the bending of a light adjustment member also at the time of upside down use.

  In order to achieve the above-described object, the present invention includes a pseudo-sunlight irradiation box that houses a light source and obtains pseudo-sunlight by spectrally adjusting the light of the light source, and a radiation surface of the pseudo-sunlight irradiation box A plurality of pseudo-sunlight irradiation units that emit pseudo solar light from the light output aperture, and each pseudo-sunlight irradiation unit is arranged in parallel and between the pseudo-sunlight irradiation units. In the simulated solar light irradiation device provided with a light adjustment member configured to be supported on a support body between the simulated solar light irradiation units, the light adjustment member is connected to the light adjustment member at the time of upside down use. It connected so that the separation | spacing from the said support body by bending deformation might be suppressed.

In the above-described configuration, the light adjustment member may be coupled to the support.
In the above-described configuration, the support may be a light blocking member that blocks light leaking to the side of each pseudo-sunlight irradiation unit.
In the above-described configuration, the connecting member that connects the light adjustment member may have play between the light adjustment member.

  According to the present invention, since the light adjusting member is connected so as to suppress the separation from the support due to the bending deformation of the light adjusting member, the light adjusting member can be prevented from bending even when the top and bottom is reversed.

It is a longitudinal cross-sectional view which shows the structure of the simulated sunlight irradiation apparatus which concerns on embodiment of this invention. It is a side view which shows a simulated sunlight irradiation apparatus. It is AA sectional drawing of FIG. It is a longitudinal cross-sectional view which shows the right half of the right simulated sunlight irradiation unit. It is BB sectional drawing of FIG. It is a figure which shows the structure of a light-diffusion member, (A) is a longitudinal cross-sectional view which shows a simulated sunlight irradiation unit typically with the expanded light-diffusion member, (B) is the light seen from the to-be-irradiated surface side It is a figure which shows a diffusion member. It is sectional drawing which shows a deformation | transformation suppression member. It is a top view which shows a light-diffusion member.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing a configuration of a simulated solar light irradiation apparatus 200 according to the present embodiment. In FIG. 1, W indicates the width direction, and H indicates the height direction.
The simulated sunlight irradiation device 200 includes a plurality (three in the present embodiment) of simulated sunlight irradiation units 1A to 1C. Each of the simulated solar light irradiation units 1A and 1B has a frame 4 in which a plurality of square members 2 are assembled in a lattice shape. The frame 4 has a length of about 1.6 m (meters) and a width of about 0, for example. .9 m and a height of about 0.8 m. Each pseudo-sunlight irradiation unit 1A, 1B includes an auxiliary reflection surface 150A extending in the length direction and an auxiliary reflection surface 150B extending in the width direction.

In the simulated solar light irradiation unit 1C, a frame 4 in which a plurality of square members 2 are assembled in a grid shape has dimensions of, for example, a length of about 1.6 m, a width of about 0.8 m, and a height of about 0.8 m. The pseudo-sunlight irradiation box 6 and the reflection surface 8 are configured and arranged substantially at the center in the width direction of the frame body 4. The pseudo-sunlight irradiation unit 1C has a point in which the dimensions of the frame 4 are different, a point in which the pseudo-sunlight irradiation box 6 and the reflection surface 8 are arranged in the center in the width direction, and a pair of auxiliary reflections extending in the length direction. Except that the surface 150A is not provided, it is configured in the same manner as the simulated solar light irradiation units 1A and 1B.
Each side (side) of the three sides (two sides in the pseudo-sunlight irradiation unit 1C) excluding one side (side) in the length direction of the frame 4 is a shielding plate 5 to prevent external light from entering. Covered.

Each of the simulated sunlight irradiation units 1A to 1C is provided with a simulated sunlight irradiation box 6 that emits simulated sunlight between side surfaces facing each other in the length direction of the frame 4. In each of the simulated sunlight irradiation units 1A to 1C, a reflective surface 8 is disposed to face the upper surface (other surface) 6A of the simulated sunlight irradiation box 6, and is disposed to face the lower surface (one surface) 6B. The irradiated surface 10 </ b> A (for example, a solar battery panel) of the irradiated object 10 is illuminated with the direct light from the simulated sunlight irradiation box 6 and the reflected light from the reflecting surface 8.
In the simulated sunlight irradiation apparatus 200, the simulated sunlight irradiation box 6 is positioned above the irradiated body 10 with respect to the apparatus used in the normal posture in which the simulated sunlight irradiation box is positioned below the irradiated body. It is a device that is used upside down.

FIG. 2 is a side view showing the simulated solar light irradiation apparatus 200, and FIG. 3 is a cross-sectional view taken along the line AA in FIG. FIG. 4 is a longitudinal sectional view showing the right half of the right simulated sunlight irradiation unit 1A. 5 is a cross-sectional view taken along the line BB in FIG.
In the simulated sunlight irradiation box 6, as shown in FIGS. 2 and 3, one straight tube type lamp (light source) 22 is arranged along the simulated sunlight irradiation box 6 to form a linear light source. ing. These lamps 22 are, for example, xenon flash lamps having a strong continuous spectrum over a wide wavelength region from the ultraviolet region to the visible region to the infrared region. Terminal blocks 40 are disposed at both ends of the lamp 22.

  As shown in FIG. 4, the simulated sunlight irradiation box 6 includes a pair of long plate-like side frames 24 that form both side surfaces along the longitudinal direction, an upper surface optical filter 26 that forms an upper surface 6A, and a lower surface 6B. And a metal fitting (not shown) for assembling the side frame 24, the upper surface optical filter 26, and the lower surface optical filter 27. The side frame 24 is formed of a light shielding material, or a light shielding material for preventing light transmission is added or applied thereto.

Each of the upper optical filter 26 and the lower optical filter 27 is a so-called air mass filter that approximates the emission spectrum of the emitted light to sunlight by cutting the infrared wavelength region from the emitted light of the lamp 22, and is a dielectric multilayer film. It is configured using a filter. In addition, the upper optical filter 26 and the lower optical filter 27 engage two plate-shaped filter materials with a mountain shape (valley shape), respectively, in order to make the incident angle of incident light as vertical as possible and suppress the wavelength shift of transmitted light. Is configured.
The simulated sunlight irradiation box 6 is housed in a lamp house 7 formed of a material that does not modulate the spectrum of simulated sunlight emitted by the simulated sunlight irradiation box 6.

4 and 5, the reflecting surface 8 reflects the simulated sunlight from the upper surface 6A of the simulated sunlight irradiation box 6 and tilts the reflecting plate 30 that irradiates the irradiated surface 10A of the irradiated object 10. It has a plurality of reflecting devices 32 that can be freely held.
The irradiated body 10 is arranged such that the irradiated surface 10A is separated from the lamp 22 of the simulated sunlight irradiation box 6 by a predetermined distance L, and the lower surface 6B of the simulated sunlight irradiation box 6 with respect to the irradiated surface 10A. The direct light from the light and the reflected light reflected by the reflecting surface 8 are irradiated. The distribution of the reflected light is controlled so as to compensate for the illuminance unevenness of the direct light on the irradiated surface 10A.

The reflection plate 30 is a metal plate having a surface, and extends substantially in parallel along the simulated sunlight irradiation box 6 as shown in FIG. A reflection device 32 is configured by the reflection plate 30 and a holder 31 that holds the reflection plate 30. The plurality of reflection devices 32 are arranged on the bottom plate 4 </ b> A of the frame body 4, so that the plurality of reflection plates 30 are provided and the reflection surface 8 is formed by these reflection plates 30. .
The holder 31 has an angle adjustment mechanism for adjusting the inclination angle of the reflection plate 30, whereby the reflection angle of light can be adjusted independently for each of the reflection plates 30. ing. At this time, as shown in FIG. 4, the heights of several holders 31 close to both side surfaces in the width direction of the frame body 4 are sequentially lowered, and the reflected light of the reflecting plates 30 on both side surfaces is on the inner side. It is prevented from being shielded by the reflecting plate 30.

As shown in FIG. 1, the auxiliary reflecting surfaces 150 </ b> A and 150 </ b> B are reflecting surfaces that reflect incident light toward the irradiated surface 10 </ b> A and extend from the height position of the simulated sunlight irradiation box 6 to the irradiated surface 10 </ b> A. It is provided in between. The auxiliary reflection surface 150A is disposed on the other side surface facing the one side surface that is not covered with the shielding plate 5, and the auxiliary reflection surfaces 150B are disposed on both side surfaces in the length direction of the simulated solar light irradiation units 1A to 1C, respectively. These auxiliary reflecting surfaces 150A and 150B are metal plate materials. The auxiliary reflecting surfaces 150A and 150B are formed in such a length that does not cause a gap so as not to reduce the illuminance of direct light at the four corners of the irradiated surface 10A. The auxiliary reflection surfaces 150A and 150B may be configured such that the installation angle can be adjusted. For example, when the illuminance drop of direct light on the side surfaces of the simulated sunlight irradiation units 1A to 1C is remarkable, the reflection angle (inclination) Angle) can be adjusted to compensate for the direct light illuminance drop.
As described above, since the auxiliary reflecting surfaces 150A and 150B are arranged on the side surfaces of the simulated sunlight irradiation units 1A to 1C, the light toward the side surfaces of the simulated sunlight irradiation units 1A to 1C is effectively used to While reducing the illuminance of direct light, the simulated sunlight irradiation units 1A to 1C can be reduced in size as compared with the case where the auxiliary reflection surface is provided horizontally above the simulated sunlight irradiation units 1A to 1C.

  The simulated sunlight irradiation box 6, the reflecting surface 8, and the auxiliary reflecting surfaces 150A and 150B constitute a part of the optical system of the simulated sunlight irradiation units 1A to 1C, and each simulated sunlight irradiation unit 1A, The optical system 1B is disposed close to one side surface where the auxiliary reflecting surface 150A extending in the length direction is not disposed.

  In the present embodiment, a light shielding plate (support body, light shielding member) 130 is disposed between the simulated sunlight irradiation units 1A and 1C and between the simulated sunlight irradiation units 1B and 1C. In addition, the gap portion δ is disposed at a predetermined distance M2 from the irradiated surface 10A so as to form a gap δ between the lower end portion 131 and the irradiated surface 10A. The distance M2 is set to a distance at which the boundary between the illuminances by the two pseudo-sunlight irradiation units 1A and 1B becomes inconspicuous. In this embodiment, the light diffusion member 120 on the lamp 22 side from the irradiated surface 10A (details will be described later). ) To the top surface.

Between the simulated sunlight irradiation box 6 and the irradiated surface 10A, a light diffusion unit 101 that covers the entire surface of the irradiated surface 10A and diffuses light so that the illuminance distribution on the irradiated surface 10A is uniform is provided. It has been.
That is, in each of the simulated solar light irradiation units 1A to 1C, in addition to the compensation for the uneven illuminance of the direct light by the reflected light from the reflecting surface 8, the unevenness of the illuminance on the irradiated surface 10A is also reduced by the light diffusion unit 101.

  FIG. 6 is a diagram showing the configuration of the light diffusing members 110 and 120, and FIG. 6A is a longitudinal sectional view schematically showing the simulated sunlight irradiation unit 1A together with the enlarged light diffusing members 110 and 120. FIG. 6B is a diagram showing the light diffusing member 120 viewed from the irradiated surface 10A side. In FIG. 5, the light diffusing members 110 and 120 of the simulated sunlight irradiation unit 1A are illustrated, but the light diffusing members 110 and 120 of the simulated sunlight irradiation units 1B and 1C are also included in the simulated sunlight irradiation unit 1A. The light diffusing members 110 and 120 are configured in the same way.

As shown in FIG. 6, the light diffusing unit 101 includes a base plate 102 and two layers of light diffusing members (light adjusting members) 110 and 120 having a light diffusing effect, and the irradiated surface 10A has a high illuminance. The light diffusing members 110 and 120 diffuse the light traveling toward, thereby making the illuminance distribution uniform on the irradiated surface 10A.
The transmittance of the base plate 102 and the light diffusing members 110 and 120 is constant (flat) in the spectrum range of the simulated sunlight so as not to modulate the spectrum of the simulated sunlight emitted by the simulated sunlight irradiation box 6. Furthermore, a material having a high transmittance is preferably used.

  The base plate 102 is a plate-like member having a rectangular shape in a top view for supporting the light diffusing member 110, and is formed to have a thickness (for example, 30 mm) that can provide rigidity enough to prevent bending due to its own weight. Yes. Since the base plate 102 is positioned below the irradiated object 10 and above the simulated sunlight irradiation box 6 and the reflecting surface 8 in the normal posture, the irradiated object to the simulated sunlight irradiation box 6 and the reflecting surface 8 is used. In order to prevent 10 from falling, it is formed relatively thick (for example, 30 mm). For the base plate 102 of the present embodiment, acrylic resin is used as the material. In addition, you may use glass for this material. The base plate 102 is arranged on the irradiated surface 10A side of the frame 4 so as to completely partition the simulated sunlight irradiation box 6 and the irradiated surface 10A.

  The two layers of light diffusing members 110 and 120 are each formed by laminating a plurality of diffusing plates, and are disposed at a distance D (FIG. 4) between the irradiated surface 10A and the lamp 22. Yes. The light diffusing effect of the light diffusing unit 101, that is, the effect of reducing the illuminance unevenness of the irradiated surface 10A depends on this distance D. In the present embodiment, the distance D between the two layers of the light diffusing members 110 and 120 is set to a distance (for example, 100 mm <D ≦ 200 mm) where the boundary of illuminance by the plurality of reflectors 30 is not noticeable.

Next, a structure for attaching the light diffusion unit 101 to each of the simulated sunlight irradiation units 1A to 1C will be described.
As shown in FIG. 4, each of the simulated sunlight irradiation units 1 </ b> A to 1 </ b> C has an L-shaped cross section extending in parallel with the simulated sunlight irradiation box 6 on the irradiated surface 10 </ b> A side and below the simulated sunlight irradiation box 6. A light diffusing member receiver (holding tool) 103 is provided on each side surface sandwiching the simulated sunlight irradiation box 6. Further, an L-shaped light diffusing member receiver (holding tool) 104 extending orthogonally to the simulated sunlight irradiation box 6 is provided on the irradiated surface 10A side and below the simulated sunlight irradiation box 6. The box 6 is provided on each side surface facing in the length direction.
The base plate 102 and the light diffusing member 110 are placed on the light diffusing member receivers 103 and 104 provided on the irradiated surface 10 </ b> A side, and are fixed by a fixture (not shown). It is placed on the light diffusing member receivers 103 and 104 provided below, and is fixed by a fixture (not shown).
In addition, the base plate 102 corresponding to the simulated sunlight irradiation unit 1 </ b> C is mounted on the light diffusion member receiver 104 at two edges in the width direction.

That is, the base plate 102, the light diffusing member 110, and the light diffusing member 120 are supported by the light diffusing member receivers 103 and 104 on the four sides of the entire edge.
In the present embodiment, the light diffusing member receivers 103 and 104 are formed in an L-shaped cross section, and the inner end surfaces of the light diffusing member receivers 103 and 104 constitute the light emission opening 200A of the simulated sunlight irradiation device 200. ing. That is, the light diffusing members 110 and 120 are provided so as to cover the light exit opening 200 </ b> A of the simulated solar light irradiation device 200.

Next, the configuration of the light diffusing members 110 and 120 will be described in detail with reference to FIG.
The light diffusing member 110 on the irradiated surface 10A side is disposed on the upper surface of the base plate 102, and is configured by laminating a light diffusing plate (optical member) 111 and a light diffusing film (optical member) 112. The light diffusing plate 111 on the irradiated surface 10A side is a plate-like member that is formed to have a size that covers the entire illumination light passing range through which the light that illuminates the irradiated surface 10A passes, and has been matted on both sides. It has a mat-like diffusion surface. The light diffusion plate 111 of the present embodiment has a thickness of about 2 mm and is formed using a material (in this embodiment, an acrylic resin) having substantially the same optical characteristics as the base plate 102.

  The light diffusing film 112 on the base plate 102 side is a film-like member that is formed to have substantially the same size as the light diffusing plate 111, and has diffusion surfaces on both sides. One surface of the diffusion surface is formed into an embossed shape by being embossed, and the light diffusion film 112 is disposed with the diffusion surface having the embossed shape facing the base plate 102 side. The light diffusion film 112 of the present embodiment is formed using a material having a thickness of about 205 μm and a haze that is a ratio of the parallel light transmittance to the diffuse light transmittance of about 50%.

  The light diffusing member 120 on the lamp 22 side includes a plurality of (in this embodiment, four) light diffusing plates 121, 122, 123A, 123B and an illuminance adjusting plate 124 that is a diffusing plate for adjusting illuminance location unevenness. It is configured by stacking. The light diffusing plate 121 has a thickness of about 5 mm, and is configured substantially the same as the light diffusing plate 111 except for the thickness. On the upper surface of the light diffusing plate 121, three light diffusing plates 122, 123A, 123B configured substantially the same as the light diffusing film 112 are placed with the diffusing surface having an embossed shape facing the irradiated surface 10A side. ing. An illuminance adjusting plate 124 formed smaller than the light diffusing plates 121, 122, 123A, 123B is disposed between the two light diffusing plates 122, 123A (see FIG. 6B). The illuminance adjusting plate 124 is a plate-like member having diffusion surfaces on both sides and embossed on one side, and is disposed with the embossed surface facing the lamp 22 side. As a result, the embossed surface of the lower light diffusion plate 123A comes into contact with the embossed surface of the illuminance adjusting plate 124, and the lateral shift of the illuminance adjusting plate 124 can be prevented. In the present embodiment, the illuminance adjusting plate 124 is formed using a material having a thickness of about 270 μm and a haze of about 90%, and has three sizes of 80 mm × 400 mm, 150 mm × 600 mm, and 80 mm × 300 mm. An illuminance adjustment plate 124 is disposed.

As described above, since the illuminance adjusting plate 124 having a relatively high light diffusing effect is provided on the light diffusing member 120 on the lamp 22 side, the illuminance of the irradiated surface 10A is locally changed only by changing the position of the illuminance adjusting plate 124. Light that travels to high places can be more effectively diffused, and fine adjustment of illuminance unevenness can be easily performed. In addition to this, since the light diffused by the illuminance adjusting plate 124 can be further diffused by the light diffusing member 110 on the irradiated surface 10A side, compared to the case where the illuminance adjusting plate is arranged on the light diffusing member 110 on the irradiated surface 10A side, Irradiance unevenness can be further reduced. In addition, even when the illuminance unevenness changes over time or when the lamp 22 is replaced and the illuminance unevenness is changed, the illuminance unevenness can be easily reduced by changing the position and size of the illuminance adjusting plate 124. . Furthermore, since the illuminance adjusting plate 124 is disposed between the light diffusing plates 122 and 123, there is no need to provide a fixture for fixing the illuminance adjusting plate 124, and the number of parts can be reduced.
Each of the simulated sunlight irradiation units 1A to 1C having the light diffusing unit 101 configured as described above has a predetermined area (about 600 mm × 1200 mm) of the irradiated surface 10A located in front of each of the simulated sunlight irradiation units 1A to 1C. ), The illuminance unevenness can be reduced satisfactorily.

In the simulated sunlight irradiation device 200, three simulated sunlight irradiation units 1A to 1C having an effective irradiation area of about 600 mm × 1200 mm are arranged adjacently so that the lamps 22 are arranged in parallel. The simulated solar light irradiation units 1A and 1B are disposed so that the side where the auxiliary reflection surface 150A extending in the length direction is not disposed is opposed to each other, and the pseudo solar light irradiation units 1A and 1B are disposed between the two simulated solar light irradiation units 1A and 1B. A light irradiation unit 1C is arranged.
The illuminance unevenness of the simulated sunlight irradiation device 200 complies with the standard for the simulated sunlight irradiation device (for example, 2% of class A of IEC60904-9 2nd edition).

  By the way, the light diffusing plate 111 may expand and contract due to a change in the environment (a change in temperature and humidity) in which the simulated sunlight irradiation device 200 is arranged. Therefore, if the edges of the four sides of the light diffusing members 110 and 120 are simply supported by the light diffusing member receivers 103 and 104 fixed to the frame body 4, the central portions of the light adjusting members 110 and 120 are bent in the direction of gravity by their own weight. There is a possibility. In particular, the light diffusing plate 121 on which the light diffusing plates 121, 122, 123A, 123B and the illuminance adjusting plate 124 are placed has a thickness of about 5 mm, and is compared as a placing plate that is the lowest layer of the light diffusing member 120. Thinly formed.

Even if the light diffusing plate 121 is relatively thin, for example, in a simulated solar light irradiation device used in a normal posture, the light shielding plate is located below the light diffusing member, so that the bent light adjusting member is placed on the light shielding plate. The amount of deflection is relatively small. On the other hand, in the simulated solar light irradiation device 200 that is used upside down as in the present embodiment, the light shielding plate 130 is not positioned below the light diffusing member 120, so that the amount of deflection of the light diffusing member 120 increases. .
Therefore, in the present embodiment, a deformation suppressing member (connecting member) 160 that suppresses deformation of the light diffusing member 120 is provided.

FIG. 7 is a cross-sectional view showing the deformation suppressing member 160. FIG. 8 is a plan view showing the light diffusing member 120. In FIG. 8, N indicates the length direction along the simulated sunlight irradiation box 6.
As shown in FIG. 7, the deformation suppressing member 160 includes fixtures 162 and 163 that are larger than the diameter of the spacer 161 at both ends of a substantially cylindrical rod-shaped spacer 161. In the present embodiment, the deformation suppressing member 160 fixes a bolt integrally provided with one fixing tool 162 at one end (base end) of the spacer 161 and a nut fitted to the other end (tip end) of the spacer 161. It is provided as a tool 163.
The lower end portion 131 of the light shielding plate 130 is formed in a shape bent in a substantially L-shaped cross section, and the tip portion constitutes a fixing portion 132 that fixes the spacer 161. A through hole 132A is formed in the fixing portion 132, and the spacer 161 is supported by the light shielding plate 130 by being inserted into the through hole 132A and engaging the fixing member 163 at the tip.

A support base 164 on which the light diffusing member 120 is placed is disposed between the fixtures 162 and 163 at both ends. The support base 164 is formed in a substantially disk shape, and an insertion hole 164A for inserting the spacer 161 is formed in the center thereof.
The spacer 161 is formed to have a length having a space a of a predetermined distance between the upper surface 120A of the light diffusion member 120 having a thickness d (5 mm) supported by the support base 164 and the lower end portion 131 of the light shielding plate 130. ing. The space a is set to a gap that can absorb deformation in the vertical direction of the light diffusion member 120 (light diffusion plate 121).

The light diffusion member 120 is formed with a fixing hole 170 for fixing the light diffusion member 120. The fixing hole 170 is formed smaller than the outer diameter (outer peripheral shape) of the support base 164. The diameter b of the fixing hole 170 is formed larger than the diameter c of the spacer 161, and a gap σ is formed between the light diffusion member 120 and the spacer 161. The gap σ is set such that the light diffusing plate 121 is not cracked even if the light diffusing member 120 (the light diffusing plate 121) is bent, deformed, or swelled. In this embodiment, the bolts constituting the fixture 162 and the spacer 161 are M5 size, the space a is about 4 mm, the diameter b of the fixing hole 170 is about 15 mm, and the thickness d of the light diffusion member 120 is about 5 mm. However, it is not limited to the dimensions.
Due to the space a and the gap σ, the light diffusion member 120 is configured to be supported with play in the vertical direction and the horizontal direction with respect to the spacer 161, respectively.

The deformation suppressing member 160 allows the spacer 161 inserted into the insertion hole 164A of the support base 164 to pass through the fixing hole 170 of the light diffusing member 120 and the through hole 132A of the light shielding plate 130, and to the fixing member 163 at the tip of the spacer 161. It is assembled by combining.
As shown in FIG. 8, the fixing hole 170 (through hole 132 </ b> A) is formed at a position that divides the light diffusion member 120 into about three equal parts in the length direction N. Further, as described above, since the light shielding plate 130 is disposed between the three pseudo-sunlight irradiation units 1A to 1B, the fixing hole 170 (through hole 132A) also has the light diffusion member 120 in the width direction W. Is formed at a position that divides approximately three.

  As described above, the light diffusing member 120 is supported by the light diffusing member receivers 103 and 104 on the entire four sides of the edge 120B. The light diffusing member 120 is supported by the deformation suppressing member 160 at the central portion of the light diffusing member 120, specifically, at a position equally divided into about 3 in the length direction N and the width direction W. The deformation suppressing member 160 can suppress deformation of the light diffusion member 120 such as bending, distortion, and swell. In addition, the deformation suppressing member 160 can make the amount of deflection of the light diffusion member 120 substantially equal between the positive sunlight irradiation apparatus with the normal posture and the artificial sunlight irradiation apparatus 200 with the upside-down reversal. It can be made substantially equivalent. Accordingly, the configuration of the light adjusting members 110 and 120 (illuminance unevenness adjustment) can be made the same in the pseudo sunlight irradiation device in the normal posture and the pseudo sunlight irradiation device 200 in the upside down direction, so that the optical design is shared. be able to. Note that the deformation suppressing member 160 may be omitted in the normal posture.

  As described above, according to the present embodiment, the light diffusing member 120 is connected so as to prevent the light diffusing member 120 from being separated from the support (the light shielding plate 130) due to the bending deformation of the light diffusing member 120. The bending of the light diffusing member 120 can also be suppressed.

  Moreover, according to this embodiment, since the light-diffusion member 120 was connected with the support body (light-shielding plate 130) between each simulated sunlight irradiation unit 1A-1B, it is necessary to provide the member which supports the light-diffusion member 120 separately. Therefore, the number of parts can be reduced and the manufacturing process can be simplified.

  Moreover, according to this embodiment, the support body was set as the light-shielding plate 130 which light-shields the light which leaks to the side of each simulated sunlight irradiation unit 1A-1B. With this configuration, since no member that hinders irradiation is disposed between each of the simulated solar light irradiation units 1A to 1B, unevenness in illuminance on the irradiated surface 10A due to the connection of the light diffusion member 120 can be suppressed.

  Further, according to the present embodiment, the deformation suppressing member 160 that couples the light diffusing member 120 is configured to have a gap σ between the light diffusing member 120 and the deformation suppressing member 160. With this configuration, the light diffusing member 120 can be prevented from being distorted or cracked based on the fixing portion (fixing hole 170) due to deformation of the light diffusing member 120 such as bending, distortion, and swell.

However, the above-described embodiment is an aspect of the present invention, and it is needless to say that the embodiment can be appropriately changed without departing from the gist of the present invention.
For example, in the above-described embodiment, a total of four deformation suppressing members 160 are provided at positions that divide the light diffusion member 120 into approximately three equal parts in the length direction N and the width direction W. However, the deformation suppressing member 160 is provided. The number of positions and the number of deformation suppressing members 160 are not limited to this.

In the above-described embodiment, the deformation suppressing member 160 is configured to have play (the space a and the gap σ) in the vertical direction and the horizontal direction of the light diffusion member 120. However, the light diffusion member 120 cannot be moved. You may fix so that it may support.
In the above-described embodiment, the deformation suppressing member 160 includes the spacer 161 and the fixtures 162 and 163. However, the present invention is not limited to this configuration.

  In the above-described embodiment, the light diffusing member 120 is connected to the light shielding plate 130, but the member that connects the light diffusing member 120 is not limited to this. For example, the light diffusing member 120 may be fixed to the frame 4 or the light diffusing member receivers 103 and 104 that support the edge 120B of the light diffusing member 120 via a deformation suppressing member. In this case, the deformation suppressing member is desirably formed of a thin member such as a wire, and more preferably formed of a permeable material so as to suppress uneven illuminance due to the provision of the deformation suppressing member.

In the above-described embodiment, the light diffusing member 120 is connected by the deformation suppressing member 160, but the light adjusting member 110 and the base plate 102 may also be connected by the deformation suppressing member 160.
Further, although the light adjusting member 110 is supported by the light diffusion member receivers 103 and 104 via the base plate 102, the base plate 102 may be omitted.

  Further, the present invention is not limited to a pseudo-sunlight irradiation device for measuring the performance of solar energy utilization equipment, for example, mainly a table type solar simulator or visible light having a large area and an irradiation distance of 100 mm or less. The present invention can also be applied to the irradiation apparatus.

200 Pseudo sunlight irradiation device 200A Light exit opening 1A-1C Pseudo sunlight irradiation unit 6 Pseudo sunlight irradiation box 22 Lamp (light source)
120 Light diffusing member (light adjusting member)
120B Edge 130 Light shielding plate (support, light shielding member)
160 Deformation suppression member (connection member)

Claims (4)

A pseudo-sunlight irradiation box that accommodates a light source and obtains pseudo-sunlight by spectrally adjusting the light of the light source, and is provided with a light exit opening facing a radiation surface of the pseudo-sunlight irradiation box; A plurality of pseudo-sunlight irradiation units that emit light from the light exit opening,
While arranging each simulated sunlight irradiation unit side by side,
In the pseudo-sunlight irradiation device provided with a light adjustment member that is configured to be supported by the support body between the pseudo-sunlight irradiation units across the pseudo-sunlight irradiation units,
The pseudo-sunlight irradiation apparatus, wherein the light adjusting member is connected so as to suppress the separation from the support body due to bending deformation of the light adjusting member when the top and bottom are reversed.   The simulated sunlight irradiation device according to claim 1, wherein the light adjusting member is connected to the support.   The said support body is a light-shielding member which shields the light which leaks to the side of each simulated sunlight irradiation unit, The simulated sunlight irradiation apparatus of Claim 1 or 2 characterized by the above-mentioned.   4. The simulated solar light irradiation device according to claim 1, wherein the connecting member that connects the light adjusting member has play between the light adjusting member and the light adjusting member. 5.

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