JP2002296319A - Pseudo sunlight irradiation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pseudo-sunlight irradiation apparatus which can be miniaturized as a whole, which does not use a high-cost acrylic plate and which can reduce the usage number of optical filters, and to provide a pseudo-sunlight irradiation apparatus in which light source means are combined properly so as to be formed, when a large irradiation face is required. SOLUTION: A lamp 2, such as a xenon lamp 2 or the like, is installed in a light-shielding box body 1 having a light emission face, whose area is smaller than the irradiation rage of pseudo sunlight. A pseudo-sunlight irradiation box C in which an optical filter 4 is attached to the light emitting face is installed, so as to be directed to an object to be measured, made to be supported by a frame 9. The lamp 2 is turned on, and the object A, to be measured, being placed in the irradiation range is irradiated with the pseudo-sunlight.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simulated sunlight irradiating apparatus which can be manufactured at a low cost by using a small light source apparatus, which can obtain a sufficient irradiation range and reduce the number of components.

[0002]

2. Description of the Related Art A simulated sunlight irradiator is a light source device for reproducing a spectrum distribution of natural sunlight with high accuracy, and measures performance of various solar energy utilizing devices such as photoelectric conversion characteristics of solar cells. This is indispensable for accelerated aging tests.

As shown in FIG. 3, for example, a conventional simulated sunlight irradiation apparatus has a box-shaped frame 11 surrounded by a light-shielding material.
A lamp 16 such as a xenon lamp serving as a light source is installed in the lower part of the inside of the frame, and a translucent support plate 12 for an optical filter is provided on the The optical filter 14 is installed, and the frame
A transparent plate 13 for supporting the solar cell is installed on the upper part of the solar cell 11, and the solar cell module A is mounted on the transparent plate 13. On the lamp 16, a reflector 17 for adjusting the illuminance is arranged. ,
When the lamp 16 is turned on, the light is reflected by the reflection plate 17 and transmitted through the optical filter 14 so that the object to be measured, for example, the solar cell module A is irradiated with the simulated sunlight.

However, in such a simulated sunlight irradiation apparatus as described above, a box-shaped frame 11 having an upper surface opening serving as a light emitting surface formed larger than the irradiation area is indispensable to secure a required irradiation area. In addition, an expensive transparent acrylic plate, which has good light transmittance, is hardly broken, and is lightweight, is often used for the support plate 12 for the optical filter and the transparent plate 13 for supporting the solar cell. Filter 14
Usually, since an optical filter of about 400 mm square is used, it is necessary to arrange a plurality of these optical filters side by side in the upper opening of the frame 11 having a large area. There was a problem of becoming.

[0005]

DISCLOSURE OF THE INVENTION In view of the above-mentioned prior art, the present invention aims to reduce the size of the entire apparatus, use no expensive acrylic plate, and reduce the number of optical filters used. It is an object of the present invention to provide a simulated sunlight irradiation device which is formed by appropriately combining light source means with a sunlight irradiation device and an apparatus requiring a large irradiation surface.

[0006]

SUMMARY OF THE INVENTION An object of the present invention, which has been made to solve the above-mentioned problems, is to provide a simulated sunlight irradiating apparatus having a light shielding surface having a light radiating surface having a smaller area than the illuminated area of the simulated sunlight. A lamp such as a xenon lamp is installed in the box, and an illuminating box for simulated sunlight having an optical filter attached to the light emitting surface is installed toward an object to be measured supported on a gantry. It is characterized in that it is illuminated to illuminate the measurement target placed in the irradiation range with the simulated sunlight.

According to the present invention, in the above configuration, a reflecting plate is appropriately installed in the box in which the lamp is installed, and a reflecting plate is appropriately installed in the irradiation box, and the rear surface of the optical filter is irradiated in the box. By adjusting the illumination unevenness of the lamp,
A simulated solar device with a large irradiation area can be realized with a small device, and the size and cost of the device can be reduced.

In the apparatus of the present invention, a reflection member is provided outside the optical filter of the irradiation box to restrict the light diffused through the filter within the irradiation range, so that the light can be applied to substantially the entire area of the object to be measured. Irradiation of the simulated sunlight can be appropriately performed.

In the present invention, the simulated sunlight irradiation box includes not only a hexahedral box as shown but also a hollow polyhedron or a hollow sphere.

On the other hand, in the present invention, a plurality of irradiation boxes for simulated sunlight are arranged side by side, and a simulated sunlight device is formed so as to irradiate an irradiation area of a plurality of light emitting surfaces in each irradiation box. In this simulated solar device, in order to make the light emitted from the lamps of each irradiation box substantially uniform in the illuminated range of the simulated sunlight in which the object to be measured is arranged, an asymmetric reflector is provided for each lamp. Is arranged, when the lamps are turned on, the entire range of the object to be measured is irradiated with pseudo-sunlight of substantially uniform intensity. For example,
The object to be measured has a long irradiation area horizontally,
Or even if you need a larger irradiation area,
A simulated sunlight irradiation device having a large irradiation area corresponding to these light receiving surfaces can be obtained.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional side view of an example of the apparatus of the present invention, FIG. 2 is a side view of another example, and FIG. 3 is a sectional view of an example of a conventional apparatus.

In FIG. 1, reference numeral 1 denotes a small light-shielding box in which an upper surface is opened as a light emitting surface and a xenon lamp 2 is installed via a mounting bracket 3 therein, and 4 denotes a box of the box 1. An optical filter 5 mounted on the open surface, a shallow parabolic reflector 5 installed at the lower part in the box 1, 6
Is a reflection plate having a phase opposite to that of the reflection plate 5 installed above the lamp 2 in the box 1. The reflection plates 5 and 6 allow uniform light to pass through the optical filter 4 when the lamp 2 is turned on. This is for transmitting the light, and thus constitutes the irradiation box C for pseudo-sunlight. The optical filter 4 has a size of about 400 mm square. Therefore, the light emitting surface of the box 1 has an opening large enough to mount the optical filter 4. When attaching the optical filter 4 to the box 1, a transparent plate such as an acrylic plate having a thickness of about 5 to 10 mm may be interposed between the optical filter 4 and the box 1.

Reference numeral 7 denotes a gantry which is located outside the irradiation box C with the illuminating box C at the center. Supports 7a for supporting the solar cell module A to be measured are formed at the upper four corners of the gantry 7. I have. The support portions 7a may be formed at the four corners of the gantry 7 or at the inner peripheral edge of the upper frame. Reference numeral 8 denotes a reflector provided on both sides of the optical filter 4 for restricting diffused light passing through the filter 4 within an irradiation range. When the lamp 2 is turned on, light transmitted through the optical filter 4 irradiates the solar cell module A. As described above, an example of the device of the present invention is configured. The reflecting plate 8 is for irradiating the edge of the solar cell module A with light, for example, in the same manner as other portions, so as to prevent uneven illuminance.

FIG. 2 shows another example of the simulated sunlight irradiation apparatus of the present invention using two irradiation boxes C. In FIG.
A mounting frame 9a for mounting the simulated sunlight irradiation box C which is inwardly inclined and a support frame for supporting the solar cell module A
9b, and a plurality of simulated sunlight irradiation boxes C are fixed to the frame 9a with the light emitting surface provided with the filter 4 facing the side (left side in FIG. 2). Then, the horizontally elongated solar cell module A is mounted on the support frame 9b by the irradiation box C.
Another embodiment of the device of the present invention is mounted and supported in a position facing the light emitting surface of the present invention.

In the apparatus shown in FIG. 2, when the lamps 2 in each irradiation box C are turned on, the light transmitted through each optical filter 4 is irradiated almost uniformly on the entire light receiving surface of the solar cell module A. For this reason, in the irradiation box C used in FIG. 2, the shape of the reflecting plates 5 and 6 in FIG. 1 is changed with respect to the lamp 2 as a light source as shown by reference numerals 5a and 5b and 6a and 6b in FIG. The reflecting plate 8 was used only when it was positioned outside the irradiation range. By doing so, uneven illuminance of the simulated sunlight to the solar cell module A having a wide light receiving surface does not occur, and effective light irradiation can be performed. Note that FIG.
In the apparatus of the present invention, the two irradiation boxes C, C have a part or all of the side surfaces 1C, 1C opposed to each other as a light emitting surface (translucent).
In some cases, it is formed. In the figure, S is a stopper that supports the lower part of the solar cell module A.

As described above, in the apparatus of the present invention shown in FIG. 2, the shape of the irradiation area on the object A to be measured, specifically, the length and width of the area, Since the measurement target A needs a horizontally long irradiation area, for example, by arranging two pseudo-sunlight irradiation boxes C side by side as described above, If a horizontally long irradiation surface can be obtained, and if four irradiation boxes C for simulated sunlight are arranged two in each of the vertical and horizontal directions in a cross, a simulated sunlight irradiation device having an irradiation area four times as large here You can get

[0017]

The present invention is as described above. A lamp such as a xenon lamp is installed in a light-shielding box having a light-emitting surface with a smaller area than the irradiation range of the simulated sunlight. An irradiation box for simulated sunlight having an optical filter attached to the light emitting surface is set up toward the object to be measured supported by the gantry, and the lamp is turned on to measure the simulated sunlight in the irradiation range. Since the target is illuminated, use a transparent plate (acryl plate) for supporting the optical filter or a transparent plate (acryl plate) for supporting the object to be measured, which is expensive like a conventional simulated sunlight irradiation device. Even if it is used, even if it is used, it is enough to support one optical filter, and it uses a pseudo-sunlight irradiation box with a small area for transmitting the lamp irradiation light. Can be reduced Can, therefore, a solar simulator easily and can inexpensively manufactured provided.

Further, by using a plurality of irradiation boxes formed in a small size, it is possible to cope with a case where a large irradiation range is required. It is possible to increase the size without restriction, and even in such a case, it is possible to manufacture and provide the device easily and at low cost as compared with a conventional device for realizing the same irradiation range.

[Brief description of the drawings]

FIG. 1 is a vertical side view of an example of the device of the present invention.

FIG. 2 is a side view of another example.

FIG. 3 is a cross-sectional view of an example of a conventional device.

[Explanation of symbols]

 Reference Signs List A solar cell module (measurement target) C simulated sunlight irradiation box 1 box 2 xenon lamp 3 lamp mounting bracket 4 optical filter 5, 6 reflector 7 support base for measurement target 8 irradiation range control Reflector 9 Frame 9a Frame for mounting irradiation box C 9b Support frame for A to be measured

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2G003 AA06 AC01 2G020 CB32 CB52 CB54 CC26 5F051 KA09

Claims (4)

[Claims] 1. A pseudo-light source comprising: a lamp such as a xenon lamp installed in a light-shielding box having a light-emitting surface having an area smaller than the irradiation area of the simulated sunlight, and an optical filter attached to the light-emitting surface. The irradiation box for sunlight is installed facing the object to be measured supported by the gantry, and the lamp is turned on to irradiate the object to be measured with the simulated sunlight in the irradiation range. Simulated sunlight irradiation device. 2. The simulated sunlight irradiation according to claim 1, wherein a reflection plate is appropriately disposed inside the irradiation box, and the illuminance unevenness of a lamp irradiated on the back side of the optical filter is adjusted in the irradiation box. apparatus. 3. The simulated sunlight irradiation apparatus according to claim 1, further comprising a reflection member provided outside the optical filter of the irradiation box to restrict light diffused through the filter within an irradiation range. 4. A simulated sunlight device according to claim 1, wherein a plurality of simulated sunlight irradiation boxes are arranged side by side and formed so as to irradiate an irradiation range equal to or more than a plurality of light emitting surfaces of each irradiation box. In order to make the light emitted from the lamps of each irradiation box almost uniform in the irradiation range of the simulated sunlight in which the object to be measured is arranged, by disposing an asymmetrical reflection plate with respect to each lamp described above. A simulated sunlight irradiating device, wherein each of the lamps is turned on to irradiate the entire range of the object to be measured with simulated sunlight having substantially uniform intensity.