JP6069583B2 - Air exposure test equipment - Google Patents

Description

The present invention relates to an atmospheric exposure test apparatus that can be used for a shielding exposure test.
This application claims priority based on Japanese Patent Application No. 2014-078712 for which it applied to Japan on April 7, 2014, and uses the content here.

Bridges and other steel structures are required to consider the weather resistance and corrosion resistance in an open air environment.
For evaluation of these weather resistance and corrosion resistance, Japanese Industrial Standard JISZ2381 “General Rules for Atmospheric Exposure Test Methods” (Non-patent Document 1) is used.

  In a structure such as a bridge, the outer surface is exposed to sunlight or wind and rain. Therefore, it is preferable to perform evaluation by the “direct exposure test” in the above-described standards. On the other hand, the lower surface side and the inner side of the bridge girder are not easily exposed to sunlight or wind and rain, and the residual salt content on the surface of the structure affects the weather resistance. Therefore, it is preferable to perform an evaluation by a “shielding exposure test” that can avoid the influence of wind and rain that causes these residual salts to be washed away.

In the shielding exposure test, an atmospheric exposure test apparatus is used in which a subject as a test material is accommodated in an exposure container or an exposure stand having an intended shielding performance.
For example, a structure that uses a patch made of a test material as a small rectangular plate as an object, uses a housing similar to a 100-leaf box as an exposure container, and avoids the effects of wind and rain while obtaining ventilation. (Non-Patent Document 2).

Japanese Industrial Standards JISZ2381: 2001 “General Rules for Atmospheric Exposure Tests”, Japanese Standards Association “Applicability evaluation and anticorrosion preventive safety of weatherproof steel bridge”, pages 42-43, September 2009, Japan Steel Structure Association

In the aforementioned shielding exposure test, an exposure container that avoids the effects of wind and rain is used. However, depending on the climatic conditions, dew condensation may occur inside the exposure container, and this dew condensation may drip and apply to the subject.
If the adhering salt or the like on the surface of the subject is washed away by such water dripping, there is a possibility that an appropriate test result cannot be obtained. Furthermore, there is a possibility that the result of comparison with other surrounding objects is not appropriate, for example, when water dripping is limited to a specific part.

  Furthermore, in the case of structures such as bridges, it is necessary to consider the influence of wind particularly on the lower side and inside of the structure, but the conventional exposure container described above cannot reproduce the environment equivalent to structures such as bridges. It was. For this reason, it has been desired to improve performance as an exposure test so that the influence of wind on structures such as bridges can be evaluated.

  An object of the present invention is to provide an atmospheric exposure test apparatus that can eliminate the influence of condensed moisture and that can provide an exposure test environment that is closer to reality.

The present invention employs the following configuration.
(1) An atmospheric exposure test apparatus according to an aspect of the present invention includes a test piece support unit that horizontally supports a test piece, and a hood that covers an upper surface of the test piece support unit. A connecting member having a frame having a support beam, a lower step portion connected to the support beam, an upper step portion connected to the lower step portion and disposed at a position higher than the lower step portion, and the upper step portion. A test piece fixing member that extends downward and horizontally supports the test piece at a position lower than the support beam, and the height position of the lower end portion of the hood is the height of the lower end portion of the test piece. It is substantially the same as the position, and the inclination angle θ of the lower surface of the portion of the hood that overlaps the test piece when viewed in plan is 30 degrees or more.
(2) In the atmospheric exposure test apparatus according to (1) above, the inclination angle α of the lower surface of the upper stage portion of the connecting member with respect to the horizontal plane may be 5 degrees or more and 20 degrees or less.
(3) In the atmospheric exposure test apparatus according to (1) or (2), the connecting member may have an upright portion that rises from at least a part of the periphery of the upper step portion and the lower step portion.
(4) In the atmospheric exposure test apparatus according to any one of (1) to (3), the frame includes a pair of support girders provided to face each other, and the support girders are provided with the support girders. The test piece fixing member may be connected via a connecting member, and the test piece may be horizontally supported by the pair of test piece fixing members.
(5) In the atmospheric exposure test apparatus according to any one of (1) to (4), the inclination angle θ may be 45 degrees or less.
(6) In the atmospheric exposure test apparatus according to any one of (1) to (5), the hood is any one of a cone shape, a pyramid shape, a ridge roof shape, a gable roof shape, and a single-flow roof shape. It may be.

  According to the atmospheric exposure test apparatus according to the above aspect of the present invention, it is possible to eliminate the influence of condensed moisture and to obtain an exposure test environment that is closer to the actual situation.

It is a perspective view which shows the atmospheric exposure test apparatus 1 which concerns on one Embodiment of this invention. It is a schematic diagram which shows the inside of the atmospheric exposure test apparatus 1 which concerns on the same embodiment. It is a top view which shows the state except a part of food | hood 20 of the atmospheric exposure test apparatus 1 which concerns on the same embodiment. It is sectional drawing containing the test piece support unit 10 and the test piece 40 of the atmospheric exposure test apparatus 1 which concern on the embodiment. It is a disassembled perspective view which shows the principal part of the test piece support unit 10 of the atmospheric exposure test apparatus 1 which concerns on the same embodiment. It is a perspective view which shows the gable roof-shaped food | hood 20 of the atmospheric exposure test apparatus 1 which concerns on the same embodiment. FIG. 6 is a perspective view showing a ridge roof-shaped hood 20B that is a modification of the hood 20; It is a perspective view which shows the hood 20C of the single flow roof shape which is a modification of the hood 20. As shown in FIG. FIG. 6 is a perspective view showing a quadrangular pyramid-shaped hood 20D that is a modification of the hood 20; It is a perspective view which shows the cone-shaped food | hood 20E which is a modification of the food | hood 20. As shown in FIG. It is a perspective view which shows the hemispherical food | hood 20F which is a modification of the food | hood 20. As shown in FIG. It is a perspective view which shows hemispherical food | hood 20G extended vertically which is a modification of the food | hood 20. As shown in FIG. FIG. 6 is a perspective view showing a semi-cylindrical hood 20H that is a modified example of the hood 20. It is a perspective view which shows the hood 20I of the shape which connected the quarter sphere (the shape of the quarter of a sphere) to the both ends of the half cylinder of FIG. FIG. 4 is a schematic view showing an aspect in which another test piece 50 is further attached to the test piece support unit 10. 6 is a side view showing a modified example of the test piece 40. FIG. It is sectional drawing which shows the aspect which supports a test piece horizontally with a pair of support girder 112 which mutually opposes.

Hereinafter, an atmospheric exposure test apparatus 1 according to an embodiment of the present invention will be described with reference to the drawings.
The atmospheric exposure test apparatus 1 according to the present embodiment is an apparatus for performing a shielding exposure test. As shown in FIGS. 1 to 3, a test piece support unit 10 that horizontally supports a test piece 40, and this test And a hood 20 that covers the upper surface of the single support unit 10.
In the atmospheric exposure test apparatus 1, for example, an extremely thin material or an ultrafine material having a thickness or a diameter of 10 μm to 500 μm is used as the test piece 40, so that the evaluation of perforation of the ultrathin material and the cutting of the ultrafine material can be performed. It is also possible to perform evaluation or comparative evaluation with different materials installed at the same time. Further, the material of the test piece 40 is not limited to iron, and other materials that cause corrosion problems such as other metals and concrete can be used.

As shown in FIG. 1, the hood 20 is formed in a gable roof shape. That is, the hood 20 has a pair of inclined surfaces 21, a side surface 22 that hangs down from the lower edge thereof, and an intersecting surface (wife surface) 23 that intersects the inclined surface 21 and the side surface 22.
These inclined surface 21, side surface 22, and intersecting surface 23 are each formed of a steel plate, and surfaces are formed and joined by bending, welding, and rivets.
Of the hood 20, when viewed in plan, the lower surface of the inclined surface 21 that overlaps the test piece 40, that is, the inner surface facing the test piece 40 has an inclination angle θ of 30 degrees or more with respect to the horizontal plane.

  Supports 24 are attached to the side surface 22 in the vicinity of both ends thereof. The support column 24 is formed of a steel pipe and is fixed to the side surface 22 by a U-shaped fixing bracket 241. The fixing bracket 241 has a pair of tips inserted into a pair of holes formed in the side surface 22 and protrudes to the inside of the side surface 22, and a nut 242 is screwed into each.

  Accordingly, by tightening the nut 242 inside the side surface 22, the fixing bracket 241 tightens the support column 24 to the side surface 22, thereby fixing the support column 24. In addition, by loosening the nut 242, the tightening fixing position of the column 24, that is, the height position of the hood 20 can be changed.

  A fixed plate 25 is fixed to the lower end of the column 24 by welding. The fixed plate 25 is formed of a steel plate, and fixed holes are formed at the four corners. The support column 24 is placed on the foundation by the fixing plate 25, and can be prevented from inadvertently moving even in a strong wind by tightening and fixing with a bolt or the like (not shown) embedded in the foundation.

  As shown in FIGS. 2 to 5, the test piece support unit 10 includes a frame 11, a connecting member 13, and a test piece fixing member 15.

  The frame 11 is formed by spanning a support beam 112 over a pair of main beams 111. The main girder 111 and the support girder 112 are each formed of a steel material having an L-shaped section or a C-shaped section. As shown in FIGS. 1 to 3, both ends of the main beam 111 are fixed to the inner surface of the side surface 22 of the hood 20. Thereby, the frame 11 is held horizontally along the opening surface on the lower surface side of the hood 20, and the upper surface side thereof is covered with the hood 20.

  As shown in FIGS. 3 to 5, the support beam 112 has a lower surface portion 112 </ b> A and an upper surface portion 112 </ b> B that stands upright from the lower surface portion 112 </ b> A, with a predetermined interval in the extending direction (longitudinal direction). A plurality of connecting members 13 are attached.

The connecting member 13 is formed of a steel plate and has a crank-shaped side surface shape as shown in FIGS. More specifically, the connecting member 13 is connected to the lower step portion 13A connected by the bolt 131 and the nut 132 on the lower surface portion 112A of the support beam 112 of the frame 11, and is connected to the lower step portion 13A and more than the lower step portion 13A. And an upper step portion 13B disposed at a high position.
In the present embodiment, the connecting member 13 is formed with an upright portion 13C that rises upward from the periphery of the lower step portion 13A and the upper step portion 13B except for the tip of the lower step portion 13A. Further, the upper step portion 13B of the connecting member 13 is inclined by a slight inclination angle α with respect to the horizontal plane (or the lower step portion 13A), and the side away from the lower step portion 13A is formed high.

A test piece 40 is supported on the lower surface side of the upper stage portion 13B via a test piece fixing member 15 extending in the vertical direction.
The test piece fixing member 15 includes a spacer 15A, a bolt 15B, and a nut 15C.
The spacer 15 </ b> A extends downward from the upper step portion 13 </ b> B of the connecting member 13 and horizontally supports the test piece 40 at a position lower than the support beam 112.
The spacer 15A is a hollow cylindrical member, and the bolt 15B is inserted through the hole formed in the upper step portion 13B of the connecting member 13, the hollow portion of the spacer 15A, and the hole formed in the test piece 40, and the lower end of the bolt 15B. It is fixed by screwing the nut 15C into the nut.

As shown in FIG. 4, the test piece 40 includes a plastic plate-like base material 42 fixed by the test piece fixing member 15, and a thin plate (for example, 3 mm) of a test material attached to the front and back of the base material 42. ˜5 mm).
As the base material 42, for example, a plate material made of an insulating material which is hardly corroded, such as vinyl chloride resin or FRP (fiber reinforced plastic) is used.

  As shown in FIG. 4, the test piece 40 is held at a position where the surface of the test patch 41 on the lower surface side is substantially the same as the height of the opening surface on the lower surface side of the hood 20. Further, the surface of the test patch 41 on the upper surface side is held below the lower surface portion 112 </ b> A of the support beam 112.

In this embodiment, the atmospheric exposure test is performed by the following procedure.
First, a test piece 40 having a test patch 41 for a desired test material is supported by the test piece support unit 10. Next, the atmospheric exposure test apparatus 1 to which the test piece 40 is attached is carried into the test place and installed in a state where the test piece 40 is erected by the support column 24.
In this state, an air exposure test is performed over a predetermined period. When the test period ends, the air exposure test apparatus 1 is collected, transported to an analysis place, and analyzed.

Such an embodiment has the following effects.
The test piece 40 supported by the test piece support unit 10 is covered with the hood 20 and can be used as a shielding exposure test.
At this time, the lower surface of the portion of the hood 20 that overlaps with the test piece 40 in plan view, that is, the inner surface facing the test piece 40 has an inclination angle θ with respect to the horizontal plane of 30 degrees or more. For this reason, even if dew condensation occurs on the lower surface of the inclined surface 21 during the atmospheric exposure test, and the water droplet grows and reaches a size that drops, the water droplet flows down along the inclined lower surface. Therefore, even if condensation occurs on the lower surface of the hood 20, it can be prevented from dripping as water droplets, and the influence of condensed moisture on the test piece 40 can be eliminated.
In addition, if the inclination angle θ with respect to the horizontal plane is 30 degrees or more, even when the distortion occurs during the manufacture of the hood 20, or when the deflection occurs due to its own weight or environmental change (temperature change) after the hood 20 is installed, Condensation generated on the lower surface of the hood 20 can be prevented from dripping as water droplets, and the influence of condensed moisture on the test piece 40 can be eliminated.
The inclination angle θ with respect to the horizontal plane is preferably 33 degrees or more, and more preferably 35 degrees or more.
On the other hand, even if the inclination angle θ with respect to the horizontal plane exceeds 45 degrees, the above effect is saturated and the manufacturing cost increases more than necessary. Therefore, the inclination angle θ of the lower surface of the hood 20 with respect to the horizontal plane may be 45 degrees or less.

  In the present embodiment, since the hood 20 has a gable roof shape, the entire lower surface side of the pair of inclined surfaces 21 can be inclined at 30 degrees or more with respect to the horizontal plane. Moreover, the gable roof shape is a shape in which a pair of inclined surfaces 21 are joined by a central ridgeline, and can be a simple structure.

In the present embodiment, the test piece 40 can be supported horizontally, and the surface of the test patch 41 on the lower surface side of the test piece 40 is disposed substantially the same as the height of the lower end of the hood 20, that is, the lower surface side opening surface. Can do. With such an arrangement, the test piece 40 of the present embodiment can be exposed to a rain and rain exposure environment similar to the lower flange of a bridge using H steel, and an exposure test environment closer to the actual can be obtained.
In addition, the influence of the cross wind at the height position of the lower end of the hood 20 becomes smaller from the plan view end of the hood 20 toward the plan view central portion of the hood 20. For example, when the planar dimension of the hood 20 is 1000 mm × 1000 mm, the height position of the surface of the test patch 41 on the lower surface side of the test piece 40 disposed in the center of the hood 20 in plan view is the height of the lower end of the hood 20. There may be a height difference up to about ± 30 mm from the vertical position. Therefore, “the height position of the lower end portion of the hood 20 is substantially the same as the height position of the test piece 40” is strictly based on the lower end portion of the hood 20 with respect to the horizontal plane including the lower end portion of the hood 20. As long as the surface of the test patch 41 on the lower surface side of the test piece 40 is included in the region sandwiched between the surfaces having an inclination of ± 6% or less.

In the present embodiment, the test piece 40 is supported by the support beam 112 of the frame 11 via the connecting member 13 and the test piece fixing member 15. Therefore, the position of the test piece 40 can be appropriately selected regardless of the mechanical configuration of the frame 11 by appropriately adjusting the shape of the connecting member 13 or the test piece fixing member 15.
In particular, in the present embodiment, the horizontally supported test piece 40 is supported at a position lower than the frame 11 so that the wind blown to the test piece 40 during the test can be directly received, and the hood 20 and the frame. 11 can be avoided. Therefore, an exposure test environment that is closer to reality can be obtained.

  In the present embodiment, the upper step portion 13 </ b> B of the connecting member 13 that supports the horizontal test piece 40 is installed at a position higher than the lower step portion 13 </ b> A connected to the frame 11. For this reason, even if water droplets due to condensation occur on the connecting member 13 or the frame 11, the water droplets can be prevented from flowing toward the test piece 40.

In particular, when the upright portion 13C is formed around the connection member 13, in addition to increasing the rigidity of the connection member 13, even if dew condensation occurs on the upper surface of the upper step portion 13B of the connection member 13, it falls to the test piece 40. Can be prevented, and can flow down to the lower side where the upright portion 13C is open.
Furthermore, when the upper stage portion 13B of the connecting member 13 is arranged with an inclination angle α with respect to the horizontal, it is possible to promote the outflow of water droplets to the lower stage portion 13A. In order to obtain this effect, the inclination angle α is preferably set to 5 degrees or more, and more preferably set to 7 degrees or more. On the other hand, since the above effect is saturated even if the inclination angle α exceeds 20 degrees, the inclination angle α may be 20 degrees or less.

  As mentioned above, although the atmospheric exposure test apparatus 1 which concerns on one Embodiment of this invention with reference to FIGS. 1-5 was demonstrated, this invention is not limited only to embodiment mentioned above, The objective of this invention is demonstrated. Variations that can be achieved are included in the present invention.

As shown to FIG. 6A, in the atmospheric exposure test apparatus 1 which concerns on embodiment mentioned above, the gable roof-shaped food | hood 20 is used, and the inclination | tilt angle with respect to the horizontal surface of the lower surface side of a pair of inclined surface 21 is 30 degree | times or more. On the other hand, in the present invention, a ridge roof-shaped hood 20B, a single-flow roof-shaped hood 20C, a quadrangular pyramid-shaped hood 20D, and a conical hood 20E as shown in FIGS. 6B to 6E may be used. .
The gable roof shape is a shape in which a pair of inclined surfaces are joined by a central ridgeline, and the dormitory roof shape has a total of four inclined surfaces formed on each crossing surface of the gable roof shape described above. It is a shape having an inclined surface, and the single-flow roof shape is a shape composed of only one inclined surface.

In FIG. 6B, the hood 20B is formed in the shape of a roof, and the two pairs of inclined surfaces 21A and 21B each have an inclination angle of 30 degrees or more with respect to the horizontal surface on the lower surface side.
In FIG. 6C, the hood 20C is formed in a single-flow roof shape, and the single inclined surface 21C has an inclination angle of 30 degrees or more with respect to the horizontal surface on the lower surface side.
6D, the hood 20D is formed in a quadrangular pyramid shape, and each of the four inclined surfaces 21D has an inclination angle of 30 degrees or more with respect to the horizontal surface on the lower surface side.
In FIG. 6E, the hood 20E is formed in a conical shape, and the inclined surface 21E has an inclination angle of 30 degrees or more with respect to the horizontal surface on the lower surface side.

Furthermore, in this invention, you may use the food | hood 20F-20I of the modified example shown to FIGS. 6F-6I.
FIG. 6F shows a hemispherical hood 20F. The inner surface 21F has an inclination angle of 30 degrees or more with respect to the horizontal plane, except for a partial region near the apex.
FIG. 6G shows a hemispherical hood 20G stretched vertically. The inner side surface 21G has an inclination angle of 30 degrees or more with respect to the horizontal plane except for a partial region near the apex.
FIG. 6H shows a semi-cylindrical hood 20H. The inner side surface 21H has an inclination angle of 30 degrees or more with respect to the horizontal plane except for a partial region near the top ridge line.
FIG. 6I shows a hood 20I having a shape in which a quarter hemisphere (a quarter shape of a sphere) is connected to both ends of the half cylinder of FIG. 6H. The inner side surface 21I has an inclination angle of 30 degrees or more with respect to the horizontal plane except for a partial region near the top ridgeline.

In the hoods 20F to 20I of the above-described modified examples, the hoods 20F to 20I include portions where the inclination angle with respect to the horizontal surface on the lower surface side of each hood is less than 30 degrees. Therefore, it is preferable not to install the test piece directly below the portion of the hood where the inclination angle with respect to the horizontal surface on the lower surface side is less than 30 degrees.
In other words, the inclination angle θ of the lower surface of the portion of the hood that overlaps with the test piece when viewed in plan may be 30 degrees or more.
6F to 6I, in the case of a hood including a curved surface, the inclination angle of the lower surface with respect to the horizontal plane means an angle formed with the tangential horizontal plane of each part of the hood.

In the atmospheric exposure test apparatus 1 according to the above-described embodiment, only the test piece 40 that is horizontally supported is attached to the test piece support unit 10 as shown in FIG.
On the other hand, as shown in FIG. 7, in addition to the test piece 40 supported horizontally, another test piece 50 installed in the vertical direction may be further attached to the test piece support unit 10. Similar to the test piece 40, the other test piece 50 is obtained by attaching a test patch, which is a thin plate of a test material, to the front and back of a plastic substrate.
Even in such a configuration, it is possible to obtain the same effect as that of the above-described embodiment of FIG. 1 by adding the test result by the other test piece 50 installed in the vertical direction.

Moreover, in the atmospheric exposure test apparatus 1 which concerns on embodiment mentioned above, what showed the emblem 41 for a test on the base material 42 was used as the test piece 40, as shown in FIG. On the other hand, in the present invention, as shown in FIG. 8, the base material 42 itself may be formed of a test material and the test patch 41 may be omitted.
Even in such a configuration, the exposure test can be performed on the surface of the base material 42 formed of the test material in the same manner as in the case where the atmospheric exposure test apparatus 1 according to the embodiment of FIG. 1 described above is used.

  Furthermore, in the atmospheric exposure test apparatus 1 according to the above-described embodiment, the single hood 20 is used. However, another cover that covers the outside of the hood 20 may be further installed, or may be duplicated, or around the hood 20. Another fence or the like may be installed to adjust the crosswind.

  Furthermore, in the atmospheric exposure test apparatus 1 according to the above-described embodiment, the test piece fixing member 15 is used as a separate member from the connecting member 13 and the test piece 40. It may be formed integrally with the test piece 40.

FIG. 9 shows another embodiment of the present invention.
In the atmospheric exposure test apparatus 1 according to the above-described embodiment, the test piece fixing member 15 and the connecting member 13 are connected to one end of the test piece 40 and supported by the support beam 112, and the test piece 40 is a so-called cantilever lever. It was in a state. For this reason, the cantilever lever may vibrate due to strong winds.
On the other hand, in the embodiment shown in FIG. 9, the test piece 40 is horizontally supported by the test piece support unit 10 </ b> A having the pair of support girders 112 provided facing each other, that is, By supporting the test piece 40 across the pair of frames 11, the possibility of vibration as described above can be greatly reduced.

  In FIG. 9, in the test piece support unit 10A, two support beams 112 are installed back to back so that the upper surface portions 112B of the support beams 112 face each other, and the lower surface portions 112A of the support beams 112 protrude on both sides. And between the adjacent support girders 112, the lower surface portions 112A are arranged to face each other.

The test piece fixing member 15 is provided on the facing lower surface portion 112 </ b> A via the connecting member 13, and the test piece 40 is horizontally supported between the pair of test piece fixing members 15.
The test piece 40 is configured so that the test piece fixing member 15 can be connected to both ends of the base material 42. Test patches 41 are attached to the front and back surfaces of the base material 42, respectively.

In this embodiment, the same effects as those of the embodiment of FIG. 1 described above can be obtained, and the following effects can be obtained.
That is, in this embodiment, the test piece 40 is supported by the pair of support girders 112 at both ends. For this reason, for example, rocking hardly occurs as in the case of being supported in a cantilever state, and the influence on the test result due to vibration or the like can be avoided even when exposed to a strong wind.

  ADVANTAGE OF THE INVENTION According to this invention, the atmospheric exposure test apparatus which can be utilized for shielding exposure tests, such as steel materials used for structures, such as a bridge, can be provided.

1: Atmospheric exposure test apparatus 10, 10A: Test piece support unit 11: Frame 111: Main beam 112: Support beam 112A: Lower surface portion 112B: Upper surface portion 13: Connecting member 13A: Lower step portion 13B: Upper step portion 13C: Standing portion 131 : Bolt 132: Nut 15: Test piece fixing member 15A: Spacer 15B: Bolt 15C: Nut 20, 20B-20I: Hood 21, 21A-21I: Inclined surface 22: Side surface 23: Crossing surface (wife surface)
24: support 241: fixing bracket 242: nut 25: fixing plate 40: test piece 41: test patch 42: base material 50: other test piece α: inclination angle of the upper step of the connecting member θ: inclination of the lower surface of the hood angle

Claims (6)

A specimen support unit that horizontally supports the specimen;
A hood that covers an upper surface of the test piece support unit;
With
The test piece support unit is:
A frame having support girders;
A connecting member having a lower step connected to the support beam and an upper step connected to the lower step and disposed at a position higher than the lower step;
A test piece fixing member that extends downward from the upper stage portion and horizontally supports the test piece at a position lower than the support beam;
With
The height position of the lower end portion of the hood is substantially the same as the height position of the lower end portion of the test piece,
An atmospheric exposure test apparatus, wherein an inclination angle θ of a lower surface of a portion of the hood that overlaps with the test piece in a plan view with respect to a horizontal plane is 30 degrees or more. 2. The atmospheric exposure test apparatus according to claim 1, wherein an inclination angle α of the lower surface of the upper step portion of the connecting member with respect to a horizontal plane is 5 degrees or more and 20 degrees or less. The atmospheric exposure test apparatus according to claim 1, wherein the connecting member has an upright portion that rises from at least a part of a peripheral edge of the upper step portion and the lower step portion. The frame has a pair of support girders provided opposite to each other, and the test piece fixing member is connected to each of the support girders via the connecting member, and the test piece is the pair of test pieces. The atmospheric exposure test apparatus according to any one of claims 1 to 3, wherein the atmospheric exposure test apparatus is supported horizontally by a fixing member. The atmospheric exposure test apparatus according to claim 1, wherein the inclination angle θ is 45 degrees or less. The atmospheric exposure test apparatus according to any one of claims 1 to 5, wherein the hood is any one of a cone shape, a pyramid shape, a ridge roof shape, a gable roof shape, and a single-flow roof shape. .

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