JP3388283B2 - Weathering test equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weathering test apparatus capable of simultaneously performing various irradiation tests with light having different spectral distributions in the same test tank. [0002] In the weather resistance test of various materials and products,
By irradiating one selected type of light from the light of the specified spectral distribution consisting of the light source and the filter specified by JIS standards etc., the sample is placed on a fixed sample stage or rotated around the light source The accelerated weathering deterioration test of the sample attached to the sample holder carried on the sample holder frame was performed. Further, the present applicant has proposed a weather resistance test which can irradiate the irradiation light from the light source not only with a limited spectral distribution by a fixed filter but also with light having a different spectral distribution by using various wavelength selective filters. JP-A 1-22
No. 7945, JP-A-1-227 as a sample holder
No. 944 is disclosed. FIG. 5 is a front vertical sectional view of a main body showing an embodiment of a weather tester disclosed in Japanese Patent Application Laid-Open No. 1-227945. This device is a weather tester equipped with a light source at the upper part of the test tank and a sample stage for placing a test object below the light source. According to the embodiment, the light source has a straight tubular water-cooled type, Alternatively, an air-cooled xenon lamp is used. [0005] On the outer periphery of the light source (in this case, the entire lamp house), a filter frame for mounting filters having various transmittances is arranged. Is provided with a rotation moving mechanism for allowing the user to select any one of. [0006] By rotating the filter frame using the rotation moving mechanism, a filter having an arbitrary wavelength transmission characteristic can be selected, and an irradiation test using light of various different spectral distributions can be performed in the same test tank. is there. FIG. 6 is a perspective view of a sample holder for an accelerated light resistance tester disclosed in JP-A-1-227944. The sample holder includes a filter mounting frame having an insertion hole for a wavelength-selective filter, a lens barrel for mounting and fixing a condenser lens, and the like. If various kinds of wavelength-selective filters are arbitrarily attached to the sample holder and attached to the sample holder frame of the weathering tester, irradiation tests with various kinds of light having different spectral distributions can be performed. SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Laid-Open Publication No. 1-2
In the weather resistance tester disclosed in Japanese Patent No. 27945, the test sample is first placed on a fixed sample stage (in this publication, the sample stage itself is arranged so that the light to be irradiated is uniformly irradiated on the test object. Has a mechanism for revolving around its axis.)
The number of test samples that can be tested is small. Second, by rotating the filter frame by the rotation moving mechanism and selecting an arbitrary wavelength-selective filter, an irradiation test using light of various kinds of spectral distributions can be performed, but practically one sample can be obtained. On the other hand, the test is not performed by rotating the filter frame every predetermined time and irradiating light of various different spectral distributions. This is because, in one test, when light under various conditions was irradiated and an accelerated light resistance deterioration test was performed, what spectral distribution of light caused sample deterioration during evaluation,
This is because the cause of the deterioration cannot be pursued. Therefore,
In this apparatus, there is a problem that a test can be performed only under one irradiation condition atmosphere in one test. In the sample holder disclosed in Japanese Patent Application Laid-Open No. 1-227944, an arbitrary wavelength-selective filter is mounted on a filter mounting frame located on the light source side for each sample mounted on the sample holder. Since it can be attached, unlike the weathering tester of the above-mentioned Japanese Patent Application Laid-Open No. 1-227945, it is possible to simultaneously perform irradiation tests with various kinds of light having different spectral distributions in the same test tank. However, in order to use one wavelength selective filter for one test object, a considerable number of wavelength selective filters are required for one test apparatus. To give an example, a test device that can hold 36 sample holders with three stages in a 960 mm diameter sample frame would require a total of 1
As many as 18 wavelength-selective filters are required, and there is a problem that the mounting of the filters and the cost of parts are required. According to the present invention, it is possible to perform a test by simultaneously irradiating various kinds of light having different spectral distributions in the same test tank with simple equipment and without taking much time for test preparation. It is an object of the present invention to provide a weathering tester that can test at once. [0013] In order to achieve the above object, in the weathering light test apparatus of the present invention, first, regarding the position of a filter body composed of various types of wavelength-selective filters,
Conventionally, the light source including the lamp house is not arranged on the outer periphery, but is arranged inside the lamp house. That is, an air-cooled type used in a weather resistance test,
Alternatively, a space between a cylindrical inner filter and an outer filter of a lamp house having a double filter structure for storing a water-cooled light source (xenon arc lamp, metal halide lamp) (cooling air or cooling water for cooling the light source passes therethrough). (Space), a polygonal cylindrical filter body in which a plurality of various wavelength-selective filters equal in number to the sides of the polygon are interposed between the polygonal filter frames at both ends. Although the number of corners of the polygonal filter frame is limited by the space between the cylindrical inner filter and the outer filter, in the case of the present invention, the time required for assembling the polygonal cylindrical filter body and the wavelength-selective filter are reduced. Considering the type of test, hexagons or octagons are preferred. The light emitted from the light source is diffused by the thickness of the filter after passing through the polygonal cylindrical filter body. For this reason, there is a portion where light passing through the adjacent filters overlaps. For example, filters A having different wavelength characteristics
And filters B are arranged in parallel, and light emitted from the light source passes through each filter as A ′ and B ′, respectively.
After passing through, the light is dispersed into A ′ light, A ′ + B ′ light, and B ′ light, and an overlapping portion like A ′ + B ′ light is generated. Therefore, in order to eliminate overlapping light portions,
A metal polygonal partition plate having an upper hook and a lower hook on an upper portion, and an upper ring and a lower ring of a sample holder holding frame located on the outer periphery of the light source. A plurality of support rods were joined so that the circumference of the frame became the same as the diagonal line of the polygonal filter frame toward the center of the frame. Then, the polygonal partition plate is formed on the support rod, and the wavelength selective filter is assigned to the polygonal cylindrical filter body, in other words, in order to partition the space between the light source and the sample holder according to the assignment of the test irradiation conditions. In addition, it can be freely attached and detached. Embodiments of the present invention will be described based on embodiments with reference to the drawings. FIGS. 1 and 2 are diagrams showing a first embodiment in which a water-cooled xenon arc lamp is used as a light source. FIG. 1A shows an embodiment in which the polygonal cylindrical filter body is hexagonal, three types of wavelength selective filters are used, three types of irradiation conditions are set, and the sample holder holding frame is divided into three. The light source (1) is a water-cooled 7.5 kW xenon arc lamp, and a cylindrical inner filter (2) having an inner diameter of about 15.5 mm, a height of about 330 mm, and a thickness of about 1.5 mm is provided on the outer periphery thereof. A cylindrical outer filter (3) of about 100 mm, a height of about 240 mm, and a thickness of about 2.2 mm is provided, and a hexagonal polygon filter frame is provided between the inner filter (2) and the outer filter (3). A hexagonal polygonal cylindrical filter body (10) comprising six filters each having a size of about 40 mm in width, about 230 mm in height, and about 2 mm in thickness is arranged. Although not shown, the lower hexagonal polygonal filter frame and the lower filter mounting bracket of the lamp house, in which the light source and the filter are fixed, are used for fixing the position of the hexagonal polygonal cylindrical filter body. A guide is provided. The combination of filters in the above case is such that the inner filter and the outer filter are quartz filters, and the hexagonal polygonal cylindrical filter body (10) is 275 filters.
Three types of filters, a filter with a rise of nm, a filter with a rise of 295 nm, and a filter with a rise of 320 nm are used, each of which is divided into three. In accordance with the three divisions, three partition plates (11) are arranged between the outer filter (3) and the sample holder holding frame (4). As a result, for example, an exterior material test assuming an outdoor exposure test using a 275 nm and 295 nm rise filter, which is a weather resistance test of an automobile part material, and 3
A test of interior materials assuming an indoor exposure test with a filter with a rise of 20 nm can be performed at once in the same testing machine. However, the combination of the above-described filters is only an example, and it goes without saying that the irradiation test of light having a different spectral distribution can be performed by using various other combinations of filters. The same applies to the other embodiments of the present invention described below. As an embodiment of the present invention, a xenon arc lamp adopts a water-cooled lamp rated at 7.5 kW. , Lamp rating 1.5kW,
2.5kW, 12kW, air-cooled type, lamp rating 2.5
Some are kW. These lamps differ in the length of the arc tube, etc., but all lamps form a lamp house having a double filter structure including an inner filter and an outer filter. Therefore, the application of the present invention is also applicable to the above-mentioned lamps. it can. FIG. 1B shows an embodiment in which the polygonal cylindrical filter body is octagonal, four kinds of wavelength selective filters are used, four kinds of irradiation conditions are set, and the sample holder holding frame is divided into four parts. is there. The light source (1) is a water-cooled 7.5 kW xenon arc lamp, and has a cylindrical inner filter (2) having an inner diameter of about 15.5 mm, a height of about 330 mm, and a thickness of about 1.5 mm on its outer periphery, and an inner diameter of about 1.5 mm. A cylindrical outer filter (3) having a thickness of about 100 mm, a height of about 240 mm, and a thickness of about 2.2 mm is provided, and an octagonal polygon filter frame is provided between the inner filter (2) and the outer filter (3). An octagonal polygonal cylindrical filter body (10) comprising eight filters each having a size of about 30 mm in width, about 230 mm in height, and about 2 mm in thickness is arranged. Although not shown, the lower octagonal polygonal filter frame and the lower filter mounting bracket of the lamp house have the same octagonal polygonal filter shape as the hexagonal polygonal cylindrical filter body described above. A guide for fixing the position of the cylindrical filter body is provided. The combination of filters in the above case is such that the inner filter and the outer filter are quartz filters, and the hexagonal polygonal cylindrical filter body (10) is 275 filters.
Use two filters each for four types of filters: a filter with a rise of nm, a filter with a rise of 295 nm, a filter with a rise of 320 nm, and an infrared cut filter.
It is divided into four. According to the four divisions, four partition plates (11) are arranged between the outer filter (3) and the sample holder holding frame (4). In this embodiment, FIG.
In addition to the test in (a), an infrared cut filter enables a test in which the temperature of the black panel, which is one of the test conditions in the weather resistance test, is lowered. FIG. 1A and FIG.
When the accelerated weathering test is performed with the configuration shown in (b), the sample holder holding frame (4) is stopped without rotating. FIG. 2 is a longitudinal sectional view of a main part of this embodiment in which the light source (1) is a water-cooled xenon arc lamp and a partition plate (11) is used. Although the configuration of the light source (1) is not shown, it is composed of a lamp at the center, an inner filter, a polygonal cylindrical filter body, and an outer filter in that order as described above. The partition plate (11) is located between the light source (1) and the sample holder (5), and is connected to the upper and lower rings of the sample holder holding frame (4).
The upper hook (13) and the lower hook (14) of the partition plate (11) are hung on 2). The shape of the partition plate (11) is the same as that of the partition plate (1).
In FIG. 2, the straight line of the light source (1), the support rod (12) and the sample holder (5) are determined.
It is shaped like a pentagon because it is shaped along the three-tiered line. In FIG. 2, the light source (1) and the sample holder (5)
There is a gap in the portion, but it is preferable to make the gap as small as possible. FIGS. 3 and 4 show a second embodiment in which a vertical air-cooled metal halide lamp is used as a light source. FIG. 3A shows an embodiment in which the polygonal cylindrical filter body is hexagonal, three kinds of wavelength selective filters are used, three kinds of irradiation conditions are set, and the sample holder holding frame is divided into three parts. is there. The light source (1) is a vertical air-cooled 2.5 kW metal halide lamp, on the outer periphery of which is a cylindrical inner filter (2) having an inner diameter of about 55 mm, a height of about 260 mm, and a thickness of about 2 mm.
A cylindrical outer filter (3) having an inner diameter of about 100 mm, a height of about 265 mm, and a thickness of about 3 mm is provided, and a hexagonal polygon filter frame is provided between the inner filter (2) and the outer filter (3). , The size of one filter is about 40 width
A hexagonal polygonal cylindrical filter body (10) provided with six filters having a size of about 260 mm and a height of about 260 mm and a thickness of about 2 mm is provided. Although not shown, a guide for fixing the position of the hexagonal polygonal cylindrical filter body is provided on the lower hexagonal polygonal filter frame and the lower filter mounting bracket of the lamp house. The combination of filters in the above case is such that the inner filter and the outer filter are quartz filters, the hexagonal polygonal cylindrical filter body is a filter having a rise of 275 nm, a filter having a rise of 295 nm, and a filter having a rise of 320 nm. Each type of filter is divided into three using two filters. In accordance with the three divisions, three partition plates (11) are arranged between the outer filter (3) and the sample holder holding frame (4). FIG. 3B shows an embodiment in which the polygonal cylindrical filter body is octagonal, four kinds of wavelength selective filters are used, four kinds of irradiation conditions are set, and the sample holder holding frame is divided into four parts. is there. The light source (1) is a vertical air-cooled 2.5 kW metal halide lamp having a cylindrical inner filter (2) having an inner diameter of about 55 mm, a height of about 260 mm and a thickness of about 2 mm, and an inner diameter of about 100 mm. , Height about 265mm, thickness about 3
mm outer cylindrical filter (3) is arranged, and between the inner filter (2) and the outer filter (3),
An octagonal polygonal filter frame has a filter with a size of about 30 mm in width, about 260 mm in height, and about 2 mm in thickness.
Octagonal Polygonal Cylindrical Filter Body (10)
Is arranged. Although not shown, a guide for fixing the position of the octagonal polygonal cylindrical filter body is provided on the lower octagonal polygonal filter frame and the lower filter mounting bracket of the lamp house. The combination of filters in the above case is such that the inner filter and the outer filter are quartz filters, the hexagonal polygonal cylindrical filter body is a filter having a rise of 275 nm, a filter having a rise of 295 nm, and a filter having a rise of 295 nm.
The filter is divided into four using two filters each of four types of filters, a rising filter of 0 nm and an infrared cut filter. In accordance with the four divisions, four partition plates (11) are arranged between the outer filter (3) and the sample holder holding frame (4). When the accelerated weathering test is performed with the configuration shown in FIGS. 3A and 3B, the sample holder holding frame (4) is stopped without rotating. FIG. 4 shows that the light source (1) is a vertical air-cooled type 2.5 kW
FIG. 5 is a vertical sectional view of a main part of the present embodiment using a partition plate (11) in a metal halide lamp. Although the configuration of the light source (1) is not shown, it is composed of a lamp at the center, an inner filter, a polygonal cylindrical filter body, and an outer filter on the outer periphery in this order as described above. The partition plate (11) is located between the light source (1) and the sample holder (5), and is connected to the upper and lower rings of the sample holder holding frame (4).
The upper hook (13) and the lower hook (14) of the partition plate (11) are hung on 2). The shape of the partition plate (11) is the same as that of the partition plate (1).
In FIG. 2, the straight line of the light source (1), the support rod (12) and the sample holder (5) are determined.
It is shaped like a pentagon because it is shaped along the three-tiered line. In FIG. 4, the light source (1) and the sample holder (5)
There is a gap in the portion, but it is preferable to make the gap as small as possible. Since the present invention is configured as described above, it has the following effects. According to the present invention, a polygonal cylindrical filter body provided with various kinds of wavelength-selective filters between an inner filter and an outer filter of a lamp house, and a partition plate for partitioning a space between the light source and the sample holder are arranged. In order to achieve the effect of performing irradiation tests of several types of light having different spectral distributions at a time, a large filter frame or a filter frame rotating / moving mechanism such as a conventional weather tester disclosed in Japanese Patent Application Laid-Open No. 1-227945 has been proposed. Such a large-scale apparatus is not required, and a large amount of wavelength-selective filters is not necessary unlike the sample holder for the accelerated light resistance tester disclosed in Japanese Patent Application Laid-Open No. 1-227944. . [0048] Therefore, the material and the production cost can be greatly reduced, and the polygonal cylindrical filter body is mounted when assembling the lamp house, and the partition plate is hooked on the support rod. The time can be greatly reduced. Further, according to the present invention, there is no need to purchase a new test apparatus dedicated to the present invention for implementation, and a partition plate is attached to a weathering test apparatus having a sample holder holding frame conventionally used. Since the apparatus can be used as it is simply by additionally modifying the support rod, there is an enormous advantage for users who are currently using the weather resistance test apparatus. Furthermore, the present invention is very simple in structure, but in the same test tank that could not be achieved by the weathering tester of JP-A-1-227945, during one test time, Not only has it become possible to perform several types of irradiation tests of light having different spectral distributions at a time, but also a large number of samples can be tested.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a main part configuration diagram showing a first embodiment in which a xenon arc lamp is used as a light source. FIG. 1 (a) shows a hexagonal polygonal cylindrical filter body arranged and a test area. FIG. 3B is a view in which an octagonal polygonal cylindrical filter body is arranged and a test area is divided into four parts. FIG. 2 is a longitudinal sectional view of a main part showing a first embodiment using a xenon arc lamp as a light source. 3A and 3B are main part configuration diagrams showing a second embodiment in which a metal halide lamp is used as a light source. FIG. 3A is a diagram in which a hexagonal polygonal cylindrical filter body is arranged and a test area is divided into three parts, and FIG. FIG. 4 is a diagram in which an octagonal polygonal cylindrical filter body is arranged and a test area is divided into four parts. FIG. 4 is a longitudinal sectional view of a main part showing a second embodiment using a metal halide lamp as a light source. FIG. 5 is a front vertical sectional view of a main body showing a conventional weather tester. FIG. 6 is a perspective view showing a conventional sample holder for an accelerated light resistance tester. [Description of Signs] 1 Light source 2 Inner filter 3 Outer filter 4 Sample holder holding frame 5 Sample holder 10 Polygonal cylindrical filter body 11 Partition plate 12 Support rod 13 Upper hook 14 Lower hook 20 Test tank

Claims (1)

(57) [Claim 1] In a weathering test apparatus having a sample holder holding frame around a light source provided in a test tank, a double filter structure for storing the light source is provided. In the space between the inner filter and the outer filter of the lamp house, a polygonal cylindrical filter body in which a plurality of various wavelength selective filters having the same number of sides of the polygon are interposed between the polygonal filter frames at both ends is arranged. A plurality of supports are provided on the upper ring and the lower ring of the sample holder holding frame so that the circumference of the frame is equal to the diagonal line of the polygonal filter frame toward the center of the holding frame. A metal polygonal partition plate having an upper hook and a lower hook on the support rod; and assigning a wavelength-selective filter to the polygonal cylindrical filter body. According to When a plurality of wavelength selective filters are provided on the polygonal cylindrical filter body, the polygonal tubular filter body can be tested at a time with light having different spectral distributions in the same test tank. Characteristic weather light test equipment.