JP2008164424A - Environmental test device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform various environmental tests without having to replace an environmental test device as a whole. <P>SOLUTION: This environmental test device 100 comprises a case body 12, having a gas-adjusting chamber 25 storing a temperature/humidity-regulating means, and a cover 15, constituting a laboratory 14 for storing a body to be tested 9 adjacent to the gas-adjusting chamber 25. The case body 12 is provided with through holes 51 and 52, through which the gas adjustment chamber 25 communicates with the laboratory 14. The cover 15 can be removed from the case body 12. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an environmental test apparatus that changes the ambient environment of a device under test to a predetermined condition.

  In Patent Document 1, an environmental tester (environment tester) having a test chamber for storing a sample (test object) and conducting an environmental test, and an air flow path (gas control chamber) for supplying constant temperature and humidity air to the test chamber. Test apparatus). In this environmental tester, two openings (outflow holes and inflow holes) are provided between the test chamber and the air flow path. The air flow path has a blower, an air heater, a dehumidifying cooler, and a humidifier. The blower is attached to one opening of the air flow path. And inflow air flows through an air channel from the other opening of an air channel. At this time, the inflow air is sucked into the blower while being heated by the heater, dehumidified and cooled by the dehumidifying cooler, or humidified by the humidifier, and supplied as constant temperature and humidity air to the test chamber.

  Patent Document 2 describes a thermostat (environment test chamber) including a thermostatic chamber (test chamber) that performs an environmental test of a device under test (test object). In the thermostatic chamber of this thermostatic device, a blower, a heater, a cooler, a dehumidifier, and a humidifier are provided. The temperature and humidity of the air circulated in the temperature-controlled room by the blower are adjusted accordingly.

JP 2003-279083 A (FIG. 1) JP-A-2-89974 (FIG. 1)

  However, in the environmental test apparatus described in Patent Document 1 described above, the test chamber and the gas control chamber are an integral housing. For this reason, for example, when conducting an environmental test on test pieces of various sizes, it is necessary to enlarge the test room if the test piece is too large to be accommodated in the test room of the environmental test apparatus being used. However, since the test chamber and the gas adjustment chamber are an integral housing, it is not possible to enlarge only the test chamber. As a result, it is necessary to replace the entire environmental test apparatus. Further, if the test chamber and the gas adjustment chamber are integrated into a single housing, it is necessary to replace the entire environmental test apparatus for each of various environmental conditions for the device under test.

  Moreover, in the environmental test apparatus described in Patent Document 2 described above, since a blower, a heater, a cooler, a dehumidifier, and a humidifier are provided in a test chamber that performs an environmental test of a device under test, It is necessary to replace the entire environmental test apparatus for each of various environmental conditions for the specimen.

  Therefore, an object of the present invention is to provide an environmental test apparatus that can perform various environmental tests without replacing the entire environmental test apparatus.

  An environmental test apparatus according to the present invention is an environmental test apparatus that changes the ambient conditions of a device under test to a predetermined condition, a temperature / humidity adjusting means for changing the temperature / humidity of a gas, and a gas control chamber provided with the temperature / humidity adjusting means. And a housing having an outflow hole through which the gas adjusted by the temperature / humidity adjusting means flows out and an inflow hole through which the gas adjusted by the temperature / humidity adjusting means flows into the gas adjusting chamber, and A device under test that is detachable from the body and is attached to the housing while covering the device under test, the inflow hole, and the outflow hole, and is adjacent to the gas regulation chamber that is in communication with the inflow hole and the outflow hole And a cover constituting a test chamber for housing the body.

  According to this, since the test room is configured by attaching a cover to the housing, various environmental tests can be performed simply by replacing various covers with the common housing without changing the entire environmental test apparatus. Become a device. Further, since the cover can be removed from the housing, maintenance of the environmental test apparatus is facilitated.

  In the present invention, the cover is detachably provided on a ceiling portion of the test chamber, an annular wall portion extending in a height direction from the ceiling portion, and an end portion of the annular wall portion on the housing side. It is preferable to have an annular height adjusting member. As a result, the height of the test chamber changes between when the cover is attached to the housing with the height adjustment member removed and when the cover is attached to the housing with the height adjustment member attached. . Therefore, it becomes possible to adjust the height of the test chamber to two or more stages.

  In the present invention, the cover includes a ceiling portion of the test chamber and an annular wall portion extending in a height direction from the ceiling portion, and the annular wall portion is an outer periphery of the casing. It is preferably supported so as to be slidable in the height direction along the surface or the inner peripheral surface. As a result, the height of the test chamber can be made variable and can be finely adjusted.

  In the present invention, the cover may extend along the ceiling portion of the test chamber, the first annular wall portion extending in the height direction from the ceiling portion, and the outer peripheral surface or inner peripheral surface of the housing. A second annular wall portion slidably supported in the height direction, and the first annular wall portion has a height along an outer peripheral surface or an inner peripheral surface of the second annular wall portion. It is preferably supported so as to be slidable in the vertical direction. Thereby, the variable length of the height of the test chamber can be further increased and fine adjustment can be performed.

  In the present invention, the cover includes a first surrounding member that covers the outflow hole, a second surrounding member that covers the inflow hole, and a cylindrical member that communicates the first and second surrounding members. It is preferable that the cross-sectional area in the direction orthogonal to the air flow direction of the cylindrical member is smaller than the cross-sectional area in the direction orthogonal to the air flow direction in each surrounding member. Thereby, the speed of the gas that passes through the cylindrical member can be made higher than the speed of the gas that passes through the first surrounding member and the second surrounding member.

  In the present invention, the first communication member includes at least two of the housings, and the cover communicates the outflow hole of the one housing with the inflow hole of the other housing. A second communication member that includes the first communication member and communicates the inflow hole of one of the housings with the outflow hole of the other of the housings. It is preferable that the cross-sectional area in the direction orthogonal to the airflow direction of the communication member is smaller than the cross-sectional area in the direction orthogonal to the airflow direction of the second communication member. Thereby, even if it uses the same 2 housing | casing, the speed of the gas which passes a 1st communicating member can be made to raise rather than the speed of the gas which passes a 2nd communicating member.

  In the present invention, at least two casings adjacent to each other are provided, and the cover includes a first region communicating with the outflow hole and the inflow hole of one of the casings, and the other casing. It is preferable to have a partition wall for partitioning the test chamber in the outflow hole of the body and the second region communicating with the inflow hole. Thereby, since the conditions of the 1st field and the 2nd field can be kept in a different state, a test of two kinds of conditions can be performed with one cover.

  Further, at this time, the partition wall is formed with a through hole that allows the first region and the second region to communicate with each other, and the first region and the second region communicate with each other. Opening / closing means for opening and closing the through-hole may be provided so that a communication state and a non-communication state where the first region and the second region do not communicate can be obtained. Accordingly, the device under test can be moved through the through-hole without removing the cover from the two housings, and the first region and the second region can be provided by providing the opening / closing means. It becomes possible to maintain the area conditions.

<First Embodiment>
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

  FIG. 1 is a schematic sectional view of an environmental test apparatus according to a first embodiment of the present invention. FIG. 2 is a plan view of the environmental test apparatus according to the first embodiment of the present invention with the cover 15 removed. As shown in FIG. 1, the environmental test apparatus 100 is attached to the upper surface of the housing 12 so as to cover the upper surface of the housing 12 and a metal housing 12 having a gas regulating chamber 25 (described later) inside. Cover 15 is included.

  The cover 15 includes an upper cover 60 and three adjustment covers 61 (height adjustment members) provided in the height direction. The cover 15 forms a test chamber 14 that surrounds the device under test 9 with the ceiling 22 of the housing 12 when attached to the housing 12. A method of configuring the cover 15 by the upper cover 60 and the three adjustment covers 61 will be described later.

  The upper cover 60 has a ceiling 20 (ceiling part) and a side wall 24 (annular wall part). The side wall 24 has a hollow prism shape and is closed at the top by the ceiling 20. A convex portion 24 a protruding downward is formed at the lower portion of the side wall 24. The convex portion 24 a is fitted with a concave portion 61 a (described later) formed on the upper portion of the adjustment cover 61. Since the material of the upper cover 60 is made of polystyrene foam and is easy to process, it is possible to provide openings and cable holes by making holes at appropriate positions. The upper cover 60 in the present embodiment is made of polystyrene foam having excellent heat insulation and easy processing, but glass, antibacterial copper and silver, and stainless steel having a rust preventive action so that the test state can be observed. Any other material that can realize the required action can be selected. In the case of using the DUT 9 in which the inside of the test chamber 14 is easily contaminated, the upper cover 60 may be made of a disposable disposable material. Depending on the purpose of the test, it may be made of a material that can transmit radio waves or a material that blocks radio waves, and other materials that meet test conditions and purposes can be selected.

  The adjustment cover 61 has a hollow prismatic shape, and a concave portion 61a is formed in the upper portion, and a convex portion 61b is formed in the lower portion. The adjustment cover 61 is detachable between the upper cover 60 and a ceiling 22 (described later) constituting the housing 12. Since the material of the adjustment cover 61 is made of polystyrene foam and is easy to process, it is possible to provide openings and cable holes by opening holes at appropriate positions. The adjustment cover 61 in the present embodiment is made of foamed polystyrene that is excellent in heat insulation and easy to process, like the upper cover 60, but glass, antibacterial copper and silver, and so that the test state can be observed, and It may be made of any material such as stainless steel having a rust preventive action, and other materials capable of realizing the required action can be selected. In the case of using the DUT 9 in which the inside of the test chamber 14 is easily contaminated, the adjustment cover 61 may be made of a disposable disposable material. Depending on the purpose of the test, it may be made of a material that can transmit radio waves or a material that blocks radio waves, and other materials that meet test conditions and purposes can be selected.

  Here, a method of configuring the cover 15 by the upper cover 60 and the three adjustment covers 61 will be described. First, the convex portion 61b of the first adjustment cover 61 and the concave portion 22a of the ceiling 22 are fitted. And the convex part 61b of the 2nd adjustment cover 61 and the recessed part 61a of the 1st adjustment cover 61 are fitted. Next, the convex portion 61b of the third adjustment cover 61 and the concave portion 61a of the second adjustment cover 61 are fitted. Finally, the convex portion 24a of the upper cover 60 and the concave portion 61a of the third adjustment cover 61 are fitted. Thus, the cover 15 is constituted by the upper cover 60 and the three adjustment covers 61, and the test chamber 14 is constituted by the ceiling 22 of the housing 12.

  The housing 12 includes a hollow, prismatic side wall 21, and a ceiling 22 and a floor 23 provided on the upper and lower surfaces of the side wall 21. And the housing | casing 12 is provided with the heater 33 and the humidifier 34 in the gas control chamber 25 enclosed by the side wall 21, the ceiling 22, and the floor 23. FIG. In addition, the housing 12 is provided with a heat pipe 31 and a Peltier element 32 serving as dehumidifying and cooling means. The heat pipe 31, the Peltier element 32, the heater 33, and the humidifier 34 constitute temperature / humidity adjusting means for adjusting the temperature / humidity of the air in the gas control chamber 25 to a predetermined temperature / humidity.

  The heat pipe 31 passes through the side wall 21 and is fixed to the side wall 21, and one end is disposed in the gas control chamber 25 and the other end is disposed outside the gas control chamber 25. A heat absorbing fin 71 is fixed to one end of the heat pipe 31 and inside the gas regulating chamber 25. Thereby, the air in the gas control chamber 25 can be effectively absorbed and dehumidified. On the other hand, a Peltier element 32 is fixed to the other end of the heat pipe 31.

  The Peltier element 32 is disposed outside the gas control chamber 25, the heat pipe 31 is fixed to one surface 32a, and the heat radiation fins 72 are fixed to the other surface 32b. The Peltier element 32 cools and dehumidifies the air in the gas regulation chamber 25 through the heat pipe 31 and the heat absorption fins 71 when one of the surfaces 32a is cooled by a current supplied by control from a control device (not shown). . At this time, the other surface 32b of the Peltier element 32 generates heat, but since the heat radiating fins 72 and the heat absorption fan (not shown) are fixed to the other surface 32b, heat generation from the Peltier element 32 is effectively performed. Heat can be dissipated. Thereby, it becomes possible to cool and dehumidify the gas regulation chamber 25 effectively. When the Peltier element 32 is not operating, the heat transfer of the heat pipe 31 is stopped and heat insulation is maintained. On the other hand, the heater 33 heats the air in the gas control chamber 25 under the control of a control device (not shown). The humidifier 34 humidifies the air in the gas control chamber 25 under the control of a control device (not shown).

  A concave portion 22 a is formed at the peripheral end portion of the upper surface of the ceiling 22. The concave portion 22 a is fitted with a convex portion 61 b formed at the lower portion of the adjustment cover 61. In addition, as shown in FIG. 2, two through holes 51 (outflow holes) and 52 (inflow holes) that connect the gas control chamber 25 and the test chamber 14 are formed in the ceiling 22. These through holes 51 and 52 are arranged in a rectangular shape at both the left and right ends in FIG. 2 inside the inner peripheral surface of the side wall 21. The two through holes 51 and 52 are provided with metal meshes 53 and 54 covering the respective openings. The metal meshes 53 and 54 are formed by intersecting a plurality of metal wires so as to have a plurality of mesh openings. These metal meshes 53 and 54 suppress electromagnetic waves generated mainly from the heater 33 and the humidifier 34 from entering the test chamber 14 through the through holes 51 and 52. That is, the housing 12 is made of metal and has an electromagnetic shield structure in which the openings of the through holes 51 and 52 are closed with the metal meshes 53 and 54. If the housing 12 does not need to have an electromagnetic shield structure, the metal meshes 53 and 54 may be omitted. The housing 12 is not made of metal, and may be made of any material such as resin.

  Returning to FIG. 1, the gas regulating chamber 25 is provided with a blower 19. The blower 19 has a motor 42. When the motor 42 is driven by control from a control device (not shown), the blower 19 sucks the air in the gas control chamber 25 and discharges it toward the test chamber 14. In the blower 19, a discharge port 18 that discharges air from the gas control chamber 25 is formed at a position facing the through hole 51. Therefore, the air in the gas control chamber 25 adjusted to a predetermined temperature and humidity by the heat pipe 31, the Peltier element 32, the heater 33, and the humidifier 34 can be effectively supplied to the test chamber 14. The air is forcibly sent into the test chamber 14 by the blower 19 so that the air in the test chamber 14 flows into the gas control chamber 25 through the through hole 52 and circulates between the gas control chamber 25 and the test chamber 14. Airflow is generated. Thus, the gas control chamber 25 and the test chamber 14 are quickly maintained at substantially the same temperature and humidity.

  In the test chamber 14, a temperature / humidity sensor 26 is provided in the vicinity of the through hole 51. By providing the temperature / humidity sensor 26 in this manner, the temperature / humidity of the air in the test chamber 14 can be measured. Therefore, the measurement temperature and measurement humidity of the temperature / humidity sensor 26 are recognized by the control device, and the heat pipe 31, the Peltier element 32, the heater 33, and the humidifier 34 are controlled so that the temperature / humidity of the test chamber 14 becomes a predetermined condition. It becomes possible to do. Therefore, the temperature and humidity of the test chamber 14 can be reliably set to a predetermined condition.

  Here, the three adjustment covers 61 are attached between the upper cover 60 and the ceiling 22, but the projections 24 a of the upper cover 60 and the recesses 22 a of the ceiling 22 are fitted without attaching these three adjustment covers 61. They may be attached together. Further, instead of the three adjustment covers 61, two or four or more adjustment covers 61 may be attached between the upper cover 60 and the ceiling 22. Thus, the height of the test chamber can be adjusted in two or more stages depending on whether or not the adjustment cover 61 is attached and the number of the adjustment covers 61 to be attached.

<Second Embodiment>
Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, what has the substantially same function as 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.

  FIG. 3 is a schematic cross-sectional view when the height of the test chamber of the environmental test apparatus according to the second embodiment of the present invention is increased. 4 is a cross-sectional view taken along line XX in FIG. FIG. 5 is a schematic cross-sectional view when the height of the test chamber of the environmental test apparatus according to the second embodiment of the present invention is lowered. As shown in FIG. 3, the environmental test apparatus 200 includes a housing 12 and a cover 115 slidably supported on the outer peripheral side surface 21 a of the housing 12 so as to cover the upper surface of the housing 12.

  As shown in FIG. 4, four sets of slide members 80 each including two rails are provided on the outer peripheral side surface 21 a of the housing 12 along the height direction. These four sets of slide members 80 extend in the height direction on the outer peripheral side surfaces 21a of the side walls 21, and are arranged at the center in the width direction.

  Returning to FIG. 3, the cover 115 has a ceiling 120 (ceiling part) and a side wall 124 (annular wall part). The side wall 124 has a hollow prism shape and is closed at the top by the ceiling 120. Four concave portions 124 a extending along the height direction are formed on the inner peripheral side surface of the side wall 124. These four recesses 124 a are arranged at the center in the width direction on the inner peripheral side surface of each cover 115. The cover 115 is supported so as to be slidable along the height direction of the outer peripheral side surface 21 a of the housing 12 by engaging the four concave portions 124 a with the four sets of slide members 80. The test chamber 114 that surrounds the device under test 9 is formed with the ceiling 22.

  By this slide member 80, the cover 115 slides along the height direction of the outer peripheral side surface 21 a of the housing 12 and is fixed to an arbitrary height by screws 81. Thereby, as shown in FIG. 3, the height of the test chamber 14 can be increased by sliding the cover 115 upward. Further, as shown in FIG. 5, the height of the test chamber 14 can be lowered by sliding the cover 115 downward. Thus, the height of the test chamber 14 can be made variable and finely adjusted by the cover 115 being slidably supported along the height direction of the outer peripheral side surface 21a of the housing 12. Is also possible.

  Note that the cover 115 in the present embodiment is configured to slide along the height direction of the outer peripheral side surface 21 a of the housing 12, but is not limited to the outer peripheral side surface 21 a, and is high on the inner peripheral side surface of the housing 12. Four sets of slide members each composed of two rails are provided along the length direction, and four concave portions extending along the height direction are provided on the outer peripheral side surface of the side wall 124 to engage with each other. Thus, the casing 12 may be supported so as to be slidable along the height direction of the inner peripheral side surface of the casing 12.

<Third Embodiment>
Next, a third embodiment of the present invention will be described with reference to FIGS. In addition, what has the substantially same function as 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.

  FIG. 6 is a schematic cross-sectional view when the height of the test chamber of the environmental test apparatus according to the third embodiment of the present invention is increased. FIG. 7 is a schematic cross-sectional view when the height of the test chamber of the environmental test apparatus according to the third embodiment of the present invention is lowered. As shown in FIG. 6, the environmental test apparatus 300 includes a housing 12 and a cover 215 slidably supported on the outer peripheral side surface of the housing 12 so as to cover the upper surface of the housing 12.

  Similar to the second embodiment, four sets of slide members 80 each including two rails are provided on the outer peripheral side surface 21a of the housing 12 along the height direction. These four sets of slide members 80 extend in the height direction on the outer peripheral side surfaces 21a of the side walls 21, and are arranged at the center in the width direction.

  The cover 215 includes an upper cover 260 and a lower cover 261 (second annular wall portion). The cover 215 forms a test chamber 214 that surrounds the device under test 9 with the ceiling 22 of the housing 12.

  The upper cover 260 has a ceiling 220 (ceiling part) and a side wall 224 (first annular wall part). The side wall 224 has a hollow prism shape, and the upper portion is closed by the ceiling 220. On the outer peripheral side surface 224a of the side wall 224, four sets of slide members 80 each having two rails are provided along the height direction. These four sets of slide members 80 extend in the height direction on the outer peripheral side surfaces 224a of the side walls 224, and are arranged at the center in the width direction.

  The lower cover 261 has a hollow prismatic shape, and is formed with four concave portions 261a and 261b extending along the height direction of the inner peripheral side surface. These four concave portions 261a and 261b are arranged at the center in the width direction on the inner peripheral side surfaces of the lower cover 261, respectively. The upper cover 260 is slidable along the height direction of the inner peripheral side surface of the lower cover 261 by engaging the four concave portions 261a of the lower cover 261 with the four sets of slide members 80 of the upper cover 260. It is supported by. Furthermore, the lower cover 261 is slidably supported along the height direction of the outer peripheral side surface 21 a of the side wall 21 by engaging the four concave portions 261 b of the lower cover 261 and the four slide members 80 of the side wall 21. Has been.

  In this way, each cover slides along the height direction and is fixed to an arbitrary height by the screw 81. Thereby, as shown in FIG. 6, the height of the test chamber 14 can be increased by sliding each cover upward. Moreover, as shown in FIG. 7, the height of the test chamber 14 can be lowered by sliding each cover downward. As described above, each cover is slidably supported so as to be slidable in the height direction, so that the variable length of the height of the test chamber 14 can be increased and finely adjusted. Become.

  Note that the lower cover 261 in the present embodiment is configured to slide along the height direction of the outer peripheral side surface 21 a of the housing 12, but is not limited to the outer peripheral side surface 21 a, and is provided on the inner peripheral side surface of the housing 12. Four sets of slide members each composed of two rails are provided along the height direction, and four concave portions extending along the height direction are provided on the outer peripheral side surface of the lower cover 261. By combining, it may be slidably supported along the height direction of the inner peripheral side surface of the housing 12. In addition, the upper cover 260 in the present embodiment is configured to slide along the height direction of the inner peripheral side surface 261a of the lower cover 261. However, the upper cover 260 is not limited to the inner peripheral side surface 261a, and the outer peripheral side surface of the lower cover 261. Provided with four sets of slide members each composed of two rails along the height direction, and provided with four concave portions extending along the height direction on the inner peripheral side surface of the upper cover 260, respectively. May be slidably supported along the height direction of the outer peripheral side surface of the lower cover 261.

<Fourth embodiment>
Next, a fourth embodiment of the present invention will be described with reference to FIG. In addition, what has the substantially same function as 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.

  FIG. 8 is a schematic perspective view of an environmental test apparatus according to a fourth embodiment of the present invention. As shown in FIG. 8, the environmental test apparatus 400 includes a housing 12 and a cover 315.

  The cover 315 is a cylinder that communicates between the surrounding members 360 (first surrounding member) and 361 (second surrounding member) covering the openings of the through holes 51 and 52 formed in the ceiling 22, and the surrounding members 360 and 361. It is comprised from the member 362. The cover 315 constitutes a test chamber 314 surrounding the device under test 9 with the ceiling 22 of the housing 12.

  The surrounding members 360 and 361 have a hollow rectangular parallelepiped shape and have an area larger than the opening of the through holes 51 and 52 on one surface thereof. An opening is formed on one surface having a larger area than the opening of the through holes 51 and 52, and the through holes 51 and 52 are covered from above on this surface. In the surrounding members 360 and 361, circular openings smaller than the openings of the through holes 51 and 52 are formed on the surfaces facing the through holes 51 and 52. That is, in the surrounding members 360 and 361, the circular opening on the surface covered with the cylindrical member 362 is smaller than the opening on the surface covering the through holes 51 and 52.

  The cylindrical member 362 has a hollow cylindrical shape. The diameter of the cylindrical member 362 is the same size as the circular opening diameter formed in the surrounding members 360 and 361. The cylindrical member 362 is bent in an L shape near both ends, and both ends of the cylindrical member 362 are connected to circular openings formed in the surrounding members 360 and 361, respectively. A transparent member 363 is provided near the center of the cylindrical member 362. The device under test 9 is placed in the transparent member 363. This facilitates observation of the test state of the device under test 9. The transparent member 363 may be removable from the cylindrical member 362. At this time, the device under test 9 can be easily taken out simply by removing the transparent member 363.

  The air blown by the blower 19 is forcibly sent to the surrounding member 360 through the through hole 51, passes through the tubular member 362, and flows into the gas regulation chamber 25 from the surrounding member 361 through the through hole 52. At this time, in the surrounding members 360 and 361, the circular opening on the surface covered with the cylindrical member 362 is smaller than the opening on the surface covering the through holes 51 and 52, so that the gas passing through the cylindrical member 362 Can be made higher than the gas velocity when passing through the surrounding members 360 and 361.

<Fifth Embodiment>
Next, a fifth embodiment of the present invention will be described with reference to FIG. In addition, what has the substantially same function as 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.

  FIG. 9 is a schematic perspective view of an environmental test apparatus according to a fifth embodiment of the present invention. As shown in FIG. 9, the environmental test apparatus 500 includes two housings 12 and a cover 415.

  The cover 415 includes a communication member 460 (first communication member) that allows the through hole 51 of the left housing 12 and the through hole 52 of the right housing 12 to communicate with each other, and the through hole of the left housing 12. 52 and a communication member 461 (second communication member) that communicates with the through hole 51 of the right housing 12.

  One end portion of the communication member 460 covers the opening of the through hole 51 in the left housing 12, and the other end portion covers the opening of the through hole 52 in the right housing 12, and each end portion Is bent into an L shape and communicated. Then, the device under test 9 is placed in the communication member 460. That is, the communication member 460 forms a test chamber 413 that surrounds the device under test 9 with the two housings 12.

  The communication member 461 has a hollow rectangular parallelepiped shape, and has openings of the same size as the upper surface of the housing 12 on both the left and right sides of one surface. And this opening is comprised so that the upper surface of the two housing | casing 12 may be covered. A communication member 460 is included in the communication member 461. Then, the device under test 9 is placed on the upper surface of the communication member 460 in the communication member 461. That is, the communication member 461 constitutes a test chamber 414 that surrounds the device under test 9 with the ceilings 22 of the two casings 12. The cross-sectional area perpendicular to the air flow direction in the communication member 460 is smaller than the cross-sectional area perpendicular to the air flow direction in the communication hole 461.

  The air blown from the blower 19 of the left casing 12 is forcibly sent to the communication member 460 through the through hole 51 of the left casing 12 and passes through the through hole 52 of the right casing 12. And flows into the gas control chamber 25 of the right housing 12. Further, the air blown from the blower 19 of the right housing 12 is forcibly sent to the communication member 361 through the through hole 51 of the right housing 12, and the through hole of the left housing 12. The gas flows into the gas control chamber 25 of the left housing 12 through 52. At this time, the cross-sectional area perpendicular to the air flow direction in the communication member 460 is smaller than the cross-sectional area perpendicular to the air flow direction in the communication hole 461. Therefore, even if the same two housings 12 are used, the speed of the air passing through the communication member 460 can be made higher than the speed of the air passing through the communication member 461. That is, the air speed can be set to different conditions, and at the same time, two types of air speed tests can be performed. In the present embodiment, the device under test 9 is placed in the communication member 460 and on the communication member 460, respectively. However, even when the test is performed by placing the device under test 9 only on one of them. Good.

<Sixth Embodiment>
Next, a sixth embodiment of the present invention will be described with reference to FIG. In addition, what has the substantially same function as 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.

  FIG. 10 is a schematic perspective view of an environmental test apparatus according to a sixth embodiment of the present invention. As shown in FIG. 10, the environmental test apparatus 600 includes two casings 12 and a cover 515 that are adjacent to each other.

  The cover 515 has a hollow rectangular parallelepiped shape, and one surface thereof is open. And this opening is comprised so that the upper surface of the two housing | casing 12 may be covered. The cover 515 is provided with a wall 511 (partition wall) that partitions the space covered by the cover 515. The wall 511 is arranged in the height direction from the end of the surface where the two casings 12 are adjacent to each other. A test chamber 516 (first region) surrounded by the cover 515, the wall 511, and the left housing 12 is formed by the wall 511. Further, a test chamber 517 (second region) surrounded by the cover 515, the wall 511, and the right housing 12 is formed. On the right side surface of the cover 515, a door 530 that opens and closes so as to communicate with the outside is provided. As a result, the device under test 9 can be put into the test chamber 517 and taken out from the test chamber 517 with the cover 515 attached to the housing 12.

  The wall 511 is formed with a rectangular opening 520 (through hole) that allows the space 516 and the space 517 to communicate with each other, and a shutter 521 (opening / closing means) that opens and closes the opening so as to allow communication is provided. By opening the shutter 521, the device under test 9 placed in the test chamber 517 can be moved into the test chamber 516. Further, by closing the shutter 521, the ambient conditions of the test chamber 516 and the test chamber 517 are maintained under different conditions.

  By opening the door 530, the device under test 9 placed on the robot arm 522 driven by control from a control device (not shown) can be carried into the test chamber 517. Further, by opening the shutter 521, the device under test 9 placed in the test chamber 517 can be moved into the test chamber 516 by the robot arm 522.

  As described above, since the surrounding conditions of the test chamber 516 and the test chamber 517 can be kept different by the wall 511, two types of ambient conditions can be tested with one cover 515. In addition, by opening and closing the shutter 521, the device under test 9 can be moved through the opening 520 without removing the cover 515 from the two housings 12, and the test chamber 516 and the test chamber 517 can be moved. Ambient conditions can be maintained.

  According to the environmental test apparatus according to the first to sixth embodiments as described above, since the test chamber is configured by attaching a cover to the casing 12, the casing is made common without changing the entire environmental test apparatus. It is possible to perform various environmental tests simply by changing various covers. Further, since the cover can be removed from the housing, maintenance of the environmental test apparatus is facilitated.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. For example, in the above-described first embodiment, the upper portion of the upper cover 60 is closed and cannot be opened and closed. However, as shown in FIG. Good. Thus, it becomes possible to put the device under test 9 into the test chamber and to remove it from the test chamber with the cover 15 attached to the housing 12. In addition, a transparent glass 716 may be provided on the door 717. This facilitates observation of the test state of the DUT 9 in the test room.

  Moreover, in 1st Embodiment mentioned above, although the test body 9 was not able to be rotated, you may rotate the test body 9 by providing a cover with various apparatuses. For example, as shown in FIG. 12, a shaft 827 extending from the upper center of the upper cover 860, a motor 841 for rotating the shaft 827 while supporting one end of the shaft 827, and a rotating plate on the other end of the shaft 827 801. Then, the device under test 9 is placed on the rotating plate 801. When the motor 841 is driven by control from a control device (not shown), the rotating plate 801 rotates and the device under test 9 can be rotated.

  Furthermore, in the above-described first to sixth embodiments, the cover may be provided with test environment equipment other than temperature and humidity adjusted by the gas control chamber 25, such as a lamp and a gas supply device. Thereby, it is possible to perform an environmental test by using a cover according to the test conditions and purpose as needed without replacing the entire environmental test apparatus including the housing 12.

  In addition, in the first to sixth embodiments described above, the blower 19 has the motor 42, but this motor may be any motor such as a hydraulic motor or an air motor. At this time, for example, when this environmental test apparatus is used in an environment where measurement of unnecessary radiation such as an anechoic chamber is used, the use of an air motor does not generate electromagnetic waves, thus reducing the measurement accuracy of unnecessary radiation. do not do.

  Further, in the first to sixth embodiments described above, the blower 19 may be provided in the test chamber 14 without providing the blower 19 in the gas control chamber 25. In this case, it is preferable to provide the air in the test chamber 14 so as to forcibly flow into the gas control chamber 25.

  Furthermore, in the first to sixth embodiments described above, the test chamber 14 of the environmental test apparatus is disposed above the gas control chamber 25, but the test chamber may be disposed below the gas control chamber. Good. Further, it may be an environmental test apparatus in which the test chamber and the gas control chamber are arranged side by side.

  In addition, in the fifth and sixth embodiments described above, two casings 12 are provided, but the number is not limited to two, and a plurality of casings 12 may be provided.

  In the above-described first to sixth embodiments, the Peltier element 32 is provided as the cooling means. However, the cooling means is not limited to the Peltier element 32, and any cooling means may be provided.

  Furthermore, in the third embodiment described above, the cover 215 is composed of the upper cover 260 and the lower cover 261, but as shown in FIG. 13, a further middle portion is provided between the upper cover 260 and the lower cover 261. A cover 262 may be provided.

It is a schematic sectional drawing of the environmental test apparatus by 1st Embodiment of this invention. It is a top view in the state where the cover of the environmental testing device by a 1st embodiment of the present invention was removed. It is a schematic sectional drawing when the height of the test chamber of the environmental test apparatus by 2nd Embodiment of this invention is made high. FIG. 4 is a sectional view taken along line XX in FIG. 3. It is a schematic sectional drawing when the height of the test chamber of the environmental test apparatus by 2nd Embodiment of this invention is made low. It is a schematic sectional drawing when the height of the test chamber of the environmental test apparatus by 3rd Embodiment of this invention is made high. It is a schematic sectional drawing when the height of the test chamber of the environmental test apparatus by 3rd Embodiment of this invention is made low. It is a schematic perspective view of the environmental test apparatus by 4th Embodiment of this invention. It is a schematic perspective view of the environmental test apparatus by 5th Embodiment of this invention. It is a schematic perspective view of the environmental test apparatus by 6th Embodiment of this invention. It is a schematic perspective view which shows the modification of the environmental test apparatus by 1st Embodiment of this invention. It is a schematic sectional drawing which shows the modification of the environmental test apparatus by 1st Embodiment of this invention. It is a schematic sectional drawing which shows the modification of the environmental test apparatus by 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Environmental test apparatus 9 Test body 12 Case 14 Test chamber 15 Cover 19 Blower 25 Gas control chamber 31 Heat pipe 32 Peltier element 33 Heater 34 Humidifier 51, 52 Through-hole

Claims (8)

In an environmental test device that changes the ambient conditions of the device under test to a predetermined condition,
Temperature and humidity adjusting means for changing the temperature and humidity of the gas;
The gas regulating chamber provided with the temperature / humidity adjusting means constitutes an outflow hole through which the gas regulated by the temperature / humidity regulating means flows out, and the gas regulated by the temperature / humidity regulating means flows into the gas regulating chamber. A housing having an inflow hole to be
It is detachable from the casing, and is attached to the casing while covering the device under test, the inflow hole and the outflow hole, so that it is adjacent to the gas regulating chamber communicating with the inflow hole and the outflow hole. An environmental test apparatus comprising: a cover that constitutes a test chamber that houses a device under test. The cover is
The ceiling of the test chamber;
An annular wall portion extending in a height direction from the ceiling portion;
The environmental test apparatus according to claim 1, further comprising an annular height adjustment member detachably provided at an end of the annular wall portion on the housing side. The cover is
The ceiling of the test chamber;
An annular wall portion extending in a height direction from the ceiling portion,
The environmental test apparatus according to claim 1, wherein the annular wall portion is supported so as to be slidable in a height direction along an outer peripheral surface or an inner peripheral surface of the casing. The cover is
The ceiling of the test chamber;
A first annular wall portion extending in a height direction from the ceiling portion;
A second annular wall portion slidably supported in the height direction along the outer peripheral surface or inner peripheral surface of the housing;
The environmental test according to claim 1, wherein the first annular wall portion is supported so as to be slidable in a height direction along an outer peripheral surface or an inner peripheral surface of the second annular wall portion. apparatus. The cover is
A first surrounding member covering the outflow hole;
A second surrounding member covering the inflow hole;
A cylindrical member for communicating the first and second surrounding members;
The environmental test apparatus according to claim 1, wherein a cross-sectional area of the cylindrical member in a direction orthogonal to the airflow direction is smaller than a cross-sectional area of each surrounding member in a direction orthogonal to the airflow direction. Comprising at least two of the housings,
The cover includes a first communication member that communicates the outflow hole of one of the casings and the inflow hole of the other casing, and the first communication member includes the first communication member. A second communication member that communicates the inflow hole with the outflow hole of the other casing;
2. The environmental test according to claim 1, wherein a cross-sectional area of the first communication member in a direction orthogonal to the airflow direction is smaller than a cross-sectional area of the second communication member in a direction orthogonal to the airflow direction. apparatus. Comprising at least two housings adjacent to each other;
The test includes a first region that communicates with the outflow hole and the inflow hole of one of the housings, and a second region that communicates with the outflow hole and the inflow hole of the other housing. The environmental test apparatus according to claim 1, further comprising a partition wall that partitions the chamber.   The partition wall is formed with a through hole that allows the first region and the second region to communicate with each other, and the communication state in which the first region and the second region communicate with each other and the first region The environmental test apparatus according to claim 8, further comprising an opening / closing unit that opens and closes the through-hole so as to be in a non-communication state where the first region and the second region do not communicate with each other.

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