ENVIRONMENT FORMING APPARATUS AND IMAGE-CAPTURING DEVICE FOR ENVIRONMENT FORMING APPARATUS

There is provided an image-capturing device for an environment forming apparatus used for the environment forming apparatus. The environment forming apparatus includes an environment forming chamber configured to be adjusted to a predetermined environment, and a through-hole configured to connect the environment forming chamber to an outside. The image-capturing device for the environment forming apparatus includes: a camera; an inner tubular member; an outer tubular member configured to cover the inner tubular member; and an air blower. A first ventilation space is formed by an inside of the inner tubular member, and a second ventilation space is formed between the inner tubular member and the outer tubular member. Air is blown toward the camera by the air blower via one of the first ventilation space and the second ventilation space, and is exhausted via the other of the first ventilation space and the second ventilation space.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on Japanese Patent Application No. 2019-204433 filed on Nov. 12, 2019, the contents of which are incorporated herein by way of reference.

BACKGROUND

The present invention relates to an image-capturing device for an environment forming apparatus that is mounted on the environment forming apparatus and that captures an image of an inside of the environment forming apparatus.

An environment test apparatus is known as an example of an environment forming apparatus. The environment test apparatus includes a test chamber (an environment forming chamber), and can artificially create a predetermined environment such as a temperature environment (for example, a high temperature or a low temperature) and a humidity environment (for example, high humidity or low humidity) in the test chamber.

The test chamber of the environment test apparatus is a substantially sealed space and an inside thereof may not be visible.

In a field of the environment test apparatus, there is a demand that an image of a state in the test chamber is captured by a camera and the state in the test chamber is externally monitored, and the image of the state in the test chamber is continuously captured and recorded.

Patent Literature 1 discloses an environment test apparatus in which a camera is inserted into a test chamber. In the environment test apparatus disclosed in Patent Literature 1, an air tube for air supply and an air tube for air exhaust are connected to a case in which a camera is housed, and dry air is supplied into the case.Patent Literature 1: JP-UM-A-H6-43552

In the environment test apparatus disclosed in Patent Literature 1, since the camera is disposed in the test chamber, an image of a state in the test chamber can be captured.

However, there is a concern that durability of the camera is decreased in the environment test apparatus disclosed in Patent Literature 1.

That is, an inside of the test chamber of the environment test apparatus often becomes a harsh environment such as a high temperature or a low temperature, and the camera disposed in the test chamber is exposed to such a harsh environment. The camera is a precision machine, and a usable temperature range and a usable humidity range thereof are limited. A temperature or the like in the test chamber during an environment test often exceeds a usable temperature range or the like of the camera.

A temperature measure is also taken in the environment test apparatus disclosed in Patent Literature 1. That is, in the environment test apparatus disclosed in Patent Literature 1, as described above, the air tube for air supply and the air tube for air exhaust are connected to the case in which the camera is housed, and the dry air is supplied into the case.

However, according to the structure disclosed in Patent Literature 1, it is possible that fresh air and air after heat exchange are mixed in the case and a periphery of the camera cannot be covered with the fresh air.

Therefore, according to the configuration disclosed in Patent Literature 1, there is a concern that the camera is damaged at an early stage.

SUMMARY

Paying attention to the problems described above of the related art, it is an object of the present invention to develop an image-capturing device for an environment forming apparatus that has few camera failures and can be used for a long period of time.

According to one aspect of the present invention, there is provided an image-capturing device for an environment forming apparatus used for the environment forming apparatus. The environment forming apparatus includes an environment forming chamber configured to be adjusted to a predetermined environment, and a through-hole configured to connect the environment forming chamber to an outside. The image-capturing device for the environment forming apparatus includes: a camera; an inner tubular member; an outer tubular member configured to cover the inner tubular member; and an air blower. A first ventilation space is formed by an inside of the inner tubular member, and a second ventilation space is formed between the inner tubular member and the outer tubular member. Air is blown toward the camera by the air blower via one of the first ventilation space and the second ventilation space, and is exhausted via the other of the first ventilation space and the second ventilation space.

According to other aspect of the present invention, there is provided an image-capturing device for an environment forming apparatus used for the environment forming apparatus. The environment forming apparatus includes an environment forming chamber configured to be adjusted to a predetermined environment, and a through-hole configured to connect the environment forming chamber to an outside. The image-capturing device for the environment forming apparatus includes: a camera; an inner tubular member; an outer tubular member configured to cover the inner tubular member; and an air blower. A first ventilation space is formed by an inside of the inner tubular member, and a second ventilation space is formed between the inner tubular member and the outer tubular member. The camera is at a position on a tip-end side of the first ventilation space or the second ventilation space, and the air blower is at a position on a base-end side of the first ventilation space or the second ventilation space.

According to other aspect of the present invention, there is provided an image-capturing device for an environment forming apparatus used for the environment forming apparatus. The environment forming apparatus includes an environment forming chamber configured to be adjusted to a predetermined environment, and a through-hole configured to connect the environment forming chamber to an outside. The image-capturing device for the environment forming apparatus includes: a camera; an inner tubular member; and an outer tubular member configured to cover the inner tubular member. A first ventilation space is formed by an inside of the inner tubular member, and a second ventilation space is formed between the inner tubular member and the outer tubular member. Air is blown toward the camera via one of the first ventilation space and the second ventilation space, and is exhausted via the other of the first ventilation space and the second ventilation space.

In the aspects described above, it is desirable that a transparent member is mounted on a tip-end portion of the outer tubular member and the transparent member has a temperature-raising function.

In the aspects described above, it is desirable that illumination is provided at a tip-end portion of the outer tubular member or in the vicinity of the tip-end portion.

In the aspect described above, it is desirable that the illumination is installed in a ring shape with respect to a light-incident portion of the camera.

In the aspects described above, it is desirable that the environment forming apparatus includes a main-body-side engagement portion, the image-capturing device for the environment forming apparatus includes a coupling member, the coupling member includes an opening and an image-capturing-device-side engagement portion, the image-capturing-device-side engagement portion is configured to be engaged with the main-body-side engagement portion, and the outer tubular member and the inner tubular member are inserted into the opening.

An aspect related to the environment forming apparatus includes an environment forming apparatus that includes an environment forming chamber configured to be adjusted to a predetermined environment and a through-hole configured to connect the environment forming chamber to an outside. Any of the image-capturing devices for the environment forming apparatuses described above is mounted in the through-hole.

DESCRIPTION OF EMBODIMENTS

Hereinafter, an embodiment of the present invention will be further described.

First, an environment forming apparatus on which an image-capturing device1for the environment forming apparatus is mounted will be briefly described.

The environment forming apparatus is specifically an environment test apparatus and is hereinafter referred to as an environment test apparatus100. Further, the image-capturing device1for the environment forming apparatus may be abbreviated to the image-capturing device1.

The environment test apparatus (environment forming apparatus)100artificially creates, for example, a high-temperature environment, a low-temperature environment, a high-humidity environment, and the like.

The environment test apparatus100includes an environment adjustment system as shown inFIG. 10. The environment test apparatus100includes a test chamber (environment forming chamber)3, a cooling device5, a heater6, a humidification device7, and an air blower8. The test chamber (environment forming chamber)3is configured with a part of a heat-insulation vessel formed using a heat-insulation wall2.

In the environment test apparatus100, there is an air flow path10that communicates with the test chamber3. An evaporator11of the cooling device5, the heater6, the humidification device7, and the air blower8are provided in the air flow path10. Further, a temperature sensor12and a humidity sensor13are provided on an outlet side of the air flow path10. In the environment test apparatus100, the members in the air flow path10, the temperature sensor12, and the humidity sensor13constitute an air conditioning device15.

The environment test apparatus100creates a desired temperature and humidity environment in the test chamber3by the air conditioning device15.

As shown inFIGS. 9 and 10, the environment test apparatus100has a through-hole101that communicates the test chamber3with an outside. The through-hole101is referred to as a cable hole and is a hole through which an electric wire of a sensor or the like is inserted.

In an environment test, a test object16is placed in the test chamber3, and the test object16is put in a harsh environment, so that a change thereof is observed.

In the environment test, a sensor17may be attached to the test object16in order to observe a progress of a change of the test object16during the test. For example, a strain gauge for observing a change in an outer shape may be attached, or an electrode for measuring a resistance change may be attached. Alternatively, a temperature sensor may be attached to measure a surface temperature of the test object16. Further, an electric wire for energizing the test object16may be attached.

The through-hole101is provided mainly for a purpose of inserting the electric wire as described above. Therefore, when there is no need to insert the electric wire, a lid102is mounted on the through-hole101as shown inFIG. 9.

In the present embodiment, the through-hole101is made of a tubular member105as shown inFIGS. 2, 5, 6, and 7, and one end thereof protrudes to an outside of the test chamber3. An external thread (a main-body-side engagement portion)106is formed on a protruding portion107of the tubular member105. Further, the tubular member105includes flanges110and111, and the heat-insulation wall2of the test chamber3is sandwiched by the flanges110and111.

As shown inFIG. 6, an internal thread109is formed on the lid102.

The internal thread109of the lid102is engaged with the external thread (the main-body-side engagement portion)106on an environment test apparatus100side, so that the lid102is attached to the environment test apparatus100.

As shown inFIG. 5, the image-capturing device1is configured with a tubular body portion20, an air-blowing unit21, a cover member22, and an attachment member23. In the present embodiment, the tubular body portion20, the air-blowing unit21, and the cover member22integrally constitute a main body portion25.

As shown inFIGS. 2 and 3, the tubular body portion20includes an outer tubular member30, an inner tubular member31, a camera unit32, and a sealing glass (a transparent member)33.FIG. 2conceptually illustrates an internal structure of the image-capturing device1, and each part is simplified for convenience of the drawing. Further, a part of the attachment member23is omitted.

The outer tubular member30is a pipe made of a material having a heat resistance and a cold resistance. The outer tubular member30may be made of a material having heat insulation properties. Particularly, when the outer tubular member30is long, it is desirable that the outer tubular member30is made of a material having heat insulation properties.

The outer tubular member30has an outer diameter substantially equal to an inner diameter of the through-hole101of the environment test apparatus100, and is a pipe having an outer diameter that can be inserted into the through-hole101with almost no gap.

The inner tubular member31is a pipe whose outer diameter is fairly smaller than an inner diameter of the outer tubular member30. A total length of the inner tubular member31is smaller than a total length of the outer tubular member30.

The camera unit32is configured with a camera36, a hood member37, and an illumination member38.

The camera36is a small-sized digital camera and can capture a moving image and a still image.

The camera36includes a light-incident portion51and can take in light from the light-incident portion51so as to capture an image.

The hood member37is a tube having a black inner surface.

As shown inFIG. 3, for example, light-emission elements50are arranged in an annular shape in the illumination member38. The light-emission element50is, for example, an LED and is a point light source. In the illumination member38, a large number of light-emission elements50serving as the point light sources are attached to a doughnut-shaped substrate.

The number of the light-emission elements50is optional, but is desirably plural. For example, it is recommended that the number of the light-emission elements50be 3 or more, and it is desirable that the light-emission elements are arranged in a ring shape at intervals, but only one light source may be used.

The illumination member38is not limited to a point light source, and may be a planar light-emission body or a linear light-emission body. A light-emission principle is not limited to that of the LED. The illumination member38is not limited to the one made of the light-emission elements50.

The light-incident portion51of the camera36and surroundings in front of the light-incident portion51are covered by the hood member37. The hood member37concentrically surrounds the light-incident portion51of the camera36.

The illumination member38is further outside the hood member37. The illumination member38concentrically surrounds the hood member37.

The camera unit32is formed by integrating the camera36, the hood member37, and the illumination member38, and can be handled as a single component.

A positional relationship among the camera36, the hood member37, and the illumination member38is important.

The hood member37is selected to have an inner diameter and a length that do not allow light of the illumination member38to be directly incident on the camera36and deviate from a viewing angle of the camera36.

The sealing glass (the transparent member)33is a glass referred to as a heater glass and has a temperature-raising function.

Specifically, the sealing glass (the transparent member)33has a film-shaped heater (not shown) attached to a transparent heat-resistant glass, and generates heat by energizing a lead wire53.

In the tubular body portion20, the inner tubular member31and the camera unit32are built in the outer tubular member30, and the sealing glass (the transparent member)33is mounted on a tip end of the outer tubular member30.

The outer tubular member30and the inner tubular member31are arranged concentrically, and the outer tubular member30covers an outer periphery of the inner tubular member31. As shown inFIG. 2, a tip-end side of the inner tubular member31is housed in the outer tubular member30.

On the contrary, a base-end side of the inner tubular member31protrudes from a base-end side of the outer tubular member30as shown inFIG. 2.

An inside of the inner tubular member31functions as a first ventilation space40. Further, there is a gap between the outer tubular member30and the inner tubular member31, and the gap constitutes a second ventilation space41.

The camera unit32is provided in the outer tubular member30and at a tip-end portion of the inner tubular member31. There is a gap42between an inner surface of a tip-end opening portion of the inner tubular member31and the camera36. Further, the camera36is installed on an extension of a center line of the inner tubular member31.

The sealing glass (the transparent member)33is mounted on the tip end of the outer tubular member30via a sealing member43such as an O-ring. A tip-end side of the outer tubular member30is sealed by the sealing glass (the transparent member)33in a state of having airtightness.

A distance between the sealing glass (the transparent member)33and the camera unit32is a distance by which the light of the light-emission elements50is not incident on the camera36even when light of the light-emission elements50is reflected by a surface of the sealing glass (the transparent member)33.

As shown inFIG. 2, the air-blowing unit21includes a small-sized air blower48. In the air-blowing unit21, the air blower48is attached to a support member45. The air blower48is an axial-flow air blower including a propeller-shaped blade46. The blade46is rotated by a motor47.

As shown inFIG. 2, the air-blowing unit21is installed at the base-end side of the inner tubular member31. A position of the blade46generally falls within a region of an opening circle of the inner tubular member31and does not protrude toward a second ventilation space41side.

As shown inFIG. 5, the cover member22is a quadrangular case in which one surface is opened and other five surfaces are covered by walls.

That is, the cover member22includes a front surface wall60, an upper surface wall61, a bottom surface wall62, left and right side surface walls63,65. A back surface side of the cover member22is opened.

There is an intake opening70in the front surface wall60of the cover member22. Exhaust openings71are formed in the upper surface wall61and the bottom surface wall62of the cover member22, respectively.

Locking metal fittings72are provided on the left and right side surface walls63,65of the cover member22, respectively. The locking metal fitting72is a pulling-side member of a locking member including a toggle mechanism.

The tubular body portion20and the air-blowing unit21are fixed to the cover member22by screws or the like (not shown), and the tubular body portion20, the air-blowing unit21, and the cover member22are integrated to constitute the main body portion25.

Next, the attachment member23will be described.

As shown inFIGS. 5 and 7, the attachment member23is configured with an attachment metal fitting73and a coupling member75.

As shown inFIGS. 5 and 7, the attachment metal fitting73is a metal fitting having an approximate shape of a concave, and includes left and right side surface walls77,78and a front surface wall76that faces the front surface wall60of the cover member22.

A large opening66is provided in a center of the front surface wall76.

Locking pieces80are provided on the left and right side surface walls77,78, respectively.

A coupling member75is a circular member provided with an opening81, and similarly to the lid102, an internal thread (an image-capturing-device-side engagement portion)108is formed on an inner surface.

The attachment member23is attached to the tubular member105where the through-hole101of the environment test apparatus100is formed.

Specifically, the opening66of the attachment metal fitting73is aligned with a protruding portion107of the tubular member105that protrudes from the environment test apparatus100, and the coupling member75is engaged with an external thread106of the tubular member105from an outside of the protruding portion107. That is, the internal thread108of the coupling member75is engaged with the external thread106of the tubular member105, so that the coupling member75is attached to the protruding portion107of the tubular member105, and the attachment metal fitting73is sandwiched between the coupling member75and the flange110of the tubular member105.

Sealing members82and83such as an O-ring are interposed between the flange110and the attachment metal fitting73and between the attachment metal fitting73and the coupling member75, respectively.

An attachment procedure of the image-capturing device1is as shown inFIGS. 6 to 8.

First, the attachment member23is attached to the tubular member105where the through-hole101of the environment test apparatus100is formed. That is, as shown inFIG. 6, the existing lid102is removed from the tubular member105of the environment test apparatus100.

Subsequently, as shown inFIG. 7, the sealing member82, the attachment metal fitting73, the sealing member83, and the coupling member75are sequentially mounted on the protruding portion107of the tubular member105, and the coupling member75is fastened to the protruding portion107so as to fix the attachment metal fitting73.

Accordingly, as shown inFIG. 8, the attachment metal fitting73is fixed to an outer end portion of the tubular member105.

Thereafter, the main body portion25is attached to the attachment metal fitting73. Specifically, the tubular body portion20of the main body portion25is inserted into the through-hole101of the environment test apparatus100.

The tubular body portion20of the main body portion25is inserted into the opening81of the coupling member75and the opening66of the attachment metal fitting73to reach the through-hole101of the environment test apparatus100. The outer tubular member30and the inner tubular member31of the tubular body portion20are both inserted into the opening81of the coupling member75, the opening66of the attachment metal fitting73, and the through-hole101.

The main body portion25of the image-capturing device1is attached to the attachment metal fitting73such that a concave side of the cover member22and a concave side of the attachment metal fitting73face each other. Then, the locking metal fittings72provided on the side surface walls63and65of the cover member22are engaged with the locking pieces80of the attachment metal fitting73, so that the main body portion25is integrated with the attachment member23.

As a result, the image-capturing device1is attached to the environment test apparatus100in a state where the tubular body portion20is inserted into the through-hole101.

FIG. 2is a cross-sectional view schematically showing a state where the image-capturing device1is attached to the environment test apparatus100.

In the main body portion25of the image-capturing device1, the air-blowing unit21is outside the heat-insulation vessel. Most of the tubular body portion20is in the through-hole101that penetrates the heat-insulation wall2, and a tip end thereof is at a position that faces the test chamber3.

The test chamber3and an inside of the outer tubular member30of the main body portion25are partitioned by the sealing glass (the transparent member)33, and an airtight state is maintained therebetween.

The light-incident portion51of the camera36in the main body portion25faces a test chamber3side. Further, the illumination member38also faces the test chamber3side.

Next, functions of the image-capturing device1will be described.

The environment test apparatus100of the present embodiment is used to perform an environment test, and an image of a state in the test chamber3during the environment test is captured by the image-capturing device1.

That is, similar to the known environment test, an inside of the test chamber3is adjusted to a desired high-temperature environment or low-temperature environment, an article is placed therein, and the environment test is performed.

While an image is captured, the illumination member38of the image-capturing device1is turned on. The illumination member38faces the test chamber3side. An article in the test chamber3is illuminated by light emitted from the illumination member38. Therefore, an image can be captured while illuminating the inside of the test chamber3or the like with illumination member38.

Here, the camera unit32includes the hood member37. The hood member37surrounds the light-incident portion51of the camera36.

Accordingly, the light of the illumination member38is blocked by the hood member37and is not directly incident on the camera36.

Further, the hood member37is sufficiently large with respect to the light-incident portion51of the camera36and a total length thereof is short. Accordingly, the hood member37does not enter a field of view of the camera36, and the hood member37does not appear in an image.

Further, the illumination member38is disposed so as to surround an outside of the hood member37in a ring shape, and there is little concern that reflected light enters the light-incident portion51. In addition, the illumination member38is unlikely to appear in the camera36.

When the inside of the test chamber3is a high-temperature environment or a low-temperature environment, the motor47of the air-blowing unit21of the image-capturing device1is driven.

Outside air is sucked from the intake opening70of the cover member22by the air blower48of the air-blowing unit21. The outside air passes through the first ventilation space40formed inside the inner tubular member31and is directly blown to the camera36.

The tip end of the outer tubular member30of the main body portion25is sealed by the sealing glass (the transparent member)33. Therefore, after passing through a region of the camera36, blown air enters the second ventilation space41formed between the outer tubular member30and the inner tubular member31and returns to a base-end side of the tubular body portion20. Then, the air is exhausted through the exhaust openings71of the cover member22. That is, in the present embodiment, an inside of the image-capturing device1is divided into a forward side flow path that starts from the air blower48and reaches a surrounding space of the camera36via the first ventilation space40and the gap42in the inner tubular member31, and a return side flow path that starts from the surrounding space of the camera36and reaches the exhaust openings71via the second ventilation space41formed between the outer tubular member30and the inner tubular member31, so that staying of air is unlikely to occur.

Therefore, according to the image-capturing device1of the present embodiment, fresh air and air having a raised temperature after heat exchange are rarely mixed, and the fresh air can be blown to the camera36. In this way, fresh outside air is always blown to the camera36, and an ambient temperature of the camera36falls within a predetermined allowable range. The same applies to humidity. Humidity around the camera36is substantially the same as that of the outside air, and falls within a predetermined allowable range.

Therefore, it is unlikely that the camera36will malfunction. That is, the image-capturing device for the environment forming apparatus according to the present invention has few camera failures and can be used for a long period of time.

Further, when the inside of the test chamber3is adjusted to a low-temperature environment, a heater of the sealing glass (the transparent member)33is energized, and a surface temperature of the sealing glass (the transparent member)33is kept at a temperature higher than a temperature in the test chamber3.

As a result, frost on an inner surface and an outer surface of the sealing glass (the transparent member)33is prevented. Further, a temperature of the sealing glass (the transparent member)33is increased, so that condensation or fogging can be prevented from occurring on the sealing glass (the transparent member)33.

In the image-capturing device1of the present embodiment, the camera36, the hood member37, and the illumination member38constitute one camera unit32.

Further, in the image-capturing device1of the present embodiment, an air-blowing unit21side is also configured as a unit.

Therefore, the image-capturing device of the present embodiment is highly compatible with components and can be applied to various environment test apparatuses.

That is, the through-hole101where the image-capturing device1is mounted may be a cable hole, and cable holes having the same inner diameter may be used in a plurality of environment test apparatuses.

Further, a length of the through-hole101may depend on a thickness of the heat-insulation wall2, and may vary depending on a purpose, a capacity, a grade, or the like of the environment test apparatus.

In a case where diameters of cable holes are the same but thicknesses of heat-insulation walls are different, when a plurality of pipes that only differ in length are respectively prepared for the outer tubular member30and the inner tubular member31, the pipes are selected according to a length of the through-hole101and the camera unit32, the air-blowing unit21and the cover member22are combined, so that the image-capturing device1corresponding to each environment test apparatus100can be completed.

In the image-capturing device described above, the air-blowing unit21is attached to the base-end side of the inner tubular member31, the first ventilation space40formed by the inner tubular member31is set as the forward side flow path, and air is blown toward the camera36. The present invention is not limited to this configuration. The air-blowing unit21may be attached to a base-end side of the second ventilation space41formed between the outer tubular member30and the inner tubular member31. According to this configuration, air passes through the second ventilation space41and is blown to the camera36, and is exhausted through the first ventilation space40that is formed by the inner tubular member31and that is set as the return side flow path.

The air blower may be installed at a position away from the environment test apparatus100, and the air blower and the first ventilation space40or the second ventilation space41may be connected by a duct or the like. Further, air blowing may be performed using an air-blowing device other than the air blower. For example, air compressed by a compressor may be supplied to the image-capturing device. When the inside of the test chamber3has a low temperature, dehumidified air may be supplied to the image-capturing device. It is also conceivable to supply air heated or cooled in advance to the image-capturing device to prevent condensation and the like.

In place of the air, other gases such as nitrogen may be supplied to the image-capturing device.

When a configuration in which gas is supplied from an outside is adopted, it is recommended to provide a port connected to the first ventilation space40or the second ventilation space41. For example, the port may be provided in the cover member22or a port connected to the first ventilation space40or the second ventilation space41may be provided on a separate board, and the board may be fixed to the main body portion25of the image-capturing device or may be attached to a side surface of the environment test apparatus100.

In the embodiment described above, although the image-capturing device1is attached to the environment test apparatus100by using the existing external thread (the main-body-side engagement portion)106provided on the protruding portion107of the tubular member105, the image-capturing device1may be attached by other methods.

For example, a fastening element such as a bolt may be used to attach the image-capturing device directly to the side surface of the environment test apparatus100.

Further, the image-capturing device may be attached to the side surface of the environment test apparatus100by an adhesive or a magnet.

Although the environment test apparatus has been described as an example in the embodiment described above, an object of the present invention is not limited to the environment test apparatus, and the present invention can be widely used for an apparatus that performs a heating processing such as an oven and an environment forming apparatus such as a storage warehouse having an air conditioning function.

In the embodiment described above, although the image-capturing device1is mounted in the cable hole, other through-holes may be utilized. For example, the image-capturing device1may be mounted in a through-hole through which a rod, an arm, or the like for applying an external force to an article in the test chamber3is inserted, a through-hole for connecting an air-conditioning apparatus installed outside to the test chamber3with a duct, or a through-hole for inserting a sensor.

The embodiment described above provides an image-capturing device for an environment forming apparatus used for the environment forming apparatus. The environment forming apparatus includes: an environment forming chamber configured to be adjusted to a predetermined environment; and a through-hole configured to connect the environment forming chamber to an outside, in which the environment forming apparatus includes a main-body-side engagement portion. The image-capturing device for the environment forming apparatus includes: a camera; a camera holding member configured to hold the camera; and a coupling member, in which the coupling member includes an opening and the image-capturing-device-side engagement portion, the image-capturing-device-side engagement portion is configured to be engaged with the main-body-side engagement portion, and the camera is fixable to the environment forming apparatus by engaging the image-capturing-device-side engagement portion with the main-body-side engagement portion in a state where the camera is inserted into the through-hole.