Measuring instrument

Abstract

SOLUTION: Provided is a measuring instrument comprising a first holding unit for holding an electric component, and a cover unit for accommodating the electric component and the first holding unit, the first holding unit being provided with a first insertion unit into which a replacement member is inserted. The first holding unit may replaceably hold an electric component. The first insertion unit may be provided so as to enclose at least a section surrounding the electric component while the electric component is being held by the first holding unit. The measuring instrument may further be provided with a circuit board electrically connected to the electric component. The first insertion unit may be provided so as to enclose at least a section surrounding the electric component and at least a section surrounding the circuit board while the electric component is being held by the first holding unit.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a measuring instrument. [Background technology]

[0002] Patent Document 1 states that "the present invention provides a measuring instrument that can reduce the number of parts in the fixing structure of a rod-shaped replacement object, thereby making it easier and less costly to replace the replacement object" (abstract). [Prior art document] [Patent Documents] [Patent Document 1] JP 2019-090761 A Summary of the Invention

[0003] A first aspect of the present invention provides a measuring instrument comprising a first holding part for holding an electrical component and a cover part for accommodating the electrical component and the first holding part, the first holding part being provided with a first insertion part into which a replacement part is inserted.

[0004] The first holding portion may hold the electrical component in a replaceable manner.

[0005] In any of the measuring instruments described above, the first insertion portion may be provided so as to surround at least a portion of the periphery of the electrical component when the electrical component is held by the first holding portion.

[0006] Any of the above measuring instruments may further include a circuit board electrically connected to the electrical component. The first insertion portion may be provided to surround at least a portion of the periphery of the electrical component and at least a portion of the periphery of the circuit board when the electrical component is held by the first holding portion.

[0007] In any of the measuring instruments described above, the cover may have a second holding portion that holds the electrical component. The second holding portion may be provided with a second insertion portion into which the replacement part is inserted.

[0008] In any of the measuring instruments described above, the second holding portion may hold the electrical component in a replaceable manner.

[0009] In any of the measuring instruments described above, the second insertion portion may be provided so as to surround at least a portion of the periphery of the electrical component when the electrical component is held by the second holding portion.

[0010] Any of the above measuring instruments may further include a circuit board electrically connected to the electrical component, and the first insertion portion and the second insertion portion may be provided so as to surround at least a portion of the periphery of the electrical component and the circuit board.

[0011] In any of the above measuring instruments, the electrical component may be columnar in shape and have a longitudinal direction, and the first holding part may be provided with a first hole into which one end of the columnar electrical component in the longitudinal direction is inserted.

[0012] In any of the above measuring devices, the first insertion portion may be arranged to surround at least a portion of the periphery of the first hole portion when viewed in a direction from the cover portion to the first holding portion.

[0013] In any of the above measuring instruments, the electrical component may be columnar in shape and have a longitudinal direction, and the second holding portion may be provided with a second hole into which the other longitudinal end of the columnar electrical component is inserted.

[0014] In any of the above measuring devices, the second insertion portion may be arranged to surround at least a portion of the periphery of the second hole portion when viewed in a direction from the cover portion to the first holding portion.

[0015] Any of the measuring instruments described above may further include an electric component and a replacement member. The replacement member may be disposed in contact with at least a portion of a side surface of the columnar electric component that extends along the longitudinal direction.

[0016] In any of the above measuring instruments, the replacement member may be in a sheet shape. One surface of the sheet-shaped replacement member may be placed in contact with a side surface of the columnar electrical component. The moisture absorption of the one surface of the replacement member may be lower than the moisture absorption of the other surface of the replacement member.

[0017] In any of the above measuring instruments, the replacement member may be in a sheet shape. One surface of the sheet-shaped replacement member may be placed in contact with a side surface of the columnar electrical component. The moisture absorption of the one surface of the replacement member may be higher than the moisture absorption of the other surface of the replacement member.

[0018] In any of the measuring devices described above, at least a portion of the replacement member may be provided on an inner wall of the cover portion.

[0019] In any of the measuring devices described above, the replacement member may be made of moisture-absorbing fiber.

[0020] A first aspect of the present invention provides a measuring instrument comprising: a first holding part for holding an electric component, a circuit board electrically connected to the electric component, a moisture absorbing member formed of a material having a higher moisture absorption property than the circuit board, and a cover part for accommodating the electric component, the first holding part, the circuit board, and the moisture absorbing member.

[0021] The above summary of the invention does not list all of the features of the present invention, and subcombinations of these features may also be inventions. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a diagram illustrating an example of a measuring device 100 according to an embodiment of the present invention. [Figure 2] 2 is a perspective view showing an example of a first holding portion 10. FIG. [Figure 3] 10 is another perspective view showing an example of the first holding portion 10. FIG. [Figure 4] 10 is another perspective view showing an example of the first holding portion 10. FIG. [Figure 5]FIG. 2 is a perspective view showing an example of a cover portion 40. [Figure 6] FIG. 2 is a diagram showing an example of a cross section of the measuring device 100. [Figure 7] FIG. 2 is a perspective view showing an example of a holding member 14. [Figure 8] FIG. 5 is a top view of the first holding part 10 shown in FIGS. 2 to 4. [Figure 9] 10 is a diagram showing an example of the positional relationship between an electrical component 22 and a first insertion portion 20 as viewed from above. FIG. [Figure 10] 10 is a diagram showing another example of the positional relationship between an electrical component 22 and a first insertion portion 20 as viewed from above. FIG. [Figure 11] 10 is a diagram showing an example of the positional relationship between an electric component 22 and a second board 34, and a first insertion portion 20, as viewed from above. FIG. [Figure 12] 10 is a diagram showing another example of the positional relationship between the first insertion portion 20 and the electrical component 22 and the second board 34 as viewed from above. FIG. [Figure 13] FIG. 2 is a diagram showing a cross section of a measuring device 200 of a comparative example. [Figure 14] FIG. 10 is a diagram showing an example of the change over time in temperature T of the environment in which measuring device 100 and measuring device 200 are placed. [Figure 15] FIG. 10 is a diagram showing an example of changes over time in humidity H of the environment in which measuring device 100 and measuring device 200 are placed. [Figure 16] FIG. 14 shows an example of the results of measuring the change in humidity H over time in internal space 92 (see FIG. 6) and internal space 192 (see FIG. 13) when the temperature change in FIG. 14 and the humidity change in FIG. 15 are applied to measuring device 100 and measuring device 200. [Figure 17] 10 is a diagram showing another example of a cross section of the measuring device 100. FIG. [Figure 18] FIG. 3 is a schematic diagram of an evaluation system 300 for evaluating the cooling performance of measuring device 100 and measuring device 200. [Figure 19] 10 is a diagram showing an example of a change in temperature T over time inside a thermostatic chamber 110. FIG. [Figure 20] 10 is a diagram showing an example of a change in humidity H over time inside a thermostatic chamber 110. FIG. [Figure 21] FIG. 10 is a diagram showing an example of the results of measuring the change over time in temperature T′ of internal space 92 of measuring device 100 and internal space 192 of measuring device 200. [Figure 22] FIG. 10 is a diagram showing an example of the results of measuring the change over time in temperature T′ of internal space 92 of measuring device 100 and internal space 192 of measuring device 200. [Figure 23] FIG. 10 is a diagram showing an example of the results of measuring the change over time in temperature T′ of internal space 92 of measuring device 100 and internal space 192 of measuring device 200. [Figure 24] 2 is a diagram showing a part of an electric component 22 and a replacement part 50 arranged in contact with a side surface 24 of the electric component 22 as viewed from above. FIG. [Figure 25] 10 is a diagram showing an example of the relationship between the position in the thickness direction of the exchange member 50 and the moisture absorption Q of the exchange member. FIG. [Figure 26] 10 is a diagram showing another example of the relationship between the position in the thickness direction of the exchange member 50 and the moisture absorption Q of the exchange member. FIG. [Figure 27] 10 is a diagram showing another example of a cross section of the measuring device 100. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0023] The present invention will be described below through embodiments of the invention, but the following embodiments do not limit the scope of the invention according to the claims. Furthermore, not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention.

[0024] FIG. 1 is a diagram showing an example of a measuring device 100 according to an embodiment of the present invention. Measuring device 100 measures a physical quantity such as acceleration. Measuring device 100 may measure the physical quantity while attached to an object. Measuring device 100 may be attached to the object by means of a magnet, string, screw, or the like. The object may be a device such as a machine, a part of a building such as a wall or ceiling, or another object. Measuring device 100 includes a first holding unit 10 and a cover unit 40. In this example, first holding unit 10 has a base unit 12 (described below). Cover unit 40 covers first holding unit 10. In this example, cover unit 40 surrounds the space above base unit 12.

[0025] Fig. 2 is a perspective view showing an example of the first holding unit 10. Figs. 3 and 4 are perspective views of the first holding unit 10 viewed from other directions. The first holding unit 10 of this example has a base unit 12, a holding member 14, and a circuit board 30. In this example, the holding member 14 and the circuit board 30 are provided above the base unit 12. In this example, the circuit board 30 has a first board 32 and a second board 34.

[0026] The first substrate 32 and the second substrate 34 may be provided with an electric circuit including wiring, terminals, etc. In this example, the first substrate 32 is disposed on the upper surface of the base portion 12, and the holding member 14 is disposed above the first substrate 32. In this example, the cover portion 40 is disposed above the base portion 12. The second substrate 34 in this example is disposed relative to the first substrate 32 so that their plate surfaces intersect. The plate surface of a substrate is the plane with the largest area among the planes that the substrate has. The plate surface of the second substrate 34 may be perpendicular to the plate surface of the first substrate 32.

[0027] In this specification, technical matters may be explained using orthogonal coordinate axes of the X-axis, Y-axis, and Z-axis. In this specification, the direction perpendicular to the upper surface of the base 12 is defined as the Z-axis direction. The upper surface of the base 12 is the XY plane. In this specification, the direction perpendicular to the plate surface of the second substrate 34 is defined as the Y-axis direction, and the direction perpendicular to the Y-axis direction on the XY plane is defined as the X-axis direction.

[0028] In this specification, the side of the cover unit 40 is referred to as "upper" and the side of the base unit 12 is referred to as "lower." The Z-axis direction may be the direction of gravity, and the XY plane may be a horizontal plane. In this example, the Z-axis direction is the direction of gravity, but the directions of "upper" and "lower" are not limited to the direction of gravity. In this specification, a top view refers to the case where the measuring device 100 is viewed in the direction from the cover unit 40 to the first holding unit 10 in the Z-axis direction.

[0029] Measuring device 100 may include an electrical component 22. Electrical component 22 is electrically connected to circuit board 30. Electrical component 22 may be a power source that supplies power to measuring device 100 via circuit board 30. In this example, electrical component 22 is a battery. Electrical component 22 may also be a component that is driven by power supplied from a power source external to measuring device 100. First holding portion 10 holds electrical component 22. Cover portion 40 (see FIG. 1) houses electrical component 22 and first holding portion 10.

[0030] Measuring device 100 may include antenna 36 (see FIG. 3) and sensor 38 (see FIG. 3). In this example, antenna 36 is provided on second substrate 34, and sensor 38 is provided on first substrate 32. Sensor 38 measures a physical quantity related to measuring device 100. Sensor 38 is, for example, an acceleration sensor that detects the movement of measuring device 100. Sensor 38 may be a temperature / humidity sensor that measures at least one of the temperature and humidity in internal space 92 (described below) of measuring device 100, or may be a pressure sensor that measures the pressure in internal space 92 (described below). In this example, measuring device 100 transmits data measured by sensor 38 (see FIG. 3) to the outside of measuring device 100 via antenna 36 (see FIG. 3).

[0031] The first holding part 10 is provided with a first insertion part 20. In this example, the first insertion part 20 is provided in the holding member 14. An exchange part 50 (described later) is inserted into the first insertion part 20. The first insertion part 20 is a space sandwiched between the holding members 14 in at least one direction. In this example, the first insertion part 20 has an opening at the upper end of the holding member 14 in the Z-axis direction, and is a space having depth in the Z-axis direction. A floor surface may be formed by the holding member 14 or the like at the lower end of the first insertion part 20 in the Z-axis direction. In this example, the exchange part 50 is inserted from the opening in the Z-axis direction. However, the opening and depth direction of the first insertion part 20 are not limited to this example.

[0032] The holding member 14 in this example includes an outer wall 16 and an inner wall 18. The outer wall 16 and the inner wall 18 may each be a plate-like member having a side surface perpendicular to the XY plane. In this specification, when an angle is described as "perpendicular" or "parallel," a state with an error of ±10 degrees from the perpendicular or parallel state may also be considered "perpendicular" or "parallel."

[0033] The inner wall 18 may be provided so as to surround at least a portion of the periphery of the electrical component 22 in a top view. For example, the inner wall 18 may be provided so as to sandwich the electrical component 22 in at least one direction within the XY plane. The inner wall 18 may have a curved shape in a top view, or may have multiple straight lines at different angles. In other words, the direction of the normal to the side surface of the inner wall 18 may change continuously or discretely.

[0034] The outer wall 16 is disposed outside the inner wall 18. In other words, the distance between the outer wall 16 and the cover portion 40 is smaller than the distance between the inner wall 18 and the cover portion 40. The outer wall 16 may be provided so as to surround at least a portion of the periphery of the inner wall 18 in a top view. For example, the outer wall 16 may be provided so as to sandwich the inner wall 18 in at least one direction within the XY plane. The outer wall 16 may have a curved shape in a top view, or may have multiple straight lines at different angles. In other words, the direction of the normal to the side surface of the outer wall 16 may change continuously or may change discretely. The inner wall 18 and the outer wall 16 may have side surfaces that are parallel to each other.

[0035] The first holding portion 10 may be provided with a first hole portion 19. In this example, the first hole portion 19 is a space surrounded by an inner wall 18 in the XY plane. In this example, an electrical component 22 is inserted into the first hole portion 19. In this example, the electrical component 22 has a longitudinal direction in the Z-axis direction. In this example, the electrical component 22 has a columnar portion with a central axis parallel to the Z-axis. The length of the inner wall 18 in the Z-axis direction may be shorter than the length of the electrical component 22. The length of the inner wall 18 in the Z-axis direction may be half or less of the length of the electrical component 22 in the Z-axis direction. The length of the outer wall 16 in the Z-axis direction may be shorter than the length of the electrical component 22 in the Z-axis direction. The length of the outer wall 16 in the Z-axis direction may be half or less of the length of the electrical component 22 in the Z-axis direction. The length of the outer wall 16 in the Z-axis direction may be the same as the length of the inner wall 18 in the Z-axis direction.

[0036] The second substrate 34 in this example is disposed facing the electrical component 22. An inner wall 18 may be provided between the second substrate 34 and the electrical component 22. An outer wall 16 may not be provided between the second substrate 34 and the electrical component 22.

[0037] FIG. 5 is a perspective view showing an example of the cover unit 40. FIG. 5 is a view of the cover unit 40 viewed from below toward above. In FIG. 5, the Y-axis direction and the Z-axis direction overlap. The cover unit 40 has a housing 42. The housing 42 may be cylindrical with a central axis parallel to the Z-axis. The cover unit 40 may have a second holding portion 80 that holds the electrical component 22. The second holding portion 80 may be provided in a part of the housing 42. In this example, the second holding portion 80 is provided on an upper surface 46 of an inner wall 45 of the cover unit 40 that faces the first holding portion 10 in the Z-axis direction.

[0038] The second holding part 80 is provided with a second insertion part 90. The second holding part 80 in this example has a side wall 82. In this example, the second insertion part 90 is the space outside the side wall 82 in the XY plane. The side wall 82 may be surrounded by the housing 42 in the XY plane. The upper end of the side wall 82 in the Z axis direction may be fixed to the upper surface 46, and the lower end may be in contact with an internal space 92 (described later). An exchange part 50 (described later) is inserted into the second insertion part 90. The length of the side wall 82 in the Z axis direction may be shorter than the length of the housing 42 in the Z axis direction. The length of the side wall 82 in the Z axis direction may be less than half the length of the housing 42 in the Z axis direction.

[0039] The second holding portion 80 may be provided with a second hole 84. In this example, the second hole 84 is a space surrounded by a side wall 82 in the XY plane. The electrical component 22 may be inserted into the second hole 84.

[0040] The inner wall 45 of the cover portion 40 surrounds an internal space 92 (described below). When the cover portion 40 is viewed from below to above, the second holding portion 80 may be surrounded by the inner wall 45 of the cover portion 40.

[0041] Fig. 6 is a diagram showing an example of a cross section of measuring device 100. Fig. 6 is a YZ cross section of measuring device 100 in Figs. 2 to 5. The YZ cross section is a cross section passing through the center of electrical component 22 (see Figs. 2 to 4) when viewed from above.

[0042] The first holding unit 10 and the second holding unit 80 hold the electric component 22 in a replaceable manner. "Replaceably holding the electric component 22" means that the electric component 22 can be replaced by a reversible operation. An example of a reversible operation is screw fastening. When the electric component 22 is held by adhesive or solder, etc., replacing the electric component 22 by peeling off the adhesive or solder does not fall under the case of the electric component 22 being replaceably held.

[0043] As described above, the electrical component 22 in this example has a columnar shape with its longitudinal direction in the Z-axis direction. The electrical component 22 may have a cylindrical shape, a polygonal columnar shape, or an elliptical columnar shape. The length of the electrical component 22 in the Z-axis direction may be shorter than the length of the housing 42 in the Z-axis direction. The length of the electrical component 22 in the Z-axis direction may be greater than or less than half the length of the housing 42 in the Z-axis direction.

[0044] The width of the electrical component 22 in the XY plane may be smaller than the width of the internal space 92 in the XY plane. The width of the electrical component 22 in the XY plane may be larger than or smaller than half of the width of the internal space 92 in the XY plane. The width of the electrical component 22 in the XY plane may be the maximum width of the electrical component 22 in the XY plane, or may be the average width in the XY plane. The width of the internal space 92 in the XY plane may be the maximum width of the internal space 92 in the XY plane, or may be the average width in the XY plane.

[0045] One longitudinal end of the electrical component 22 is referred to as end E1, and the other longitudinal end is referred to as end E2. End E1 is the end of the electrical component 22 on the base portion 12 side. End E2 is the end of the electrical component 22 on the second holding portion 80 side. In this example, end E1 is inserted into the first hole portion 19, and end E2 is inserted into the second hole portion 84.

[0046] The side surface 24 of the electrical component 22 is a surface that connects the end E1 and the end E2. In this example, the side surface 24 extends along the Z-axis direction. In this example, a portion of the side surface 24 on the end E1 side is surrounded by the inner wall 18 of the first holding part 10 in the XY plane. In this example, a portion of the side surface 24 on the end E2 side is surrounded by the side wall 82 of the second holding part 80 in the XY plane.

[0047] The replacement component 50 is disposed in an internal space 92 formed by the first holder 10 and the cover 40. In this example, one end of one replacement component 50 in the Z-axis direction is inserted into the first insertion component 20, and the other end in the Z-axis direction is inserted into the second insertion component 90. The replacement component 50 is a component for maintaining the measurement function of the measuring device 100, and is preferably a component that is replaced or regenerated periodically. In this example, the replacement component 50 is a moisture-absorbing component.

[0048] The moisture absorbent may be fibrous and absorb moisture. The fibrous moisture absorbent is more likely to absorb moisture and heat. The fibrous moisture absorbent is more likely to have a higher moisture absorption rate than silica gel.

[0049] The moisture-absorbing member in this example is in sheet form. The sheet-shaped moisture-absorbing member is, for example, a nonwoven fabric. A nonwoven fabric is a sheet-shaped member made of fibers that are intertwined rather than woven. A nonwoven fabric is porous. For this reason, a nonwoven fabric has excellent moisture absorption and moisture retention properties.

[0050] Fig. 7 is a perspective view showing an example of the holding member 14. Fig. 8 is a top view of the first holding part 10 shown in Figs. 2 to 4. The holding member 14 may include a fastening part 17 (see Fig. 7). In this example, the holding member 14 is fastened to the first board 32 of the circuit board 30 (see Figs. 2 to 4) by the fastening part 17.

[0051] The length of the fastening portion 17 in the Z-axis direction may be smaller than the lengths of the inner wall 18 and the outer wall 16 in the Z-axis direction. The position of the lower end of the fastening portion 17 in the Z-axis direction may be the same as or different from the positions of the lower ends of the inner wall 18 and the outer wall 16 in the Z-axis direction. The outer wall 16 may surround more than half of the periphery of the inner wall 18 in the XY plane. The fastening portion 17 may be provided on a part of the periphery of the inner wall 18 where the outer wall 16 does not surround the periphery of the inner wall 18 in the XY plane, so as to face the inner wall 18 in the XY plane.

[0052] The first insertion portion 20 may be provided to surround at least a portion of the periphery of the electric component 22 when the electric component 22 is held by the first holding portion 10. The periphery of the electric component 22 refers to the periphery of the electric component 22 in a top view, that is, the periphery of a side surface 24 (see FIG. 6 ) of the electric component 22 in the XY plane. When a replacement component 50 (see FIG. 6 ) is inserted into the first insertion portion 20, the replacement component 50 may surround at least a portion of the periphery of the electric component 22.

[0053] The measuring device 100 may be placed in a high-temperature, high-humidity environment. When the measuring device 100 is placed in such an environment, water vapor may enter the internal space 92 of the measuring device 100, causing the internal space 92 to become hot and humid. In the measuring device 100, when the electric component 22 is held in the first holding portion 10, the first insertion portion 20 is arranged to surround at least a portion of the periphery of the electric component 22. Therefore, when the replacement component 50 (see FIG. 6 ) is inserted into the first insertion portion 20, the replacement component 50 surrounds at least a portion of the periphery of the electric component 22. Therefore, if the replacement component 50 is a moisture-absorbing material, the moisture-absorbing material may absorb moisture around the electric component 22. This may prevent the electric component 22 from failing due to the presence of moisture.

[0054] FIG. 9 is a diagram showing an example of the positional relationship between the electrical component 22 and the first insertion portion 20 in a top view. For ease of illustration, the first insertion portion 20 is shown in FIG. 9 with a solid line, and the outer wall 16 and the inner wall 18 are omitted. The first insertion portion 20 has a predetermined width in a top view, but is shown in FIG. 9 with a line that has no width. This line indicates the central position of the first insertion portion 20 in the width direction. The center of gravity of the geometric shape of the electrical component 22 in a top view is defined as the center of gravity C. If the electrical component 22 is a cylinder, the center of gravity C is the center of the circle of the electrical component 22 in a top view.

[0055] The intersection of a straight line S that starts from the center of gravity C and intersects with the first insertion portion 20 and the side surface 24 is referred to as an intersection point P. In FIG. 9, lines S1 and S2 are one line S and another line S that extend in the X-axis direction, and line S3 is a line S that forms an arbitrary angle greater than 0 degrees with the X-axis and Y-axis. In FIG. 9, lines S1 to S3 are indicated by dashed lines. The intersections of lines S1 to S3 with the side surface 24 are referred to as intersection points P1 to P3, respectively.

[0056] The first insertion portion 20 may be provided so as to surround at least 50% of the circumference of the electrical component 22 when the electrical component 22 is held by the first holding portion 10. The first insertion portion 20 surrounding at least 50% of the circumference of the electrical component 22 refers to a state in which the first insertion portion 20 is disposed on an extension of a straight line S at an outer edge having a length that is at least 50% of the circumference of the outer edge of the electrical component 22 in a top view (the circumference of the side surface 24 in the example of FIG. 9). In the example of FIG. 9, the outer edge having a length that is 50% of the circumference of the outer edge of the electrical component 22 is indicated by a thick line. A straight line S can be defined along the outer edge indicated by the thick line from intersection P1 via intersection P3 to intersection P2. When the straight line S is moved from intersection P1 to intersection P2, the first insertion portion 20 is disposed on an extension of each straight line S.

[0057] The first insertion portion 20 may be provided so as to surround at least a portion of the periphery of the first hole portion 19. The first insertion portion 20 may be provided so as to surround at least 50% of the periphery of the electrical component 22 when the electrical component 22 is held in the first holding portion 10. The definition of the first insertion portion 20 surrounding the periphery of the first hole portion 19 may be the same as the above definition of the first insertion portion 20 surrounding the periphery of the electrical component 22. In the example of FIG. 9 , an outer edge having a length that is 50% of the outer peripheral length of the first hole portion 19 is shown by a thick line.

[0058] FIG. 10 is a diagram illustrating another example of the positional relationship between the electrical component 22 and the first insertion portion 20 in a top view. In FIG. 10, the first insertion portion 20 is indicated by a solid line, as in FIG. 9, and the outer wall 16 and the inner wall 18 are not shown. FIG. 10 illustrates another example in which the first insertion portion 20 is provided to surround at least 50% of the circumference of the electrical component 22 when the electrical component 22 is held by the first holding portion 10. As shown in FIG. 10, the outer edge of the electrical component 22 that is 50% of the circumference of the outer edge (the circumference of the side surface 24 in the example of FIG. 10) does not have to be continuous. It is sufficient that the total length of the thick lines is at least 50% of the circumference of the outer edge of the electrical component 22 (the circumference of the side surface 24 in the example of FIG. 10).

[0059] 10 shows another example in which the first insertion portion 20 is provided to surround at least 50% of the circumference of the first hole portion 19. As shown in FIG. 10, the outer edge that is 50% of the circumference of the outer edge of the first hole portion 19 in top view does not have to be continuous. It is sufficient that the total length of the thick lines is at least 50% of the circumference of the outer edge of the first hole portion 19.

[0060] The first insertion portion 20 may be provided so as to surround at least 30% of the circumference of the electric component 22 when the electric component 22 is held in the first holding portion 10. In order to be able to effectively absorb water vapor around the electric component 22 when a replacement member 50 (see FIG. 6 ) is inserted into the first insertion portion 20, it is preferable that the first insertion portion 20 be provided so as to surround at least 30% of the circumference of the electric component 22. The first insertion portion 20 may be provided so as to surround at least 30% of the circumference of the first hole portion 19.

[0061] 11 is a diagram showing an example of the positional relationship between the electrical component 22 and the second board 34 and the first insertion portion 20 in a top view. In FIG. 11, as in FIGS. 9 and 10, the first insertion portion 20 is shown in solid lines, and the outer wall 16 and the inner wall 18 are omitted. In FIG. 11, the outer edges of the electrical component 22 and the second board 34 of the circuit board 30 in a top view are shown in thick solid lines and thick dashed lines. In this example, the center of gravity C is the center of gravity of the electrical component 22 and the second board 34 in a top view.

[0062] The first insertion portion 20 may be provided so as to surround at least a portion of the periphery of the electrical component 22 and at least a portion of the periphery of the circuit board 30 when the electrical component 22 is held by the first holding portion 10.

[0063] The intersection of a straight line S that starts at the center of gravity C and intersects with the first insertion portion 20 and the second substrate 34 is defined as an intersection point P'. In Fig. 11, a straight line S1' is a line that passes through one end of the second substrate 34 in the X-axis direction and the center of gravity C, and a straight line S2' is a line that passes through the other end of the second substrate 34 in the X-axis direction and the center of gravity C. The intersection point of the straight line S1' and the one end of the second substrate 34 is defined as an intersection point P1', and the intersection point of the straight line S2' and the other end of the second substrate 34 is defined as an intersection point P2'.

[0064] The first insertion portion 20 may be provided so as to surround at least 50% of the circumference of the electrical component 22 and at least 50% of the circumference of the circuit board 30 when the electrical component 22 is held by the first holding portion 10. "The first insertion portion 20 surrounding at least 50% of the circumference of the circuit board 30" refers to a state in which the first insertion portion 20 is positioned on an extension of the straight line S' at an outer edge of the circuit board 30 (the second board 34 in this example) that is at least 50% of the circumference of the outer edge of the circuit board 30 (the circumference of the side surface of the second board 34 in the example of FIG. 9) in a top view. As in the example of FIG. 10, the outer edge that is 50% of the circumference of the outer edge of the circuit board 30 in a top view does not have to be continuous.

[0065] The first insertion portion 20 may be provided so as to surround at least 30% of the circumference of the circuit board 30 when the electric component 22 is held in the first holding portion 10. In order to be able to effectively absorb water vapor around the circuit board 30 when the replacement part 50 (see FIG. 6) is inserted into the first insertion portion 20, it is preferable that the first insertion portion 20 be provided so as to surround at least 30% of the circumference of the circuit board 30.

[0066] When the replacement component 50 (see FIG. 6) is a moisture absorbing component, it is preferable that the moisture absorbing component has a higher moisture absorbing ability than the circuit board 30. This can suppress the circuit board 30 from absorbing water vapor.

[0067] In top view, the first insertion portion 20 does not have to be provided between the electrical component 22 and the first board 32 (in the Y-axis direction in the example of FIG. 11 ). Wiring or the like for electrically connecting the electrical component 22 and the circuit board 30 (first board 32) may be arranged between the electrical component 22 and the first board 32. For this reason, it is preferable that the replacement member 50 is not provided between the electrical component 22 and the first board 32.

[0068] 12 is a diagram showing another example of the positional relationship between the first insertion portion 20 and the electrical component 22 and the second board 34 when viewed from above. As shown in Fig. 12, the first insertion portion 20 may be provided so as to completely surround the electrical component 22 and the circuit board 30 when the electrical component 22 is held by the first holding portion 10. In order to effectively absorb water vapor around the electrical component 22 and the circuit board 30 when a replacement member 50 (see Fig. 6) is inserted into the first insertion portion 20, it is most preferable that the first insertion portion 20 be provided so as to completely surround the electrical component 22 and the circuit board 30.

[0069] The second insertion portion 90 may be provided so as to surround at least a portion of the periphery of the electric component 22 when the electric component 22 is held by the second holding portion 80. When the replacement component 50 (see FIG. 6 ) is inserted into the second insertion portion 90, the replacement component 50 may surround at least a portion of the periphery of the electric component 22. The second insertion portion 90 may be provided so as to surround at least a portion of the periphery of the second hole portion 84.

[0070] The second insertion portion 90 may be provided to surround at least 30% of the periphery of the electrical component 22, at least 50% of the periphery, or the entire periphery, when the electrical component 22 is held in the first holding portion 10. The definition of the second insertion portion 90 surrounding the periphery of the electrical component 22 may be the same as the definition of the first insertion portion 20 surrounding the periphery of the electrical component 22 (FIGS. 9 and 10). The second insertion portion 90 may be provided to surround at least 30% of the periphery of the first hole portion 19, at least 50% of the periphery, or the entire periphery.

[0071] The first insertion portion 20 and the second insertion portion 90 may be provided to surround at least a portion of the periphery of the electric component 22 and the circuit board 30. When the electric component 22 is held by the first holding portion 10, the second insertion portion 90 may be provided to surround at least 30% of the periphery of the electric component 22 and at least 30% of the periphery of the circuit board 30, or may be provided to surround at least 50% of the periphery of the electric component 22 and at least 50% of the periphery of the circuit board 30, or may be provided to surround the entire periphery of the electric component 22 and the circuit board 30. The definition of the second insertion portion 90 surrounding the periphery of the electric component 22 and the circuit board 30 may be the same as the definition of the first insertion portion 20 surrounding the periphery of the electric component 22 and the circuit board 30 ( FIGS. 11 and 12 ).

[0072] 13 is a cross-sectional view of a measuring device 200 of a comparative example. Measuring device 200 does not include a replacement part 50. In this respect, measuring device 200 differs from measuring device 100 of FIG. 6. In this example, first holding part 10 and cover part 40 form internal space 192.

[0073] FIG. 14 is a diagram showing an example of the change over time in temperature T of the environment in which measuring device 100 and measuring device 200 are placed. Time t1 is, for example, 60 minutes after time zero. Time t2 is, for example, 45 minutes after time t1. Time t3 is, for example, 35 minutes after time t2. Time t4 is, for example, 48 hours after time t3. Time t5 is, for example, 70 minutes after time t4. Time t6 is, for example, 60 minutes after time t5. Temperature T1 is, for example, 25°C. Temperature T2 is, for example, 70°C. In this example, the temperature is changed from time zero to time t6 as shown by the thick solid line.

[0074] FIG. 15 is a diagram showing an example of the change over time in humidity H of the environment in which measuring device 100 and measuring device 200 are placed. Times t1 to t6 are the same as times t1 to t6 in FIG. 14. Humidity H1 is, for example, 50%. Humidity H2 is, for example, 75%. In this example, the humidity is changed from time zero to time t6 as shown by the thick dashed line.

[0075] FIG. 16 shows an example of the results of measuring the change in humidity H over time in internal space 92 (see FIG. 6) and internal space 192 (see FIG. 13) when measuring devices 100 and 200 are subjected to the temperature changes in FIG. 14 and the humidity changes in FIG. 15. FIG. 16 shows the measurement results after measuring devices 100 and 200 are subjected to three cycles of the temperature changes in FIG. 14 and the humidity changes in FIG. 15. In FIG. 16, "No moisture-absorbent sheet" corresponds to measuring device 200, and "moisture-absorbent sheet A" and "moisture-absorbent sheet B" correspond to measuring device 100. The type of nonwoven fabric used in moisture-absorbent sheet A is different from the type of nonwoven fabric used in moisture-absorbent sheet B.

[0076] 16, the rate of increase in humidity H in measuring device 100 is lower than the rate of increase in humidity H in measuring device 200. It can be seen that the moisture-absorbing sheet in measuring device 100 is able to suppress the increase in humidity H in internal space 92.

[0077] FIG. 17 is a diagram showing another example of a cross section of measuring instrument 100. Measuring instrument 100 of this example further includes an electric component 22 and a replacement part 50. Replacement part 50 may be disposed in contact with at least a portion of side surface 24 of electric component 22. Using electric component 22 shown in FIG. 9 as an example, replacement part 50 may be disposed in contact with side surface 24 so as to surround at least 30% of the circumference of electric component 22 when viewed in the longitudinal direction of columnar electric component 22. "Replacement part 50 surrounding at least 30% of the circumference of electric component 22" refers to a state in which replacement part 50 is disposed in contact with side surface 24 at an outer edge that is at least 30% of the circumferential length of the outer edge of electric component 22 when viewed in the longitudinal direction of columnar electric component 22 (the circumferential length of side surface 24 in the example of FIG. 9). When viewed in the longitudinal direction of the columnar electrical component 22, the replacement member 50 may be positioned against the side surface 24 so as to surround at least 50% of the circumference of the electrical component 22, or may be positioned against the side surface 24 so as to surround the entire circumference.

[0078] In this example, the replacement element 50 is sheet-shaped. In this example, one surface 52 (described later) of the sheet-shaped replacement element 50 is arranged in contact with the side surface 24 of the columnar electric component 22. In this example, the electric component 22, with the sheet-shaped replacement element 50 arranged in contact with the side surface 24, is inserted into the first hole portion 19. In this example, the sheet-shaped replacement element 50 is not inserted into the first insertion portion 20. In this example, because one surface 52 (described later) of the sheet-shaped replacement element 50 is arranged in contact with the side surface 24 of the columnar electric component 22, the electric component 22 and the sheet-shaped replacement element 50 can be replaced together.

[0079] When the replacement component 50 is a moisture-absorbent sheet, the replacement component 50 may be positioned so as not to come into contact with the ends E1 and E2 of the electrical component. If the moisture-absorbent sheet absorbs water vapor and comes into contact with the ends E1 and E2, the performance of the electrical component 22 may deteriorate. For this reason, it is preferable that the moisture-absorbent sheet be positioned so as not to come into contact with the ends E1 and E2 of the electrical component.

[0080] The first hole 19 may be provided with an outlet 23 for discharging moisture. In this example, the outlet 23 is provided at the bottom of the first hole 19. If the replacement component 50 is a moisture-absorbent sheet and the moisture-absorbent sheet absorbs water vapor, moisture may accumulate in the first hole 19. If moisture accumulates in the first hole 19, the end E1 of the electrical component may corrode. By providing the outlet 23 in the first hole 19, moisture is less likely to accumulate in the first hole 19.

[0081] FIG. 18 is a schematic diagram of evaluation system 300 for evaluating the cooling performance of measuring device 100 and measuring device 200. Evaluation system 300 in this example includes thermostatic chamber 110, data logger 120, and computer 130. Measuring device 100 and measuring device 200 are disposed inside thermostatic chamber 110. The interior of thermostatic chamber 110 is a closed space separated from the outside of the thermostatic chamber. Data logger 120 acquires data on temperature T in internal space 92 of measuring device 100 (see FIG. 6) via a first thermocouple, and acquires data on temperature T in internal space 192 of measuring device 200 (see FIG. 13) via a second thermocouple. Computer 130 controls the acquisition of data by data logger 120.

[0082] FIG. 19 is a diagram showing an example of how the temperature T inside the thermostatic chamber 110 changes over time. Times t1 to t6 are the same as times t1 to t6 in FIG. 14. Time t7 is, for example, 20 minutes after time t6. Time t8 is, for example, 60 minutes after time t7. Time t9 is, for example, 45 minutes after time t8. Time t10 is, for example, 48 hours after time t9. Temperatures T1 and T2 are the same as temperatures T1 and T2 in FIG. 14, respectively. Temperature T0 is, for example, 2°C. In this example, the temperature T inside the thermostatic chamber 110 is changed from time zero to time t10, as shown by the thick solid line.

[0083] Time ta is any time between time t3 and time t4. Time tb is any time between time t9 and time t10. Time tc is any time between time tb and time t10.

[0084] FIG. 20 is a diagram showing an example of the change in humidity H over time inside the thermostatic chamber 110. Times t1 to t10 are the same as times t1 to t10 in FIG. 19, respectively. Times ta, tb, and tc are the same as times ta, tb, and tc in FIG. 19, respectively. Humidity H1 and humidity H2 are the same as humidity H1 and humidity H2 in FIG. 15, respectively. Humidity H0 is, for example, 10%. In this example, the humidity was changed from time zero to time t10 as indicated by the thick dashed line. In this specification, the period from time t3 to time ta in FIGS. 19 and 20 is referred to as the high-temperature, high-humidity condition, the period from time ta to time tb is referred to as the temperature increase / decrease condition, and the period from time tb to time tc is referred to as the high-temperature, low-humidity condition.

[0085] 21 to 23 show examples of the results of measuring the change over time in temperature T' of internal space 92 of measuring device 100 and internal space 192 of measuring device 200. Fig. 21 shows the measurement results under the high-temperature, high-humidity conditions of Figs. 19 and 20, Fig. 22 shows the measurement results under temperature fluctuating conditions, and Fig. 23 shows the measurement results under high-temperature, low-humidity conditions. In Figs. 21 to 23, replacement part 50 of measuring device 100 is a moisture-absorbing sheet.

[0086] As can be seen from FIG. 21 , under high-temperature, high-humidity conditions, the temperature T′ of the internal space 92 of the measuring device 100 was lower than the temperature T′ of the internal space 192 of the measuring device 200. In this measurement result, the temperature difference ΔT′ was 0.7°C in the latter half of the period from time t3 to time ta. Under high-temperature, high-humidity conditions, the moisture-absorbent sheet of the measuring device 100 absorbs moisture. This tends to increase the thermal resistance transferred from the surroundings of the electrical component 22 to the electrical component 22. Therefore, under high-temperature, high-humidity conditions, the moisture-absorbent sheet can function as a coolant. Therefore, under high-temperature, high-humidity conditions, it is easier to prevent the lifespan of the electrical component 22 from being shortened due to the heat generated by the electrical component 22.

[0087] As the temperature fluctuates under the temperature conditions of Figure 22 and approaches high-temperature, low-humidity conditions (Figure 23), moisture release from the moisture-absorbing sheet tends to become more active. In Figure 22, this process is shown as the "moisture release process." As this moisture release occurs, the internal space 92 of the measuring device 100 tends to cool. As a result, the temperature difference ΔT' between the temperature T' of the internal space 92 of the measuring device 100 and the temperature T' of the internal space 192 of the measuring device 200 reached a maximum value. This maximum value was 16°C.

[0088] As can be seen from Figure 23, under high-temperature, low-humidity conditions, the temperature T' of the internal space 92 of the measuring device 100 was lower than the temperature T' of the internal space 192 of the measuring device 200. However, as the moisture-absorbent sheet releases moisture over time, its function as a coolant tends to decrease. For this reason, the temperature difference ΔT' tended to decrease over time. In this measurement, the temperature difference ΔT' was 0.73°C in the latter half of the period from time tb to time tc.

[0089] 24 is a diagram illustrating a portion of an electric component 22 and a replacement component 50 disposed in contact with a side surface 24 of the electric component 22, as viewed from above. In FIG. 24, the replacement component 50 is indicated by hatching. In this example, one surface 52 of the sheet-like replacement component 50 is disposed in contact with the side surface 24 of the electric component 22, and the other surface 54 of the replacement component 50 is in contact with the internal space 92. The position of the one surface 52 in the thickness direction of the sheet-like replacement component 50 is designated as position u1, and the position of the other surface 54 is designated as position u2.

[0090] FIG. 25 is a diagram showing an example of the relationship between the position in the thickness direction of the exchange element 50 and the moisture absorption Q of the exchange element. The moisture absorption Q at position u1 is designated as moisture absorption Q1, and the moisture absorption Q at position u2 is designated as moisture absorption Q2. In this example, the moisture absorption Q on one surface 52 is lower than the moisture absorption Q on the other surface 54. The moisture absorption Q of the exchange element 50 may decrease from position u2 to position u1. In this example, the moisture absorption Q on one surface 52 is lower than the moisture absorption Q on the other surface 54, so less moisture can come into contact with the exchange element 50 than if the moisture absorption Q were uniform in the thickness direction of the exchange element 50. If it is preferable to avoid contact between the side surface 24 of the exchange element 50 and moisture, it is preferable that moisture absorption Q1 be lower than moisture absorption Q2.

[0091] FIG. 26 is a diagram showing another example of the relationship between the position in the thickness direction of the exchange component 50 and the moisture absorption Q of the exchange component. In this example, the moisture absorption Q on one surface 52 is higher than the moisture absorption Q on the other surface 54. The moisture absorption Q of the exchange component 50 may increase from position u2 to position u1. In this example, the moisture absorption Q on one surface 52 is higher than the moisture absorption Q on the other surface 54. This increases the heat absorption Q of the portion of the electrical component 22 that comes into contact with the exchange component 50 (the side surface 24 in this example) compared to when the moisture absorption Q is uniform in the thickness direction of the exchange component 50. This makes it easier for the exchange component 50 to absorb heat generated by the electrical component 22. If there is no problem with moisture coming into contact with the side surface 24 of the exchange component 50, the moisture absorption Q1 may be higher than the moisture absorption Q2.

[0092] FIG. 27 is a diagram showing another example of a cross section of measuring device 100. In measuring device 100 of this example, replacement member 50 is provided on inner wall 45 of cover portion 40. This is where this example differs from measuring device 100 shown in FIG. 6. At least a portion of replacement member 50 may be provided on inner wall 45 of cover portion 40. As shown in FIG. 27, replacement member 50 may be provided on inner wall 45 of cover portion 40.

[0093] Although the present invention has been described above using embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various modifications and improvements can be made to the above embodiments. It is clear from the claims that such modifications and improvements can also be included within the technical scope of the present invention.

[0094] It should be noted that the execution order of each process, such as operations, procedures, steps, and stages, in the devices, systems, programs, and methods shown in the claims, specifications, and drawings is not specifically stated as "before," "prior to," etc., and that the processes can be performed in any order unless the output of a previous process is used in a subsequent process. Even if the operational flow in the claims, specifications, and drawings is described using "first," "next," etc. for convenience, this does not mean that the processes must be performed in this order. [Explanation of symbols]

[0095] 10 first holding portion, 12 base portion, 14 holding member, 16 outer wall, 17 fastening portion, 18 inner wall, 19 first hole portion, 20 first insertion portion, 22 electrical component, 23 exhaust port, 24 side surface, 30 circuit board, 32 first board, 34 second board, 36 antenna, 38 sensor, 40 cover portion, 42 Housing, 45...inner wall, 50...replacement part, 52...one side, 54...other side, 80...second holding portion, 82...side wall, 84...second hole portion, 90...second insertion portion, 92...internal space, 100...measuring instrument, 110...thermostat, 120...data logger, 130...computer, 192...internal space, 200...measuring instrument, 300...evaluation system

Claims

1. a first holding portion that holds the electrical component; a cover portion that houses the electrical component and the first holding portion; Equipped with The first holding portion is provided with a first insertion portion into which the replacement member is inserted. Measuring instrument.

2. The measuring instrument according to claim 1 , wherein the first holding portion holds the electrical component in a replaceable manner.

3. The measuring instrument according to claim 1 , wherein the first insertion portion is provided so as to surround at least a portion of the periphery of the electrical component when the electrical component is held by the first holding portion.

4. a circuit board electrically connected to the electrical component; 4. The measuring instrument according to claim 3, wherein the first insertion portion is arranged to surround at least a portion of the periphery of the electrical component and at least a portion of the periphery of the circuit board when the electrical component is held by the first holding portion.

5. the cover portion has a second holding portion that holds the electrical component, The second holding portion is provided with a second insertion portion into which the replacement member is inserted. The measuring device according to any one of claims 1 to 3.

6. the electrical component has a columnar shape having a longitudinal direction, The first holding portion is provided with a first hole portion into which one end portion in the longitudinal direction of the columnar electrical component is inserted. The measuring device according to any one of claims 1 to 3.

7. The measuring instrument according to claim 6 , wherein the first insertion portion is arranged to surround at least a portion of the periphery of the first hole portion when viewed in a direction from the cover portion to the first holding portion.

8. The measuring device according to claim 1 , wherein the replacement member is made of moisture-absorbing fibrous material.

9. a first holding portion that holds the electrical component; a circuit board electrically connected to the electrical component; a moisture absorbing member formed of a material having a higher moisture absorption rate than the circuit board; a cover portion that accommodates the electrical component, the first holding portion, the circuit board, and the moisture absorbent member; A measuring instrument comprising:

Images