JP6562449B2 - measuring device - Google Patents

Description

  The present invention relates to a measuring apparatus that measures temperature, humidity, and the like, and, for example, relates to a measuring apparatus that has a simple structure and stable measurement accuracy.

  In greenhouse horticulture and crop cultivation, in order to grasp the environment related to growth, it is necessary to accurately measure the temperature as basic data. However, there is an effect of radiation in temperature measurement, and it becomes a very large error factor when measuring outdoors or in a garden facility where natural wind is weak using simple radiation avoidance (non-ventilation type). Moreover, since this error is accumulated when measuring the integrated temperature used in plant physiology, growth analysis, etc., there arises a problem that inaccuracy is amplified.

  On the other hand, a ventilation type measuring device for weather observation is used for accurate temperature measurement, but these are generally expensive, so it cannot be said that they are sufficiently spread even in horticultural facilities and cultivation research scenes. In addition, since a ventilation device requires power to constantly drive a powerful fan for ventilation, a low-power measurement device that can be operated with a solar cell is desired in an environment where a commercial power source is difficult to use such as a mountain area. ing.

  Further, as a conventional temperature measuring device for measuring this type of temperature, there is a field server 10 for long-term humidity measurement, which includes a measurement chamber 11, an outside air suction chamber 12, an outside air intake preparatory chamber 13, and a hygroscopic chamber. When the electric fan 12a in the outside air suction chamber 12 rotates, the outside air is sucked from the two outside air intake holes 13c of the outside air intake preparatory chamber 13 and passes through the filter portion 14, The outside air is introduced into the measurement chamber 11, passes through the internal humidity sensor 11x and the internal temperature sensor 11y, is discharged to the outside through the outer peripheral gap of the upper lid 11r, and the airflow flows upward from below (for example, Patent Document 1).

JP 2008-64591 A

  By the way, in the air temperature measuring device having the above structure, the outside air introduced by the electric fan 12a is discharged from the outside air intake preparatory chamber 13 through the filter unit 14, the outside air suction chamber 12, and the measuring chamber 11 to the outside. However, there has been a problem that the apparatus cost becomes high. Further, since the outside air taken into the outside air taking-in preliminary chamber 13 is taken into the wide space from the two outside air taking holes 13c, 13c, the air inside the space is retained and the temperature distribution is not constant, There is a problem that the external airflow is not stable, which may affect the measurement accuracy of temperature and humidity. Furthermore, the introduction path of the outside air is complicated, and the electric fan must have a high output.

  The present invention has been made in view of such problems, and the object of the present invention is to simplify the structure by simplifying the air introduction path and reduce the cost. Ventilation of the internal air in the installed space stabilizes the inflowing air flow and makes the temperature distribution constant in the space where the sensor or sensor sensing unit is installed, improving measurement accuracy and speed. An object of the present invention is to provide a measuring apparatus capable of measuring. It is another object of the present invention to provide a measuring apparatus that can be driven with low power.

  In order to achieve the above object, a measuring apparatus according to the present invention includes a sensor that measures temperature, humidity, and the like of air with a sensitive part, a case that accommodates the sensor or the sensitive part, and an air in the sensor or the sensitive part. A fan that introduces an impeller, the fan includes a cylindrical opening that includes an impeller, the case has a flat plate portion at the bottom, and a vent hole is formed in the flat plate portion, and the fan has the cylindrical shape. The entrance side of the opening is fixed according to the vent hole.

  In the measuring device of the present invention configured as described above, since the cylindrical opening for introducing the air of the fan is fixed in accordance with the air hole formed in the flat plate portion of the case, the flow path for introducing the air Is unnecessary, and air can be directly introduced from the outside of the case. For this reason, the surroundings of the sensor or the sensitive part are quickly ventilated, and the ambient temperature, humidity, etc. can be measured accurately and quickly. Further, since the configuration is simple and the flow path of the air to be introduced is unnecessary, the cost can be reduced and a small and low-power fan can be adopted.

  Moreover, as a preferable specific aspect of the measuring apparatus according to the present invention, the fan is an axial fan, and the outlet side of the cylindrical opening is arranged to face the sensor or the sensing part. It is a feature. According to this configuration, the fluid resistance at the time of introducing air can be reduced by fixing the fan by aligning the cylindrical opening of the axial fan with the vent hole formed in the bottom of the case. Moreover, the introduced air can be quickly measured by the sensor or the sensing part by making the cylindrical opening for blowing air face the sensor or the sensing part.

  As another preferred specific embodiment of the measuring apparatus according to the present invention, the case has a central space portion formed by an upper member located at an upper portion and a through-hole located at an intermediate portion and formed at a central portion. An intermediate member and a lower member that is positioned below and constitutes the flat plate portion are stacked at a predetermined interval, and the sensor or the sensing portion is disposed in a central space portion of the intermediate member. Yes.

  In the measuring apparatus configured as described above, air is introduced into the central space portion formed in the central portion of the intermediate member by the fan directly fixed in accordance with the vent hole of the lower member, and thus is disposed in the central space portion. The surroundings of the sensor or the sensing part are ventilated, and the ambient temperature, humidity, etc. can be measured accurately and quickly. Moreover, the configuration of the case is simple, the manufacturing becomes easy, and the cost can be reduced.

  Furthermore, as another preferable specific aspect of the measuring apparatus according to the present invention, the upper member, the intermediate member, and the lower member are formed of 2 to 3 resin plate materials, and the case includes the upper member and the intermediate member. The member and the lower member are connected by a plurality of shafts having a predetermined length and are stacked at a predetermined interval. In the measuring apparatus configured as described above, the upper member, the intermediate member, and the lower member are connected and fixed at a predetermined interval via a plurality of shafts. The air flow can be simplified and the configuration can be simplified. And by constituting the upper member, the intermediate member and the lower member from two to three resin plate materials, the air can be efficiently sucked and discharged by the fan, and the volume of the central space portion can be increased. A sensor to be arranged can be freely selected. Further, if the upper member, the intermediate member, and the lower member are formed of a resin plate material, the shafts of the members can be integrated, and the number of parts can be reduced.

  Moreover, it is preferable that the upper member located in the uppermost part among upper members is comprised by the upward convex convex cone surface, an inclined surface, or a curved surface. According to this configuration, since raindrops do not remain on the upper part of the case during rainy weather, drainage can be improved to prevent water from entering the case, and the durability of the measuring apparatus can be improved.

  Furthermore, the upper member, the intermediate member, and the lower member preferably have an outer peripheral edge inclined outwardly downward. According to this configuration, raindrops flowing from the upper part of the case during rainy weather are drained toward the outside, preventing water from entering the case. The upper member or the lower member preferably includes a support member that supports or fixes the case. According to this configuration, the measuring device can be easily installed outdoors or indoors via the support member.

  The measurement apparatus preferably includes a solar cell panel that supplies power to the sensor and the fan. According to this configuration, the measuring device can be driven using the electric power generated by the solar cell panel, and installation in an environment without a commercial power source is possible. Furthermore, it is preferable that the vent has a mesh for preventing foreign matter from entering. According to this configuration, when air is introduced into the case, foreign matter is prevented from entering, and the accuracy of the measuring apparatus and the durability can be improved.

  In the measuring apparatus of the present invention, since the inlet side of the cylindrical opening portion in which the impeller for introducing and blowing the air of the fan is installed is fixed according to the vent hole of the case, the air is introduced. This eliminates the need for such a flow path, simplifies the configuration, and allows the temperature and humidity of the introduced air to be measured quickly and accurately. Moreover, since the fluid resistance of the introduced air can be reduced, a low-power fan can be employed.

  Furthermore, the upper member, the intermediate member, and the lower member constitute a case, the sensor or the sensor sensing portion is arranged in the central space of the intermediate member, and the fan is fixed to the vent hole of the lower member, thereby simplifying the configuration. be able to. Since the central space is forcibly ventilated by the fan, the air around the sensor or the sensor's sensitive part arranged in the central space is replaced, and the temperature, humidity, etc. can be measured quickly and accurately. Furthermore, since the air flow path can be simplified, a low-power fan can be used.

1 is a schematic perspective view of an embodiment of a measuring apparatus according to the present invention. The front view of the measuring apparatus of FIG. AA sectional view taken on the line AA of FIG. BB sectional drawing of FIG. The perspective view of the state which decomposed | disassembled the case of FIG. The perspective view which shows the principal part structure of the installation state of the sensor and fan of FIG. The perspective view which shows the principal part structure of the other installation state of a sensor and a fan. An example of the fixed state of the measuring apparatus which concerns on this invention is shown, (a) is the side view, (b) is a perspective view of a disassembled state. The other example of the fixed state of the measuring apparatus which concerns on this invention is shown, (a) is the side view, (b) is the perspective view of a disassembled state, (c) is the perspective view of the disassembled state of another example. The graph which shows the measurement data of 1 day of the measuring apparatus which concerns on this invention. The graph figure which shows the difference | error of the measurement data on the 1st of the measuring apparatus which concerns on this invention. The perspective view which shows the decomposition | disassembly state of other embodiment of the measuring apparatus which concerns on this invention.

  Hereinafter, an embodiment of a measuring apparatus according to the present invention will be described in detail with reference to the drawings. 1 is a schematic perspective view of a measuring apparatus according to the present embodiment, including a sensor and a fan, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a cross section taken along line AA of FIG. 4 is a cross-sectional view taken along line BB of FIG. 3, and FIG. 5 is an exploded perspective view of the case of FIG. 1 including a sensor and a fan.

  1 to 5, a measuring device 1 includes a sensor 2 that measures the temperature, humidity, and the like of air with a sensing part 2a, a case 10 that houses the sensor 2 or the sensing part 2a of the sensor, and a sensor 2 or a sensing part of the sensor. And a fan 5 for introducing air into 2a. As the sensor 2, a sensor that measures the temperature of air, a sensor that measures the humidity of air, a sensor that measures the temperature and humidity of air, or the like is used. In this embodiment, a device for measuring the temperature and humidity of air is used. The measuring device 1 introduces ambient air into the case 10 with a fan 5 to measure the temperature of the ambient air, and the fan 5 is preferably an axial fan. The case 10 is preferably formed in white in consideration of being installed under the hot sun.

  The case 10 that accommodates the sensor 2 has upper members 11 and 12 positioned at the upper part, intermediate members 13, 14, and 15 that are positioned at the intermediate part and penetrate the central part, and a vent hole at the central part that is positioned at the bottom part. The lower members 16 and 17 are laminated at a predetermined interval. In this embodiment, it is composed of seven members: two upper members, three intermediate members, and two lower members. These seven members 11 to 17 are formed in a rectangular shape having four corners formed by arcs in a plan view, the outer peripheral edge portion is inclined outwardly downward, and is an outer peripheral inclined surface. It has the same shape.

  The upper member 11 located at the uppermost portion is configured by a conical surface, an inclined surface, a curved surface, or the like having a convex central portion 11a. For example, when it rains, raindrops are transmitted from the central portion to the outer peripheral inclined surface 11b, so It has a shape that flows down. The upper member 11 is formed with three shaft portions 11c projecting upward from the central portion 11a, and the center of the shaft portion is a through hole through which a connecting shaft 18 for connecting and fixing seven members passes. It has become. In the present embodiment, three shaft portions 11c are formed, but it is needless to say that four or more shaft portions may be used.

  Six members other than the uppermost upper member 11, that is, the upper member 12, the intermediate members 13, 14, 15, and the lower members 16, 17 are flat plate portions 12 a to 17 a with a flat central portion and the outer peripheral edge portion is directed downward. The outer peripheral inclined surfaces 12b to 17b. The upper member 12 that is second from the top is formed with three shaft portions 12c that protrude upward from the central flat plate portion 12a, and the center of the shaft portion is a through-hole through which the connecting shaft passes. .

  When the members 11 to 17 are stacked and connected, the length of the shaft portion can be ventilated from each flat plate portion toward the outer peripheral inclined surface, and the lower end of the outer peripheral inclined surface is a flat plate of the lower member. It is formed in a predetermined length so as to be lower than the portion. Specifically, it is preferable that the vertical thickness of each of the members 12 to 17 is set constant, and the shaft portion is set to a length shorter than this thickness. Since the case 10 is laminated such that the lower end of the outer peripheral inclined surface of the upper member is positioned lower than the flat plate portion of the lower member, the case 10 has a structure that prevents raindrops from entering during rain.

  The third intermediate member 13 from the top is formed in the flat plate portion 13a at the center, the outer peripheral edge portion is formed in the outer peripheral inclined surface 13b inclined outwardly downward, and the second upper member 12 in the flat plate portion. The three shaft portions 13c are formed at the same positions as in FIG. 1, and the central space portion 13d is formed by a through hole formed in the central portion of the flat plate portion. The shape of this through hole is a rectangle with four corners formed by arcs.

  The fourth intermediate member 14 and the fifth intermediate member 15 from the top have the same shape as the third intermediate member 13. That is, the intermediate members 14 and 15 are formed with the flat plate portions 14a and 15a at the center, the outer peripheral edge portions are formed on the outer peripheral inclined surfaces 14b and 15b inclined outward and downward, and the flat plate portions each have three pieces. Shaft portions 14c and 15c are formed. Central space portions 14d and 15d are formed by through holes formed in the central portions of the flat plate portions 14a and 15a. Therefore, the central space portion of the case 10 of this embodiment is formed as central space portions 13d to 15d having a height penetrating through three of the three intermediate members 13 to 15. The central space portions 13 d to 15 d communicate with the outside of the case 10 through a gap between the upper member 12 above, the three intermediate members 13 to 15, and the lower member 16 below.

  The sixth lower member 16 from the top has a central portion formed in the flat plate portion 16a, and an outer peripheral edge portion formed on the outer peripheral inclined surface 16b inclined downward toward the lower side. The three shaft portions 16c are formed at the same positions as in FIG. 1, and a vent hole 16d is formed through the central portion of the flat plate portion. The vent hole 16d is formed in a circular shape. The seventh lower member 17 from the top has the same shape as that of the sixth lower member 16, and is formed with a flat plate portion 17a at the center and an outer peripheral inclined surface 17b at the outer peripheral edge. A shaft portion 17c is formed, and a vent hole 17d is formed through the central portion. A mesh 17e for preventing foreign matter mixing is fixed outside the vent hole 17d.

  The fan 5 is directly contacted and fixed to the lower member 17 located at the bottom. That is, the center of the lower member 17 constituting the case 10 is a flat plate portion 17a, and a vent hole 17d is formed in the flat plate portion. The fan 5 is preferably an axial fan, and includes a cylindrical opening 5b (see FIG. 6) in which an impeller 5a is housed. As shown in FIGS. 6 and 7, the inlet side of the cylindrical opening 5 b is brought into direct contact with the flat plate portion 17 a at the center of the lower member 17, and the cylindrical opening 5 b and the vent hole 17 d are combined to form the fan 5. Is fixed to the lower member 17. For this reason, the introduction channel is not required for the fan 5, and when the fan 5 sucks the outside air, the air is introduced through the vent hole 17d that directly communicates with the cylindrical opening 5b. Since the fan 5 does not have an introduction flow path, the fluid resistance when air is sucked is small, and the outside air can be sufficiently introduced even by a low-power fan.

  The measuring apparatus 1 includes the above-described upper members 11, 12, intermediate members 13, 14, 15, and lower members 16, 17, and three connections in the through holes of the shaft portions 11 c to 17 c of the members 11 to 17. The case 10 is completed by connecting through the shaft 18 and fixing with the thumbscrew 18a. At this time, the fan 5 is fixed to the lower member 17 according to the vent hole 17d in advance, and the sensor 2 or the sensor sensing portion 2a is disposed in the central space portions 13d to 15d of the intermediate members 13, 14, and 15. Keep it. The arrangement of the sensor 2 in the central space is fixed using simple suspension, tape fastening, screw fastening, or the like. In addition, you may fix using a nut instead of a thumbscrew.

  The fan 5 is fixed to the lower hole 17d of the lower member 17 in alignment with the center of the vent hole 17d, and the fan 5 is energized to the central motor portion to rotate the impeller 5a. It is an axial fan that forms an air flow upward, and includes a cylindrical opening 5b in which an impeller 5a is housed. In this embodiment, as shown in FIG. 6, the fan 5 takes in the air around the lower lower member 17 from the vent hole 17d as indicated by the arrow Y1, and passes it through the fan cylindrical opening 5b. As shown in FIG. 3, air is introduced into the central space portions 13 d to 15 d through the vent holes 16 d of the lower member 16 thereon, passes through the sensor 2 accommodated in the case 10, and each of the members 11 to 17 is It is an air supply type that discharges along the arrow Y2 in the outer circumferential direction from the gap. 6 and 7, the ventilation holes of the lower member 16 are omitted. The central space portions 13d to 15d in which the sensor 2 of the case 10 is arranged reduce the influence of direct sunlight by the two upper members 11 and 12 located at the upper portion, and the outer peripheral inclined surfaces 11b to 17b on the outer periphery of each member. Because radiation is avoided so that it is not exposed to direct sunlight from the sun, the influence on the measured temperature and humidity is reduced.

  The sensor 2 for measuring the temperature and humidity of air incorporates the sensor's sensitive part 2a in the main body and is accommodated in the central space parts 13d to 15d of the three intermediate members 13 to 15 located in the middle of the case 10. Is arranged. And the exit side of the cylindrical opening part 5b which equipped the impeller 5a of the fan 5 and the sensor 2 are arrange | positioned facing. In this embodiment, as shown in FIG. 6, the sensor 2 itself is arranged in the central space portion. However, as shown in FIG. 7, the main body 2 b of the sensor 2 is arranged in another place, and the sensor sensing portion 2 a. May be arranged in the central space. Even when the sensitive part 2a of the sensor 2 is arranged in the central space parts 13d to 15d, the air taken in from the lower side as indicated by the arrow Y1 is bent in the outer peripheral direction by the central space parts 13d to 15d, and each case 10 It discharges | emits along the arrow Y2 to the outer peripheral direction from the clearance gap between the members 11-17.

  In the measuring apparatus 1 of the present invention, air is introduced into the central spaces 13d to 15d in the case 10 by the fan 5, and the air introduced through the fan cylindrical opening 5b is the outlet of the fan cylindrical opening 5b. In order to quickly reach the sensor 2 facing the side, change the direction in the central space portion, and exhaust the air introduced into the central space portion from the plurality of gaps in which a plurality of members are stacked, The air flow path is very simple. For this reason, the fluid resistance when passing through the flow path is small, and even if a small fan 5 is adopted, sufficient ventilation is possible, and a low-power fan can be used.

  The measuring apparatus 1 according to the present invention includes upper members 11 and 12, intermediate members 13 to 15, and lower members 16 and 17, and the sensor 2 or the sensor sensitive portion 2 a is disposed in the central space portions 13 d to 15 d of the intermediate member. However, the fan 5 is simply fixed in accordance with the vent holes 16d and 17d of the lower members 16 and 17, and can be easily manufactured. Further, even in a multilayer structure, since common parts can be used, the cost can be reduced. Furthermore, the upper members 11 and 12, the intermediate members 13 to 15, and the lower members 16 and 17 have outer peripheral edges that are inclined downwardly toward the outside. Intrusion can be prevented.

  Next, support or fixation of the measuring apparatus 1 configured as described above will be described with reference to FIGS. The measuring apparatus 1 configured as described above includes a case 10 in which upper members 11 and 12, intermediate members 13, 14 and 15, and lower members 16 and 17 are stacked and fixed. In the fixing example of FIG. The support member 21 is fixed to the three shaft portions 11c protruding from the upper portion of the upper member 11 with the connecting shaft 18 and the butterfly screw 18a, etc., and the vertical surface 21a of the support member 21 is brought into contact with the wall surface of the building, for example. It can be fixed with etc. At this time, a solar cell panel to be described later can be fixed to the inclined surface 21b of the support member.

  9 (a) and 9 (b), the wing screw 18a sandwiches the support member 22 below the connecting shaft 18 that connects and fixes the upper member, the intermediate member, and the lower member constituting the case 10 of the measuring apparatus 1. Secure with. The measuring device 1 can be fixed via the support member 22. The support member 22 has a through hole 22 a for opening a vent hole (not shown) formed in the lower member of the case 10. In the fixing example of FIG. 9C, the horizontal portion 23a of the support member 23 bent in an L shape is fixed to the shaft portion of the upper member in the case 10 of the measuring apparatus 1, and the vertical portion 23b is fixed to the wall surface of the building or the square. It can be fixedly attached to a column having a cross section.

  The operation of the measuring apparatus 1 of the present embodiment configured as described above will be described below. When the fan 5 fixed to the lower member 17 of the measuring device 1 is energized, the impeller 5a of the fan 5 rotates to take in the air below the case 10 from the vent hole 17d and pass it through the upper vent hole 16d. Air is introduced into the spaces 13d to 15d. In the central space, the sensor 2 is disposed so as to face the cylindrical opening 5b of the fan 5, and the air introduced by the fan 5 quickly reaches the sensor 2 and measures temperature and humidity. The direction of the introduced air is changed in the outer peripheral direction, and is discharged to the outer periphery of the case 10 through the gap between the upper member 12, the three intermediate members 13 to 15 and the lower member 16. Thus, since the measuring device 1 of the present invention can forcibly take in the ambient air below the case 10 into the case 10 with the fan 5, and can quickly measure the temperature and humidity of the introduced air. Changes in ambient temperature and humidity can be measured quickly and accurately. Moreover, since the air under the case 10 is taken in, it is hard to be influenced by solar radiation, and high temperature air can be prevented from being taken in. Furthermore, since the introduced air reaches the sensor 2 directly, the influence of the temperature rise of the fan 5 can be reduced.

  In FIG. 10, FIG. 11, the measurement data which implemented the temperature measurement for one day, for example in a vinyl room with the measuring apparatus 1 which concerns on this invention are shown. In FIG. 10, the upper data is the daily temperature measurement data in the case of natural ventilation without a fan, and the lower data shows the data forcibly blowing air with the prototype fan. In FIG. 10, the temperature data for one day in the case of natural ventilation without an upper fan is around 25 ° C. before 6 o'clock, about 35-40 ° C. during the day, and 25 after 21 o'clock at night. It shows about ℃. In addition, the data of prototypes using fans has remained low compared to natural ventilation.

  FIG. 11 is a graph showing the time variation of the error temperature in which air was forcibly blown by a prototype fan. With natural ventilation without using a fan, the error temperature was 2 to 6 degrees from around 10:00 to after 15:00. In contrast to the range, in the case of a prototype using a fan, it is generally in the range of about plus or minus 1 degree.

  As is clear from FIGS. 10 and 11, in the case of natural ventilation without using a fan, the error temperature is in the range of 2 to 6 degrees from around 10 o'clock to past 15 o'clock, whereas in the case of a prototype using a fan Is in the range of about plus or minus 1 degree, and the superiority of the prototype measuring device 1 is clear. As described above, when the central space portions 13d to 15d in which the sensor 2 or the sensor sensing portion 2a is installed are forcibly ventilated by the fan 5, the measurement error is reduced, and the temperature change can be measured quickly and accurately.

  When the fan 5 fixed to the case 10 is stopped in the measuring device 1, the forced ventilation by the fan 5 is stopped. When the fan 5 stops, ventilation by natural convection is performed. In addition, when there is a natural wind flow around the measuring apparatus 1, for example, the natural wind flow passes through a gap on the outer periphery of the central space portions 13d to 15d, and the air in the central space portions 13d to 15d is discharged. Therefore, air flows from the vent holes 17d and 16d below the case 10 and is discharged together with the air flow, and the air in the case 10 is discharged by natural convection. Therefore, the sensor 5 measures the temperature and humidity of the air flowing in. be able to. However, if the natural wind is weak, the effect is not expected.

  Compared with the measurement device that circulates air by natural convection, the measurement device 1 of the present invention forcibly ventilates from below with the fan 5, so that the central space portions 13 d to 15 d of the sensor 2 or the sensor sensitive portion 2 a are located. Since air circulates quickly, measurement accuracy is improved and rapid measurement is possible. Specifically, when continuously measuring the ambient temperature or the like where the measuring apparatus 1 is installed at short time intervals, the followability of the ambient temperature change is improved, and accurate measurement is possible.

  Moreover, the measuring apparatus 1 of this invention has the two upper members 11 and 12 above the center space parts 13d-15d in which the sensor 2 or the sensor sensitive part 2a is installed, and an air layer in the middle of the two upper members. Therefore, when installed in an environment that receives direct sunlight or the like, the intermediate air layer can exert a heat insulating function to reduce the influence of direct sunlight. If the upper member is increased to have three configurations, the influence of solar radiation can be further reduced.

  Another embodiment of the present invention will be described in detail with reference to FIG. FIG. 12 is a perspective view showing an exploded state of another embodiment of the measuring apparatus according to the present invention. In addition, this embodiment is characterized in that the measurement apparatus includes a solar cell panel that supplies power to the fan and also supplies power to the sensor, in contrast to the above-described embodiment. Other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof is omitted.

  The measuring apparatus 1 </ b> A of the present embodiment includes a solar cell panel 30. The measuring apparatus 1A has the same configuration as the measuring apparatus 1 described above. And the solar cell panel 30 supplies electric power to the sensor 2 and the fan 5, and is fixed together with the case 10A of the measuring apparatus 1A, for example, to the support column 25 whose lower end is embedded in the ground. Three shaft portions 11c protrude from the upper member 11 constituting the case 10A of the measuring apparatus 1A, and a support member 26 bent from a metal plate is fixed to the shaft portion. 26 is fixed to the column 25 with two clamp fittings 27 and nuts.

  Further, a support member 28 is fixed to the support column 25 with two clamp fittings 29 and nuts, a solar cell panel 30 is fixed to the inclined portion of the support member 28, and a power supply box 31 is installed on the flat plate portion. For example, a storage battery is provided in the power supply box 31 and the power generated by the solar battery panel 30 is charged. In FIG. 12, the output code of the solar cell panel 30, the code for supplying power to the fan 5, and the like are omitted.

  In this measuring apparatus 1A, the electric power generated by the solar battery panel 30 is stored in the storage battery in the power supply box 31, and the fan 5 can be driven by this electric power. The storage battery can also supply power to the sensor 2 to measure temperature, humidity, and the like. Furthermore, measurement data such as the measured temperature and humidity can be transmitted to another location, and the data transmitted at the other location can be used.

  In the above-described embodiment, the members 11 to 17 stacked in 7 layers are made of a resin-made one having a thickness of about 3 mm, but the flat portion at the center and the outer peripheral edge are press-molded from a metal plate. The shaft portion may be formed as a separate material, for example, a metal pipe. The number of members to be stacked is not limited, and the upper member, the intermediate member, and the lower member may each have a three-layer structure, or may have a multilayer structure of seven or more layers. Further, the upper member, the intermediate member, and the lower member have the same outer shape. However, if the upper member has a larger outer shape and the intermediate member and the lower member have a smaller outer shape, the upper member has the function of a collar. The rain is better.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to the said embodiment, In the range which does not deviate from the mind of this invention described in the specification and the claim, Various design changes can be made. For example, an example of a sensor that measures temperature and humidity has been shown as a sensor. However, a sensor that measures various data on the concentration of particulate matter such as PM2.5 in the atmosphere and gas concentration such as carbon dioxide can be applied as appropriate. But you can.

  In addition, although the planar shape of the upper member, the intermediate member, and the lower member has been shown as an example of a rectangle with arcs at the four corners, the planar shape may be formed using an appropriate shape such as a circle, an ellipse, a square, or a polygon. Good. The fan that forcibly ventilates the central space portion of the case is a fan that blows into the case from below, but a fan that blows out air in the central space portion in the case may be used.

    DESCRIPTION OF SYMBOLS 1,1A: Measuring apparatus, 2: Sensor, 2a: Sensor sensitive part, 5: Fan, 5a: Impeller, 5b: Cylindrical opening part, 10: Case, 11, 12: Upper member, 13, 14, 15 : Intermediate member 16, 17: Lower member, 11a: Central part, 12a-17a: Flat plate part, 11b-17b: Peripheral inclined surface, 13d-15d: Central space part, 16d, 17d: Vent, 17e: Foreign matter mixed Prevention mesh, 18: connecting shaft, 18a: thumbscrew, 21, 22, 23: support member, 26, 28: support member, 27, 29: clamp fitting (support member), 30: solar cell panel

Claims (9)

A measuring device comprising a sensor that measures at least one of temperature or humidity of air with a sensitive part, a case that houses the sensor or the sensitive part, and a fan that introduces air into the sensor or the sensitive part,
The fan includes a cylindrical opening with an impeller installed therein,
The case has a flat plate portion at the bottom, and a vent hole is formed in the flat plate portion.
The fan is fixed in accordance with the vent hole on the inlet side of the cylindrical opening ,
The case includes an upper member positioned at an upper portion, an intermediate member having a central space portion formed by a through hole formed at an intermediate portion and formed at a central portion, and a lower member positioned at a lower portion and constituting the flat plate portion. Are stacked at a predetermined interval, and the air introduced by the fan is discharged in the outer circumferential direction through the predetermined interval.
The measuring apparatus , wherein the sensor or the sensing part is arranged in a central space part of the intermediate member .   The measuring apparatus according to claim 1, wherein the fan is an axial fan, and the outlet side of the cylindrical opening is disposed to face the sensor or the sensing part. Said upper member, said intermediate member and said lower member is made of 2 or 3 sheets of resin plate material,
Wherein the case, the measurement device according to claim 1 or 2, characterized in that it is laminated and said lower member said upper member and said intermediate member by connecting a plurality of axes of a predetermined length at predetermined intervals . The measuring apparatus according to claim 1, wherein the intermediate member is configured by a plurality of plate members, and the volume of the central space portion is set by the number of the plurality of plate members. 5. The measurement according to claim 1, wherein the upper member located at the uppermost part of the upper member is configured by an upwardly convex conical surface, an inclined surface, or a curved surface. apparatus. Said upper member, the intermediate member and the lower member, the measuring device according to any one of claims 1-5, characterized in that the outer peripheral edge portion is inclined outwardly downward. The upper member or the lower member, the measuring device according to any one of claims 1-6, characterized in that it comprises a supporting member for supporting or fixing the case. Serial measuring device, measuring device according to any one of claims 1-7, characterized in that it comprises a solar panel to supply power to the sensor and the fan. The vent measuring apparatus according to any one of claims 1-8, characterized in that it comprises a mesh for foreign matter intrusion preventing.

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