JP2019066334A - Visualization device - Google Patents

Abstract

To provide a visualization device that can realize the visualization of changes in the physical amount at low cost.SOLUTION: A visualization device 1 for wind includes: a plurality of first light emitting units 4 each having a wind speed sensor 2 and a light emitting part 3, the light emitting parts displaying colors variable according to changes of the measured values obtained by the wind speed sensors; and a plurality of second light emitting units 5 each having a light emitting part 3 and not having a wind speed sensor. The predicted value of the physical amount obtained by a second light emitting unit 5 is calculated based on the measured value obtained by the wind speed sensors 2 of a first light emitting units 4 which is closer to the second light emitting units 5, and the display color of the light emitting parts of the second light emitting units 5 are controlled on the basis of the results of the calculation.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a visualization device that visualizes physical quantity changes.

  For example, Patent Document 1 below discloses an invention related to a wind power generation facility that includes an anemometer and a sensor, and estimates the wind speed of each part of the wind turbine from the information on the anemometer and the sensor information. As described above, by estimating the wind speed of each part of the wind turbine, it is supposed that the need to provide a sensor more than necessary is eliminated (the [0013] column of the specification, etc.).

International Publication No. 2016/042652 brochure

  However, the invention described in Patent Document 1 does not consider wind visualization.

  That is, in the invention described in Patent Document 1, the configuration for visualizing the wind at each portion while reducing costs is not particularly described nor suggested.

  Then, this invention is made in view of the said problem, and an object of this invention is to provide the visualization apparatus which can implement | achieve visualization of physical quantity change at low cost.

  The visualization device according to the present invention includes a plurality of first light emitting units having a physical quantity detection unit, and a plurality of light emission units having a display color that changes according to a change in measured value of the physical quantity detection unit, and the light emission unit A second light emitting unit not provided with a physical quantity detection unit is disposed, and the physical quantity predicted value in the second light emitting unit is the physical quantity detection of the plurality of first light emitting units adjacent to the second light emitting unit The display color of the light emitting unit of the second light emitting unit is controlled based on the measurement value of the unit and the result of the calculation.

  In the aspect of the invention, the predicted physical quantity value of the second light emitting unit is calculated by averaging measured values of the physical quantity detection units of the plurality of first light emitting units located equidistant from the second light emitting unit. Is preferred.

  At this time, in the present invention, the first light emitting unit and the second light emitting unit are regularly arranged in an XY matrix, and the X direction, the Y direction, or the X direction of the second light emitting unit It is preferable that the measurement values of the plurality of first light emitting units positioned in the Y direction or the X direction and the diagonal direction of the Y direction be used for the calculation of the averaging.

  Further, in the present invention, it is preferable that the first light emitting unit and the second light emitting unit are alternately arranged in the X direction, the Y direction, or the X direction and the Y direction.

  Alternatively, in the present invention, the physical quantity predicted value in the second light emitting unit is obtained by measuring each measured value of the physical quantity detection unit of the plurality of first light emitting units located at different distances from the second light emitting unit. It is preferable to calculate based on the converted value converted according to the reciprocal.

  At this time, in the present invention, the first light emitting unit and the second light emitting unit are arranged in an XY matrix, and the first light emitting unit and the second light emitting unit are arranged in the X direction, the Y direction, or the X direction and the Y direction. Preferably, a plurality of the second light emitting units are disposed between the light emitting units.

  Further, in the present invention, preferably, the physical quantity detection unit is a flow velocity sensor, and the display color of the plurality of light emitting units is changed according to the flow velocity change to enable visualization of the flow velocity change.

  According to the visualization device of the present invention, it is possible to realize visualization of changes in physical quantity at low cost.

It is a front schematic diagram of the visualization device of the wind in embodiment of this invention. FIG. 2 is a partial cross-sectional view of the visualization device cut along the line A-A shown in FIG. 1 and viewed in the arrow direction. It is a circuit diagram of the wind speed sensor used for the visualization device of this embodiment. It is a conceptual diagram of the visualization device of the wind in a comparative example. FIG. 5 is a first arrangement diagram of a first light emitting unit and a second light emitting unit. It is a 2nd arrangement | sequence figure of a 1st light emission unit and a 2nd light emission unit. It is a 3rd arrangement | sequence figure of a 1st light emission unit and a 2nd light emission unit. It is a block diagram of a control circuit used for a visualization device of this embodiment. It is a block diagram of the control circuit used for a visualization apparatus different from FIG.

  Hereinafter, an embodiment of the present invention (hereinafter abbreviated as “embodiment”) will be described in detail. In addition, this invention is not limited to the following embodiment, It can variously deform and implement within the range of the summary.

  FIG. 1 is a schematic front view of a wind visualization device according to an embodiment of the present invention. FIG. 2 is a partial cross-sectional view of the visualization device cut along the line A-A shown in FIG. 1 and viewed from the arrow direction. FIG. 3 is a circuit diagram of a wind speed sensor used in the visualization device of the present embodiment.

  As shown in FIG. 1, the wind visualization device 1 in the present embodiment includes a first light emitting unit 4 having a wind speed sensor (physical quantity detection unit) 2 and a light emitting unit 3, and a light emitting unit 3. And a second light emitting unit 5 not provided.

  As shown in FIG. 1, the wind visualization device 1 is panelized by arranging a plurality of first light emitting units 4 and a plurality of second light emitting units 5.

  As shown in FIG. 1, the plurality of first light emitting units 4 and the plurality of second light emitting units 5 are arranged in an XY matrix. "XY matrix" means that the two axes intersecting on the wind receiving surface (front face shown in FIG. 1) are arranged in both directions when the other is the X direction and the other is the Y direction. .

  As shown in FIG. 1, the first light emitting unit 4 is provided with a light emitting unit 3 such as an LED electrically connected to the wind speed sensor 2. For example, in FIG. 1, the light emitting unit 3 is disposed at the center of the first light emitting unit 4, and the wind speed sensor 2 is disposed at the corner of the first light emitting unit 4. Yes, and is not limited to this arrangement.

  As shown in FIG. 2, the first light emitting units 4 and the second light emitting units 5 that constitute the visualization device 1 are housed in a housing 9. As shown in FIG. 2, a front panel 10 is provided on the surface (detection surface) of the first light emitting unit 4 and the second light emitting units 5. As shown in FIG. 2, the front panel 10 is provided with a through hole 10 a at a position facing the first light emitting unit 4. The wind speed sensor 2 is attached to the surface of the first light emitting unit 4. The wind speed sensor 2 is disposed at a position where it enters into the through hole 10a. The surface of the wind speed sensor 2 is, for example, flush with the front panel 10 at the same height. The front panel 10 is preferably, for example, a transparent or highly transparent base material such as glass or resin. The through hole 10 a provided in the front panel 10 is a passage for guiding the wind to the wind speed sensor 2. However, the front panel 10 may not be present.

  Although the measurement principle of the wind speed in the wind speed sensor 2 is not particularly limited in the present embodiment, hereinafter, an example of the measurement principle of the wind speed will be described using the circuit diagram of FIG. 3.

  As shown in FIG. 3, in the wind speed sensor 2, a bridge circuit 18 is configured by the flow velocity detecting resistive element 13, the temperature compensating resistive element 14, and the resistors 16 and 17. As shown in FIG. 3, the flow rate detection resistive element 13 and the resistor 16 constitute a first series circuit 19, and the temperature compensation resistive element 14 and the resistor 17 constitute a second series circuit 20. ing. The first series circuit 19 and the second series circuit 20 are connected in parallel to form a bridge circuit 18.

  As shown in FIG. 3, the output section 21 of the first series circuit 19 and the output section 22 of the second series circuit 20 are connected to a differential amplifier (amplifier) 23, respectively. A feedback circuit 24 including a differential amplifier 23 is connected to the bridge circuit 18. The feedback circuit 24 includes a transistor (not shown) and the like.

  The resistors 16 and 17 have a temperature coefficient of resistance (TCR) smaller than the flow rate detection resistive element 13 and the temperature compensation resistive element 14. The flow rate detection resistive element 13 has a predetermined resistance value Rs1 in a heating state controlled to be higher by a predetermined value than a predetermined ambient temperature, for example, and the temperature compensation resistive element 14 is, for example, The above ambient temperature is controlled to have a predetermined resistance value Rs2. The resistance value Rs1 is smaller than the resistance value Rs2. The resistor 16 constituting the flow rate detection resistive element 13 and the first series circuit 19 is, for example, a fixed resistor having a resistance value R1 similar to the resistance value Rs1 of the flow rate detection resistive element 13. The resistor 17 constituting the temperature compensating resistive element 14 and the second series circuit 20 is, for example, a fixed resistor having a resistance value R2 similar to the resistance value Rs2 of the temperature compensating resistive element 14.

  The flow velocity detection resistive element 13 shown in FIG. 3 is disposed on the front surface side (detection surface side) of the wind velocity sensor 2 shown in FIG. 1 and the temperature compensation resistive element 14 is, for example, the back surface of the wind velocity sensor 2 shown in FIG. Placed on the side.

  When the wind blows from the windless state, the wind enters the through hole 10a shown in FIG. 2 and reaches the flow velocity detection resistive element 13 disposed on the detection surface. At this time, since the temperature of the flow rate detection resistive element 13 which is a heating resistance decreases, the potential of the output portion 21 of the first series circuit 19 to which the flow rate detection resistive element 13 is connected fluctuates. Thereby, a differential output can be obtained by the differential amplifier 23. Then, in the feedback circuit 24, a drive voltage is applied to the flow rate detection resistive element 13 based on the differential output. The control unit (microcomputer) (not shown) can convert and output the wind speed based on the change in voltage required for heating the flow rate detection resistive element 13. When the wind speed changes, the temperature of the flow rate detection resistive element 13 changes accordingly, so that the wind speed can be detected.

  The light emitting unit 3 is, for example, a full color LED. A full color LED is an LED configured to combine three RGB color LEDs into one package and to output full color. The full color LED is controlled to change the display color according to the wind speed measured by the wind speed sensor 2. Note that "display color" is a concept that includes not only hue but also lightness (density).

  In addition, a full color LED is an example, and can use the existing light emitting element for the light emission part 3 in this embodiment.

  Now, FIG. 4 is a conceptual view of a wind visualization device in a comparative example. In the visualization device 30 shown in FIG. 4, a plurality of first light emitting units 4 having a wind speed sensor 2 and a light emitting unit 3 are arranged in an XY matrix. That is, in the visualization device 30 shown in FIG. 4, although the light emitting unit 3 is provided, the second light emitting unit 5 not provided with the wind speed sensor 2 is not disposed.

  For this reason, in order to visualize wind in a wide area using the configuration of FIG. 4, many wind speed sensors 2 are required. As a result, in the configuration of FIG. 4, there arises a problem that the production cost increases.

  On the other hand, in the wind visualization device 1 of the present embodiment shown in FIG. 1, the arrangement is made using the second light emission unit 5 not having the wind speed sensor 2 together with the first light emission unit 4 having the wind speed sensor 2 . As a result, compared with the configuration of FIG. 4, the number of wind speed sensors 2 can be reduced, and the production cost can be reduced.

  In the present embodiment, the wind speed predicted at the position of the second light emitting unit 5 is calculated based on the measurement values of the wind speed sensor 2 of the plurality of first light emitting units 4 close to the second light emitting unit 5. Then, the display color of the light emitting unit 3 of the second light emitting unit 5 is controlled based on the calculation result.

  Thereby, even if the number of wind speed sensors 2 is reduced, wind visualization equivalent to that of the comparative example shown in FIG. 4 is possible. As described above, in the present embodiment, visualization of changes in physical quantity can be realized at low cost.

  For visualization of wind, for example, change the display color so that the light emitting part 3 emits red light at the area where the wind is blowing the most, and the degree of blue increases as it goes away from it and goes to the area where the wind is weak. Can. Thus, by changing the display color of the light emitting unit 3 according to the strength of the wind, it is possible to intuitively recognize the flow and strength of the wind, the spread of the wind, and the like.

  Next, a method of calculating the wind speed predicted at the position of the second light emitting unit 5 will be described.

  First, the calculation method in the case of the arrangement shown in FIG. 5 will be described. S1 to S13 shown in FIG. 5 indicate a first light emitting unit 4 having a wind speed sensor 2 and a light emitting unit 3, and A1 to A12 have a light emitting unit 3 but do not have the wind speed sensor 2. Point to Below, a 1st light emission unit S, S1-S13, a 2nd light emission unit A, and a 1-A12 are attached | subjected and demonstrated to a code | symbol. The same applies to the reference numerals in FIGS. 6 and 7.

  As shown in FIG. 5, in the odd column, the first light emitting unit S and the second light emitting unit A are alternately arranged in the order from the first row to the fifth row, and in the even column, from the first row to the fifth row The second light emitting units A and the first light emitting units S are alternately arranged in order. Thus, the first light emitting units S and the second light emitting units A are regularly arranged in an XY matrix.

  Focusing on the second light emitting unit A6 shown in FIG. 5, both sides in the X direction and both sides in the Y direction of the second light emitting unit A6 {(row, column) = (2, 2), (4, 2), (3, The 1st light emission unit S4, S9, S6, S7 is provided in the proximity position of 1), (3, 3)}. The first light emitting units S4, S9, S6, and S7 are located equidistant from the second light emitting unit A6. Here, “equal distance” can be defined as the center-to-center distance between the first light emitting unit S and the second light emitting unit A.

  As described above, when equidistant, the wind speed value predicted by the second light emitting unit A6 shown in FIG. 5 is measured by the wind speed sensors 2 of the first light emitting units S4, S9, S6, and S7. It can calculate by averaging the wind speed value.

  In addition, the second light emitting unit A located at the outermost periphery of the first row, the fifth row, the first column, and the fifth column shown in FIG. 5 has four first light emitting units S in the X direction and the Y direction. Not surrounded by That is, at least one of the four first light emitting units S is missing.

  Therefore, with regard to the outermost second light emitting unit A, using the wind speed values of the plurality of first light emitting units S located equidistant from the second light emitting unit A except for the missing first light emitting unit S, The wind speed value predicted at the position of the second light emitting unit A is calculated. For example, in the second light emitting unit A2, the first light emitting units S2, S3, and S5 are close to both sides in the X direction and one side (lower side in the drawing) of the Y direction. Therefore, the wind speed value predicted at the position of the second light emitting unit A2 can be calculated by averaging the wind speed values measured by the respective wind speed sensors 2 of the first light emitting units S2, S3 and S5.

  In FIG. 5, although the wind speed values of the four first light emitting units S on both sides in the X direction and on both sides in the Y direction close to the second light emitting unit A are used, for example, X approaching the second light emitting unit A Only the wind speed values of the first light emitting units S on both sides of the direction or only the wind speed values of the first light emitting units S on both sides in the Y direction close to the second light emitting unit A are used. And the wind speed value estimated in the position of the 2nd light emission unit A may be calculated by calculating these average value. For example, under the condition that the wind blows only in the Y direction, the first light emitting units located on both sides in the Y direction of the second light emitting unit A under the condition that the wind speed value in the X direction is not considered (ignored) Only the wind speed value of S may be averaged. Similarly, under the condition that wind blows only in the X direction, the first light emission located on both sides in the X direction of the second light emitting unit A under the condition that the wind speed value in the Y direction is not considered (ignored) Only the wind speed value of the unit S may be averaged.

  Next, the calculation method in the case of the arrangement shown in FIG. 6 will be described. As shown in FIG. 6, in the odd columns, the first light emitting unit S and the second light emitting unit A are alternately arranged in the order from the first row to the fifth row, and in the even columns from the first row to the fifth row , And only the second light emitting unit A is disposed.

  Focusing on the second light emitting unit A4 shown in FIG. 6, diagonal four directions of the second light emitting unit A4 in the X direction and the Y direction {(row, column) = (1, 1), (3, 1), (1,) First light emitting units S1, S4, S2, and S5 are provided at close positions of 3) and (3, 3)}. These first light emitting units S1, S4, S2, S5 are located equidistant from the second light emitting unit A4.

  And the wind speed value estimated by 2nd light emission unit A4 shown in FIG. 6 is calculated by averaging the wind speed value measured by each wind speed sensor 2 of 1st light emission unit S1, S4, S2, S5. be able to.

  In addition, for the second light emitting unit A in which the first light emitting unit S does not exist at equal distances in four oblique directions, such as the second light emitting unit A8, for example, the wind speed value is as follows. It can be calculated.

  That is, in the second light emitting unit A8, since the first light emitting units S4 and S5 exist on both sides in the X direction, the wind speed values of the first light emitting units S4 and S5 are used. However, the first light emitting unit S is not present on both sides in the Y direction of the second light emitting unit A8. In this case, first, the wind speed value of the second light emitting unit A4 is calculated using the measurement value of the wind speed sensor 2 of each first light emitting unit S present at oblique positions in the X direction and Y direction as described above. Similarly, the wind speed value of the second light emitting unit A11 is calculated using the measurement values of the wind speed sensors of the first light emitting units S4, S5, S7, and S8 present at oblique positions in the X direction and the Y direction. The wind speed value of the second light emitting unit A8 can be calculated by averaging the wind speed values of the second light emitting units A4 and A11 calculated in this manner with the wind speed values of the first light emitting units S4 and S5.

  In the arrangement of FIG. 5 and FIG. 6, there exist columns and rows in which the first light emitting units S and the second light emitting units A are alternately arranged (in FIG. 6, provided every other column).

  On the other hand, in the arrangement shown in FIG. 7, there are no columns or rows in which the first light emitting units S and the second light emitting units A are alternately arranged. That is, in FIG. 7, two second light emitting units A intervene between the first light emitting units S, as shown in the first, fourth, and seventh columns. In addition, the second light emitting units A are arranged in all of two rows between the first and fourth rows and two rows between the fourth and seventh rows. As described above, when there is no column or row in which the first light emitting units S and the second light emitting units A are alternately arranged, a plurality of first light emitting units S exist at equal distances from the second light emitting unit A. Absent. In this case, for example, as viewed from the second light emitting unit A, the four first light emitting units S are selected in order from the closest one, and the distance condition is also added to calculate the wind speed.

  For example, it is assumed that the predicted wind speed value of the second light emitting unit A6 is calculated. The distance between the second light emitting unit A6 and the nearest first light emitting unit S1 is, for example, “2”. Further, it is assumed that the distance between the second light emitting unit A6 and the first light emitting units S2 and S4 next to the second light emitting unit A6 is, for example, “3”. In addition, the distance between the second light emitting unit A6 and the third light emitting unit S5 which is the third closest to the second light emitting unit A6 is, for example, “4”.

  When the wind speed predicted value of the second light emitting unit A6 is calculated, the influence of the wind speed of the first light emitting unit S becomes higher as the first light emitting unit S is closer to the second light emitting unit A6. Therefore, an inverse number obtained by dividing each distance by all the distances 1 obtained by adding each distance described above is the degree of influence of each first light emitting unit S.

  That is, since all the distances l are 2 + 3 + 3 + 4 = 12, the influence of the first light emitting unit S1 is 12/2 = 6, and the influence of the first light emitting units S2 and S4 is 12/3 = 4, The influence degree of 1 light emitting unit S5 is 12/4 = 3.

  As mentioned above, the influence degree of 1st light emission unit S1: 1st light emission unit S2: 1st light emission unit S4: 1st light emission unit S5 is 6: 4: 4: 3. The ratio of influence of the first light emitting unit S1: the first light emitting unit S2: the first light emitting unit S4: the first light emitting unit S5 is 6/17: 4. / 17: 4/17: 3/17.

  Next, the wind speed value of each first light emitting unit S is multiplied by the influence degree ratio and added. For example, the wind speed of the first light emitting unit S1 is "17", the wind speed of the first light emitting unit S2 is "34", the wind speed of the first light emitting unit S4 is "17", and the speed of the first light emitting unit S5 is When the wind speed value is “34”, the wind speed value predicted at the position of the second light emitting unit A6 is 17 × (6/17) + 34 × (4/17) + 17 × (4/17) + 34 × (3/17) = 6 + 8 + 4 + 6 = 24. The “24” is the wind speed value predicted at the position of the second light emitting unit A6.

  As shown in FIG. 7, when the plurality of second light emitting units A are disposed between the first light emitting units S, the distance from the second light emitting unit A to the plurality of first light emitting units S changes. For this reason, it is preferable to calculate the wind speed values of the plurality of first light emitting units S based on the converted values converted according to the reciprocal of each distance.

  The calculation methods illustrated in FIGS. 5 to 7 are merely examples, and the wind speed value predicted at the position of each second light emitting unit A may be calculated other than these calculation methods.

  FIG. 8 is a block diagram of a control circuit used in the visualization device of the present embodiment. In FIG. 8, a plurality of first light emitting units S1 to S13 and a plurality of second light emitting units A1 to A12 are connected to one CPU 40.

  The CPU 40 reads the wind speed value of each of the first light emitting units S1 to S13. And the wind speed predicted value of each 2nd light emission unit A1-A12 is calculated, for example using the calculation method mentioned above. The CPU 40 transmits data of the calculated predicted wind speed value to each of the second light emitting units A1 to A12. Thereby, the display color of the light emission part of each 2nd light emission unit A1-A12 is controlled.

  FIG. 9 is a block diagram of a control circuit used in the visualization device, which is different from FIG. In FIG. 9, the CPU 42 is incorporated in each of the first light emitting units S1 to S13, and the CPU 41 is incorporated in each of the second light emitting units A1 to A12. In FIG. 9, reference numerals 41 and 42 are attached only to the CPUs incorporated in the first light emitting unit S1 and the second light emitting unit A1.

  In FIG. 9, the CPU 41 incorporated in each of the second light emitting units A1 to A12 reads a necessary wind speed value from the CPU 42 of each of the first light emitting units S1 to S13 based on the above-described calculation method, for example. Calculate Thereby, the display color of the light emission part of each 2nd light emission unit A1-A12 is controlled.

  Although the wind visualization device has been described above, the present invention can also be applied to a visualization device that measures physical quantity changes other than wind speed. For example, it may be a gas flow, or a visualization device of flow velocity change for liquid such as water. Alternatively, in addition to the flow velocity, a visualization device such as a temperature change, a humidity change, and a pressure change may be used.

  In the embodiment described above, the first light emitting unit and the second light emitting unit are arranged in the plane direction, but for example, the first light emitting unit and the second unit are arranged in the height direction, or a plane It may be arranged in both the direction and the height direction.

  In the visualization device in the present invention, even if the number of physical quantity detection units is reduced, visualization of changes in physical quantity can be appropriately realized. And, by reducing the number of physical quantity detection units, the production cost can be reduced, and in particular, the configuration is suitable for application to a large panel or the like.

  The visualization device of the present invention can, for example, visualize wind, and can be applied to any scene such as home, industrial, or public use.

1, 30: Visualization device 2: Wind speed sensor 3: Light emitting unit 4, S, S1 to S13: first light emitting unit 5, A, A1 to A12: second light emitting unit 9: case 10: front panel 10a: through hole 13: Resistive element 14 for flow rate detection: Resistive element 18 for temperature compensation: Bridge circuit 19: First series circuit 20: Second series circuit 23: Differential amplifier 24: Feedback circuit 40, 41, 42: CPU

Claims (7)

A plurality of first light emitting units having a physical quantity detection unit, and a light emitting unit whose display color changes in accordance with a change in measured value of the physical quantity detection unit;
A second light emitting unit having the light emitting unit and not including the physical quantity detecting unit;
The physical quantity predicted value in the second light emitting unit is calculated based on the measurement values of the physical quantity detection units of the plurality of first light emitting units in proximity to the second light emitting unit,
A display device characterized in that a display color of the light emitting unit of the second light emitting unit is controlled based on a result of the calculation.   The physical quantity predicted value in the second light emitting unit is calculated by averaging measurement values of the physical quantity detection units of the plurality of first light emitting units located equidistant from the second light emitting unit. The visualization device according to claim 1, wherein   The first light emitting unit and the second light emitting unit are regularly arranged in an XY matrix, and the X direction, the Y direction, or the X direction and the Y direction of the second light emitting unit, or the X The visualization device according to claim 2, wherein measurement values of a plurality of the first light emitting units positioned in a diagonal direction of the direction and the Y direction are used for calculation of the averaging.   The first light emitting unit and the second light emitting unit are alternately arranged in the X direction, the Y direction, or the X direction and the Y direction. Visualization device.   The physical quantity prediction value in the second light emitting unit is obtained by converting each measured value of the physical quantity detection unit of the plurality of first light emitting units located at different distances from the second light emitting unit according to the reciprocal of each distance The visualization device according to claim 1, wherein the visualization device is calculated based on a conversion value.   The first light emitting unit and the second light emitting unit are arranged in an XY matrix, and a plurality of the first light emitting units are arranged in the X direction, the Y direction, or the X direction and the Y direction. 6. The visualization device according to claim 5, wherein the second light emitting unit is disposed. The physical quantity detection unit is a flow velocity sensor, and the display color of the plurality of light emitting units is changed according to the flow velocity change, and visualization of the flow velocity change is made possible. Visualization device according to any of the.

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