JP2020204467A - Portable environmental measurement device - Google Patents

Abstract

To provide a portable environmental measurement device which can accurately measure the temperature of a black ball even in a state to be worn by a worker, so as to allow of accurately obtaining an index of heatstroke.SOLUTION: A heatstroke index meter 10 includes: a main body 12 having holes 24 for an attachment; a black ball sensor 14 having a temperature sensor in a substantially-spherical black ball 15 which is provided protruding from the main body 12; and a controller which is provided in the main body 12 and which calculates an index on the basis of a measurement value of the black ball sensor 14. The black ball 15 is connected to the main body 12 in a manner adjustable in position.SELECTED DRAWING: Figure 1

Description

The present invention relates to a portable environmental measurement device, and more particularly to a portable environmental measurement device that is used in a state of being worn by an operator and that obtains a heat index to notify the risk of heat stroke.

It is known that work in a hot environment causes heat stroke, and as a countermeasure, workers have more opportunities to have a portable environment measuring device (so-called heat stroke index meter). The portable environment measuring device generally uses the wet-bulb globe temperature (or heat index WBGT) as an index, and it is necessary to measure the globe temperature for the calculation. Originally, the black globe temperature is supposed to measure the center temperature of a black globe with a diameter of 15 cm, but since it is not possible to carry a large black globe with a portable type, a small black globe is provided and the temperature is measured at the center. , It is used as the black globe temperature by correcting the value. For example, in the portable environment measuring device of Patent Document 1, a small black globe is provided so as to project above the main body, and the index of heat stroke is obtained by measuring the center temperature in the black globe.

By the way, such a portable environment measuring device is often used by placing it in a work place or by wearing it on an operator. For this reason, the main body of the portable environmental measurement device is provided with a mounting tool (for example, a belt, a holder, a string, a strap, a clip, etc.), or an engaging portion (hole or hook) to which the mounting tool can be retrofitted. Etc.) are provided so that the main body can be attached to the operator for use.

Patent No. 6047801

However, in the conventional portable environment measuring device, when the main body is attached to the worker, the black ball above the main body is in close contact with the worker and heat is transferred to the black ball, or the black ball is in the shadow of the worker. There were times when I got in. For this reason, when the main body is attached to the operator, there is a problem that the deviation of the black bulb temperature is large and the index of heat stroke cannot be accurately obtained.

The present invention has been made in view of such circumstances, and the black bulb temperature can be accurately obtained even when worn on an operator, and the heat stroke index and the like can be accurately obtained. An object of the present invention is to provide a portable environment measuring device.

The invention according to claim 1 has a main body having a mounting portion for mounting on an operator and a black having a temperature sensor in a substantially spherical black globe provided so as to project from the main body in order to achieve the above object. In a portable environment measuring device including a ball sensor unit and a control unit in the main body that calculates an index based on the measured value of the black ball sensor unit, the black ball is a position for adjusting the position with respect to the main body. A portable environment measuring device is characterized in that it is connected to the main body via an adjusting mechanism.

According to the present invention, since the black ball is connected to the main body in an adjustable position, the position of the black ball with respect to the operator who wears the main body can be adjusted. Therefore, by moving the black globe away from the operator, it is possible to prevent the heat and shadow of the operator from affecting the temperature sensor in the black globe.

A second aspect of the present invention is the first aspect of the present invention, wherein the position adjusting mechanism includes an arm portion that connects the black ball and the main body, and the arm portion is connected to the main body so that the angle can be adjusted. Moreover, it is characterized in that it is held at an adjusted angle. According to the present invention, the position of the black sphere with respect to the main body can be adjusted by adjusting the angle of the arm portion.

A third aspect of the present invention is the second aspect of the present invention, wherein the main body is provided with an angle operating unit for operating the angle of the arm unit. According to the present invention, since the main body is provided with the angle control unit, the angle can be adjusted without touching the black ball.

The invention of claim 4 is the invention of any one of claims 1 to 3, wherein the position of the black globe is adjusted with respect to the main body in a state of being attached to the worker by the position adjusting mechanism. It is characterized by. According to the present invention, the position of the black ball can be adjusted while the main body is attached to the operator. Therefore, the black ball can be reliably separated from the operator.

The invention of claim 5 is the invention of any one of claims 1 to 4, wherein the mounting portion is a mounting tool for mounting on the worker or an engaging portion of the main body for mounting the mounting tool. It is characterized by being. According to the present invention, the main body is provided with a mounting tool (for example, a belt, a holder, a string, a strap, a clip, etc.) or an engaging portion (for example, a hole, a hook, etc.) for the mounting tool, and the main body is operated by an operator. Can be attached to.

According to the present invention, since the black globe is connected to the main body in an adjustable position, the black bulb can be separated from the operator who wears the main body, and the heat and shadow of the operator are the temperature sensor in the black globe. Can be prevented from affecting.

Front view of heat stroke index meter to which the portable environmental measuring device of the present invention is applied Right side view of the heat stroke index meter of FIG. Rear view of the heat stroke index meter of FIG. Front view showing a heat stroke index meter of another embodiment Right side view of the heat stroke index meter of FIG. Front view showing a heat stroke index meter of another embodiment Front view showing a heat stroke index meter of another embodiment

A preferred embodiment of the portable environmental measuring device according to the present invention will be described with reference to an example of a heat stroke index meter according to the accompanying drawings. FIG. 1 is a front view showing a heat stroke index meter 10 to which the present invention is applied, and FIGS. 2 and 3 are a right side view and a rear view of the heat stroke index meter 10 respectively.

The heat stroke index meter 10 shown in these figures includes a main body 12 and a black ball sensor unit 14. The black globe sensor unit 14 is a sensor that measures the temperature of a black globe, and is composed of a black globe 15 formed in a substantially spherical shape and a thermometer (not shown) arranged in the center of the black globe 15. The black ball 15 is supported by the main body 12 via the arm portion 16, and is attached to the upper part of the main body 12 in a protruding state.

A black ball 15 is fixed to the tip of the arm portion 16, and a base end portion is rotatably connected to the upper portion of the main body 12. Specifically, the upper part of the main body 12 is formed in a concave shape having a concave center, and is rotatably connected with the base end portion of the arm portion 16 inserted in the concave portion. Therefore, as shown in FIG. 2, the position of the black globe 15 of the black globe sensor unit 14 can be adjusted with respect to the main body 12 by rotating the arm portion 16 with respect to the main body 12 and changing the angle. ..

A friction plate (not shown) is provided between the base end portion of the arm portion 16 and the main body 12, and the frictional force thereof is normal (when no force is applied to the arm portion 16 or the black ball 15). The angle of the arm portion 16 is maintained by the arm portion 16. Further, when a force exceeding the frictional force is applied to the arm portion 16 (or the black ball 15), the arm portion 16 rotates with respect to the main body 12, and the angle of the arm portion 16, that is, the black ball 15 with respect to the main body 12 The position of can be adjusted. As shown in FIG. 2, the movable range of the angle adjustment of the arm portion 16 is approximately 90 degrees from the position where the black globe 15 is directly above the main body 12 to the position in front of the main body 12. Further, the arm portion 16 is configured so that the frictional resistance increases at a predetermined rotation angle (for example, 30 degrees, 45 degrees, 60 degrees, etc.) and the arm portion 16 temporarily stops during the rotation operation.

On the other hand, a screen 18 is provided on the front surface of the main body 12 as shown in FIG. 1, and the temperature, humidity, heat stroke index, and heat stroke warning display are displayed on the screen 18. Various operation buttons 20 such as a power button and a setting button are provided around the screen 18. Note that FIG. 1 is an example of the arrangement of the screen 18 and the operation buttons 20, and the present invention is not limited to this, and various modes are possible. Further, a member different from the screen 18 and the operation button 20, for example, a warning light for heat stroke may be provided.

Inside the main body 12, a control unit including a circuit board and the like, a battery as a power source, and a temperature / humidity sensor are provided (all not shown). The temperature / humidity sensor is a sensor that measures temperature and humidity, and the measurement signal is transmitted to the control unit. The control unit performs various arithmetic processes, and uses the black bulb temperature obtained from the measured value of the black bulb sensor unit 14 and the wet-bulb temperature and dry-bulb temperature obtained from the measured values of the temperature and humidity sensor to obtain humidity. Calculate the bulb black globe temperature. Then, the calculated wet-bulb globe temperature is displayed on the screen 18 as an index of heat stroke, and when the index exceeds a predetermined value, a warning is displayed on the screen 18 or a warning sound is emitted from a microphone (not shown). Or emit. In the present embodiment, a temperature / humidity sensor that measures both temperature and humidity is used, but a temperature sensor and a humidity sensor may be provided separately.

As shown in FIG. 3, on the back side of the main body 12, an engaging portion for a mounting tool is provided as a mounting portion for mounting on an operator. Specifically, elongated holes 24, 24 for passing the attached belt 22 (see FIG. 2) are formed on both sides of the back surface of the main body 12. The holes 24, 24 are formed so as to penetrate the back surface and the side surface of the main body 12, and the main body 12 is formed by passing the belt 30 through the holes 24 and wrapping the holes around a part of the worker (for example, an arm). It is attached to. At that time, by providing the holes 24 and 24 on both sides of the back surface, the main body 12 is stably mounted with the back surface in contact with the operator. The angle adjustment of the arm portion 16 described above is preferably configured so that the angle (posture) can be adjusted with respect to the contact surface with the operator (the back surface of the main body 12), whereby the black ball 15 and the operator You can change the interval between.

In the present embodiment, elongated holes 24, 24 for the belt are formed as the engaging portion for the fitting, but the present invention is not limited to this, and various modes are used as the engaging portion for attaching the fitting. Is possible. For example, the main body 12 may be provided with a small hole for engaging a string or a strap, or a convex portion or a concave portion for engaging a hard holder as an engaging portion. Further, in the present embodiment, the engaging portion for the mounting tool is provided on the main body 12, but the mounting tool may be provided directly on the main body 12, for example, a mounting tool such as a holder or a clip may be provided on the main body 12. Good.

Next, the action of the heat stroke index meter 10 configured as described above will be described. When the heat stroke index meter 10 is attached to the worker and used, the main body 12 is attached to the worker by the belt 22 shown in FIG. At that time, the back surface of the main body 12 (the surface on the right side in FIG. 2) is in contact with the operator, and the black globe 15 of the black globe sensor unit 14 is also easily in contact with the operator. Therefore, there is a problem that the heat of the worker is easily transferred to the black ball 15. Further, since the black ball 15 is easily in contact with the worker, there is also a problem that a part of the black ball 15 is easily in the shadow of the worker. As a result, the value of the black bulb temperature deviates, and the index of heat stroke becomes a value different from the actual value, so that the warning of heat stroke cannot be issued at the correct timing.

In order to solve such a problem, the heat stroke index meter 10 of the present embodiment can adjust the angle of the arm portion 16 with respect to the main body 12. For example, the arm portion 16 is rotated from the state before adjustment (the position of the solid line in FIG. 2) to the position of 90 degrees (the position of the alternate long and short dash line in FIG. 2). As a result, the black ball 15 of the black ball sensor unit 14 is arranged at a position away from the operator, so that it is difficult for the heat of the worker to be transmitted to the black ball 15 and the black ball 15 to be in the shadow of the worker. Become. Therefore, since the measurement accuracy of the black bulb temperature is improved, the index of heat stroke can be correctly obtained, and the warning of heat stroke can be issued at an appropriate timing.

In particular, in the present embodiment, the back side of the main body 12 is attached to the worker, while the black ball 15 moves from above the main body 12 to the front side, so that the main body 12 is attached to the worker. The position of the black ball 15 can be adjusted in this state. Therefore, the position of the black ball 15 can be reliably and easily moved to a position away from the operator.

Further, in the present embodiment, by returning the black ball 15 to the original position (above the main body 12), it can be stably used as a stationary type. That is, when the black ball 15 is placed on the floor or the like as a stationary type, the black ball 15 is placed above the main body 12 and the main body 12 is placed upright so that the black ball 15 is placed at a position away from the floor. The black globe temperature can be measured accurately.

In the above description, the angle of the arm portion 16 is adjusted at 90 degree intervals, but the present invention is not limited to this, and the angle is 30 degrees, 45 degrees, 60 degrees, etc., which is easy for the operator to work in, or in the shade. The angle can be adjusted as appropriate.

Further, in the above-described embodiment, the arm portion 16 and the black bulb 15 are directly operated to adjust the position, but the position is not limited to this. For example, the angle adjustment knob (not shown) on the side surface of the main body 12. The angle of the arm portion 16, that is, the position of the black ball 15 may be adjusted by rotating the knob. In this case, the angle can be adjusted without touching the black ball 15.

Further, in the above-described embodiment, the angle of the arm portion 16 is maintained by providing a friction plate (not shown) between the main body 12 and the arm portion 16, but the angle adjusting mechanism of the arm portion 16 is limited to this. It is not something that can be done, and various aspects are possible. For example, the angle of the arm portion 16 may be adjusted and held by using a gear or the like.

4 and 5 are a heat stroke index meter 30 of another embodiment, and shows a front view and a right side view of the heat stroke 30, respectively. The heat stroke index meter 30 shown in these figures is different from the heat stroke index meter 10 shown in FIGS. 1 to 3 in the position adjusting mechanism of the black bulb 15. Specifically, the black ball 15 is connected to the main body 12 via the jointed arm portion 32. The articulated arm portion 32 is divided into a tip end side and a base end side, and is rotatably connected via a pin 34 (see FIG. 5). Therefore, the articulated arm portion 32 can be bent, and the position of the black globe 15 can be adjusted as shown by the alternate long and short dash line. Even in the case of the heat stroke index meter 30, the black bulb 15 can be separated from the operator, and accurate measurement can be performed.

In the above-described embodiment, the joint of the jointed arm portion 32 has been described as an example of one, but the present invention is not limited to this, and a plurality of joints may be provided. At that time, the rotation axis of the joint is not limited to one direction, and may be a plurality of directions. Further, as the joint of the jointed arm portion 32, a universal joint may be used so that the angle can be adjusted in all directions.

FIG. 6 shows a total heat stroke index 40 of another embodiment. The heat stroke index meter 40 shown in the figure also has a different position adjustment mechanism for the black bulb 15. Specifically, the black ball 15 is connected to the main body 12 via a flexible cable 42. The flexible cable 42 is formed by spirally winding a strip-shaped metal plate, can be freely curved, and is configured to maintain a curved posture. Even when such a flexible cable 42 is used, the position of the black ball 15 can be adjusted with respect to the main body 12. As described above, the position adjusting mechanism of the black ball 15 can be in various modes, and any device that can adjust the position of the black ball 15 with respect to the main body 12 is sufficient.

In the above-described embodiment, the black ball 15 is provided so as to project from the upper center of the main body 12, but the position of the black ball 15 is not limited to this, for example, the left and right side surfaces of the main body 12 and the like. It may be provided so as to protrude from the lower surface or the front surface. Further, as in the heat stroke index meter 50 shown in FIG. 7, a black ball 15 may be provided at the upper right corner of the main body 12 so as to be rotatably connected to the main body 12.

Further, in the above-described embodiment, the black bulb 15 is configured to be adjustable in position with respect to the main body 12, but similarly, the temperature / humidity sensor may be configured to be adjustable in position with respect to the main body 12. For example, the temperature / humidity sensor unit is provided so as to project below the main body 12, and the temperature / humidity sensor unit is connected to the main body via the jointed arm portion. As a result, the position of the temperature / humidity sensor unit can be adjusted with respect to the main body 12, and the temperature / humidity sensor unit can be arranged away from the operator.

Further, the above-described embodiment has been described with the example of a heat stroke index meter as an example of a portable environmental measurement device, but the present invention is not limited to this, and any device for measuring the environment can be applied, for example, influenza. It can also be applied to devices that display the index and dryness index of.

10 ... heat stroke index meter, 12 ... main body, 14 ... black ball sensor unit, 15 ... black ball, 16 ... arm part, 18 ... screen, 20 ... operation button, 22 ... belt, 24 ... hole, 30 ... heat stroke index Total, 32 ... arm part, 34 ... joint part, 40 ... heat stroke index meter, 42 ... flexible cable, 50 ... heat stroke index meter

Claims (5)

Based on the measurement values of a main body having a mounting portion for mounting on an operator, a black bulb sensor portion having a temperature sensor in a substantially spherical black globe provided protruding from the main body, and a black bulb sensor portion. In a portable environment measuring device provided with a control unit in the main body for calculating an index,
A portable environment measuring device characterized in that the black bulb is connected to the main body via a position adjusting mechanism for adjusting the position with respect to the main body. The position adjusting mechanism includes an arm portion that connects the black ball and the main body, and the arm portion is connected to the main body so that the angle can be adjusted and is held at an adjusted angle. The portable environmental measurement device according to claim 1. The portable environment measuring device according to claim 2, wherein the main body is provided with an angle operating unit for operating the angle of the arm unit. The portable environment according to any one of claims 1 to 3, wherein the position of the black globe is adjusted with respect to the main body in a state of being attached to the worker by the position adjusting mechanism. Measuring device. The mounting portion according to any one of claims 1 to 4, wherein the mounting portion is a mounting tool for mounting on the worker or an engaging portion of the main body for mounting the mounting tool. Portable environment measuring device.

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