JP2005267491A - Vdt work environment control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically change physical working conditions by monitoring a user's workload in VDT work. <P>SOLUTION: A user 150 carries out VDT work with VDT-related implements comprising movable mechanisms for changing physical working conditions according to command signals, such as a chair 20 having a leg height change part 34 and caster parts 36 and 38 and a desk 50 having a leg height change part 58. According to outputs of working state monitoring sensors such as pressure sensors 106a-d set on the chair, electromyographic measuring sensors 114 and 116 and a camera 120, a PC 70 as a VDT work environment control device calculates the user's VDT workload and sends to the VDT-related implements command signals for establishing physical working conditions for promoting a rest and reducing an eye burden. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a technique for changing physical work conditions of a VDT work-related equipment.

  In desk work where a person sits on a chair and works on a desk, the same posture is continued for a long time. For this reason, the fatigue peculiar to desk work tends to be caused, and the countermeasure is taken.

  The following Patent Document 1 discloses a vibration chair for preventing sleepiness to which a vibration motor is attached. Patent Document 2 listed below discloses a chair / desk set that changes its inclination in accordance with a change in a user's sitting posture. Patent Document 3 listed below describes a system that monitors a user's work time based on keyboard input.

Japanese Patent Laid-Open No. 5-45090 JP-A-10-99140 JP-A-2-140814

  In particular, in VDT work in which a computer is used while looking at a display, it is required to relieve physical fatigue such as tired eyes and stiff shoulders, or related mental fatigue.

  An object of the present invention is to establish a technique for forcibly changing a physical work condition related to a user's VDT work.

  Another object of the present invention is to establish a technique for changing physical work conditions in consideration of a user's VDT workload.

  The VDT work environment control device of the present invention includes a chair on which a user is seated, a desk placed in front of the chair, and a display placed on the desk, and the physical work conditions can be changed by command signals. Calculating means for calculating the user's VDT workload based on the output of the work status monitoring sensor for the user performing VDT work using the VDT work-related equipment, and VDT work-related based on the VDT workload Command means for sending a command signal for instructing the equipment to change the physical working condition.

  The VDT (Video Display Terminal) work is a work in which a computer is operated while viewing a display. The VDT work-related equipment is directly related to a user's work environment among devices and instruments necessary for performing the VDT work, and includes a chair, a desk, a display, and the like. One of the characteristic points is that at least one device or instrument included in the VDT work-related equipment has a mechanism that makes the physical work condition variable by a command signal. In other words, the VDT work-related equipment includes a mechanism that makes the user's physical work environment variable, and this is performed not by manual control but by control based on a command signal. Physical work conditions include, for example, absolute or relative horizontal or height position conditions such as chairs, desks, displays, etc., their placement angle conditions, whether chairs are fixed or movable, or The conditions regarding whether to forcibly vibrate, the conditions such as the brightness and light emission cycle of a display and a lighting fixture, and the conditions such as the temperature and humidity around the user can be mentioned.

  The work status monitoring sensor is a sensor for monitoring the user's VDT work status. For example, the user's VDT work time, work amount, posture, fatigue, drowsiness, etc. are directly or indirectly measured and output. The calculating means calculates the user's VDT workload based on this output. The VDT work load amount is a burden on the user when performing the VDT work. For example, the VDT work load can be obtained by taking into account a plurality of factors such as the work time, work amount, posture, fatigue, sleepiness, etc. mentioned above by statistical processing. Alternatively, the VDT workload may be obtained based only on the output value of one of these elements.

  The VDT workload obtained in this way is used to determine the necessity of changing physical work conditions. That is, it is used to determine whether or not to make a change, or to what extent the change is made. This criterion is typically determined by academic achievements such as medicine, psychology, and ergonomics, and experiments. For example, public organizations such as the Ministry of Health, Labor and Welfare and ISO (International Organization for Standardization) It is also effective to use the criteria presented. The command means makes this determination and commands the change to the VDT work related equipment. The environment realized by the physical work conditions includes an environment in which the user feels easy to work, an environment in which the user can work in a healthy manner, an environment in which the work is difficult to continue, and an environment suitable for a break. In addition, even if the physical working conditions are changed at least instantaneously (for example, only 1 or 2 seconds), there is an effect of stimulating the user. Depending on the VDT workload, the physical working conditions can be changed in various ways according to the purpose.

  This VDT work environment control device is realized by hardware having an arithmetic function and software (program) that defines its operation. For example, the VDT work environment control device can be realized by using a computer related to VDT work, or may be another computer. Moreover, it may have a single case, or may be incorporated in a VDT work-related equipment such as a chair or desk in the form of an ASIC (Application Specific Integrated Circuit).

  According to this configuration, the physical work condition related to the VDT work can be forcibly changed in consideration of the user's VDT work load. This makes it possible to improve the health and work efficiency of the user who performs the VDT work. The present invention can be described as an invention of a program for performing such control or an invention of a control method.

  Desirably, in the VDT work environment control device of the present invention, the command means commands the change of physical work conditions in a direction to reduce the load on the eyes of the user who sees the display. That is, a change in physical work conditions is commanded in a direction to reduce the burden on the eyes determined based on academic or empirical grounds. For example, it is effective to bring the burden on the eyes obtained academically or empirically closer to the physical work conditions. It is also effective from the viewpoint of changing the environment to change the state before the change slightly beyond the physical work state with less burden. Specifically, the display height is moderately lowered with respect to the chair, the horizontal distance between the chair and the display is moderately increased (this causes the focal point to be set far away), and the display brightness is moderately decreased (this Can reduce eye irritation).

  Desirably, in the VDT work environment control device of the present invention, the command means commands to change the physical work condition in a direction to reduce the muscle tension of the user. That is, a change in physical work conditions is commanded in a direction to reduce muscle tension determined based on academic or empirical grounds. Specifically, when the user is sitting obliquely with respect to the chair or sitting with the body tilted, the chair can be rotated or the chair can be tilted for correction. It is also effective to guide the chair in a direction in which the angle of the chair is turned up and the user is turned up.

  Preferably, in the VDT work environment control device according to the present invention, the command means commands the change of physical work conditions in a direction that makes it difficult for the user to continue the VDT work. The direction that makes it difficult to continue the VDT work can be easily determined based on empirical grounds. For example, the user can be forced to rest by discontinuing the display on the display and making it impossible to continue the VDT operation.

  Preferably, in the VDT work environment control device of the present invention, the physical work condition is a condition regarding the relative height of the chair and the display. The relative height of the chair and the display can be changed by changing the height of the chair or the height of the desk or display. For example, in order to rest the eyes, the display may be operated so that the height of the display is lower than the position of the user's eyes. Further, the height position of the user's elbow may be changed so as to be appropriate with respect to the desk to reduce the user's muscle tension. Alternatively, it is also effective to extremely change the relative height of the chair and the display in one direction so that it is difficult to continue the work.

  Preferably, in the VDT work environment control device of the present invention, the physical work condition is a condition regarding a horizontal distance between the chair and the display. The horizontal distance between the chair and the display can be changed by changing the horizontal position of the chair or the horizontal position of the desk or display. For example, in order to rest the eyes, the horizontal distance may be increased. Alternatively, it is also effective to extremely change the horizontal distance between the chair and the display in one direction so that it is difficult to continue the work.

  Preferably, in the VDT work environment control apparatus of the present invention, the physical work condition is a condition regarding the brightness of the display.

  Desirably, in the VDT work environment control device of the present invention, the VDT work-related equipment includes a lighting fixture that illuminates the vicinity of the desk, and the physical work condition is a condition regarding the illuminance of the lighting fixture. For example, when taking a break, it is effective to reduce the illuminance so as to reduce eye irritation. It is also effective to make it difficult to continue the operation by blinking the illumination.

  Preferably, in the VDT work environment control device of the present invention, the physical work condition is a condition concerning the temperature of the chair. For example, when the user's muscles are warmed by raising the temperature of the chair, an effect of resting the muscles can be expected. How much the temperature is increased or decreased may be determined in consideration of the user's body temperature, ambient temperature and humidity, and the like.

  Preferably, the VDT work environment control device of the present invention includes a notice command means for giving a command for notifying the user of the change before the command means commands the change of the physical work condition. In particular, when changing the physical work conditions accompanying movement, it may be better to avoid user surprises. Therefore, it is effective to perform a preliminary operation such as vibrating in small increments or starting slowly, or outputting a preliminary notification through sound or images.

  Preferably, in the VDT work environment control device according to the present invention, the work status monitoring sensor includes at least one of a pressure sensor attached to a user contact surface of the chair, a keyboard punching speed, a stamping pressure, and a stamping duration. It includes at least one of a sensor for measuring, a sensor attached to the user for measuring the electromyogram of the user, and a sensor for imaging the user. The presence / absence of seating, position, direction, posture, etc. can be detected by the pressure sensor of the chair. The keyboard stamping speed, stamping pressure, and stamping duration time can be used to calculate the working time or the amount of work, or the amount of fatigue due to the driving operation. The myoelectric amount is related to the fatigue level, and the fatigue level can be calculated by measuring the myoelectric amount. Moreover, the user's imaging can diagnose the presence / absence of the user's seating and posture, the diagnosis of eye fatigue and doze based on the blink analysis.

  Preferably, in the VDT work environment control device of the present invention, the VDT work-related equipment includes a mouse, and the work status monitoring sensor is a myoelectric measurement sensor attached to the mouse. By attaching the myoelectric measurement sensor to the mouse, the user who performs the VDT work does not need to attach the sensor.

  Preferably, in the VDT work environment control device according to the present invention, after the command unit commands the change of the physical work condition, the detection unit detects the improvement of the user workload based on the output of the work status monitoring sensor; Re-instruction means for sending out a command signal instructing the VDT work-related equipment to return the physical work condition to the original setting when the detection means detects improvement. The physical work condition may be returned by the user based on his / her will, but the user's labor can be saved by automatically returning the physical work condition. In addition, since physical work conditions are automatically recovered by appropriate measures such as posture correction and breaks, it can be expected that the user takes such appropriate measures.

  The chair of the present invention includes a mechanism for changing the horizontal position or height in response to a command signal, and changes a physical work condition for the horizontal position or height based on a change command from the control device.

  The desk according to the present invention includes a mechanism for changing the horizontal position or height in response to a command signal, and changes a physical work condition for the horizontal position or height based on a change command from the control device.

  The display according to the present invention includes a mechanism for changing at least one of the horizontal position, height, and luminance in response to a command signal, and at least one of the horizontal position, height, and luminance based on the change command from the control device. Change the physical working conditions.

  The display of the present invention includes a mechanism for changing the illuminance by a command signal, and changes the illuminance based on a change command from the control device.

  Hereinafter, typical embodiments of the present invention will be described.

  FIG. 1 is a schematic diagram showing a VDT operation of a system 10 according to the present embodiment and a user 150 using the system 10. The system 10 is a system capable of controlling a VDT work environment, and a chair 20, a desk 50, a PC (personal computer) 70, a display 80, a keyboard 90, and a lighting fixture as VDT work-related equipment for a user to perform VDT work. 100 is included. That is, the user 150 performs the VDT operation by operating the keyboard 90 while viewing the display 80 placed on the desk 50 while sitting on the chair 20 with his / her eyes 152. The PC 70 is a computer that performs processing related to VDT work, and the lighting apparatus 100 is a light that illuminates the user 150. Below, each structure is demonstrated in detail.

  The chair 20 is for the user 150 to sit for VDT work (the user 150 is not in contact with the chair 20 in the figure for convenience of illustration). The chair 20 includes a backrest portion 22 that supports the back of the user 150, a seating portion 24 that supports the buttocks and thighs of the user 150, a leg portion 26 that stands vertically in a columnar shape below the seating portion 24, and a floor surface that supports the leg portion 26. Is provided with a support portion 28 extending horizontally.

  A characteristic point of the chair 20 is that the chair 20 has a variable mechanism that moves based on a command signal. As the variable mechanism, a backrest angle changing portion 30 provided between the backrest portion 22 and the seating portion 24 for changing the angle of the backrest portion 22 with respect to the seating portion 24, and a leg portion provided between the seating portion 24 and the leg portion 26. Of the seating portion 24 with respect to 26, the seating angle changing portion 32 for changing the front and rear, right and left tilt angles and the right and left rotation angles, the leg height changing portion 34 for changing the height of the leg portion 26, and the support portion 28. There are wheel portions 36 and 38 that are attached to the lower part of each end and are in contact with the floor 160 and change the position of the chair 20 back and forth by rotating. These variable mechanisms are driven by a motor, and the physical working conditions related to the VDT work of the user 150 can be changed by driving the motor. Further, the chair 20 is provided with temperature control devices 40, 42, 44 inside the backrest portion 22 and the seating portion 24. These are variable mechanisms that change the physical work conditions regarding the temperature environment in the VDT work of the user 150. The temperature control devices 40, 42, and 44 can be easily mounted as a high-temperature mechanism using heat generated by electric resistance, but can also be a cooling mechanism using a compressor or the like.

  Electric power for driving the variable mechanism is obtained from a cable (not shown). Moreover, the command about the change direction of a variable mechanism, a change timing, a change width, and a change speed is performed by controlling the electric power transmitted based on the command signal from PC70. Instead of supplying power with a cable, a battery may be built in the chair 20, or a command signal may be sent directly to the operating mechanism by radio waves or infrared rays so that power control or the like is performed in the operating mechanism. Needless to say, a position sensor, a temperature sensor, or the like for detecting the actual operating state of the variable mechanism may be provided.

  The desk 50 is a wide rectangular parallelepiped plate portion 52 whose upper portion is kept horizontal, a vertically extending leg portion 54 that supports the plate portion 52 at a lower portion near the end on the side away from the user 150, and a leg portion 54. The support part 56 extended in parallel with the floor surface 160 is provided. The desk 50 also has a variable mechanism that moves based on the command signal. Specifically, it is provided on the leg part 54, attached to the lower part of each end of the leg height changing part 58 and the support part 56, which changes the height of the leg part 54, is in contact with the floor 160 and rotates. There are wheel portions 60, 62 that change the position of the desk 50 back and forth. By operating these variable mechanisms, the physical work conditions related to the VDT work of the user 150 can be changed. The drive mechanism, power supply mode, and control mode of the variable mechanism are the same as those of the chair 20.

  The PC 70 is a main body of a computer that is used when a user performs VDT work. The PC 70 performs processing corresponding to document creation and the like by a user using hardware having an arithmetic function such as an MPU and various software that defines the operation thereof. A characteristic point of the PC 70 is that it plays a role as a VDT work environment control device that controls physical environment conditions related to the VDT work of the user 150. That is, a signal is received from a sensor for monitoring the VDT work of the user 150, and the physical work condition is changed by operating the variable mechanism of the VDT work-related equipment according to the work situation of the user 150. For this reason, the PC 70 is configured to set an arithmetic expression for calculating the VDT workload based on an input from the sensor, a database, and the like, and to change a corresponding physical work condition according to the VDT workload. A comparison database is set up. Specific operations will be described later.

  The display 80 includes a display unit 82 having an image display surface and a support unit 84 that supports the display unit 82. Then, an image is displayed on the display unit 82 based on the image signal sent from the PC 70. The display 80 includes a display angle changing unit 86 that changes the angle of the display unit 82 with respect to the support unit 84 at a connection portion between the display unit 82 and the support unit 84. The drive mechanism, power supply mode, and control mode of the variable mechanism are the same as those of the chair 20.

  The keyboard 90 is an input device to the PC 70. The keyboard 90 includes a keyboard angle changing unit 92 as a variable mechanism at a lower portion near the end on the side away from the user. The keyboard angle changing unit 92 changes the main body installation angle of the keyboard 90 by changing its height. The drive mechanism, power supply mode, and control mode of the variable mechanism are the same as those of the chair 20.

  The luminaire 100 is provided to illuminate the vicinity of the user 150. In the figure, it is assumed that it is supported from the ceiling, but it may be supported by a desk 50 or the like. The lighting fixture 100 is supplied with electric power from the electric cable 102, and the electric cable 102 is provided with a power control unit 104. The power control unit 104 changes the amount of power and the frequency based on the command signal received wirelessly from the PC 70. That is, the power control unit 104 is also a variable mechanism for physical work conditions related to VDT work such as illuminance and blinking interval.

  The system 10 includes a work status monitoring sensor in addition to the VDT work-related equipment. The work status monitoring sensor is a sensor for monitoring the user's VDT work status. In FIG. 1, pressure sensors 106a, 106b, 106c, and 106d installed on the surface of the backrest portion 22 and the seating portion 24 that come into contact with the user are based on whether the user is seated based on the magnitude and distribution of pressure, It is a work situation monitoring sensor that detects a sitting posture. Thereby, the posture of the user such as the seating position in the front-rear direction and the forward and backward tilt can be grasped. Further, by placing the pressure sensor at a position in a direction perpendicular to the paper surface including the armrests (not shown) (left and right direction of the chair), the user's lateral seating position and posture can be recognized. The output of the pressure sensor is transmitted to the PC 70 wirelessly or via a cable.

  Position sensors 108 and 110 are installed below the support portion 28 of the chair 20, and a position sensor 112 is installed below the support portion 56 of the desk 50. These sensors are work status monitoring sensors that detect the relative position of the chair 20 and the desk 50 and the angle of the chair 20 with respect to the desk by measuring the relative distance based on the transmission delay time of the radio wave. The measurement result is transmitted to the PC 70.

  A myoelectric measurement sensor 114 is attached to the shoulder of the user 150 and a myoelectric measurement sensor 116 is attached to the arm. These are working condition monitoring sensors for measuring the fatigue of the user 150 based on the myoelectric amount of the user 150. The measurement result is transmitted to the PC 70.

  The keyboard 90 is provided with a pressure sensor 118 as a work status monitoring sensor. Thus, the degree of fatigue can be determined based on the strength of keyboard input, and the speed and frequency of keyboard input can also be measured. The measurement result is transmitted to the PC 70. Note that the speed and frequency of keyboard input can also be detected by analyzing a normal keyboard input result in the PC 70.

  A camera 120 is installed on the top of the display 80. The camera 120 is a work status monitoring sensor that images the upper body and the hand of the user 150 to monitor the presence / absence, posture, work status, and the like of the user 150. The image to be captured may be a still image or a moving image. However, it is particularly desirable that the moving image be capable of determining fatigue or activity level based on the user's 150 eye movement or hand movement. The captured image data is sent to the PC 70 for image analysis.

  Next, an outline of the operation of the system 10 will be described with reference to the flowchart of FIG. Usually, the physical work conditions are standard settings according to the physical conditions and preferences of the user 150. Under this standard environment, the user 150 starts the VDT operation (S10). An output signal is sent to the PC 70 as the VDT work environment control device periodically from each work status monitoring sensor or when an event occurs (S12).

  The control device calculates the VDT work load amount such as the VDT work time of the user 150 and the fatigue degree of the user 150 based on the output signal. The VDT workload is a workload related to VDT that is considered to be academically or empirically. The objective VDT workload amount of the user 150 can be obtained by substituting the input value from each sensor, its time change value, etc. into a VDT workload amount, for example, by substituting it into a function prepared in advance. In the example illustrated in FIG. 2, two VDT workloads, which are a continuous work time of the user 150 and an index of the fatigue level of the user 150, are obtained. Then, a determination is made as to whether a predetermined work time has elapsed (S14) or whether a predetermined fatigue level has been measured (S16). Then, when a predetermined work time has elapsed or when a predetermined fatigue level has been measured, the PC 70 sends a notice command signal for changing the environment to the VDT work-related device according to the setting (S18). In particular, the command signal for the advance notice is used to make a notice so as not to give the user 150 a surprise when operating the variable mechanism with spatial movement. Subsequently, the PC 70 sends this command signal for changing the environment to the VDT work-related device according to the setting (S20). Accordingly, the corresponding VDT work-related device operates the variable mechanism so as to satisfy the physical work condition based on the command signal.

  FIG. 3 is a diagram illustrating a state in which the height of the leg height changing unit 34 is increased in the chair 20 as the VDT work-related device as a result. 3 is almost the same as FIG. 1, and the same components are assigned the same numbering or numbering is omitted. The difference between FIG. 3 and FIG. 1 is that the height of the seating portion 24 and the backrest portion 22 of the chair 20 increases due to the height change of the leg height changing portion 34, and accordingly the seating height of the user 150 increases. It is a point. As a result, the user 150 directly perceives that it is time to take a break due to the height being changed, and is forced to rest halfway. In addition, since the height of the user's eyes 152 is relatively high with respect to the display 80, the burden on the eyes 152 of the user 150 is reduced, as is known academically or empirically. An effect of relaxing the user 150 is generated.

  The user 150 can continue the VDT work under the non-standard physical work conditions thus changed, but generally, the user 150 leaves the seat and selects a break (S22). Even in this situation, the PC 70 receives the output of the work situation monitoring sensor (S24), calculates the VDT work load amount regarding the rest time of the user 150 and the degree of recovery of fatigue of the user 150, and compares it with a predetermined value. repeat. When the user's fatigue level is recovered (S26) or when a predetermined break time has elapsed (S28), a re-command signal is sent to the VDT work-related equipment so as to return the physical work condition to the standard. (S30). As a result, the user 150 who returns from the break or who is in physical condition on the spot can continue the VDT work under the standard physical work conditions (S32). It should be noted that the correction to the standard physical work condition can be forcibly performed based on a user instruction.

  There are various settings for non-standard physical working conditions. For example, it is inconvenient if the non-standard state continues when urgent work must be performed. Accordingly, the non-standard state may be maintained for a short time (for example, within 10 seconds) and then automatically returned to the standard state. In addition, when it is intended to force a break, the non-standard state may be a physical work condition that makes it difficult to perform work particularly empirically. In addition, the non-standard state is a physical work condition that reduces the burden on the eyes and the muscles of the body from the academic and empirical viewpoints, so that the user can continue working or interrupt the work. You can get tired while sitting in the chair of what you do. In particular, when it is assumed that the user continues the work, it is not always necessary to change physical work conditions such as an extreme height change as shown in FIG. A small amount of change, such as a change, is effective because it is possible to achieve both physical work conditions relatively close to the standard state and environmental changes.

It is a schematic diagram explaining the usage example of the system which concerns on embodiment. It is a flowchart explaining the flow of a process. It is a schematic diagram when the physical work status is changed in the system.

Explanation of symbols

  10 systems, 20 chairs, 22 backrests, 24 seating parts, 26, 54 legs, 28, 56, 84 support parts, 30 angle changing parts, 32 seating angle changing parts, 34, 58 leg height changing parts, 36, 38 , 60, 62 Wheel part, 40, 42, 44 Temperature control device, 50 desks, 52 plate part, 70 PC, 80 display, 82 display part, 86 display angle change part, 90 keyboard, 92 keyboard angle change part, 100 illumination Appliance, 102 Electrical cable, 104 Power controller, 106a, 106b, 106c, 106d, 118 Pressure sensor, 108, 110, 112 Position sensor, 114, 116 Myoelectric sensor, 120 Camera, 150 users, 152 eyes, 160 Floor surface.

Claims (17)

VDT work using a VDT work-related equipment that includes a chair on which a user is seated, a desk placed in front of the chair, and a display placed on the desk, the physical working conditions of which can be changed by command signals. Calculating means for calculating the user's VDT workload based on the output of the work status monitoring sensor for the user;
Command means for sending a command signal for commanding a change in physical work condition to the VDT work-related equipment based on the VDT work load;
A VDT work environment control device comprising: In the VDT work environment control device according to claim 1,
The VDT work environment control device, wherein the command means commands the change of physical work conditions in a direction to reduce a load on the eyes of the user who looks at the display. In the VDT work environment control device according to claim 1,
The VDT work environment control device, wherein the command means commands the change of physical work conditions in a direction to reduce the muscle tension of the user. In the VDT work environment control device according to claim 1,
The VDT work environment control apparatus, wherein the command means commands the change of physical work conditions in a direction that makes it difficult for the user to continue the VDT work. In the VDT work environment control device according to any one of claims 1 to 4,
The VDT work environment control device characterized in that the physical work condition is a condition regarding a relative height of the chair and the display. In the VDT work environment control device according to any one of claims 1 to 4,
A physical work condition is a condition concerning a horizontal distance between a chair and a display. In the VDT work environment control device according to any one of claims 1 to 4,
The VDT working environment control device, wherein the physical working condition is a condition regarding the brightness of the display. In the VDT work environment control device according to any one of claims 1 to 4,
The VDT work-related equipment includes a lighting device that illuminates the vicinity of the desk,
The VDT work environment control device, wherein the physical work condition is a condition for the illuminance of the lighting fixture. In the VDT work environment control device according to any one of claims 1 to 3,
The VDT work environment control device characterized in that the physical work condition is a condition concerning the temperature of the chair. In the VDT work environment control device according to claim 5 or 6,
A VDT work environment control device comprising: a notice command means for sending a command signal for giving a command for notifying a user of a change before the command means instructs a change of physical work conditions. In the VDT work environment control device according to claim 1,
The work status monitoring sensor is a pressure sensor attached to a user contact surface of a chair, a sensor that measures at least one of a keyboard punching speed, a punching pressure, and a stamping duration, and a user's myoelectricity attached to a user. A VDT work environment control device comprising at least one of a sensor for measuring and a sensor for imaging a user. In the VDT work environment control device according to claim 1,
VDT work-related equipment includes a mouse,
The VDT work environment control device, wherein the work status monitoring sensor is a myoelectric measurement sensor attached to a mouse. In the VDT work environment control device according to claim 1,
Detecting means for detecting an improvement in the workload of the user based on the output of the work status monitoring sensor after the command means instructs to change the physical work condition;
Re-instruction means for sending out a command signal instructing the VDT work-related equipment to return the physical work condition to the original setting when the detection means detects improvement;
A VDT work environment control device comprising: A chair according to claim 1, wherein
With a command signal, it has a mechanism to change the horizontal position or height,
The chair which changes the physical work condition about a horizontal position or height based on the change command from the control apparatus of Claim 1. A desk according to claim 1,
With a command signal, it has a mechanism to change the horizontal position or height,
The desk which changes the physical work condition about a horizontal position or height based on the change command from the control apparatus of Claim 1. A display as claimed in claim 1, comprising:
A mechanism that changes at least one of the horizontal position, height, and brightness according to the command signal,
A display that changes a physical work condition for at least one of a horizontal position, a height, and a luminance based on a change command from the control device according to claim 1. A lighting fixture according to claim 8,
Equipped with a mechanism to change the illuminance by command signal,
The lighting fixture which changes illumination intensity based on the change command from the control apparatus of Claim 1.

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