JP2017058062A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which a sense of hot and cold which a person feels varies depending also upon the amount of clothing and the like, so that the conventional correction according to the activity amount cannot make a resident sufficiently comfortable and there is room for improvement.SOLUTION: An air conditioner includes: human detection means for detecting existence of a person for each region of a plurality of regions which are made by dividing a region to be air-conditioned; temperature detection means for detecting a surface temperature of the person; image processing means for calculating the location and the temperature of the person from the surface temperature detected by the temperature detection means; control means; and wind direction change blades. The control means calculates a warm/cold feeling for each region in which the person exists, and corrects the time for the wind direction change blades to retain according to the warm/cold feeling in each region.SELECTED DRAWING: Figure 14

Description

  The present invention relates to an air conditioner that corrects a wind direction and a set temperature in accordance with a person's position and thermal sensation.

  A conventional air conditioner divides an area to be air-conditioned into a plurality of areas by a plurality of human body detection sensors, detects the presence of a person in each of the divided areas, and detects the amount of human activity in each area. Is detected by the activity amount detection means, and it is detected that there are people in at least two of the plurality of regions, the wind direction changing blades are alternately directed to these two regions, and the wind direction is directed to each region. Energy saving and comfortable air conditioning has been performed by variably correcting the stopping time in which the changed blades are directed in accordance with the activity amount of the person detected by the activity amount detection means (see, for example, Patent Document 1).

  In addition, comfortable air conditioning is performed by appropriately correcting the set temperature according to the detected position of the person and the amount of activity (see, for example, Patent Document 2).

JP 2008-215676 A JP 2008-215764 A

  However, since the sense of hotness and coldness that people feel varies depending on the amount of clothes, etc., it has not been possible to make the residents sufficiently comfortable only by correcting according to the amount of activity in the past, and there was room for improvement.

  The present invention has been made in view of such points, and by comprehensively detecting the sense of hotness and coldness felt by people and correcting the wind direction and set temperature, the amount of activity, the amount of clothes, etc. The purpose is to provide an air conditioner that can always be comfortable even if the number of people and position change.

  In order to achieve the above object, the present invention provides a human detection means for detecting the presence of a person for each of a plurality of areas into which areas to be air-conditioned are divided, a temperature detection means for detecting the surface temperature of a person, An image processing means for calculating the position and temperature of the person from the surface temperature detected by the temperature detection means, a control means and a wind direction changing blade, and the control means calculates a thermal sensation for each region where a person exists. The time for stopping the wind direction changing blade is corrected according to the thermal sensation for each region.

  According to the present invention, by correcting the time to stop the wind direction change blade according to the thermal sensation for each region where people are present, even if the amount of resident's activity, the amount of clothes, etc. You can always be comfortable.

External appearance perspective view of the air conditioner in embodiment of this invention External perspective view to show the infrared sensor installation part of the air conditioner AA sectional view of FIG. Front view of human body detection means of the air conditioner The figure which showed the human body detection field of the air conditioner Human area conversion diagram of human body detection sensor of the air conditioner Activity conversion chart of the air conditioner Front view of temperature detection means of the air conditioner Control block diagram of the air conditioner Thermal image diagram for explaining the method of cutting out the human area of the air conditioner Conceptual diagram for explaining the calculation method of thermal sensation for each area of the air conditioner Flow chart for explaining wind direction control of the air conditioner The figure which showed the wind direction setting for every field at the time of heating of the air conditioner The figure which showed the correction method of the stop time at the time of heating of the air conditioner The figure which showed the area temperature correction value at the time of heating of the air conditioner The figure which shows the thermal sensation temperature correction value of the air conditioner External perspective view of a conventional air conditioner

  According to a first aspect of the present invention, there is provided a human detection means for detecting the presence of a person for each of a plurality of areas into which areas to be air-conditioned are divided, a temperature detection means for detecting a human surface temperature, and a surface temperature detected by the temperature detection means. Image processing means for calculating the position and temperature of the person, a control means and a wind direction changing blade, and the control means calculates a thermal sensation for each area where a person exists, and the thermal sensation for each area. Accordingly, the time for stopping the wind direction changing blade is corrected.

  According to this, by correcting the time to stop the wind direction change blade according to the thermal sensation for each area where people are present, even if the amount of resident's activity, the amount of clothes, etc. Can be comfortable.

  In the second invention, the control means of the first invention corrects the set temperature in accordance with the thermal sensation in each region.

  According to this, since the thermal sensation of the occupant can be adjusted in a wider range by correcting the set temperature in accordance with the thermal sensation for each region where a person exists, it is possible to further improve the comfort.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
The air conditioner according to the present embodiment includes an indoor unit and an outdoor unit that are connected to each other by a refrigerant pipe and a control wiring, and the outdoor unit is provided with a compressor.

  1 to 3 show an indoor unit of this air conditioner. As shown in FIGS. 1 to 3, particularly FIG. 3, the air conditioner main body 1 constituting the exterior of the indoor unit includes a suction port 2 that sucks in air and a blowout port 3 that blows out heat-exchanged air. Yes. The air conditioner body 1 includes a front panel 4 that covers the front surface of the air conditioner body 1.

  Inside the air conditioner main body 1, a filter 5 for capturing dust contained in room air, a heat exchanger 6 for exchanging heat from the taken room air, and room air taken from the suction port 2 through the filter 5. And a once-through fan 7 that generates an airflow for exchanging heat with the heat exchanger 6 and blowing the air from the blowout port 3 into the room.

  The air outlet 3 is provided with up / down air direction changing blades 8 that can open and close the air outlet 3 and change the air blowing direction in the vertical direction. The up-and-down wind direction changing blade 8 is composed of an upper blade 8a and a lower blade 8b, and the upper blade 8a and the lower blade 8b are connected to the rotating shaft of a drive motor such as a stepping motor on either of the rotating shafts at the left and right ends. (Not shown). Then, by the operation of this drive motor, the upper blade 8a and the lower blade 8b rotate in the vertical direction. In addition, the up-and-down wind direction change blade | wing 8 does not consist of the upper blade | wing 8a and the lower blade | wing 8b, and may be comprised with one blade | wing.

  Further, a plurality of left and right air direction changing blades 10 capable of changing the air blowing direction to the left and right are provided in the ventilation path 9 extending from the downstream side of the fan 7 to the upstream side of the air outlet 3. The plurality of left and right wind direction change blades 10 are connected by a connecting bar that moves in conjunction with each other, and the connecting bar is connected to a rotating shaft of a drive motor such as a stepping motor (not shown). And by this operation | movement of this drive motor, the several sheet of left-right wind direction change blade | wing 10 rotates in the left-right direction, respectively.

  Control means 11 is disposed between the top surface of the air conditioner body 1, the front panel 4 and the filter 5. This control means 11 is mounted using a part of the frame constituting the air conditioner main body 1, and controls the fan 7, the up / down air direction changing blade 8, the left / right air direction changing blade 10, the compressor, etc. The operation of the air conditioner is controlled.

  Here, in this air conditioner having the above-described configuration, as shown in FIG. 1, a sensor holding frame 12 is provided between the front portion of the air conditioner body 1, that is, the front panel 4 and the outlet 3. Is provided. The front surface of the sensor holding frame 12 is inclined with respect to the front panel 4 provided substantially vertically.

  The sensor holding frame 12 incorporates a human body detecting means 13 for detecting a human body at one end side thereof, and a temperature detecting means 14 for acquiring a thermal image of a floor surface or a human body temperature at the other end side. The human body detection means 13 and the temperature detection means 14 are covered with a cover 15 as shown in FIG. 1, and FIG. 2 shows a state where the cover 15 is removed.

  Here, the human body detection method by the human body detection means will be described. FIG. 4 is a front view of the human body detection means. The human body detection means 13 is provided with a plurality of human body detection sensors 13l, 13c, and 13r, and each human body detection sensor responds to a change in the amount of infrared rays emitted from the human body. Thus, a pulse signal is output to the control means 11.

  FIG. 5 is a diagram showing human body detection areas. Light distribution is set so that the areas detected by the human body detection sensors 13l, 13c, and 13r are as follows.

Human body detection sensor 13l: LM, CM, LF, CF
Human body detection sensor 13c: CN, LM, CM, RM
Human body detection sensor 13r: CM, RM, CF, RF

  In such a configuration, the control means 11 determines whether or not there is a response from each of the human body detection sensors 13l, 13c, and 13r within a predetermined time T1 seconds (for example, 3 seconds), and the combination of the reaction results is used to determine the response. According to the table in FIG. This is repeated a predetermined number of times M (for example, 10 times), and the number of reactions for each region is accumulated for T1 × M seconds. If the cumulative number of reactions for each area is 1 or more when the predetermined number of times M is repeated, it is determined that there is a person in that area, and if it is less than one, it is determined that there is no person in that area.

Further, the human body detecting means 13 simultaneously detects the amount of activity in the area where the person is detected, and the method for detecting the amount of activity will be described below. The cumulative number of reactions for each region is remembered for the past several times (for example, four times), and the amount of activity for each region is calculated in three stages from the history for the past four times as shown in FIG. Here, the amount of activity “Large” means that the activity is in a wide area such as indoor cleaning, and it feels hot due to an increase in metabolic rate. The activity amount “medium” means that it is active in a narrow area such as cooking, and it feels a little hot due to an increase in metabolic rate. The activity amount “small” means that the activity is somewhat in the same place such as a meal, and no significant change in the metabolic rate is observed.

  Next, a thermal sensation calculation method for each region will be described. FIG. 8 is a front view of the temperature detecting means. The temperature detector 14 includes an infrared sensor 16 that detects the surface temperature of the substance in a non-contact manner by detecting infrared rays radiated from the substance, a sensor holder 17 that holds the infrared sensor 16, and the sensor holder It is comprised from the drive motor 18 which rotates 17 freely in the left-right direction.

  Although the vertical viewing angle of the infrared sensor 16 is approximately the same as the vertical viewing angle α of the human body detection means 13, the left and right viewing angles are narrower than the left and right viewing angle β of the human body detection means 13. By scanning every time (for example, 120 seconds), it is possible to detect an area of the same level as the left and right viewing angle β of the human body detection means 13. Thus, the temperature detection means 14 can acquire the two-dimensional thermal image 103 of the object which exists in the space ahead of the air conditioner main body 1 every T2 second.

  The thermal image 103 acquired by the temperature detection unit 14 is transmitted to the image processing unit 104. The function of the image processing means 104 will be described with reference to FIG.

  First, the image processing unit 104 analyzes the acquired thermal image 103 to identify a region (any of CN to RF) where the person 102 exists, and outputs it to the control unit 11. The identification of the human existence area is the same as the identification method of the human image area in the process of calculating the average value of the temperature of the human image area below, and details will be described later.

  Further, the image processing unit 104 cuts out an image area corresponding to the person 102 from the acquired thermal image 103, and obtains an average value (A value) of the temperatures of the image areas determined to correspond to the person 102 as the human body temperature. Further, the image processing unit 104 acquires the ambient temperature detected by the temperature sensor 106 as the ambient temperature (B value) of the person. Further, the image processing unit 104 calculates a difference temperature between the A value and the B value, that is, C = A−B as the C value, and outputs it to the control unit 11. When a plurality of people are detected by analyzing the thermal image 103, the existence area and the C value are calculated for each person.

  Here, a method of calculating the average temperature (A value) of the person 102 in the image processing means 104 will be described with reference to FIG. Since humans always dissipate heat through metabolism, the surface temperature is always higher than the ambient temperature. Therefore, an image area having a predetermined temperature or higher compared to the ambient temperature detected by the temperature sensor 106 can be set as an image area corresponding to the person 102. In this way, the image processing means 104 specifies a human image area for calculating the A value.

For example, if the ambient temperature is 25 ° C. and an image region that is 1 ° C. higher than the ambient temperature is the image region of the person 102, the image region surrounded by FIG. 10A can be the human image region. In this manner, an image area having a predetermined temperature or higher may be determined as a human image area. In addition to this, it may be added as a condition for specifying a person's image area that the number of continuous pixels of 26 ° C. or more is a predetermined number of pixels or more. By doing so, for example, as shown in FIG. 10B, in addition to the person 102, a lighting device that generates heat when it is turned on is included in the image, and the corresponding region has an image region of 26 ° C. or higher. However, for example, if an image region of 10 pixels or more is continuously recognized as a person at 26 ° C. or higher, a heating object such as a lighting device will not be detected as a person. High human detection is possible.

  In addition, for the identification of the human presence area, the position of the area CN to RF shown in FIG. 5 is calculated from the image position of the foot, with the bottom of the human image area as the foot.

  The control means 11 uses the human existence area from the human body detection means 13 and the amount of activity in the area, and the existence area and C value for each person from the image processing means 104, and the area where the person exists and the temperature of the area. The cooling sensation is calculated every T1 × M seconds, and the method will be described with reference to a conceptual diagram for explaining the thermal sensation calculation method for each region in FIG.

  Table 1 shows an example of the human presence area from the human body detection means 13 and the amount of activity in that area, and the presence of a person is detected in three areas. Table 2 is an example of the existence area and C value for each person from the image processing means 104, and C values of four persons are detected in three areas. First, in step S1, the C value of the person corresponding to each area of Table 1 is obtained from Table 2, and Table 3 is determined. However, since the C values of the two persons are detected in the region RF in Table 2, the average value of both C values is adopted for the region RF in Table 3. In Table 2, since there is no person corresponding to the area CM, the C value of the area CM is unknown.

  Therefore, in step S2, the average value of another area in which the C value is fixed is assigned instead. That is, the average value of the C values of the area CN and the area RF is assigned. This is because the detection of the human body detection means 13 and the temperature detection means 14 is not synchronized, and this may occur. However, the average value of the areas where both the human body detection means 13 and the temperature detection means 14 are detected is calculated. By assigning, a large error is prevented from occurring. In addition, there may be cases where the C value of the person corresponding to each area in Table 1 is not at all in Table 2, but in such a case, the C value in Table 3 is the previous (T1 × M seconds before) in all areas. By using the average value of all C values, it is possible to prevent a large error from occurring.

  In step S3, the thermal sensation of each region where people exist as shown in Table 6 is determined using Table 5. Here, Table 5 is a table for calculating the thermal sensation from the amount of activity and the C value, but since the amount of heat dissipated from the body decreases as the C value decreases, it is changed in a hot (warm) direction. In addition, even if the C value is the same, the amount of metabolism increases as the amount of activity increases.

  As described above, by calculating the thermal sensation by combining the thermal image and the amount of activity, the thermal sensation can be estimated with high accuracy even if the amount of clothes, the amount of activity, or the like changes.

  In the present embodiment, the presence position of the person is detected by the human body detection means, but the presence position of the person may be detected using a thermal image obtained by the temperature detection means.

  In the present embodiment, the activity amount is detected by the human body detection means, but the activity amount may be detected using a thermal image obtained by the temperature detection means.

  Next, the wind direction control of the up / down wind direction changing blade 8 and the left / right wind direction changing blade 10 is performed according to the human presence areas CN to RF detected by the human body detecting means 13, and these controls will be described below.

  Wind direction control during heating is performed by controlling the wind direction in front of the person's feet in the area where it is determined that there is a person, so that warm air reaches the vicinity of the feet, and during air conditioning, the wind direction control is performed above the person's head. By controlling, the cool air reaches above the head. In the present embodiment, the wind direction control is determined for each block including a plurality of regions, and this block will be described first.

  Each region CN to RF is divided into three blocks in the left-right direction as follows, so that even if there are people in a plurality of regions separated from each other in the left-right direction, the vicinity of the plurality of regions can be reliably air-conditioned. .

Block L: areas LM, LF
Block C: areas CN, CM, CF
Block R: Region RM, RF

  FIG. 12 is a flowchart for explaining the wind direction control. After the operation of the air conditioner is started, it is determined in step S11 whether a person is present and whether a C value is detected in the region, and if both are satisfied, step S12 is performed. The process proceeds to step S14. The determination in step S11 is a determination of whether or not the C value of the person whose presence has been detected has been acquired, and is for waiting until the C value can be acquired correctly.

  In step S14, when there is one area where a person is present, that is, there is one area to be air-conditioned, in step S15, the wind direction set according to the area is fixed. FIG. 13 is a diagram showing the wind direction setting for each area during heating, but FIG. 13 (a) shows the downward angle with the horizontal direction reference of the up / down wind direction changing blade, and the lower the area, the lower the direction. ing. FIG. 13B shows the left angle with respect to the front direction of the left / right wind direction changing blade, and the left and right end regions (LM, LF, RM, RF) are bent in the left / right direction.

  If it is determined in step S14 that there is not one area to be air-conditioned, it is determined in step S16 whether the area to be air-conditioned is one block. If the area to be air-conditioned is one block, step S17 is performed. In the block, after the wind direction is stopped for a predetermined time in the area having the maximum distance in the block, the wind direction is repeatedly stopped for a predetermined time in the minimum area, and the maximum distance area and the minimum area are alternately air-conditioned. As a result, the entire area to be air-conditioned can be air-conditioned.

  On the other hand, if there are areas to be air-conditioned in step S16 in a plurality of blocks, in step S18, after cooling for a predetermined time in the leftmost block in the leftmost block during cooling for a predetermined time, in the rightmost block. The air direction is repeatedly stopped for a predetermined time in an area having the maximum distance, and the farthest areas in the both end blocks are alternately air-conditioned. The reason why the distance is the maximum area is that the air blown air does not directly hit the person in the front area during cooling, and the air blown air flows above the head. During heating, after the wind direction is stopped for a predetermined time in the area with the minimum distance in the left end block, the wind direction is repeatedly stopped for a predetermined time in the area with the minimum distance in the right end block. Air-condition areas alternately. The reason why the distance is the minimum area is that the blowing air does not hit the person in the front area during heating, and the blowing air flows at the feet.

  Further, in step S12, it is determined whether or not there are no people during driving. If there are no more people, in step S13, a region that has been detected frequently in the past, that is, a region that has the highest probability of having people is targeted. The wind direction is set as the area.

  Here, the degree of air conditioning that is easy to air-condition and difficult to air-condition in each region is expressed by the expression of air conditioning requirement. It is assumed that the higher the air conditioning requirement, the more difficult the air conditioning, and the lower the air conditioning requirement, the easier the air conditioning. . For example, as the area to be air-conditioned is farther from the air conditioner main body 1 or the area closer to the left and right ends when viewed from the air conditioner main body 1, the blown air is less likely to reach, so the degree of air conditioning requirement increases. Therefore, the time for stopping the wind direction is set as follows, for example, according to the air conditioning requirement level in the region where the wind direction is facing.

Area CN: 60 seconds (low air conditioning requirement)
Areas LM, CM, RM, CF: 90 seconds (medium air conditioning requirement)
Area LF, RF: 120 seconds (high air conditioning requirement)

  In the wind direction control as described above, a method of correcting the time for stopping the wind direction changing blade according to the thermal sensation for each region will be described.

  When heating, people with a low thermal sensation feel “cold” than people with a large thermal sensation, whereas during cooling, people with a high thermal sensation are “hot” than those with a low thermal sensation Since it feels, the stop time of each area | region is increased / decreased according to the thermal sensation in the area | region which should be air-conditioned.

  FIG. 14 is a table showing the correction method of the stop time during heating. First, when the area to be air-conditioned is one block, the wind direction is stopped in the area having the maximum distance and the area having the minimum distance in the block. The correction is made in accordance with the temperature difference in each region. If the difference in thermal sensation between the two areas is small, no correction is made.If the difference in thermal sensation increases, the suspension time in the area where the thermal sensation is small is lengthened. By shortening the time, the area felt cold is air-conditioned for a long time. At the time of cooling, only the correction method in the opposite direction to that of heating is used, and the description is omitted.

  Next, when the area to be air-conditioned is two blocks, the stopping time is corrected according to the difference in thermal sensation for each block in order to stop the wind direction in both end blocks. Here, the thermal sensation for each block is the average thermal sensation in the area where people are present in each of the blocks L, C, and R.

  Next, when the area to be air-conditioned is three blocks, the wind direction is stopped in the block L and the block R, but the stop time correction according to the thermal sensation of the block C is added. Thus, by changing the block L and block R stop time according to the thermal sensation of the block C, the frequency that the wind direction moves between the block L and the block R changes, and the air conditioning degree of the block C can be changed. it can.

  As described above, by correcting the time to stop the wind direction changing blade according to the thermal sensation for each area where people exist, the area for each area depends on the amount of clothes, activity, etc. Since the degree of air conditioning can be changed, the occupant can always be comfortable.

  As described above, the wind direction control is performed according to the area where the person is present, but the higher the air conditioning requirement level, the larger the temperature difference between the set temperature set by the remote controller and the actual temperature in the area where the person is. Therefore, temperature control for minimizing this temperature difference will be described below.

  During heating, a region where the degree of air conditioning requirement is high is difficult for hot air to reach, so this region is corrected to a higher set temperature. On the other hand, in a region where the air conditioning requirement level is low, the set temperature is corrected to be lower. Conversely, during cooling, the higher the air conditioning requirement level, the harder the cold air reaches. Therefore, this region corrects the set temperature lower, while the lower air conditioning requirement level corrects the set temperature higher. FIG. 15 is a diagram showing the region temperature correction value at the time of heating, but the region temperature correction value is changed according to the air conditioning requirement level of each region.

  As an example, when the remote control set temperature is 23 ° C. during heating and there is a person in the area LF, the area temperature correction value is + 1 ° C. Therefore, the control target value (remote control set temperature + area temperature correction value) is 24 ° C. Become. At the time of cooling, only the correction method in the opposite direction to that of heating is used, and the description is omitted.

Next, the region temperature correction when there are people in a plurality of regions will be described in detail.A value obtained by dividing the total value of the region temperature correction values of all regions where people are present by the number of regions where people are present is the region temperature correction value. To do. As an example, when the remote control set temperature is 23 ° C. during heating and there are people in the regions CN and RM, the region temperature correction value is (−1 + 0) /2=−0.5° C. Therefore, the control target value (remote control Set temperature + area correction value) is 22.5 ° C.

In the temperature control as described above, a method for correcting the set temperature according to the thermal sensation for each region will be described. FIG. 16 is a table showing the thermal sensation temperature correction value, but if the thermal sensation in each area is 1 or more, it feels hot, so these areas are corrected to a lower set temperature. On the other hand, if the thermal sensation in each area is −1 or less, it feels cold, so these areas are corrected to a higher set temperature. It should be noted that the cooling and heating are common for the thermal sensation temperature correction value.
As an example, when heating, when the remote control set temperature is 23 ° C., there are people in the region LF, and the thermal sensation in the region LF is −1, the regional temperature correction value is + 1 ° C. and the thermal sensation temperature correction value is +1. Therefore, the control target value (remote control set temperature + region temperature correction value + warm / cool temperature correction value) is 25 ° C.

  Next, in detail about the thermal sensation temperature correction value when there are people in multiple areas, the value obtained by dividing the total value of the thermal sensation temperature correction value of all areas where people are present by the number of areas where people exist. Use thermal temperature compensation value. As an example, when heating, the remote control set temperature is 23 ° C., there are people in the region CN and the region RM, and the thermal sensation in each region is +1 and 0, the region temperature correction value is (−1 + 0) / 2 = −0.5 ° C., and the thermal sensation temperature correction value is (−1 + 0) /2=−0.5, so the control target value (remote control set temperature + region correction value + thermal sensation temperature correction value) is 22 ° C.

  As described above, by adjusting the set temperature according to the thermal sensation in each area where people are present, the temperature adjustment range of the entire room is expanded, so the range of thermal sensation adjustment is also expanded, making the residents more comfortable Can be.

  In this embodiment, correction is performed according to the detected thermal sensation value for each region, but the detected thermal sensation value for each region and the typical thermal cooling at room temperature set by the remote controller. Temperature correction may be performed according to the difference from the feeling value (a value set in advance).

  In this embodiment, the temperature set by the remote controller is corrected. However, the temperature correction may be performed so that the calculated thermal sensation is 0 (neither).

  As described above, the present invention can achieve optimal air-conditioning control by controlling air-conditioning according to the position of people and thermal sensation, so it can be applied not only to general households but also to air conditioners for business use. it can.

DESCRIPTION OF SYMBOLS 1 Air conditioner main body 2 Suction port 3 Outlet 4 Front panel 5 Filter 6 Heat exchanger 7 Fan 8 Vertical wind direction change blade 9 Ventilation path 10 Left and right wind direction change blade 11 Control means 12 Sensor holding frame 13 Human body detection means 14 Temperature detection Means 15 Cover 16 Infrared sensor 17 Sensor holder 18 Drive motor 102 Person 103 Thermal image 104 Image processing means

Claims (2)

Human detection means for detecting the presence of a person for each of a plurality of areas into which areas to be air-conditioned are divided, temperature detection means for detecting the surface temperature of the person, and the position of the person based on the surface temperature detected by the temperature detection means An image processing means for calculating temperature, a control means, and a wind direction changing blade are provided, and the control means calculates a thermal sensation for each region where a person exists, and changes the wind direction according to the thermal sensation for each region. An air conditioner that corrects the time to stop the blades. The air conditioner according to claim 1, wherein the control unit corrects a set temperature in accordance with a thermal sensation for each region.