JP6307705B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner, and more particularly to a configuration of an infrared sensor used for air conditioning control thereof.

  In general, an air conditioner is provided with an infrared sensor in addition to a temperature sensor that detects the temperature of air in a room, and detects the temperature of the room, for example, the floor surface temperature together with the position of the person, thereby making this person's position comfortable. Air conditioning control is becoming mainstream.

  In addition to the above, air-conditioning control using an infrared sensor detects the number of people and the amount of activity of the person using the infrared sensor, calculates the air-conditioning load based on the output, and performs air-conditioning. Numerous control methods have been put into practical use, and a comfortable space has been realized.

  An air conditioner that performs air-conditioning control using such an infrared sensor is provided with an infrared sensor on the front surface of the main body, and this infrared sensor is rotated left and right to detect the temperature state in the room. (For example, refer to Patent Document 1).

  FIG. 14 shows the air conditioner described in the above-mentioned Patent Document 1. This air conditioner is provided with an infrared sensor 102 for detecting a human body and a bed temperature at a substantially central portion of the front surface of the main body 101, and the infrared sensor 102 is rotated left and right. Then, the person in the room and the floor surface temperature are detected, and air conditioning is performed by controlling at least one of the wind direction, the air volume, and the compressor rotational speed based on both information.

JP 2009-92252 A

  The above-described conventional air conditioner using an infrared sensor is capable of advanced air conditioning control based on the output from the infrared sensor, and has become able to make the comfort of the air-conditioned space considerably high. .

  However, the infrared sensor is usually configured by attaching a sensor substrate to a sensor substrate holder, but the sensor substrate is about the size of a fingertip, so it is difficult to attach to the sensor substrate holder. There was a problem of lack of assembly.

  In particular, the sensor board has a sensor on one side, a circuit wiring part on the other side, and a conductive part on both sides, so the sensor board is pinched with a finger without touching the conductive part. It was difficult to set and fix on the substrate holder, resulting in poor assembling and a cost increase. In addition, even if care is taken, the finger may touch the conductive portion and cause a quality defect, leading to an increase in cost due to a decrease in yield.

  The present invention has been made in view of these points, and it is an object of the present invention to provide an air conditioner that can improve the assemblability of an infrared sensor and at the same time can suppress quality defects and can be provided at low cost.

  In order to achieve the above object, the air conditioner of the present invention includes a sensor board and a sensor board holding portion that holds the sensor board, and includes an infrared sensor that is rotatably provided. The board is a printed board having a sensor element on one side and no conductive part on the other side, and the sensor board holding part includes a board holding part for holding an edge of the sensor board.

  According to the present invention, the assemblability of the infrared sensor is improved and the quality defect can be reduced. Therefore, the cost can be reduced correspondingly, and the air conditioner can be provided at a low cost.

1 is an external perspective view of an air conditioner according to Embodiment 1 of the present invention. External perspective view to show the infrared sensor installation part of the air conditioner AA sectional view of FIG. BB sectional view of FIG. The exploded perspective view of the sensor holding frame which installed the infrared sensor of the same air conditioner Front perspective view showing the installation part of the infrared sensor of the air conditioner Half-cut perspective view showing the installation part of the infrared sensor of the air conditioner Perspective view of the infrared sensor of the air conditioner An exploded perspective view of the infrared sensor of the air conditioner The perspective view of the state which removed the sensor board of the infrared sensor of the air conditioner The perspective view which shows the sensor board | substrate holding | maintenance part of the infrared sensor of the air conditioner The perspective view of the state which removed the sensor board from the sensor board holding part of the infrared sensor of the same air conditioner (A) Front view of sensor board holding part of infrared sensor of same air conditioner, (b) CC sectional view of sensor board holding part shown in (a). External perspective view of a conventional air conditioner

  1st invention has a sensor board | substrate and the sensor board | substrate holding | maintenance part which hold | maintains the said sensor board | substrate, It is provided with the infrared sensor provided rotatably, The said sensor board | substrate has a sensor element on one side, The printed circuit board has no conductive portion on the surface, and the sensor substrate holding portion includes a substrate holding portion for holding an edge of the sensor substrate.

  As a result, if the sensor substrate is sandwiched between two fingers and placed on the substrate clamping part, and the finger is pressed against the surface that does not have the conductive part as it is, the edge will fit into the clamping part. Fixed. Therefore, it is not necessary to take time-consuming work of wearing while taking care not to touch the conductive part with the finger, the assembling property is improved and the mounting can be quickly performed, and the conductive part is touched with the finger. As a result, quality defects can be reduced. Therefore, the cost of the infrared sensor itself can be reduced by improving the assemblability of the infrared sensor and reducing the quality defect, and the air conditioner can be provided at a lower cost.

  In a second aspect based on the first aspect, the substrate holding portion includes a receiving rib that contacts one surface of the sensor substrate, and a holding rib that holds the sensor substrate between the receiving rib, An inclined surface that comes into contact with the end surface of the sensor substrate when the sensor substrate is attached and a lower surface that comes into contact with the other surface of the sensor substrate after the sensor substrate is attached are provided at the tip of the sandwiching rib. Is.

As a result, the sensor substrate can be pushed and sandwiched by a simple substrate sandwiching portion that only has ribs, and further cost reduction can be realized by simplifying the configuration.

  According to a third invention, in the first or second invention, the sensor substrate holding portion includes a rising rib on an outer peripheral edge.

  As a result, the rigidity of the sensor board holding part itself is improved, and the sensor board can be pushed in and attached, so that the workability is improved, and the sensor portion of the sensor board attached to the sensor board holding part by the rising rib is improved. Since it also comes to protect, it is possible to prevent the sensor portion from being damaged at the time of transfer in the production process, and to provide a highly reliable infrared sensor.

  In a fourth aspect based on the first to third aspects, the sensor substrate holding portion includes a hollow shaft portion rotated by a rotation shaft, and wiring from the sensor substrate is provided inside the hollow shaft portion. To pass.

  As a result, the infrared sensor can be used for detecting the temperature from one end of the room to the other end by rotating the sensor substrate holding part, and the lead wire from the sensor substrate is twisted even if it is rotated and used. As a result, it is possible to obtain a high-quality infrared sensor without causing any trouble in the rotating operation or breaking the lead wire.

  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 4 show the indoor unit of this air conditioner. As shown in FIG. 1 to FIG. 4, 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 suction port 2 has a shape in which the opening portion 2b on the front surface of the main body is aligned with the suction opening 2a on the top surface portion of the air conditioner main body 1. 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 an up / down air direction changing plate 8 that can open and close the air outlet 3 and change the air blowing direction in the vertical direction. The up-and-down air direction changing plate 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 rotation shaft of a drive motor such as a stepping motor on either of the left and right rotation shafts. (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 board 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.

  An electrical unit 11 is disposed between the top surface of the air conditioner body 1, the front panel 4, and the filter 5. This electrical unit 11 is mounted using a part of the frame constituting the air conditioner main body 1, and controls the fan 7, the vertical wind direction changing plate 8, the left and right wind direction changing blades 10, the compressor and the like. The operation of the air conditioner is controlled.

  Here, in this air conditioner having the above-described configuration, 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. The front surface of the sensor holding frame 12 is inclined with respect to the front panel 4 provided substantially vertically.

  As shown in FIGS. 2 and 5, the sensor holding frame 12 has a human body detection sensor 13 for detecting a human body on one end side thereof, a temperature of a floor surface or a wall surface on the other end side, a surface temperature of the human body or the like. An infrared sensor 14 for detecting both is incorporated.

  Further, the front surface of the sensor holding frame 12 is covered with a single infrared transmission type resin decorative sheet 15 (see FIG. 5) attached to and attached to the sensor holding frame 12. That is, the front of the human body detection sensor 13 and the infrared sensor 14 is covered with the decorative sheet 15, and the human body detection sensor 13 and the infrared sensor 14 are configured to detect the temperature of the human body or the room via the decorative sheet 15. It is.

  The human body detection sensor 13 includes a pyroelectric element type infrared sensor that detects infrared rays radiated from the human body, and detects presence / absence and movement of a person based on a change in the amount of infrared rays in a room to be air-conditioned. The human body detection sensor 13 is attached to the sensor holding frame 12 in a fixed state.

  On the other hand, the infrared sensor 14 includes a sensor group element body in which a large number of thermoelectric element-type sensor elements are arranged, and the temperature of the floor surface or wall surface of the room to be air-conditioned and / or the surface temperature of the human body is measured by infrared rays. The amount is detected. The infrared sensor 14 is attached to the sensor holding frame 12 so as to be rotatable left and right so that the temperature state of the entire room can be detected.

  Hereinafter, the configuration of the infrared sensor 14 will be described with reference to FIGS.

  First, the configuration of the sensor holding frame 12 incorporating the human body detection sensor 13 and the infrared sensor 14 will be described. As shown in FIGS. 3 to 5, the sensor holding frame 12 is configured to cover the human body detection sensor 13 and the infrared sensor 14 by attaching a cover body 17 to the back of the frame portion 16 provided on the outer peripheral edge thereof. . The sensor holding frame 12 is pivotable to the front side with both ends thereof pivotally supported by the air conditioner body 1. The filter 5 located on the back side can be easily attached and detached by rotating the sensor holding frame 12 toward the front side.

  As shown in FIGS. 2 and 6, a sensor that is a substantially circular hole at a position facing the sensor group element body 21 a (see FIG. 8 described later) of the infrared sensor 14 on the front surface of the sensor holding frame 12. A window 18 is provided. Further, a concave groove 19 extending in the left-right direction around the sensor window 18 is provided on the front surface of the sensor holding frame 12, and the bottom of the concave groove 19 extends from the sensor window 18 portion toward the left and right ends. It is configured to incline while protruding forward.

  An infrared sensor 14 is incorporated inside the sensor holding frame 12 so as to face the sensor window 18.

  As shown in FIG. 7, the cover body 17 includes an infrared sensor 14, more specifically, a sensor holding rib 12 a for holding a sensor housing 20, which will be described later, on the sensor holding frame 12. The cover body 17 includes an infrared sensor 14, more specifically, a sensor side rib 12 b that protrudes to the side of the sensor housing 20. The sensor holding rib 12 a and the sensor side rib 12 b are ribs that protrude from the inner surface of the cover body 17 toward the infrared sensor 14.

  As shown in FIGS. 8 to 13, the infrared sensor 14 is provided with a sensor substrate holding portion 22 having a sensor substrate 21 at the lower portion of the sensor housing 20, and the sensor substrate holding portion 22 is attached to the sensor housing 20. A motor 23 provided on the upper portion, for example, a stepping motor, is rotatable in the left-right direction as indicated by an arrow. Thereby, the sensor group element body 21 a provided on the sensor substrate 21 rotates in the left-right direction and can scan the entire area in the room through the sensor window 18 and the concave groove 19.

  As shown in FIGS. 10 to 12, the sensor substrate holding part 22 includes a flat part 22 b having an opening 22 a, a rising rib 24 rising at the outer peripheral edge of the flat part 22 b, and a hollow shaft part 25 provided on the upper part. It has. A substrate clamping part 26 that clamps the sensor substrate 21 is provided inside the rising rib 24.

  The substrate clamping unit 26 includes a receiving rib 27 that receives the sensor substrate 21 and a clamping rib 28. Each of the receiving rib 27 and the sandwiching rib 28 is a rib protruding in the same direction as the rising rib 24 from the flat surface portion 22b. Each of the receiving rib 27 and the holding rib 28 is provided in a pair with the opening 22a interposed therebetween.

  The height of the receiving rib 27 is lower than the height of the rising rib 24, and the height of the sandwiching rib 28 is substantially equal to the height of the rising rib 24. At the tip of the sandwiching rib 28, a projecting portion 28a projecting to the opposite side of the pair of sandwiching ribs 28 is provided. The protruding portion 28a includes a lower surface 28a1 that is a substantially parallel surface facing the flat portion 22b, and an inclined surface 28a2 that is inclined so that the height of the protruding portion 28a decreases toward the tip of the sandwiching rib 28. . The inclined surfaces 28a2 are provided on the surfaces of the pair of sandwiching ribs 28 that face each other.

  The distance between the tip of the receiving rib 27 and the lower surface 28 a 1 of the holding rib 28 in the direction in which the receiving rib 27 or the holding rib 28 protrudes is slightly larger than the plate thickness of the sensor substrate 21.

  The sensor substrate holding unit 22 includes pins 32 for regulating the position of the sensor substrate 21. The pin 32 is a substantially cylindrical protrusion that protrudes in the same direction as the rising rib 24 from the flat surface portion 22b. The sensor substrate 21 has a circuit pattern such as a conductive foil that electrically connects the sensor group element body 21a, the connector portion 29, and the sensor group element body 21a to the connector portion 29 on one surface (hereinafter referred to as the front surface) of the substrate. And a conductive portion which is a wiring. The other surface (hereinafter referred to as the back surface) of the sensor substrate 21 is a smooth surface not provided with a conductive portion such as an electronic component or circuit pattern wiring such as a conductive foil. That is, the back surface of the sensor substrate 21 remains the substrate.

  The substrate is a paper phenol plate in which a paper base material is hardened with a phenol resin containing fats and oils, or a glass / epoxy plate in which a cloth woven with glass fibers is hardened with an epoxy resin.

  The sensor substrate 21 includes a connector portion 29 for connecting the lead wire 30 at one end. The lead wire 30 is an electric wire that exchanges electrical signals and the like between the sensor group element body 21a and a control unit (not shown).

  Further, the sensor substrate 21 includes an insertion hole 33 into which the pin 32 is inserted on the side where the connector part 29 is provided and the opposite side across the sensor group element body 21a.

  The sensor substrate 21 is positioned so that the sensor group element body 21 a faces the opening 22 a and is held by the sensor substrate holding unit 22.

  More specifically, the planar direction of the sensor substrate 21 is regulated by contacting both ends of the sensor substrate 21 with the pair of sandwiching ribs 28 (see FIG. 13A). Furthermore, it is desirable that the position of the sensor substrate 21 is regulated by inserting the pin 32 into the insertion hole 33. Further, in the direction perpendicular to the plane of the sensor substrate 21, the tip of the receiving rib 27 is in contact with the front surface of the sensor substrate 21, and the lower surface 28 a 1 of the protruding portion 28 a of the sandwiching rib 28 is in contact with the back surface of the sensor substrate 21. Thus, the sensor substrate 21 is sandwiched between the receiving rib 27 and the sandwiching rib 28 (see FIG. 13B).

  When the sensor substrate 21 is mounted on the sensor substrate holder 22, the front surface of the sensor substrate 21, that is, the surface on which the sensor group element body 21a is provided is the flat portion 22b of the sensor substrate holder 22 except for the opening 22a. Covered with Moreover, as shown in FIG.13 (b), a predetermined clearance is provided between the sensor group element body 21a and the plane part 22b. That is, the sensor group element body 21 a is provided at a position recessed from the flat surface portion 22 b of the sensor substrate holding portion 22 to the back side of the sensor substrate 21.

  A method for mounting the sensor substrate 21 to the sensor substrate holding part 22 will be described below. The sensor substrate 21 is first brought into contact with the inclined surface 28a2 of the sandwiching rib 28 so that the edge of the sensor substrate 21, for example, both left and right edges, is pinched with two fingers and the front surface of the sensor substrate 21 faces the flat portion 22b. More desirably, the sensor board holding part 22 is held so that the holding rib 28 protrudes upward, and the sensor board 21 is placed on the inclined surface 28a2 of the holding rib 28 so that the front surface of the sensor board 21 faces the flat part 22b. .

  At this time, by positioning the sensor substrate 21 so that the pin 32 is positioned to face the insertion hole 33, that is, the pin 32 can be seen from the insertion hole 33, the sensor substrate 21 can be easily attached to the sensor group. The element body 21a can be positioned to face the opening 22a.

  Next, the back surface of the sensor substrate 21, that is, the surface on which the conductive portion is not provided is pushed with a finger. Thereby, the edge of the sensor substrate 21 contacts the inclined surface 28a2 and is pushed into the flat portion 22b side while expanding the pair of sandwiching ribs 28.

  Since the front surface of the sensor substrate 21 and the tip of the receiving rib 27 are in contact with each other, the sensor substrate 21 is not pushed further. Then, in a state where the front surface of the sensor substrate 21 and the front end surface of the receiving rib 27 are in contact with each other, the pair of sandwiching ribs 28 is in a state before being spread, and the lower surface 28a1 of the protruding portion 28a is in contact with the back surface of the sensor substrate 21. Further, the pin 32 is inserted into the insertion hole 33.

  As a result, the front surface of the sensor substrate 21 is received by the tip of the receiving rib 27, and the edge of the sensor substrate 21 is sandwiched between the lower surface 28 a 1 of the protruding portion 28 a of the clamping rib 28 and the tip of the receiving rib 27. The

  In this way, the sensor substrate 21 can be attached to the sensor substrate holding portion 22 simply by pushing the sensor substrate 21 between the both ends of the sandwiched ribs 28 with the fingers sandwiched between the both ends. Even so, it can be easily attached to the sensor substrate holder 22.

  In addition, as shown in FIG. 9, the sensor substrate holding portion 22 has a hollow shaft portion 25 penetrating the sensor housing 20, and an intermediate shaft 23 b is provided on the shaft 23 a of the motor 23 disposed on the sensor housing 20. And is adapted to rotate as the motor 23 rotates.

  A coil spring 31 is suspended between the sensor substrate holding part 22 and the sensor housing 20. The coil spring 31 urges the hollow shaft portion 25 in either the clockwise or counterclockwise rotation direction of the shaft 23a. The direction in which the coil spring 31 is biased is opposite to the direction in which the shaft 23a is rotated when the sensor substrate holding unit 22 detects the room temperature. For example, if the rotation direction of the shaft 23a when the sensor substrate holding unit 22 detects the room temperature is clockwise, the coil spring 31 biases the hollow shaft portion 25 counterclockwise.

  According to this, since there is no play of the gear of the motor 23 on the side opposite to the rotation direction of the shaft 23a, the backlash of the motor 23 can be prevented when the sensor substrate holder 22 rotates in the direction of detecting the room temperature.

  Further, the hollow shaft portion 25 of the sensor substrate holding portion 22 is disposed coaxially with the shaft 23a. That is, the hollow shaft portion 25 is directly connected to the shaft 23a of the motor 23 through only the intermediate shaft 23b for expanding the diameter of the shaft 23a without using a gear or a link. According to this, the influence of the play of the gear which the motor 23 has can be suppressed to the minimum.

  The lead wire 30 connected to the connector portion 29 is wired through the hollow shaft portion 25 of the sensor substrate holding portion 22.

  The sensor substrate holding part 22 and the motor 23 are integrated into the sensor housing 20 and unitized.

  Further, the motor 23 can rotate the sensor substrate holding part 22 beyond the rotation range for detecting the temperature in the room, and the infrared sensor 14 is a sensor without using the decorative sheet 15. The temperature of the holding frame 12 itself can also be detected. More specifically, the infrared sensor 14 detects the temperature of the sensor side rib 12b located on the side of the sensor holding frame 12.

  Then, by correcting the temperature of the room detected by the infrared sensor 14 with the temperature of the sensor holding frame 12, the influence of the temperature of the decorative sheet 15 can be corrected.

  In this embodiment, the sensor holding frame 12 provided with the infrared sensor 14 and the human body detection sensor 13 further displays the operation state of the air conditioner controlled by the electrical unit 11 at a substantially central portion thereof. A display unit 34 is provided.

  As shown in FIG. 3, the display unit 34 includes an LED 36 on a printed circuit board 35 disposed on the inner surface of the sensor holding frame 12 and a light guide 37 that guides light from the LED 36. A light emitting surface 37a of the light body 37 is provided at the edge of the sensor holding frame 12, and the corner X where the edge of the sensor holding frame 12 and the edge of the front panel 4 are in contact with each other emits light. The light emission of the light guide can be reliably recognized from the two directions on the front side of the sensor holding frame 12 and the front side of the front panel 4.

  About the air conditioner comprised as mentioned above, the effect is demonstrated next.

First, the air conditioner performs air conditioning of the room by exchanging heat from the air sucked in from the air inlet 2 by the heat exchanger 6 and blowing it out from the air outlet 3. The human body detection sensor 13 provided on the sensor holding frame 12 detects the presence / absence of the person and the movement of the person, and the infrared sensor 14 rotates to the left and right to the temperature of the floor or wall surface of the room to be air-conditioned or the surface of the human body. The electrical unit 11 detects the temperature or both of them, and controls the fan 7, the up / down air direction change plate 8, the left / right air direction change blade 10, the compressor, and the like based on the temperature outputs to perform air conditioning.

  In the present embodiment, the infrared sensor 14 is configured to attach the sensor substrate 21 to the sensor substrate holder 22. Then, the sensor substrate 21 can be easily mounted on the sensor substrate holding portion 22 simply by being held by the substrate holding portion 26 provided in the sensor substrate holding portion 22. For this reason, the assembly of the infrared sensor 14 becomes easy.

  Further, since the conductive portion is not provided on one surface of the sensor substrate 21, there is no possibility of touching the conductive portion when the sensor substrate 21 is pushed into the sensor substrate holding portion 22 with a finger. For this reason, generation | occurrence | production of the quality defect which touches a conductive part at the time of mounting | wearing of the sensor board | substrate 21 and damages a conductive part can be suppressed. In addition, workability is improved because there is no need to take care not to touch the conductive portion.

  As described above, the ease of mounting the sensor substrate 21 improves the assemblability and reduces the quality defects caused by touching the conductive parts, thereby reducing the cost of the infrared sensor itself, thereby providing an air conditioner at a lower cost.

  Further, since the sensor substrate holding part 22 can be easily mounted even if it is approximately the same size as the sensor substrate 21, the sensor substrate holding part 22 can be reduced in size, and thus the infrared sensor 14 as a whole can be reduced in size. Further, if the sensor substrate holding portion 22 provided to be rotatable is made compact, the required torque of the motor 23 can be reduced, and thus the entire infrared sensor 14 can be made compact.

  In addition, the sensor substrate holding configuration of the infrared sensor 14 includes a receiving rib 27 that receives the sensor substrate 21 and a clamping rib 28 that clamps the edge of the sensor substrate 21 between the receiving rib 27. For this reason, the sensor board | substrate 21 can be pushed in and clamped by the simple board | substrate clamping part 26 which only provides a rib. Thereby, the further cost reduction by simplification of a structure can be aimed at.

  Further, since the flat surface portion 22b of the sensor substrate holding portion 22 covers the surface of the sensor substrate 21 on which the sensor group element body 21a is provided, the sensor group element body 21a can be protected and can be transferred during the production process. It is possible to prevent the sensor portion from being damaged at the time of maintenance or the like, and to provide a highly reliable infrared sensor 14.

  Further, since the sensor group element body 21a is provided on the back side of the sensor substrate 21 with respect to the flat portion 22b, the sensor portion can be prevented from being damaged at the time of transfer in the production process, and the highly reliable infrared sensor 14 can be prevented. It can be.

  Further, since the sensor substrate holding portion 22 of the infrared sensor 14 is provided with the rising rib 24 on the outer peripheral edge thereof, the rigidity of the sensor substrate holding portion 22 is improved, and the sensor substrate 21 can be pushed in and attached with peace of mind. Improve workability. In addition, since the rising rib 24 also serves as a protection portion for the sensor group element body 21a portion of the sensor substrate 21 attached to the sensor substrate holding portion 22, the sensor portion can be prevented from being damaged during transfer in the production process. The infrared sensor 14 having high reliability can be obtained.

Further, the infrared sensor 14 is rotationally driven by a motor 23. At this time, since the lead wire 30 from the sensor substrate 21 is wired through the hollow shaft portion 25 of the sensor substrate holding portion 22, the sensor substrate holding portion. Even if the 22 rotates to detect the temperature from one end of the room to the other end, the lead wire 30 from the sensor substrate 21 is not twisted or the like so that the rotation operation is not hindered or the lead wire is not broken. The infrared sensor 14 can be used.

  Further, in this embodiment, the infrared sensor 14 suspends the coil spring 31 between the sensor housing 20 and the sensor substrate holding part 22, and the temperature of the floor surface or the wall surface or the surface temperature of the human body or both. Since it is configured to receive a force in the direction opposite to the direction in which the temperature is detected, even if the motor 23 itself has a backlash, it is not affected by this backlash and is accurately positioned as instructed by the motor control pulse. It can be rotated and stopped to perform highly accurate temperature detection.

  Moreover, since the backlash is eliminated by suspending the coil spring 31 between the sensor substrate holding part 22 and the sensor housing 20, the motor 23 is a motor having no backlash prevention function, that is, a general commercially available one. An inexpensive and highly versatile motor can be used, and a significant cost reduction can be realized.

  Further, since the infrared sensor 14 has a sensor substrate holding portion 22 with a sensor mounted thereon and a motor 23 for rotating the sensor substrate holding portion 22 integrated with the sensor housing 20 as a unit, Simply attaching the body 20 to the sensor holding frame 12 enables easy mounting. Therefore, the number of assembling steps can be reduced and the cost can be further reduced as compared with the case where the sensor housing 20, the sensor substrate holding part 22, and the motor 23 are separately attached.

  The sensor holding frame 12 to which the infrared sensor 14 is attached has a concave groove 19 extending in the left-right direction around the sensor window 18, and the bottom of the concave groove 19 extends from the sensor window 18 portion to the left and right ends. The infrared sensor 14 provided so as to face the sensor window 18 of the sensor holding frame 12 is provided at a position recessed from the surface of the sensor holding frame 12. In addition, the temperature in the room can be detected at a wide angle along the slope of the bottom of the concave groove 19. Accordingly, the front surface of the sensor holding frame 12 can be kept flat and the temperature state in the room can be detected without causing the infrared sensor 14 to protrude from the surface. It can be good.

  In addition, since the front side of the infrared sensor 14 is covered with the decorative sheet 15, the infrared sensor 14 cannot be seen from the outside, and there is no sense of incongruity. Further, dust does not collect in the gap between the rotating parts of the sensor housing 20.

  In the air conditioner of this embodiment, since the infrared sensor 14 covers the front of the infrared sensor 14 with the decorative sheet 15 as described above, the temperature of the decorative sheet 15 is also detected and affected. Become. However, since the decorative sheet 15 is a sheet having infrared transparency, it is difficult to directly detect only the temperature of the decorative sheet 15 itself.

  However, in this embodiment, the infrared sensor 14 can be rotated to a position where only the sensor holding frame 12 on which the decorative sheet 15 is mounted is detected, and the sensor holding frame is not interposed at this position via the decorative sheet 15. The temperature of the body 12 is detected, and this temperature is taken in to correct the room temperature.

  Therefore, in this air conditioner, since the infrared sensor 14 does not erroneously detect the temperature state of the room due to the influence of the temperature of the decorative sheet 15, it accurately detects the temperature state of the room. Is possible.

  Further, since the temperature of the sensor holding frame 12 is detected using the infrared sensor 14, it is not necessary to separately provide a dedicated temperature sensor or the like for detecting and correcting this, and the configuration is simplified. Cost increase for temperature correction can also be suppressed.

  The sensor holding frame 12 provided with the infrared sensor 14 includes a display unit 34, and the display unit 34 has a light guide 37 that guides light from the LED 36 at the end of the sensor holding frame 12. Since light is emitted at the corner X where the edge of the sensor holding frame 12 and the edge of the front panel 4 are in contact, two directions on the front side of the sensor holding frame 12 and the front side of the front panel 4 are provided. Thus, the light emission of the light guide 37 can be reliably recognized. Therefore, the lighting state of the display unit 34 can be accurately recognized not only from the vicinity of the air conditioner main body 1 but also from a distance, so that it is easy to use.

  As mentioned above, although the air conditioner concerning the present invention was explained using the above-mentioned embodiment, the present invention is not limited to this.

  For example, the sensor substrate 21 has been described as not having a conductive portion formed on the back surface. However, a conductive foil is also printed on the back surface, and the conductive portion made of the conductive foil is coated with an electrically insulating resin or the like. Alternatively, the configuration may be such that the conductive portion is not provided.

  That is, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. That is, the scope of the present invention is shown not by the above description but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

  As described above, according to the present invention, the assemblability of the infrared sensor is improved and the quality defect can be reduced. Therefore, the cost can be reduced correspondingly, and the air conditioner can be provided at a low cost. Therefore, it can be widely applied to air conditioners for business use as well as general home use.

DESCRIPTION OF SYMBOLS 1 Air conditioner main body 2 Suction port 3 Outlet 4 Front panel 5 Filter 7 Fan 8 Vertical wind direction change board 10 Left and right wind direction change blade 11 Electrical unit 12 Sensor holding frame 12a Sensor holding rib 12b Sensor side rib 13 Human body detection sensor 14 Infrared sensor 15 Decorative sheet 16 Frame portion 17 Cover body 18 Sensor window 19 Concave groove 20 Sensor housing 21 Sensor substrate 21a Sensor group element body 22 Sensor substrate holding portion 22a Opening 22b Planar portion 23 Motor 23a Shaft 23b Mediating shaft 24 Rising rib 25 Hollow shaft portion 26 Substrate clamping portion 27 Receiving rib 28 Holding rib 28a Protruding portion 28a1 Lower surface 28a2 Inclined surface 29 Connector portion 30 Lead wire 31 Coil spring 32 Pin 33 Insertion hole 34 Display portion 36 LED
37 Light guide

Claims (3)

A sensor board and a sensor board holding part for holding the sensor board; and an infrared sensor provided rotatably, the sensor board having a sensor element on one side and a conductive part on the other side. The sensor substrate holding portion includes a substrate holding portion that holds an edge of the sensor substrate, and the substrate holding portion includes a receiving rib that contacts one surface of the sensor substrate, and the receiving rib. A sandwiching rib for sandwiching the sensor substrate, and a tip portion of the sandwiching rib is attached with an inclined surface in contact with an end surface of the sensor substrate when the sensor substrate is mounted, and the sensor substrate is mounted. And an air conditioner provided with a lower surface in contact with the other surface of the sensor substrate . The air conditioner according to claim 1 , wherein the sensor substrate holding unit includes a rising rib on an outer peripheral edge. 3. The air according to claim 1 , wherein the sensor substrate holding portion includes a hollow shaft portion that is rotated by a rotation shaft, and the wiring from the sensor substrate is passed through the hollow shaft portion. Harmony machine.