JP2012207910A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner capable of improving rigidity of a body while preventing dew condensation at an electrical equipment unit by realizing a body configuration in which the electrical unit can be arranged in front of a filter.SOLUTION: The air conditioner includes, in the body of an indoor unit, a blower fan 8, a heat exchanger 6 arranged in front of the blower fan 8, a filter 16 arranged on the upper stream side of the heat exchanger 6, a filter frame 3a, a pedestal frame 5, an electrical unit 1, and a base board 1f on which the electrical unit 1 is placed. The electrical unit 1 includes an electrical board 1a on which various electric components are mounted, and an electrical equipment board holding member 1g which holds the electrical board 1a. It is provided away from the filter 16 by a predetermined interval through the base board 1f on which the electrical equipment board holding member 1g is placed. The base board 1f is laterally arranged across almost the entire internal width of the body, with right and left end parts of the base board 1f secured to any of the side face part of the filter frame 3a, the pedestal frame 5, and the body 2.

Description

  The present invention relates to an indoor unit of an air conditioner equipped with an electrical unit.

  In a conventional air conditioner indoor unit, there are many cases in which an electrical unit having a narrow height and a depth dimension is stored in the space on the side surface of the heat exchanger and the blower fan in the main body, Some of the electrical units are downsized by arranging an electrical board on which various electrical components are mounted in a vertically placed state (see Patent Document 1).

  In addition, there is an indoor electrical device that is disposed between the rear face of the indoor unit chassis or the front surface of the indoor heat exchanger and a decorative cover, and is fixed to the heat exchanger of the indoor unit (see Patent Document 2).

JP 2008-82687 A JP-A-8-135998

  However, in the state where the electrical unit is arranged on the side surface side of the main body, the space of that portion cannot be utilized, and therefore the width of the outlet of the wind circuit cannot be expanded to improve the right and left wind direction performance.

  In addition, in the configuration in which the indoor electrical device is arranged between the front face of the indoor heat exchanger and the decorative cover and the power supply plate is fixed to the heat exchanger, it is directly fixed to the heat exchanger, so that heat is transferred and cooled. Condensation may occur.

  The present invention has been made in view of such problems of the prior art, and an air conditioner in which an electrical unit is disposed in front of a filter to widen the width of an indoor heat exchanger and also has improved reliability. The purpose is to provide.

  In order to achieve the above object, an air conditioner of the present invention is arranged in a main body of an indoor unit, a fan, a heat exchanger arranged in front of the fan, and an upstream side of the heat exchanger. An air conditioner comprising a filter, a filter frame to which the filter is attached, a base frame that is a base of the main body, an electrical unit, and a base substrate on which the electrical unit is placed. The unit includes an electrical board on which various electrical components are mounted, and an electrical board holding member that holds the electrical board, and is provided at a predetermined interval from the filter via a base board on which the electrical board holding member is placed. The base substrate is disposed horizontally over almost the entire inner width of the main body, and the left and right ends of the base substrate are fixed to either the filter frame, the base frame, or the side surface of the main body. It is intended. Thereby, reinforcement can be ensured, and condensation can be prevented from passing between the electrical unit and the filter.

  Further, since the heat transfer from the heat exchanger can be reduced while the electrical unit is placed horizontally, dew condensation can be prevented and the influence on the wind speed is reduced.

  According to the present invention, since the electrical unit is fixed to a member other than the heat exchanger, it is possible to prevent dew condensation and to reinforce the base substrate so as to be arranged horizontally over almost the entire internal width of the main body. Can be secured.

The front view of the indoor unit of the air conditioner in Embodiment 1 of this invention Sectional view along AA in FIG. Sectional drawing along line BB of FIG. 1 of the air conditioner (A) Front side perspective view of electrical unit of the air conditioner (b) CC sectional view of FIG. 4 (a) Rear perspective view of the electrical unit of the air conditioner Wind speed distribution map of the wind circuit around the electrical unit Wind speed distribution map of wind circuit of general air conditioner The figure which shows the shape of the upper and lower blades of the air conditioner in Embodiment 1 of this invention The figure which shows the shape of the side wall of the air conditioner

  1st invention is the filter which attached the said ventilation fan in the main body of an indoor unit, the heat exchanger arrange | positioned ahead of the said ventilation fan, the filter arrange | positioned in the upstream of the said heat exchanger, and the said filter An air conditioner comprising a frame, a base frame that is a base of the main body, an electrical unit, and a base substrate on which the electrical unit is placed, wherein the electrical unit mounts various electrical components A board and an electrical board holding member that holds the electrical board, and is provided at a predetermined distance from the filter via a base board on which the electrical board holding member is placed, and the base board has an internal width of the main body The base substrate is disposed horizontally over almost the entire width, and the left and right ends of the base substrate are fixed to either the filter frame, the frame, or the side surface of the main body. As a result, reinforcement can be ensured, and condensation can be prevented from passing between the electrical unit and the filter.

  According to a second invention, in the first invention, a hole is formed in the base substrate, and a reduction in heat exchange efficiency due to the ventilation resistance of the base substrate can be suppressed.

  According to a third invention, in the first or second invention, the electric circuit board holding member is made of resin, and the base board is made of metal, so that the insulating structure and noncombustibility can be performed.

  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)
An air conditioner used in a general household is composed of an outdoor unit and an indoor unit that are usually connected to each other by refrigerant piping. FIGS. 1 and 2 show the indoor unit of the air conditioner according to the present invention. .

  The indoor unit includes a main body 2 and a movable front panel (hereinafter simply referred to as a front panel) 4 that can open and close the front opening 9a among the openings 9 of the main body 2. When the air conditioner is stopped, the front panel 4 is in close contact with the main body 2 and closes the front opening 9a, whereas when the air conditioner is in operation, the front panel 4 moves away from the main body 2. Then, the front opening 9a is opened. FIG. 3 shows a state in which the front panel 4 closes the front opening 9a. That is, the front surface portion that is the outline of the main body 2 is constituted by the front panel 4, and the top surface portion is constituted by the top surface panel 80. The top panel 80 is formed with a suction hole 80a for sucking air circulated through the room into the main body 2.

  And in the inside of the main body 2, the indoor heat exchanger 6 connected with the compressor (not shown) of the outdoor unit (not shown) by piping, and the room taken in from the front opening 9a and the upper surface opening 9b. It has a blower fan (cross flow fan) 8 for exchanging heat with the heat exchanger 6 and blowing it out indoors. Furthermore, an up-and-down wind direction changing blade (hereinafter simply referred to as “up-and-down blade”) 12 that enables opening and closing of the air outlet 10 that blows heat-exchanged air into the room and changes the air blowing direction up and down, and the air blowing direction Left and right wind direction changing blades (hereinafter simply referred to as “left and right blades”) 14. A filter 16 is provided between the opening 9 (the front opening 9a and the top opening 9b) and the heat exchanger 6 to remove dust contained in the indoor air taken from the opening 9. ing. The filter 16 is attached to the filter frame 3, and a display unit 41 is provided on the lower front side of the filter 16 (above the outlet 10).

  Further, FIG. 4A shows a configuration viewed obliquely on the front side of the electrical unit 1, and FIG. 4B is a cross-sectional view taken along the line CC of FIG. 4A. FIG. 5 shows a case where FIG. 4 is rotated 180 degrees in the horizontal direction and viewed from the back side.

  The configuration of the electrical unit 1 configured as described above will be described. As shown in FIGS. 1, 2, 4, and 5, the electrical unit 1 of the present embodiment includes an electrical board 1 a that is housed on the right half side of the base board 1 f and has various electrical components mounted thereon, It is comprised from the power supply box 1b which accommodates the electrical equipment board | substrate 1a. Here, the base substrate 1 f is reinforced so as to be arranged in a horizontally long shape over substantially the entire internal width of the main body 2. On the left side, a drive mechanical device 42b for opening and closing the front panel 4 is provided. Further, a forced operation switch 44 is provided at the left end. Further, a hole 1c for effectively utilizing the suction openings 9a, 9b during operation is provided between the power supply box 1b and the drive mechanical device 44b. A hole 1c and a power supply box 1b are formed on the substrate 1f side by side. The periphery of the hole 1c is configured to be reinforced.

  A part of the air circulated in the room is guided to the heat exchanger 6 after dust and the like are removed by the filter 16 through the hole 1 c by the operation of the blower fan 8. Therefore, the electrical box 1b is located in front of the front heat exchanger 6b and partially has ventilation resistance. However, by forming the hole 1c next to the electrical box 1b, the heat exchange efficiency is reduced due to the ventilation resistance. Can be suppressed.

  In the case of the embodiment, the power source box 1b is formed to be approximately half the size of the longitudinal width of the front heat exchanger 6b, and the driving mechanism device 42b that operates the hole 1c and the functional components within the remaining width dimension. Is arranged.

  In FIG. 1, the heat exchanger 6 is configured by combining the front heat exchanger 6 b, the rear heat exchanger 6 c, and the blower fan 8 in an inverted V shape, specifically, horizontally in the longitudinal direction of the main body 2. A front heat exchanger 6b is arranged in front of the rotating shaft 8b of the arranged blower fan 8.

  The front heat exchanger 6 b is formed to be bent in a substantially square shape so as to protrude toward the front of the main body 2, and the lower end portion of the front heat exchanger 6 b is located below the lower portion of the blower fan 8. .

The upper part of the front heat exchanger 6b having a substantially square cross section disposed on the front surface of the heat exchanger 6 forms an inclined surface 6a having a certain inclination angle. A filter 16 is disposed so as to cover the outside of the heat exchanger 6 in order to reduce dust and the like in the indoor air from adhering to the heat exchanger 6. Specifically, it arrange | positions so that the heat exchanger 6 may be enclosed along the inclined surface 6a of the front side heat exchanger 6b from the upper part used as the windward side of the front side heat exchanger 6b and the rear side heat exchanger 6c. . More specifically, the filter 16 disposed upstream of the heat exchanger 6 and surrounding the heat exchanger 6 has the same or similar inclination angle as the inclined surface 6a of the heat exchanger 6. The inclined surface 16a is formed.

  A blower fan 8 and a heat exchanger 6 are directly fixed to the frame 5 which is the base of the indoor unit body 2, and the front panel 4 is opened to the front when the operation is stopped as shown in FIG. Since the portion 9a is closed and the upper and lower blades 12 are also closed, the front panel 4, the top panel 80, and the frame 5 form an outer shape of the main body 2 so that the inside is substantially closed.

  And the corner | angular part 81 formed in the inside of the main body 2 with the front panel 4, the top | upper surface panel 80, and the filter 16 forms the internal space in which a functional component is not arrange | positioned in the longitudinal direction. In the operating state as shown in FIG. 2, the corner 81 becomes a part of a wind circuit that sucks in air circulated in the room in order to exchange heat with the front heat exchanger 6 b.

  The top panel 80 is formed with a suction hole 80a for sucking air outside the main body 2. The air sucked from the suction hole 80a by the rotation of the blower fan 8 passes through the corner portion 81 and is guided to the front heat exchanger 6b through the filter to exchange heat, and is blown out from the outlet 10 again.

  In addition, since the electrical unit 1 is positioned above the front heat exchanger 6b, it is possible to prevent the defrosting water from splashing, and it is possible to promote the cooling of the electrical unit 1 with external air.

  A corner 81 formed in the longitudinal direction of the main body 2 is formed above the blower fan 8. The corner unit 81 is formed with the electrical unit 1 in the longitudinal direction. Specifically, as shown in the figure, the electrical unit 1 has a back surface of an electrical board 1a on which various electrical components in the electrical unit 1 are mounted while having the same or similar inclination angle with respect to the inclined surface 16a of the filter 16. A resinous electric board holding member 1g serving as a bottom plate of the power supply box 1b for holding the battery is housed and fixed together with a metal base board 1f so as to face the filter 16 and is horizontally long.

  Thereby, a wind circuit with little ventilation resistance can be formed between the electrical equipment unit 1 and the front heat exchanger 6b.

  Various electrical components mounted on the electrical board 1a are mounted in the direction of the corner 81, and the electrical board 1a is hermetically housed by the metallic base board 1f and the power supply box 1b to form the electrical unit 1. .

  The portion that becomes the lid portion of the power supply box 1b of the electrical unit 1 is inclined by the inclined arrangement of the electrical board holding member 1g, whereby the upper and lower corners of the power supply box 1b have a chamfered structure, The power supply box 1b having a trapezoidal cross section is formed and houses the electrical board 1a.

  As a result, the height of the front edge portion of the top panel 80 can be reduced, and the depth of the front panel 4 from the front can be suppressed to reduce the depth from the wall surface, thereby achieving compactness.

  Further, as shown in FIG. 4B, the electrical board holding member 1g for holding the electrical board 1a is housed in the base board 1f. Specifically, an outer side wall surface is formed outside the side wall surface of the electrical board holding member 1g. The base substrate 1f is inserted from below between the two structures.

Further, the flange portion of the lid member 1h constituting the power supply box 1b that fits with the electric board holding member 1g has a double structure of the inner flange portion 1k and the outer flange portion 1m, and covers the electric board holding member 1g from the outside. Thus, the power supply box 1b is configured by fitting so that a path of a slight gap formed by the flange portion and the side wall surface of the electrical circuit board holding member 1g has a trap shape.

  By being configured as described above, entry of foreign matter into the electrical board 1a can be prevented.

  Further, by making the base substrate 1f made of metal, it is possible to cope with incombustibility, and by housing the electrical board 1a with the resinous electrical board holding member 1g, an insulating structure can be formed. Even if it falls during transportation, damage to the internal electrical board 1a can be protected.

  By these, the width of the wind circuit in the main body 2 and the width of the outlet 10 can be widely arranged.

  Furthermore, the electrical unit 1 is disposed horizontally long at a position away from the inclined surface 6a of the heat exchanger 6 by a distance D1 of 20 mm or more. The distance D1 is a distance measured in the vertical direction from the inclined surface 6a of the heat exchanger 6 toward the electrical unit 1 and is the shortest distance. In addition, the vertical width D2 of the electrical equipment unit 1 in this Embodiment is 100 mm. FIG. 6 shows the wind around the electrical unit 1 when the electrical unit 1 is arranged as described above.

In FIG. 6, the direction and length of the line indicate the wind speed and direction at that position, respectively. As can be seen from FIG. 6, wind also flows along the entire vertical width on the back surface of the electrical unit 1 (between the electrical unit 1 and the heat exchanger 6). That is, by setting the distance D1 to the heat exchanger 6 to 20% or more with respect to the vertical width D2 of the electrical unit 1, it is possible to effectively prevent dew condensation because wind flows across the entire back surface of the electrical unit 1. it can.
Further, by providing the distance D1 in this way, it is possible to ensure the workability of attaching and removing the filter 16.

  Further, by disposing the electrical unit 1 with the distance D3 between the electrical unit 1 and the lower end of the suction opening 2a of the filter 16 being 50 mm or more, the air volume passing through the upper end of the stabilizer 32 is secured, and the suction resistance is reduced. This reduces the occurrence of abnormal noise.

  Further, by disposing the electrical unit 1 above the center 8a position (rotation shaft position) in the height direction of the fan 8 in the wind circuit, the adverse effect of the fan 8 on the wind performance is reduced to the maximum. be able to. Here, FIG. 7 shows a general wind speed distribution of the air conditioner. FIG. 7 shows the wind speed distribution by the fan 8, in which the flow of wind is represented by an arrow, the magnitude of the wind is represented by the length of the arrow, and the direction of the wind is represented by the angle of the arrow. Thus, it can be seen that the upper part of the front surface of the heat exchanger 6 has a lower wind speed than the other parts and is a stable region. On the other hand, the wind speed is high not only in the vicinity of the fan 8 and in the vicinity of the air outlet 10 but also in a portion corresponding to the rear side of the indoor unit 2 and a lower portion of the front surface. Therefore, the provision of the electrical unit 1 in the upper front portion of the indoor unit is a stable arrangement in consideration of the wind speed distribution by the fan 8 and can reduce adverse effects on wind performance.

  Further, by disposing the electrical unit 1 at the corner portion 81 above the position of the outer peripheral upper portion 8b of the fan 8 in the wind circuit, the electrical unit 1 is disposed particularly in a region where the wind speed is slow, and further adverse effects on wind performance are further reduced. Further, it is possible to prevent a decrease in heat exchange efficiency in the front heat exchanger 6b.

Further, the blower fan 8 arranged in the longitudinal direction of the main body 2 and the fan drive motor (not shown) arranged in the direction of the rotation axis for rotating the blower fan 8 vibrate due to the rotation operation of the blower fan 8 and the operation operation of the fan drive motor. May occur, and vibration may be transmitted to other functional parts and resonate. In particular, when an electrical component or the like resonates, there is a possibility that the internal electrical substrate 1a is short-circuited and malfunctions.

  Therefore, by arranging the electrical unit 1 in the corner portion 81 farthest from the blower fan 8, vibration from the blower fan 8 and the fan drive motor can be reduced, and a highly reliable air conditioner can be provided.

  By disposing the electrical unit 1 as described above, it is possible to simultaneously prevent condensation while reducing adverse effects on wind performance. In addition, as shown in FIG. 1, if the cross section of the electrical unit 1 is configured to be a trapezoidal shape, not a rectangle, the electrical unit 1 can be accommodated compactly in the main body 2 of the indoor unit. it can.

  Further, in the case where the front panel 4 is opened and closed as in the present embodiment, the drive arm that automatically opens and closes the front panel in the dead space at the upper front of the electrical unit arranged in the dead space at the upper front of the main body 2 By arranging 42 drive shafts 42a, the outer shape line is maintained and the improvement of the design can be ensured. In this case, the drive shaft 42a may be disposed at least below the upper end surface of the indoor unit and inside the outline line on the front surface of the indoor unit. Moreover, in the air conditioner of this Embodiment, since the front panel 4 opens and closes, a wind can be reliably spread over the surrounding region of the electrical equipment unit 1, and the dew condensation prevention effect can be acquired.

  Specifically, by moving the front panel 4 to the front of the main body 2 by the operation of the drive arm 42, an opening 9a serving as a space is formed between the front panel 4 and the front heat exchanger 6b, and the sending fan Since the front panel 4 can guide the air to the front heat exchanger 6b by the operation of 8, even if there is a ventilation resistance due to the arrangement of the electric unit 1, the electric unit 1 and the front heat exchanger 6b Air can be guided to the space (D1) provided therebetween to suppress a decrease in heat exchange efficiency.

  Next, a fixed configuration of the electrical unit 1 will be described.

  A fan 8, a heat exchanger 6, and an automatic filter cleaning unit 3 are directly fixed to a frame 5 that is a base of the indoor unit body 2. As shown in FIGS. 3 and 4, the electrical unit 1 is fixed to a filter frame 3 a that forms the skeleton of the automatic filter cleaning unit 3, and the right side of the base substrate 1 f of both ends of the electrical unit 1. A hooking portion 1d is provided at the end portion, and a claw 1e is provided at the left end portion, and they are configured to be locked and fixed on both sides of the filter frame 3a.

  In addition, a terminal plate unit 43 for connecting the inner and outer unit connecting wires is installed on the right side of the electrical unit 1 in the horizontal arrangement. The terminal plate 43 is fixedly engaged with a claw (not shown) provided on the right side of the electrical unit 1 on the left side, and a separate part (not shown) fixed on the frame 5 side on the right side. It is fixed to the screw.

  Thus, by fixing the electrical unit 1 to the filter frame 3a, there is no heat transfer from the heat exchanger 6, and condensation can be prevented. In addition, since the same effect will be acquired if it is not fixed to the heat exchanger 6, in addition to fixing to the filter frame 3a like this Embodiment, it fixes to the side surface of the indoor unit main body 2, or the base frame 5. Needless to say.

  Next, the configuration of the blowout port 10 will be described.

  As shown in FIG. 2, the upper and lower blades 12 are provided with a lower blade 12 a that opens and closes the air outlet 10, and a blowing direction of air blown from the air outlet 10 in cooperation with the lower blade 12 a provided above the lower blade 12 a. And an upper blade 12b for controlling the movement. The lower blade 12a is connected to a drive shaft (not shown), while the upper blade 12b is connected to a drive shaft (not shown), and each drive shaft (not shown) is a drive source such as a drive motor ( (Not shown). Moreover, as shown in FIG. 8, the upper blade | wing 12b and the lower blade | wing 12a (not shown) are comprised longer than the horizontal width of the blower outlet 10. As shown in FIG.

  When the air conditioner starts operation, the upper and lower blades 12 are controlled to open to open the outlet 10 and the fan 8 is driven. And by the drive of the fan 8, room air is taken in the inside of an indoor unit via the front surface opening part 2a and the upper surface opening part 2b. The taken indoor air exchanges heat with the heat exchanger 6, passes through the fan 8, passes through the ventilation path 28 formed on the downstream side of the fan 8, and is blown out from the outlet 10.

  Moreover, the blowing direction of the air from the blower outlet 10 is controlled by the upper and lower blades 12 and the left and right blades 14, and the vertical angle of the upper and lower blades 12 and the angle of the left and right blades 14 are controlled by a remote controller ( Controlled by a remote control device).

  Further, the ventilation path 28 located on the upstream side of the air outlet 10 is formed by a rear guider 30 located on the downstream side of the fan 8, a stabilizer 32 located on the downstream side of the fan and facing the rear guider 30, and both side walls 34. Has been.

  The term “stabilizer” described above is located near the downstream of the fan 8 and stabilizes the vortex generated near the front of the fan 8, and is located downstream of the stabilizer and conveyed by the fan 8. Although it can be divided into a front wall portion of a diffuser that is responsible for air pressure recovery, in the present embodiment, these are collectively referred to as a “stabilizer”.

  By setting in this way, on the inside of the air outlet 10, the blowing air is sandwiched between the upper and lower blades 12 (the lower blade 12 a and the upper blade 12 b) and the left and right side walls 34, and the wind direction is changed without leaking up and down and left and right. And blown out from the blowout port 10. On the other hand, on the outside of the air outlet 10, even if the blown air changed to the left and right is blown further to the left and right than the left and right ends of the air outlet 10, it extends outward from the left and right side walls 34 of the air outlet 10. The upper and lower blades 12 can maintain the vertical and horizontal changing directions without spreading.

  As shown in FIGS. 2 and 3, the left and right blades 14 protrude forward from the design surface when facing the front, so when the air conditioner is stopped, When the blades 12 are closed, the upper and lower blades 12 interfere with the left and right blades 14. For this reason, when the operation of the air conditioner is stopped, the air outlet 10 is inclined to the inside of the left and right blades 14 and then controlled to close the air outlet 10 with the upper and lower blades 12, thereby avoiding interference between the upper and lower blades 12 and the left and right blades 14. Yes. As described above, by increasing the size of the left and right blades 14, it is possible to improve the performance such as the wind direction control of the blowing in the left-right direction.

  Moreover, as shown in FIG. 9, the left and right side walls 34 of the air outlet 10 have a cross-sectional shape including an R shape that extends outward toward the air outlet 10 in the ventilation path. And by making the side wall 34 into such R shape, the Coanda effect that a wind flows along the side wall 34 arises. Therefore, by disposing the electrical unit 1 in the upper front portion of the indoor unit main body 2 to widen the air outlet 10 and forming the left and right side walls 34 in such a shape, the blowing performance to the left and right of the wind can be further improved. it can.

  In the air conditioner according to the present invention, it is possible to widen the width of the wind circuit and the width of the air outlet by arranging the electrical unit at the upper front part in the main body, improving the wind direction changing performance and preventing condensation. Therefore, it is useful as various air conditioners including air conditioners used in general households.

DESCRIPTION OF SYMBOLS 1 Electrical unit, 1a Electrical board, 1b Power supply box, 1c Hole part, 1d Hook part, 1e Claw part, 1f Base board, 2 Main body, 3 Filter automatic cleaning unit, 3a Filter frame, 3b Nozzle, 4 Front panel, 5 Underframe, 6 Indoor heat exchanger, 6a Inclined surface, 8 Fan, 8a Center, 8b Upper outer periphery, 9 Opening, 9a, 9b, 10 Air outlet, 14 Left and right air direction change vane, 16 Filter, 16a Inclined surface, 12 Up and down Blade 12a Lower blade, 12b Upper blade, 30
Rear guider, 32 stabilizer, 34 side wall, 41 display unit, 42 drive arm, 42a drive shaft, 42b drive mechanical device, 43 terminal plate unit, 44 forced operation switch

Claims (3)

A blower fan in the main body of the indoor unit, a heat exchanger disposed in front of the blower fan, a filter disposed on the upstream side of the heat exchanger, a filter frame on which the filter is attached, An air conditioner comprising a base frame, an electrical unit, and a base substrate on which the electrical unit is placed, wherein the electrical unit includes an electrical substrate on which various electrical components are mounted, and the electrical substrate An electric circuit board holding member for holding the electric circuit board holding member, and a base substrate on which the electric circuit board holding member is placed. The base board is provided at a predetermined interval, and the base board extends over substantially the entire inner width of the main body. The air conditioner is arranged in a horizontally long manner, and the left and right end portions of the base substrate are fixed to any one of the filter frame, the base frame, or a side surface portion of the main body. The air conditioner according to claim 1, wherein a hole is formed in the base substrate. The air conditioner according to claim 1 or 2, wherein the electrical board holding member is resinous and the base board is metallic.