JP2013167441A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensively achievable air conditioner having a terminal block with high substrate mounting reliability by preventing stress applied in insertion/removal of an internal/external connection line from being applied to a soldered part of the terminal block.SOLUTION: An air conditioner includes: an air conditioner body having an electrical component box housing a substrate and the like; a terminal block fixed to the vicinity of the opening part of an electrical component box and equipped with a plurality of terminals, which are used for inserting/removing a core wire of the internal/external connection line, on one surface and a soldered electrode on the other surface; and a substrate which is used for mounting the terminal block and in which the soldered part is soldered to a soldered electrode, the substrate is fixed only to the terminal block.

Description

  The present invention relates to an air conditioner, and more particularly to a substrate on which a terminal block is mounted.

  In order to reduce the number of parts of a separate air conditioner as a conventional air conditioner terminal block mounting structure and simplify service work such as repairs, a printed circuit board is installed in the electrical component box provided in the indoor unit. It has been proposed that a terminal block that is detachably housed and is provided in an electrical component box and that is connected to a connection line between an indoor unit and an outdoor unit is mounted on the surface of a printed circuit board (for example, see Patent Document 1). ).

Japanese Patent Laid-Open No. 10-259929 Japanese Patent Application Laid-Open No. 2003-065558 JP 2001-339183 A Japanese Utility Model Publication No. 05-090989 Japanese Patent Laid-Open No. 08-064277

  Since the terminal block mounted on the conventional board is fixed only to the board, the stress applied when inserting / removing the internal / external connection line that electrically connects the indoor unit and outdoor unit of the air conditioner is In addition, the strength of the soldering part is reduced and the reliability is lowered.

  In addition, it is necessary to bond the terminal block to the substrate, which increases the processing cost. In addition, the terminal block is equipped with a thermal fuse to cut off the power supply to the terminal block in the event of abnormal heat generation due to an increase in contact resistance between the terminal block and the internal / external connection line. The thermal fuse is connected to the lead wire by caulking or the like. Therefore, there has been a problem that the machining operation becomes complicated and the machining cost becomes high.

  The present invention has been made to solve the above-described problems. By preventing stress applied when inserting / removing the inner and outer connecting wires from being applied to the soldered portion of the terminal block, the terminal block can be mounted on the board. An object is to provide an air conditioner that is highly reliable and can be realized at low cost.

  An air conditioner according to the present invention includes an air conditioner main body having an electrical component box for storing a substrate and the like, and a plurality of fixing points that are fixed to the electrical component box by a plurality of fixing points, A terminal block having a terminal on one surface and a soldering electrode on the other surface, the terminal block is mounted, a soldering portion is provided at one end, and the soldering portion is soldered to the soldering electrode. The substrate is fixed only to the terminal block and does not come into contact with anything other than the terminal block.

  In the air conditioner according to the present invention, due to the above configuration, the stress applied when the connecting wire connected to the terminal is inserted / extracted is applied to the main body that fixes the terminal block, and to the soldering part that connects the terminal block and the substrate There is an effect that the reliability of the terminal block mounting can be increased by preventing the strength from being lowered at the soldered portion without applying stress. Furthermore, it is not necessary to bond the terminal block and the substrate, and the processing cost can be reduced. Furthermore, the insertion / extraction work of the core wire of the inner / outer connection line can be easily performed.

FIG. 1 is a diagram showing the first embodiment, and is a cross-sectional view of a terminal block 6 and a substrate peripheral portion of the electrical component box 1. FIG. 2 is a diagram showing the first embodiment, and is a plan view of a component mounting surface of the terminal block board. FIG. 3 is a diagram showing the first embodiment, and is a plan view of a soldering surface of the terminal block substrate. FIG. 4 is a diagram showing the first embodiment, and is an electrical wiring diagram around the terminal block 6. FIG. 5 is a diagram showing the first embodiment, and is a plan view showing an example of a board arrangement when the terminal block board 4 and the power supply board 5 are manufactured integrally.

Embodiment 1 FIG.
1 to 5 show the first embodiment. FIG. 1 is a cross-sectional view of the terminal block 6 and the board peripheral portion of the electrical component box 1. FIG. 2 is a plan view of the component mounting surface of the terminal block board 4. FIG. Fig. 4 is a plan view of the soldering surface of the terminal block substrate 4, Fig. 4 is an electrical wiring diagram around the terminal block 6, and Fig. 5 shows an example of the board arrangement when the terminal block substrate 4 and the power supply substrate 5 are manufactured integrally. It is a top view.

  In FIG. 1, an electrical component box 1 (an example of a predetermined portion of an air conditioner body) is provided on a side portion of an indoor unit (not shown) of the air conditioner. The housing of the electrical component box 1 is composed of an outer box 2 made of sheet metal and an inner box 3 made of resin. A terminal block substrate 4 and a power supply substrate 5 are provided inside the electrical component box 1. Although the terminal block substrate 4 and the power supply substrate 5 are divided in the present embodiment, the terminal block substrate 4 and the power supply substrate 5 may be integrated. The terminal block substrate 4 or the terminal block substrate 4 and the power supply substrate 5 are integrated, or another substrate (for example, a control substrate) is integrated. The entire air conditioner indoor unit or outdoor unit including the outdoor unit is an air conditioner. An air conditioner main body refers to an indoor unit main body (housing) of an air conditioner or an air conditioner main body (housing) that is entirely installed indoors.

  A terminal block 6 having a plurality of terminals, an outdoor unit power supply relay 7 for controlling power supply to the outdoor unit, a fuse 8, a capacitor 9, and a varistor 10 (see FIG. 2) are soldered to the terminal block substrate 4.

  The concave shape 6a of the terminal block 6 and the convex shape 3a of the inner box 3 which is the surrounding structure are fitted, and the terminal block 6 is fixed to the inner box 3 with screws 11. At this time, the terminal block substrate 4 is not in contact with or fixed to the structure around the substrate of the inner box 3, but is connected and supported only with the terminal block 6, and the soldering electrode 6b is fixed by the soldering portion 6c. ing. When the electrical box 1 is not used, the terminal block 6 is fixed to a predetermined portion of the air conditioner body, and the terminal block substrate 4 on which the terminal block 6 is mounted is fixed only to the terminal block 6 and the air Make sure that it does not come into contact with or be fixed to the main unit.

  Further, in order to electrically connect the terminal block substrate 4 and the power supply substrate 5, a board direct attachment harness 12 is soldered to the terminal block substrate 4 and the power supply substrate 5.

  The power supply board 5 is provided with a connector 14 for connecting a harness 13 that is electrically connected to a control board (not shown) provided separately.

  The core wire 15a of the inner / outer connection line 15 for electrically connecting the indoor unit and the outdoor unit of the air conditioner enters the interior of the electrical component box 1 from the opening 1a of the electrical component box 1, and is a terminal insertion portion of the terminal block 6 It is inserted from 6d, is fixed to the electric wire fixing part 6e inside the terminal block 6, and is electrically connected. The electric wire fixing part 6e is made of a conductive material, and is formed integrally with the soldering electrode 6b and the tab terminal 6f to constitute a terminal and is electrically connected. A plurality of terminals are provided on the terminal block 6. In one example, electric power is supplied from two terminals to the outdoor unit, and one of the other terminal and the two terminals is used for communication with the outdoor unit.

  The terminal block 6 has a thermal fuse 16 for preventing smoke and fire due to heat generation due to power loss when contact resistance due to poor contact between the wire fixing portion 6e and the core wire 15a is large, due to heat from the wire fixing portion 6e. It is provided in the vicinity of the electric wire fixing part 6e so that the interruption operation is easy.

  One internal wire 17a of the power cord 17 for supplying commercial power to the air conditioner is connected by a tab terminal 7a of the outdoor unit power supply relay 7 and a connector 17b, and the other internal wire 17c is connected to the terminal block 6 The tab terminal 6f is connected to the connector 17d. The terminals 6 have the same shape, and the number of tab terminals 6f is the same as the number of terminals, but only one internal wire 17c of the power cord 17 is connected. One of them is exposed to prevent miswiring.

  The curved lead portion 16 a of the thermal fuse 16 passes through the inside or outside of the terminal block 6 and is soldered to the terminal block substrate 4.

  FIG. 2 is a plan view of the terminal block 6 mounted on the terminal block substrate 4. The terminal block 6 shows one exposed tab terminal 6f to which a thermal fuse 16 and a commercial power supply are connected. The other tab terminal 6f is hidden. The terminal block substrate 4 has an outdoor unit power supply relay 7, and a tab terminal 7 a to which a commercial power source is connected is exposed. In addition, a fuse 8, a capacitor 9, a varistor 10, and a board direct attachment harness 12 mounted on the terminal block board 4 are visible.

  As shown in FIG. 3, the terminal block board 4 is formed with copper patterns (pattern 4a, pattern 4b, pattern 4c) for electrically connecting the components, and one of them is the terminal block 6 and There is a pattern 4 a for connecting the soldering portion of the outdoor unit power supply relay 7. The pattern 4 b connects the outdoor unit power supply relay 7 and the fuse 8. The pattern 4 c connects the soldering electrode 6 b and the thermal fuse 16.

  As shown in FIG. 3, on the board mounting surface side of the terminal block 6, it fits into the hole of the discard board 20 of the terminal block board 4 and the wire release button 6 g used when removing the inner / outer connection line 15 to the outdoor unit. Then, a board insertion protrusion 6h for determining the position of the terminal block 6 is provided.

  Displacement of the terminal block substrate 4 at a position where the inner box 3 does not come into contact with the terminal block 6 due to the stress applied to the terminal block 6 when the inner and outer connection wires 15 are inserted or removed, or the terminal block substrate 4 is warped or misaligned. Rib 3b (an example of a displacement limiting member) is provided (see FIG. 1).

  FIG. 5 shows an example of the board arrangement when the terminal block board 4 and the power board 5 are manufactured integrally. The terminal block substrate 4, the power supply substrate 5, and the discard substrate 20 are formed of a single substrate and can be divided by the substrate dividing unit 18 and the substrate dividing unit 19. As the division method, any division method such as perforation, V-cut, and slit may be used.

  The discard board 20 has a hole (not shown) for inserting the board insertion protrusion 6 h of the terminal block 6. In the present embodiment, the hole for inserting the board insertion protrusion 6h is provided in the discard board 20, but may be provided in the terminal block board 4. The wire release button 6g of the terminal block 6 is disposed above the component mounting surface side of the discarded board 20.

Next, the operation will be described mainly with reference to FIG.
First, the power supply path from the commercial power source to the indoor unit and the outdoor unit will be described. For power feeding to the outdoor unit, one internal electric wire 17a is connected to the tab terminal 7a from the power cord 17 via the connector 17b, the relay contact 7b (see FIG. 4) inside the outdoor unit power feeding relay 7, and the board. Power is supplied to the outdoor unit through the pattern 4a, the soldering electrode 6b, the wire fixing portion 6e, and the core wire 15a. Therefore, the power supply to the outdoor unit is controlled so as to supply power only when necessary by the outdoor unit power supply relay 7.

  The other internal electric wire 17c is fed to the outdoor unit via the connector 17d, the tab terminal 6f, the electric wire fixing part 6e, and the core wire 15a without going through the substrate pattern. Both feeding paths are the thick line circuits in FIG. 4, where a large current flows to drive the compressor of the outdoor unit (compressor of the refrigeration cycle), depending on the load conditions of the room, but at maximum capacity operation Current generally exceeds 5A. In this embodiment, a single-sided substrate is used, but it goes without saying that there is no problem even if a double-sided substrate is used.

  The power supply to the power supply board 5 of the indoor unit is branched from the middle of the power supply to the outdoor unit, and one internal electric wire 17a is connected from the tab terminal 7a to the fuse 8 via the pattern 4b, and the capacitor 9, the varistor 10 is connected to the power supply board 5 via the board direct attachment harness 12.

  The other internal electric wire 17c is connected to the thermal fuse 16 via the pattern 4c from the soldering electrode 6b, is connected to the capacitor 9 and the varistor 10, and is supplied with power to the power supply substrate 5 via the substrate direct attachment harness 12. Since only the power consumed by the indoor unit is supplied to this power supply path, generally a large current exceeding 5 A does not flow.

  Next, the structure around the terminal block 6 will be described. When performing installation work, removal work, relocation work, and repair service work for the air conditioner, there is work for inserting / removing the core wire 15a of the inner / outer connection wire 15 from the terminal block 6, but the stress generated at this time is applied to the terminal block 6. Join. The terminal block substrate 4 is not in contact with or fixed to any parts other than the terminal block 6, and the stress is not applied to the soldering portion 6c. Here, the electric wire releasing button 6g can be pushed from the opening 1a of the electrical component box 1 using a screwdriver or the like, whereby the electric wire fixing portion 6e is released and the core wire 15a of the inner / outer connection wire 15 is pulled out. It becomes possible.

  Further, the terminal block 6 is fixed by fitting the convex shape 3a of the inner box 3 and the concave shape 6a of the terminal block 6 and the screw 11, and the stress at the time of inserting / extracting the core wire 15a of the inner / outer connection wire 15 is determined. It can be transmitted from the outer shell 6 to the peripheral structure of the inner box 3. Here, as the method of fixing the peripheral structure of the terminal block 6 and the inner box 3, the uneven shape and the screw are used, but the same effect can be obtained even in the surface shape and other fitting forms.

  Further, since the inner box 3 which is a structure around the terminal block substrate 4 is provided with the rib 3b, the terminal block substrate 4 is displaced when an excessive stress is directly applied to the terminal block substrate 4. However, the displacement is limited by the rib 3b.

  Next, the thermal fuse 16 will be described. The thermal fuse 16 is disposed in the vicinity of the electric wire fixing portion 6e of the core wire 15a of the terminal block 6 and the inner and outer connecting wires 15, but if the core wire 15a and the electric wire fixing portion 6e are normally attached, contact of the connecting portion is possible. Since the resistance is small and the power loss generated there is also small, the heat generation is small and the thermal fuse 16 continues to conduct without reaching the breaking operation temperature.

  However, if the core wire 15a and the wire fixing portion 6e are not sufficiently in contact for reasons such as insufficient insertion of the core wire 15a, the contact resistance of the connecting portion is large, and the power loss generated there is also large, so heat generation is large. When the temperature fuse 16 reaches the shut-off operating temperature due to the heat, the temperature fuse 16 is shut off, and energization stops, so that heat generation stops. By this operation, it is possible to prevent an accident of smoke or fire due to heat generated when the internal / external connection line 15 is inserted into the terminal block 6.

  In the present embodiment, the thermal fuse 16 is connected to the terminal block substrate 4 by soldering, and can be assembled without requiring a lead wire mounting operation such as caulking.

  Further, since the thermal fuse 16 is at a distance of 10 mm or more from the soldering portion of the terminal block substrate 4, the heat from the molten solder at the time of flow soldering, the terminal block substrate 4 after the flow soldering, etc. The influence of the residual heat from the location where the temperature has increased can be mitigated. The thermal fuse 16 may be mounted inside the terminal block 6 or on the side opposite to the terminal block substrate 4 of the terminal block 6.

  Further, by curving the lead portion 16a of the thermal fuse 16 (see FIG. 1), there is a change in the dimensions of the terminal block 6 due to a change in the temperature of the terminal block 6 due to a change in room temperature or an operation of the air conditioner. The stress on the attaching portion 6c can be relaxed by the curved lead portion 16a.

  Next, components to be mounted on the terminal block substrate 4 will be described. The outdoor unit power supply relay 7 is provided in a path through which a large current for driving the compressor of the outdoor unit shown by a thick line portion in FIG. 4 flows. By mounting this outdoor unit power supply relay 7 on the terminal block board 4, a large current can be obtained. The path through which the current flows can be shortened and the number of connection points can be reduced.

  The filter circuit (not shown) is a circuit for suppressing transmission of noise components generated from the air conditioner and noise components conducted from the outside. By mounting a certain capacitor 9, the filter circuit can be disposed at a position closer to the power supply inlet of the commercial power supply, and radiation and conduction noise can be reduced. In this embodiment, only the capacitor 9 is mounted, but other filter circuit components such as a line filter may be mounted. Moreover, you may mount components other than filter circuits, such as a communication circuit of an indoor unit and an outdoor unit.

  Next, a manufacturing method related to the terminal block substrate 4 will be described. The terminal block board 4 and the power supply board 5 in FIG. 5 are manufactured integrally until the soldering process, and are divided by the board dividing section 18 and the board dividing section 19 before the mounting process in the electrical component box 1. Is stored.

  Further, by disposing the discarded substrate 20 on the soldering direction side of the wire release button 6g of the terminal block 6, it is possible to prevent direct contact of the solder and reduce the thermal influence from the solder. As a result, it is possible to prevent thermal deformation of the wire trip button 6g due to heat during soldering and adhesion of solder to the wire trip button 6g.

  Further, the board insertion protrusions 6h (see FIG. 3) provided at two locations on the terminal block 6 are inserted into holes (not shown) of the discard board 20, and the terminal block 6 is soldered.

  In addition, a connector 17 d is inserted into the tab terminal 6 f of the terminal block 6 during wiring work of the electrical component box 1.

  As described above, in the air conditioner according to the present embodiment, the terminal block 6 is mounted on the terminal block substrate 4, and the terminal block 6 is fixed to the inner box 3 that is a peripheral structure. 4 is configured not to be fixed to the inner box 3, so that stress at the time of insertion / extraction of the inner / outer connection line 15 is not applied to the soldering portion 6c of the terminal block 6, and the reliability of the soldering portion 6c can be increased. Fixing and strengthening means such as adhesion between the terminal block 6 and the terminal block substrate 4 is not required, and processing costs can be reduced.

  In addition, by mounting the terminal block 6 on the terminal block substrate 4, the number of connection points of the cable assembly can be reduced, the quality is improved by reducing connection defects, and the power consumption is reduced by reducing the power loss due to the contact resistance at the connection point Can do.

  In addition, the stress applied to the terminal block 6 is transmitted to the inner box 3 (an example of a predetermined portion of the air conditioner main body) that is a peripheral structure from the outer circumference of the terminal block 6 by inserting and removing the electric wire. 3 can be received, and it becomes difficult to damage the parts by fixing firmly, and the quality can be improved.

  In addition, by providing the rib 3b that restricts the displacement of the terminal block substrate 4 in the structure around the terminal block substrate 4, if excessive stress is directly applied to the terminal block substrate 4, the terminal block substrate 4 Is displaced, but the displacement is limited by the rib 3b.

  Further, by soldering the temperature fuse 16 disposed on the terminal block 6 to the terminal block substrate 4, complicated operations such as caulking to the lead wires are unnecessary, and the processing cost can be reduced.

  The temperature fuse 16 is a component that operates at a temperature and needs to be held at a temperature sufficiently lower than the cutoff operation temperature. The temperature fuse 16 is 10 mm or more above the board mounting surface of the terminal block board 4 (inside the terminal block 6). Or the terminal block 6 only needs to be mounted on the side opposite to the terminal block substrate 4), the temperature rise of the temperature fuse 16 due to heat during soldering can be reduced, and the reliability of the temperature fuse 16 is increased. be able to.

  Further, since the lead portion 16a of the thermal fuse 16 is curved, the stress on the soldering portion 6c caused by the dimensional change accompanying the temperature change of the terminal block 6 can be reduced, and the reliability of the soldering portion 6c is improved. Can be high.

  Since the outdoor unit power supply relay 7 and the fuse 8 are also mounted on the terminal block board 4 on which the terminal block 6 is mounted, the path through which a large current flows can be reduced, and the reliability can be improved by reducing the heat generated by reducing the resistance. The cost reduction effect at the time of service can be obtained by limiting the board replacement part to the terminal block board 4.

  Moreover, the noise reduction effect is acquired by mounting the filter circuit or a part thereof (for example, the capacitor 9) on the terminal block substrate 4 on which the terminal block 6 is mounted.

  The terminal block substrate 4 on which the terminal block 6 is mounted and the power supply substrate 5 on which other circuits are mounted are manufactured in one piece, soldered, and then divided and placed in the inner box 3 that is a peripheral structure. It is possible to reduce the number of work processes, tooling, and management work compared to manufacturing, and to manufacture at low cost. Furthermore, it becomes easy to use the board direct attachment harness 12 for the connection harness between the boards, and cost reduction and reliability improvement effects can be obtained.

  Since the terminal block 6 is mounted on the terminal block substrate 4 and the wire release button 6g of the terminal block 6 and the soldering electrode 6b are installed on the same surface, the terminal block substrate 4 is disposed, for example, obliquely downward. Even so (see FIG. 1), the wire release button 6g can be easily operated from the outside of the electrical component box 1, and the board storage space can be made smaller than when the terminal block board 4 is disposed. .

  At the time of soldering, there is a discarded substrate 20 below the wire release button 6g. By removing the discarded substrate 20 after soldering, it is possible to prevent thermal deformation and solder scattering due to solder adhesion to the wire release button 6g. Can improve quality.

  By providing two or more board insertion protrusions 6h to be inserted into the terminal block board 4 on the board mounting surface side of the terminal block 6, the positional deviation between the terminal block 6 and the terminal block board 4 can be reduced. The positional accuracy of the soldering portion 6c of the base 6 is increased, enabling highly reliable soldering, and the positional dimensional accuracy of the terminal base board 4 fixed to the terminal base 6 is increased, thereby reducing the board storage space. Is possible.

  By exposing one tab terminal 6f of the plurality of terminals of the terminal block 6 as a shape that fits with the connector 17d, incorrect wiring is prevented in connector wiring work such as during manufacturing or service. Can improve quality and reduce processing costs.

  In addition, by providing a terminal on the terminal block 6, it is possible to supply power to the outdoor unit without flowing a large current through the board pattern, and there is no heat generation at the board pattern or the soldering part, thereby increasing reliability. Can do.

1 electrical component box, 1a opening, 2 outer box, 3 inner box, 3a convex shape, 3b rib, 4 terminal block board, 4a pattern, 4b pattern, 4c pattern, 5 power supply board, 6 terminal block, 6a concave shape, 6b Soldering electrode, 6c Soldering part, 6d Terminal insertion part, 6e
Electric wire fixing part, 6f tab terminal, 6g electric wire release button, 6h protrusion for board insertion, 7
Outdoor unit power supply relay, 7a tab terminal, 8 fuse, 9 capacitor, 10 varistor, 11 screw, 12 board direct attachment harness, 13 harness, 14 connector, 15 internal / external connection line, 15a core wire, 16 temperature fuse, 16a lead part, 17 power cord, 17a internal wire, 17b connector, 17c internal wire, 17d connector, 18 substrate dividing part, 19 substrate dividing unit, 20 discarded substrate.

Claims (13)

An air conditioner body having an electrical box for storing boards and the like;
A terminal block fixed to the electrical component box by a plurality of fixing points, having a plurality of terminals on one side for inserting and extracting the core wire of the inner and outer connecting wires, and having a soldering electrode on the other side;
The terminal block is mounted, has a soldering portion at one end, the soldering portion is soldered to the soldering electrode, is fixed only to the terminal block, and does not contact other than the terminal block An air conditioner comprising the substrate.   The air conditioner according to claim 1, wherein a displacement limiting member is provided on the body around the substrate.   The air conditioner according to claim 1 or 2, wherein the terminal block has a thermal fuse, and the thermal fuse is soldered to the substrate.   The air conditioner according to claim 3, wherein the thermal fuse is mounted inside the terminal block or on the opposite side of the terminal block.   The air conditioner according to claim 3 or 4, wherein a lead portion of the thermal fuse is curved.   The air conditioner according to any one of claims 1 to 5, wherein the air conditioner has an outdoor unit, and an outdoor unit power supply relay that controls power supply to the outdoor unit is mounted on the substrate. .   The air conditioner according to any one of claims 1 to 6, wherein a fuse is mounted on the substrate.   The air conditioner according to any one of claims 1 to 7, wherein a filter circuit or a part of the filter circuit is mounted on the substrate.   9. The board on which the terminal block is mounted and a board on which another circuit is mounted are integrally manufactured, soldered, and then divided and fixed to predetermined positions of the main body, respectively. The air conditioner according to any one of the above.   The air conditioner has an outdoor unit, and the main body includes an opening through which an internal / external connection line to the outdoor unit connected to a terminal of the terminal block is passed, and the substrate mounting surface can be visually recognized from the opening. The air conditioner according to any one of claims 1 to 9, wherein the terminal block has an electric wire release button installed on substantially the same plane as the board mounting surface.   The air conditioner according to claim 10, wherein when soldering, there is a discarded board below the wire release button, and the discarded board is removed after soldering.   The air conditioner according to any one of claims 1 to 11, wherein two or more board insertion protrusions to be inserted into the board are provided on the board mounting surface side of the terminal block.   The air conditioner has an outdoor unit, and the plurality of terminals of the terminal block are each configured with the same shape, each of which has a soldering electrode mounted on the substrate, and an internal / external connection line to the outdoor unit. The air conditioner according to any one of claims 1 to 12, further comprising a wire fixing portion to be connected and a tab terminal, wherein one of the plurality of tab terminals is exposed.