JP2002228197A - Circuit boards and air conditioners - Google Patents

Abstract

(57) [Problem] To provide an air conditioner provided with an electric circuit board arranged in an outdoor unit to facilitate mounting of electronic components on the electric circuit board. SOLUTION: In an air conditioner including an indoor unit and an outdoor unit, a control board provided in the outdoor unit and for controlling operation of the air conditioner is electrically connected to the indoor unit and a commercial power supply. Holes 6 for mounting electronic components on the surface
4 and a convex portion 63 and a concave portion 63 for fixing an electronic component.
a and a symbol 65 representing an electronic component were formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric circuit board, and more particularly to an electric circuit board used for an air conditioner. The present invention also provides
The present invention relates to an air conditioner, particularly to an air conditioner having an electric circuit board.

[0002]

2. Description of the Related Art In a separate type air conditioner including an indoor unit and an outdoor unit, when a signal (operation mode, set room temperature, etc.) from a remote controller is received by an indoor unit, the signal is transmitted to an electric cable. Is transmitted to the control panel of the outdoor unit via the. The control plate controls the refrigerant circuit based on the received signal (operation mode, set room temperature, etc.), and cool air or warm air is supplied from the indoor unit to the room. Further, the temperature of the cool air or warm air is adjusted so that the room temperature becomes the set room temperature.

[0003] In order to electrically connect the control board of the outdoor unit to the indoor unit and the commercial power supply, an electric circuit board electrically connected to a conductive pattern on the control board is used at one end of the control board. This electric circuit board is composed of conductor wiring and insulating resin. More specifically, the electric circuit board is formed by forming conductor wiring of a thin metal plate and integrally molding an insulating resin so as to cover the conductor wiring of the thin metal plate. The circuit board has a harness that is electrically connected to a pattern on the control board on a side of the control board, and a signal and power supply line from the indoor unit and a commercial power supply on the opposite side. Are provided with terminal portions connected to the power supply wiring. Further, a hole for mounting an electronic component is formed on the surface on the control board side, and the electronic component is connected to the conductor wiring inside the electric circuit board through the hole.

[0004]

In a printed circuit board, it is necessary to automatically insert a lead of an electronic component into a through hole on the board and fix it by mechanical insertion, and to solder the lead by solder flow on the back surface of the board. it can. On the other hand, noise removal components and interface components mounted on the circuit board have various shapes, and it is difficult to arrange these electronic components on the circuit board by mechanical insertion. In addition, in the electric circuit board, the conductor wiring is integrally formed of an insulating resin, and the insulation distance is short, so that the distance between the electronic components can be shortened. In addition, the surface of the electric circuit board is formed with irregularities, and the claw holding the electronic component is hindered by the irregularities when performing mechanical insertion. Under such circumstances, the mounting of the electronic components on the electric circuit board is performed manually by an operator.

[0005] However, since a large number of electronic components are mounted on the circuit board for noise removal or the like, it is difficult for an operator to quickly specify a hole in which the electronic component is to be mounted. Therefore, it takes a lot of man-hours to mount electronic components, or
Failure may occur due to mounting errors.

An object of the present invention is to facilitate mounting electronic components on an electric circuit board in an air conditioner having an electric circuit board arranged in an outdoor unit.

[0007]

According to a first aspect of the present invention, there is provided an air conditioner having an indoor unit and an outdoor unit, wherein the electric circuit board is provided, for example, in the outdoor unit, and a control plate for controlling the operation of the air conditioner is installed in the indoor unit. And a circuit board for electrically connecting to a commercial power supply, comprising conductor wiring and a resin member. The conductor wiring is formed of a thin metal plate, and is electrically connected to the control board, the indoor unit, and the commercial power supply. The resin member is formed integrally with the conductor wiring, and has holes and unevenness for mounting electronic components on the surface. That is, in the electric circuit board, a resin member made of an insulating material is integrally formed with conductor wiring of a thin metal plate. The electric circuit board is disposed at one end of the control board of the outdoor unit, and is electrically connected to the indoor unit and a commercial power supply. The electronic components include, for example, an electronic component for removing noise included in a signal from an indoor unit or a commercial power supply, and an electronic component that configures an interface circuit that converts an electric signal from the indoor unit into an electric signal that can be supplied to a microcomputer. And are included.

In the electric circuit board according to the first aspect, the operation mode (heating or cooling) and the set room temperature (for example,
(20 ° C.) is received by the indoor unit, an electric signal representing these instructions is transmitted to the electric circuit board of the outdoor unit via a signal line. Then, an electric signal is transmitted to the control board via the conductor wiring of the electric circuit board. Further, electric power from a commercial power supply is supplied to the inverter of the control board via the conductor wiring of the electric circuit board. Electronic components on the circuit board (for noise removal, interface, etc.)
When mounting the electronic components, the leads of the electronic components are inserted into the holes by arranging the electronic components using the irregularities on the surface of the circuit board as a mark. After mounting all the electronic components, the leads of the electronic components are soldered to the conductor wiring inside the circuit board by a solder flow.

For example, when a light emitting diode having a light emitting section and two leads extending in parallel in the same direction from one surface of the light emitting section is mounted on the circuit board, a convex portion surrounding the light emitting section is formed on the circuit board. Then, two concave portions for fixing the two leads in parallel are formed in the convex portion. Further, two holes for inserting the tips of the two leads are formed outside the recess. When the light emitting diode is arranged with such unevenness as a mark, the two leads are always fixed to the concave portions, and the tips of the leads are directed to the target holes. Due to such irregularities,
The leads can be inserted into the correct holes and the light emitting diode can be mounted.

According to the electric circuit board of the first aspect, the electronic component is mounted on the electric circuit board using the unevenness formed on the surface of the electric circuit board as a mark, so that the leads of the electronic component can be easily inserted into the correct holes. it can. As a result, mounting of the electronic component on the circuit board becomes easy.

According to a second aspect of the present invention, in the electrical circuit board according to the first aspect, the resin member is formed with irregularities that match the outer shape of the electronic component to be mounted. For example, a convex portion is provided on the surface of the electric circuit board so as to conform to the outer shape of the light emitting portion of the light emitting diode, and a concave portion in which two leads are fixed in parallel is formed. In the electric circuit board according to the second aspect, the electronic component is arranged so as to match the uneven portion, and the lead is inserted into the hole. At this time, even if an attempt is made to mount an incorrect electronic component, the electronic component does not match the unevenness and cannot be mounted. According to the electric circuit board according to the second aspect, since the electronic component cannot be mounted unless the electronic component is matched with the unevenness, the probability of mounting error of the electronic component is further reduced.

According to a third aspect of the present invention, in the electric circuit board according to the first aspect, the resin member is formed by a mold having a convex portion corresponding to the outer shape of the electronic component. According to the electric circuit board according to claim 3, production of the electric circuit board is easy.

According to a fourth aspect of the present invention, there is provided the electric circuit board according to the first to third aspects.
In the electric circuit board according to any one of the above, a symbol representing the electronic component is further formed on the resin member near the electronic component mounting position on the surface. For example, on a circuit board on which the above-described light emitting diode is mounted, a sign “LED” is displayed on the side of the unevenness. When there are a plurality of light emitting diodes having the same shape, a symbol that can identify each other, such as “LED A” and “LED B”, is displayed. In the electric circuit board according to the fourth aspect, for example, when two LEDs are mounted, first, an LED mounted by “LED A” and “LED B”
The position of the ED is identified, and the LEDs are arranged using the unevenness as a mark. According to the electric circuit board according to the fourth aspect, since the mounting position of the electronic component can be confirmed by not only the unevenness but also the symbol expressing the electronic component, the lead of the electronic component can be easily inserted into the accurate hole. Can be inserted.

According to a fifth aspect of the present invention, there is provided the electric circuit board according to the first to fifth aspects.
In the electric circuit board according to any one of the above, the control board is a printed circuit board. In the electric circuit board according to claim 5, the electric circuit board for noise removal
Electronic components for the interface are mounted on a circuit board instead of a printed circuit board. According to the electric circuit board according to the fifth aspect, the conductor wiring of the electric circuit board is a thin metal plate and is thicker than the conductor pattern of the printed circuit board. However, the current capacity can be secured in a narrow space.

According to the air conditioner provided with the electric circuit board according to any one of the first to fifth aspects, the same effect as that of the electric circuit board according to the first to fifth aspects can be obtained.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Overall Configuration] FIG. 1 is a block diagram showing a schematic configuration of an air conditioner according to one embodiment of the present invention. The air conditioner of the present invention includes a refrigerant circuit 1, a drive circuit 2, and a control circuit 3, as shown in FIG. The control circuit 3 controls the refrigerant circuit 1 and the drive circuit 2, drives the refrigerant circuit 1 by the output from the drive circuit 2, controls the flow of the refrigerant in the refrigerant circuit 1, and adjusts the room temperature.

FIG. 2 shows a specific configuration of the refrigerant circuit 1.
The refrigerant circuit 1 is connected to a compressor 11, a four-way switching valve 12 connected to the discharge side of the compressor 11, an outdoor heat exchanger 13 connected to the four-way switching valve 12, and an outdoor heat exchanger 13. A pressure reducer (electric expansion valve) 14, an indoor heat exchanger 15 connected to the pressure reducer 14, and an accumulator 16. Compressor 11, four-way switching valve 12, outdoor heat exchanger 1
3, the decompressor 14 and the accumulator 16 are provided in the outdoor unit, and the indoor heat exchanger 15 is provided in the indoor unit. A fan (not shown) for supplying an airflow to the outdoor heat exchanger 13 and the indoor heat exchanger 15 is disposed in each of the outdoor unit and the indoor unit.

The compressor 11 sucks refrigerant from the suction side,
This is a device that compresses the refrigerant and discharges the compressed refrigerant from the discharge side. The four-way switching valve 12 has four pipe connection parts (A,
B, C, D), and pipes connected to each other are conducted between A and B and between C and D (solid line) or between A and D and between B and C (dotted line), thereby forming a flow path. Is a device for changing The outdoor heat exchanger 13 is formed by folding a refrigerant pipe to have an L shape in plan view. The reason why the shape is an L shape in a plan view is to increase the contact area with the air flow. The pressure reducer 14 is a device that decompresses and discharges the refrigerant, and uses, for example, an electric expansion valve. The indoor heat exchanger 15 is composed of a plurality of flat fins arranged in parallel and a refrigerant pipe penetrating therethrough. In order to increase the heat exchange efficiency between air and the refrigerant, the plurality of fins are made of a material having good heat conductivity such as aluminum, and are arranged in parallel with each other to increase the contact area with air. The accumulator 16
This is a device that is connected to the suction side of the compressor 11 and that prevents liquid refrigerant from being mixed into the compressor 11.

FIG. 3 shows the configuration of the drive circuit 2 for driving the refrigerant circuit 1. The drive circuit 2 mainly includes a rectifier circuit 21 and an inverter 22. The rectifier circuit 21 includes a diode bridge, a large-capacity aluminum electrolytic capacitor, and the like, and has an input side connected to the commercial power supply 20. The inverter 22 is a bridge circuit including a power element such as an FET or an IGBT, and is driven by a drive signal from the control circuit 3. In this drive circuit, the commercial power supply 2
When power from 0 is input to the rectifier circuit 21, it is rectified by the diode bridge of the rectifier circuit 21 and smoothed by the aluminum electrolytic capacitor. The rectified and smoothed power is input to the inverter 22. Inverter 2
When the two power elements are driven by the drive signal from the control circuit 3, the output from the rectifier circuit 21 is converted into a power signal of a predetermined frequency and output to the motor 11a of the compressor 11, and the compressor 11 is driven. You. Further, by adjusting the frequency of the drive signal from the control circuit 3, the rotation frequency of the compressor 11 is adjusted, and the cooling or heating capacity is adjusted.

FIG. 4 shows the configuration of the control circuit 3. The control circuit 3 mainly includes a control unit 30, a memory 31, a sensor 3,
2, a circuit board 33, an indoor unit microcomputer 51, an I / F 52, a receiving unit 53, and a sensor 54.

The control unit 30 includes a refrigerant circuit 1 and a drive circuit 2
This is a configuration for controlling. The control unit 30 includes a microprocessor that executes a program of a predetermined control procedure to control the refrigerant circuit 1 and the drive circuit 2, and a drive circuit that generates a drive signal to be output to the drive circuit 2. I have. The memory 31 stores a set room temperature, a set humidity, an operation mode, a control procedure program, and the like. The memory 31 may be provided separately from the control unit 30 as shown in FIG. 4 or may be built in the microprocessor.
The sensors 32 include a temperature sensor that detects an outside air temperature and a temperature sensor that detects a refrigerant pipe temperature. Circuit board 33
Is a drive circuit 2, a control unit 30, a commercial power supply 20, and an I / F
52. The electric circuit board 33 includes a noise removal circuit that removes an electric signal from the I / F 52 and noise included in the commercial power supply 20, and an interface circuit that converts the electric signal from the I / F 52 into an electric signal that can be received by the control unit 30. Contains. The indoor unit microcomputer 51 includes the receiving unit 5
3 and the electric signal from the sensor 54 are transmitted to the electric circuit board 33 via the I / F 52. The I / F 52 converts an electric signal from the indoor unit microcomputer 52 into an electric signal of a predetermined level and outputs the electric signal to the electric circuit board 33. The receiving unit 53 receives a signal from a remote controller or the like and outputs the signal to the indoor unit microcomputer 51. The sensors 54 include a temperature sensor for detecting room temperature and a humidity sensor for detecting indoor humidity.

[Air-conditioning operation] In such an air conditioner,
When the receiving unit 53 receives the operation mode, the set room temperature, and the like, the instruction signal is output from the microcomputer 51 to the I / F 52, converted into an electric signal of a predetermined level, and output to the electric circuit board 33. This electric signal (operation mode, set room temperature)
The noise is removed by the noise removal circuit of the circuit board 33, and the interface circuit converts the noise into an electric signal that can be received by the microcomputer. Then, these commands (operation mode, set room temperature) are stored in a predetermined area of the memory 31 by the control unit 30. The control unit 30 controls the refrigerant circuit 1 based on the command (operation mode, set room temperature) and a program stored in the memory 31 and outputs a drive signal to the drive circuit 2. Specifically, the control unit 30 switches the four-way switching valve 12 and adjusts the valve of the pressure reducer 14 to a predetermined opening. When a drive signal is output to the drive circuit 2,
The drive circuit 2 converts electric power input from the commercial power supply 20 via the electric circuit board 33 into a power signal of a predetermined frequency and outputs the power signal to the compressor 11.

Hereinafter, the flow of the refrigerant in the refrigerant circuit 1 during cooling and during heating will be described with reference to FIG. During the cooling operation, the four-way switching valve 12 is set to the position indicated by the solid line,
4 is reduced to a predetermined opening, and the compressor 11 is started. The high-pressure refrigerant discharged from the compressor 11 is condensed in the outdoor heat exchanger 13 and then decompressed by the decompressor 14. After the decompressed low-pressure refrigerant evaporates in the indoor heat exchanger 15, the four-way switching valve 1
2. Return to the compressor 11 via the accumulator 16. When the refrigerant evaporates in the indoor heat exchanger 15, the indoor air deprives the refrigerant of heat, and the deprived indoor air acts as cool air.

During the heating operation, the four-way switching valve 12 is set to the position indicated by the dotted line, and the pressure reducer 14 is throttled to a predetermined opening degree.
Start The high-pressure refrigerant discharged from the compressor 11 is condensed in the indoor heat exchanger 15 and then decompressed by the decompressor 14. The decompressed low-pressure refrigerant evaporates in the outdoor heat exchanger 13 and returns to the discharge side of the compressor 11 via the four-way switching valve 12 and the accumulator 13. When the refrigerant is condensed in the indoor heat exchanger 15, heat is released to the room air, and the room air that has absorbed this heat acts as warm air.

[Electric Circuit Board] Hereinafter, the specific configuration and arrangement of the outdoor unit 40 and the indoor unit 50 of the air conditioner according to the present embodiment will be described, and then the electric circuit board 33 will be described.

FIG. 5 is a perspective view of the outdoor unit 40 and the indoor unit 50 of the air conditioner according to the present embodiment. FIG. 6 is a perspective view of the inside of the outdoor unit 40. The outdoor unit 40 is installed outdoors with the rear surface facing the building, and the outdoor heat exchanger 13 removes outside air sucked from the rear surface by a propeller fan (not shown).
And discharged from the front. The indoor unit 50 brings the indoor air sucked from above into contact with the indoor heat exchanger 15,
The air is supplied into the room from the outlet by a cross flow fan (not shown).

The indoor unit 50 includes the indoor heat exchanger 1 described above.
5. The indoor unit microcomputer 51, the I / F 52, the receiving unit 53, and the sensor 54 are provided inside the main body casing 55. As shown in FIG. 5, the outdoor unit 40 includes a main body casing 41 and a closing valve cover 42. Inside, the outdoor heat exchanger 13 and the machine room 43 are installed as shown in FIG.
And an electrical component box 44.

The machine room 43 is provided with a compressor 11, a four-way switching valve 12, a pressure reducer 14, and an accumulator 16. These compressor 11, four-way switching valve 12, pressure reducer 1
As shown in FIG. 2, the accumulator 4 and the outdoor heat exchanger 13 are connected by refrigerant pipes, and are further connected to the indoor heat exchanger 15 by pipes 46 and 47 to form the refrigerant circuit 1. I have.

The control box 45 and the electric circuit board 3
3 are provided. On the control plate 45, the control unit 30,
The memory 31, the sensor 32, and the drive circuit 2 are mounted. The output of the control plate 45 is the compressor 11, the four-way switching valve 1
2. Connected to the pressure reducer 14. As described above, the output of the drive circuit 2 is connected to the compressor 11, and the control unit 30 is connected to the four-way switching valve 12 and the pressure reducer 14. The control plate 45 is a device in which electronic components such as a microcomputer, a memory, and a power element are mounted on a printed board on which a conductive pattern is drawn on an epoxy resin or a phenol resin.

The electric circuit board 33 is, as shown in FIG.
5, and is electrically connected to the control unit 30 on the control board 45 and the input side of the drive circuit 2 as shown in FIG. Further, it is connected to the commercial power supply 20 and the indoor unit 50 (I / F 52) via the electric cable 48. The electric circuit board 33 is a device in which a three-dimensional pattern of conductor wiring of a thin metal plate is formed, and the conductor wiring is solidified with an insulating resin. The electric circuit board 33 has a substantially rectangular parallelepiped shape as shown in FIG.

FIG. 7 is an enlarged view of a surface of the electric circuit board 33 facing the control plate 45 (hereinafter referred to as a front surface), and FIG. 7 is an enlarged view of a surface of the electric circuit board 33 not facing the control plate 45 (hereinafter referred to as a back surface). FIG.

As shown in FIG. 8, the electric cable 4 from the commercial power source 20 and the indoor unit 50
A terminal block 66 including a terminal portion 66a to which the terminal 8 is connected is formed. Each terminal portion 66a is a terminal plate 66 made of a conductive metal connected to the conductor wiring inside the circuit board 33.
b, a mounting hole 66c provided in the terminal plate 66b, and a bolt 66d screwed into the mounting hole 66c. These terminal plate 66b, mounting hole 66b, and bolt 66d are
It is electrically connected to the electronic components on the back.

As shown in FIG. 7, the surface of the circuit board 33 facing the control plate 45 is a component mounting surface on which a large number of electronic components are mounted. Here, a state before component mounting is shown for convenience of explanation. The mounting surface is provided with a connection hole 61 that is electrically connected to the drive circuit 2 and a harness 62 that is electrically connected to the control unit 30. The connection hole 61 and the harness 62 are respectively connected to the conductor pattern on the control board 45, and the connection hole 61 and the drive circuit 2 are electrically connected, and the harness 62 and the control unit 30 are electrically connected respectively.

Electronic components to be mounted include noise removal components, interface components, safety components, harnesses, alarm components, and the like. The components for noise removal include, for example, capacitors C1 to C4, inductor L1, arrester S
A1, varistors V2 and V3, and the like. The interface component is, for example, the integrated circuit HIC5. The parts for safety measures are FU2 and FU3. In addition, harness H1
H2, H3, FG1, FG2, FG3, FG10, light emitting diode LEDA, etc. are mounted. In the vicinity of the position where each electronic component is mounted, a symbol representing the electronic component is displayed. Further, a protrusion is provided so as to match the outer shape of the electronic component.

For example, in the case of a light emitting diode, "LED
A convex portion 63 having an inner wall conforming to the outer shape of the light emitting portion of the light emitting diode is formed adjacent to the position indicated by "A". Further, the convex portion 63 has two leads of the light emitting diode. A concave portion 63a is formed in which is fixed. Two holes 64 for inserting leads are provided at the end of the concave portion 63a, and the two leads are inserted respectively to mount a light emitting diode. At the end of the hole 64, a diode circuit symbol 65 is further displayed so that the hole 64 into which the lead of the light emitting diode LEDA is to be inserted can be identified.

In such a circuit board 33, when mounting an electronic component, the electronic component is mounted on the circuit board 33 by using the unevenness formed on the component mounting surface as a mark. It can be easily inserted. Also, it is not possible to mount electronic components unless they match the irregularities,
In addition, since the symbol representing the electronic component is also displayed, the probability of mounting error of the electronic component is reduced. In addition, since the circuit symbol of the electronic component is also displayed, it is possible to prevent the polarity of the electronic component from being erroneously mounted.

[0037]

According to the electric circuit board according to the first aspect, since the electronic component is mounted on the electric circuit board using the unevenness formed on the surface of the electric circuit board as a mark, the leads of the electronic component can be easily inserted into the correct holes. be able to. As a result, mounting of the electronic component on the circuit board becomes easy.

According to the electric circuit board of the second aspect, since the electronic component cannot be mounted unless the electronic component is matched with the unevenness, the probability of mounting error of the electronic component is further reduced. According to the electric circuit board according to the third aspect, the production of the electric circuit board is further facilitated.

In the electric circuit board according to the fourth aspect, since the mounting position of the electronic component can be confirmed not only by the unevenness but also by the symbol, the lead of the electronic component can be easily inserted into the accurate hole. Can be.

According to the electric circuit board of claim 5, further,
The conductor wiring of the circuit board is a thin metal plate and is thicker than the conductor pattern of the printed circuit board, so by arranging electronic components for noise removal and interface on the circuit board,
The current capacity can be secured in a narrow space.

According to the air conditioners of the sixth to tenth aspects, the same effects as those of the electric circuit board of the first to fifth aspects can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram of an air conditioner according to an embodiment of the present invention.

FIG. 2 shows the refrigerant circuit.

FIG. 3 is a drive circuit thereof.

FIG. 4 is a control circuit thereof.

FIG. 5 is a perspective view of an air conditioner according to an embodiment of the present invention.

FIG. 6 is the inside of the outdoor unit.

FIG. 7 is a component mounting surface of the circuit board.

FIG. 8 is a terminal connection surface of the circuit board.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerant circuit 20 Commercial power supply 33 Electric circuit board 40 Outdoor unit 45 Control board (printed circuit board) 50 Indoor unit 63 Convex part 63a Concave part 65 Symbol expressing electronic components 66 Terminal block 66a Terminal part 66b Terminal plate 66c Mounting hole 66d Bolt

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shinji Ehira No. 1000 Oya, Okamoto-cho, Kusatsu-shi, Shiga 2nd Daikin Industries, Ltd. Shiga Works F-term (reference) 5E336 AA01 AA12 BB01 BB05 BB15 BC26 BC28 CC01 CC53 CC57 CC58 CC59 EE01 GG21 5E338 AA01 BB61 DD11 DD22 DD40 EE32 EE43

Claims (10)

[Claims] 1. An electric circuit board provided in an air conditioner having an indoor unit and an outdoor unit, for electrically connecting a control plate for controlling operation of the air conditioner to the indoor unit and a commercial power supply, A control plate, a conductor wiring of a thin metal plate electrically connected to an indoor unit and a commercial power supply, and a resin member integrally formed with the conductor wiring and having holes and irregularities formed on its surface for mounting electronic components. Electric circuit board. 2. The circuit board according to claim 1, wherein the resin member is formed with irregularities that match the outer shape of the electronic component to be mounted. 3. The circuit board according to claim 1, wherein said resin member is formed by a mold having a concave and convex portion corresponding to an outer shape of an electronic component. 4. The circuit board according to claim 1, wherein the resin member further has a symbol representing an electronic component formed near a mounting position of the electronic component on the surface. 5. The electric circuit board according to claim 1, wherein said control board is a printed circuit board. 6. An indoor unit for exchanging heat between indoor air and a refrigerant to supply cool air or warm air to a room, a refrigerant pipe having one end connected to the indoor unit and capable of flowing a refrigerant, and the refrigerant pipe. An outdoor unit connected to the other end of the indoor unit and configured to form a refrigerant circuit together with the indoor unit and the refrigerant pipe, and to supply compressed or decompressed refrigerant to the indoor unit via the refrigerant pipe; An air conditioner comprising: a circuit board; 7. An indoor unit for exchanging heat between indoor air and a refrigerant to supply cool air or warm air to a room, a refrigerant pipe having one end connected to the indoor unit and capable of flowing a refrigerant, and the refrigerant pipe. An outdoor unit connected to the other end of the indoor unit and configured to form a refrigerant circuit together with the indoor unit and the refrigerant pipe, and to supply the compressed or decompressed refrigerant to the indoor unit via the refrigerant pipe; An air conditioner comprising: a circuit board; 8. An indoor unit for causing indoor air to exchange heat with a refrigerant to supply cool air or warm air to a room, a refrigerant pipe having one end connected to the indoor unit and capable of flowing a refrigerant, and the refrigerant pipe. And an outdoor unit connected to the other end of the indoor unit and configured to form a refrigerant circuit together with the indoor unit and the refrigerant pipe, and to supply the compressed or depressurized refrigerant to the indoor unit via the refrigerant pipe. An air conditioner comprising: a circuit board; 9. An indoor unit for exchanging heat between indoor air and a refrigerant to supply cool air or warm air to a room, a refrigerant pipe having one end connected to the indoor unit and capable of flowing a refrigerant, and a refrigerant pipe. And an outdoor unit connected to the other end of the indoor unit and configured to form a refrigerant circuit together with the indoor unit and the refrigerant pipe, and to supply the compressed or decompressed refrigerant to the indoor unit via the refrigerant pipe. An air conditioner comprising: a circuit board; 10. An indoor unit for exchanging heat between indoor air and a refrigerant to supply cool air or warm air to a room, a refrigerant pipe having one end connected to the indoor unit and capable of flowing a refrigerant, and the refrigerant pipe. And an outdoor unit connected to the other end of the indoor unit and configured to form a refrigerant circuit together with the indoor unit and the refrigerant pipe, and to supply the compressed or decompressed refrigerant to the indoor unit via the refrigerant pipe. An air conditioner comprising: a circuit board;