JP2002232124A - Electric circuit board and air conditioner, and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily package electronic components on an electric circuit board. SOLUTION: In the electric circuit board 33 provided at the outdoor machine of an air conditioner, a projection 33c of conductor wiring 33a is removed by punching, using a puncher. As a result, the diameter of a first contact hole 34 of the conductor wiring 33a becomes the same as that of a second contact hole 35 of a resin material 33b. When the electronic components are to be packaged, a lead cannot be hooked to the projection 33c, thus the lead can be inserted and second insertion holes 34 and 35.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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 disposed in an outdoor unit.

[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. The control plate adjusts the temperature of the cold air or the warm air so that the room temperature becomes the set room temperature.

[0003] In such an air conditioner, an electric circuit board in which conductor wiring of a thin metal plate is integrally formed with resin is provided in, for example, an outdoor unit. An electric cable from the control board / commercial power supply and the indoor unit is connected to the electric circuit board, and the control board / commercial power supply and the indoor unit are electrically connected to each other.

[0004]

The electric circuit board has an insertion hole for mounting an electronic component. The insertion hole is formed to penetrate the resin and the conductor wiring, and is formed so as to expose the internal conductor wiring. In the step of integrally molding the resin with the conductor wiring, an insertion hole for inserting a component is formed in the conductor wiring, the insertion hole of the conductor wiring is fitted into the protrusion of the mold and fixed, and the resin is poured. At this time, the hole formed in the resin becomes larger than the hole of the conductor wiring, and the conductor wiring protrudes from the hole of the resin and is formed. When mounting an electronic component on a circuit board, the mounting work is difficult due to the conductor wiring protruding from the lead of the electronic component.

An object of the present invention is to facilitate mounting of electronic components on a circuit board.

[0006]

An electric circuit board according to claim 1 is provided in an air conditioner having an indoor unit and an outdoor unit,
An electric circuit board on which an electronic component can be mounted and which can electrically connect the electronic component to an external circuit is provided with a conductor wiring and a resin member. The conductor wiring is formed of a thin metal plate, and is used to solder an electronic component inserted through the first insertion hole from the mounting surface on which the electronic component is mounted, the first insertion hole for mounting the electronic component, and the mounting surface. For soldering. The resin member is integrally molded with the mounting surface and the solder surface of the conductor wiring, and has a second insertion hole at a position corresponding to the first insertion hole. The second insertion hole of the resin member is substantially the same as the first insertion hole on the mounting surface side of the conductor wiring, and is formed larger than the first insertion hole on the solder surface of the conductor wiring.

In such an electric circuit board, the first and second insertion holes of the conductor wiring and the resin member are formed substantially identically on the component mounting surface side, so that the leads of the electronic component are not caught. Inserted. According to the electric circuit board according to the first aspect, mounting of the electronic component becomes easy.

According to a second aspect of the present invention, in the electrical circuit board according to the first aspect, the conductor wiring has a bent portion at an edge of the first insertion hole. Also in this electric circuit board, the first insertion hole and the second insertion hole are formed to be substantially the same,
The same operations and effects as those of the electric circuit board according to the first embodiment are obtained. Further, the contact area between the bent portion of the conductor wiring and the lead of the electronic component is large, and poor contact between the conductor wiring and the electronic component hardly occurs.

An air conditioner according to a third aspect includes an indoor unit, a refrigerant pipe, an outdoor unit, a control plate, and an electric circuit board. The indoor unit causes indoor air to exchange heat with the refrigerant, and supplies cool air or warm air to the room. One end of the refrigerant pipe is connected to the indoor unit, and the refrigerant pipe can flow the refrigerant. The outdoor unit is connected to the other end of the refrigerant pipe, constitutes a refrigerant circuit together with the indoor unit and the refrigerant pipe, and supplies the compressed or decompressed refrigerant to the indoor unit via the refrigerant pipe. The control plate controls the refrigerant circuit. The electric circuit board is the electric circuit board according to claim 1 or 2, and is provided in, for example, an outdoor unit, and is electrically connected to a control board, an indoor unit, and a commercial power supply. According to the air conditioner according to the third aspect, the same effect as in the case of the electric circuit board according to the first or second aspect is exerted.

According to a fourth aspect of the present invention, there is provided a method of manufacturing an electric circuit board, wherein an electronic component is mounted on an air conditioner having an indoor unit and an outdoor unit, and an electronic circuit can be electrically connected to an external circuit. The method for manufacturing a circuit board includes the following steps. That is, a thin metal plate having a mounting surface for mounting an electronic component, a first insertion hole for mounting the electronic component, and a solder surface for soldering the electronic component inserted from the mounting surface side through the first insertion hole. Forming a conductor wiring; and molding a resin integrally with the mounting surface and the solder surface of the conductor wiring, and forming a second insertion hole larger than the first insertion hole in the resin at a position corresponding to the first insertion hole. And punching out the conductor wiring so that the first insertion hole has substantially the same size as the second insertion hole on the component mounting surface side.

According to a fourth aspect of the present invention, a plurality of conductor wirings are formed integrally at the same time; the plurality of integrally formed conductor wirings are fixed to a mold and then molded with a resin, and the second insertion hole is formed in the resin. Forming; separating the conductor wiring to complete the circuit, and simultaneously punching out the conductor wiring protruding from the component mounting surface side of the second insertion hole. In this case, since a plurality of conductor wirings are simultaneously formed and fixed to the mold, it is easy to fix the conductor wiring to the mold. Also, in order to separate the conductor wiring and simultaneously punch out the conductor wiring protruding from the component mounting surface of the second insertion hole,
The work does not increase by the punching work.

According to the circuit board manufacturing method of the fourth aspect, the same operation and effect as those of the circuit board of the first aspect can be obtained. In addition, since it is only necessary to punch out the portion of the second insertion hole protruding from the component mounting surface side at the same time as separating the conductor wiring, the number of steps does not increase due to the punching operation.

According to a fifth aspect of the present invention, there is provided a method of manufacturing an electric circuit board.
The conductor wiring protruding from the insertion hole is bent, and the first insertion hole is formed to have substantially the same size as the second insertion hole on the component mounting surface side. According to the method of manufacturing the electric circuit board according to the fifth aspect, the same operation and effect as in the case of the electric circuit board according to the second aspect are exhibited. In addition, after the resin is integrally molded with the conductor wiring as before, the protruding conductor wiring may be bent to form the first insertion hole with substantially the same size as the second insertion hole on the component mounting surface side.
The manufacture of the circuit board is easy.

[0014]

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. In the outdoor unit and the indoor unit, fans for supplying airflow to the outdoor heat exchanger 13 and the indoor heat exchanger 15 are arranged.

The compressor 11 sucks the 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 decompressor 14 is a device that decompresses and discharges the refrigerant, for example, an electric expansion valve is used. The indoor heat exchanger 15 is composed of a plurality of flat fins arranged in parallel and a refrigerant pipe penetrating therethrough. The fins are formed of a material having good heat conductivity such as aluminum, and a plurality of fins are arranged in parallel. As a result, the contact area between the fin and the air is increased, and the heat exchange efficiency between the air and the refrigerant is increased. The accumulator 16 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. Thus, the compressor 11 is driven.
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 indoor unit microcomputer 51, the I / F 52, the receiving unit 53, and the sensor 54 are provided in the indoor unit 50. The control unit 30 and the memory 3
1, the sensor 32 and the drive circuit 2 are mounted on a control plate 45 of the outdoor unit 40 as described later. An electric circuit board 33 is provided in the outdoor unit 40, and the control board 45, the commercial power supply 20, and the indoor unit 50 are electrically connected to each other by the electric circuit board 33.

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
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. I have. The indoor unit microcomputer 51 converts the electric signals from the receiving unit 53 and the sensor 54 into I
The signal is transmitted to the electric circuit board 33 via / F52. I / F52
Converts an electric signal from the indoor unit microcomputer 51 into an electric signal of a predetermined level and outputs the electric signal to the electric circuit board 33. Receiver 53
Receives signals from a remote controller or the like and
Output to 1. 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. In addition, the compressor 11 of the refrigerant circuit 1 is driven by converting the power input from the commercial power supply 20 to the drive circuit 2 via the electric circuit board 33 into a power signal of a predetermined frequency.

Hereinafter, the flow of the refrigerant in the refrigerant circuit 1 during cooling and 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.
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 16. 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. When a propeller fan (not shown) is driven, outside air is introduced from the rear surface of the outdoor unit 40, and the introduced outside air comes into contact with the outdoor heat exchanger 13 and is discharged from the front surface by the propeller fan. Indoor unit 50
, The indoor air sucked from above is brought into contact with the indoor heat exchanger 15 and is supplied into the room from the outlet at the lower front 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 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, the accumulator 16 and the outdoor heat exchanger 13 are connected by refrigerant pipes, respectively, and further connected to the indoor heat exchanger 15 by pipes 46 and 47. The control box 45 and the electric circuit board 33 are provided in the electric component box 44. The control plate 45 includes the control unit 30, the memory 31, the sensor 32, and the drive circuit 2, 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.

As shown in FIG. 6, the electric circuit board 33 is arranged along one end of the control board 45, and is electrically connected to the control unit 30 on the control board 45 and the input side of the drive circuit 2. I have. The electric circuit board 33 is connected to the commercial power supply 20 and the indoor unit 50 (I / F 52) via an electric cable 48. The electric circuit board 33 is a device in which conductor wiring of a thin metal plate is integrally formed with resin, and is formed in a substantially rectangular parallelepiped 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. 7, the surface of the circuit board 33 is a component mounting surface, on which electronic components constituting a noise removing circuit and an interface circuit are mounted. The circuit board 33
Are provided with a large number of insertion holes 34 and 35 (described later) for inserting leads of these electronic components. A connection hole 61 electrically connected to the drive circuit 2 and a harness 62 electrically connected to the control unit 30 are provided on the mounting surface. 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.

A method of manufacturing the electric circuit board 33 according to the present embodiment will be described with reference to FIGS. First, as shown in FIG. 9A, the conductor wiring 33a in which the first insertion hole 34 is formed is fixed to the mold 70. The mold 70 has a projection 70a, a projection 70b formed continuously at the tip of the projection 70a, and a recess 70c formed at the tip of the projection 70a. The diameter of the protrusion 70a is formed larger than the first insertion hole 34. The protrusion 70b
As shown in FIG. 9 (b), it is formed in a cylindrical shape, and its diameter matches the diameter of the first insertion hole 34 of the conductor wiring 33a. The recess 70c is formed such that its inner diameter matches the diameter of the projection 70b. This projection 70b
Then, the first insertion hole 34 of the conductor wiring 33a is fitted therein, and further, the recess 70c is fitted in the projection 70b, thereby fixing the conductor wiring 33a to the mold 70.

Next, a resin is poured between the upper and lower molds 70, and the resin is integrally molded with the conductor wiring 33a. However, the resin does not flow into the upper and lower protruding portions 70a, and this portion becomes a second insertion hole 35 described later.

When the resin molding is completed, as shown in FIG. 10, a resin member 33b is integrally formed so as to cover the conductor wiring 33a from above and below. A second insertion hole 35 is formed in the resin member 33b at a position corresponding to the first insertion hole 34 of the conductor wiring 33a. The second insertion hole 35
Are formed larger than the first insertion hole 34 and the second insertion hole 3
5, the protruding portion 3 of the conductor wiring 33a is provided on the component mounting surface side.
3c is formed.

Here, the lead is caught by the protruding portion 33c, and it is difficult to insert the lead of the electronic component into the first insertion hole 34. Therefore, as shown in FIG. 11, the protruding portion 33c is punched and removed by the upper and lower protrusions 71a of the punching machine 71. As shown in FIG. 12, the diameter of the first insertion hole 34 after the punching process is substantially the same as that of the second insertion hole 35 on the component mounting surface side, thereby facilitating the insertion of the lead.

[Other Embodiments] A method of manufacturing an electric circuit board 33 according to another embodiment will be described with reference to FIGS. In this embodiment, as shown in FIG. 13, in the circuit board 33 after resin molding, the protruding portion 33c is subjected to burring processing on the solder surface side. After the burring process, the protruding portion 33c is bent to form a bent portion 33d, and the first insertion hole 34 and the second insertion hole 35 have substantially the same diameter on the component mounting surface side. As a result, the lead of the electronic component can be easily inserted into the first insertion hole 34. Also,
Since the bent portion 33d is formed, the contact area between the lead and the bent portion 33d is large, and the electronic component and the conductor wiring 33 are formed.
It is unlikely to cause poor contact with a.

[0035]

According to the electric circuit board according to the first aspect, since the first insertion hole and the second insertion hole of the conductor wiring and the resin member are formed substantially the same, the lead of the electronic component is not caught. Insertion makes mounting of electronic components easy.

The electric circuit board according to the second aspect also has the same operation and effect as the electric circuit board according to the first aspect, since the first insertion hole and the second insertion hole are formed substantially identically. Further, the contact area between the bent portion of the conductor wiring and the lead of the electronic component is large, and poor contact between the conductor wiring and the electronic component hardly occurs.

According to the air conditioner of the third aspect, the same effects as those of the electric circuit board of the first or second aspect can be obtained.
According to the circuit board manufacturing method of the fourth aspect, the same operation and effect as in the case of the circuit board of the first aspect are achieved. In addition, since it is only necessary to punch out the portion of the second insertion hole protruding from the component mounting surface side at the same time as separating the conductor wiring, the number of steps does not increase due to the punching operation.

According to the method of manufacturing the electric circuit board according to the fifth aspect, the same operation and effect as those of the electric circuit board according to the second aspect can be obtained. Further, after the resin is integrally molded with the conductor wiring as before, the protruding conductor wiring is bent and the first insertion hole is formed in the second insertion hole.
Since the size of the insertion hole may be substantially the same as the size on the component mounting surface side, manufacture of the electric circuit board is easy.

[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.

FIG. 9 shows resin molding using a mold.

FIG. 10 is an electric circuit board after resin molding.

FIG. 11 shows a punching process.

FIG. 12 is an electric circuit board after punching.

FIG. 13 is a circuit board after burring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerant circuit 33 Electric circuit board 33a Resin member 33b Conductor wiring 33c Protruding part 33d Bending part 34 First insertion hole 35 Second insertion hole 40 Outdoor unit 45 Control plate 46, 47 Refrigerant piping 50 Indoor unit

Claims (5)

[Claims] An electronic circuit board provided in an air conditioner including an indoor unit and an outdoor unit, on which electronic components can be mounted, and which can electrically connect the electronic components to an external circuit. A metal thin plate conductor having a mounting surface for mounting the electronic component, a first insertion hole for mounting the electronic component, and a solder surface for soldering the electronic component inserted from the mounting surface side through the first insertion hole. Wiring, and a resin member integrally molded on the mounting surface and the solder surface of the conductor wiring and having a second insertion hole at a position corresponding to the first insertion hole, wherein the second insertion hole of the resin member includes: An electric circuit board, which is substantially the same as the first insertion hole on the mounting surface side of the conductor wiring, and is formed larger than the first insertion hole on the solder surface of the conductor wiring. 2. The circuit board according to claim 1, wherein said conductor wiring has a bent portion at an edge of said first insertion hole. 3. 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 an outdoor unit connected to the other end of the refrigerant 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 through the refrigerant pipe, and the refrigerant circuit. An air conditioner comprising: a control board; and the electric circuit board according to claim 1, which is electrically connected to the control board, an indoor unit, and a commercial power supply. 4. A method of manufacturing an electric circuit board provided in an air conditioner including an indoor unit and an outdoor unit, on which an electronic component can be mounted, and wherein the electronic component can be electrically connected to an external circuit. A thin metal plate having a mounting surface for mounting an electronic component, a first insertion hole for mounting the electronic component, and a solder surface for soldering an electronic component inserted from the mounting surface side through the first insertion hole. Forming a conductor wiring of, and integrally molding a resin on the mounting surface and the solder surface of the conductor wiring,
Forming a second insertion hole larger than the first insertion hole at a position corresponding to the first insertion hole; and determining the size of the second insertion hole on the mounting surface side of the conductor wiring of the second insertion hole. Punching the conductor wiring so as to be substantially the same. 5. A method of manufacturing an electric circuit board provided in an air conditioner including an indoor unit and an outdoor unit, on which an electronic component can be mounted, and wherein the electronic component can be electrically connected to an external circuit. A thin metal plate having a mounting surface for mounting an electronic component, a first insertion hole for mounting the electronic component, and a solder surface for soldering an electronic component inserted from the mounting surface side through the first insertion hole. Forming a conductor wiring of, and integrally molding a resin on the mounting surface and the solder surface of the conductor wiring,
Forming a second insertion hole larger than the first insertion hole at a position corresponding to the first insertion hole; and determining the size of the second insertion hole on the mounting surface side of the conductor wiring of the second insertion hole. Bending the conductor wiring to the solder surface side so as to be substantially the same.