Electrical component module and air conditioner

Abstract

An electric component module 10 includes a first board 21 having a first circuit 31 including a noise generation source, a second board 22 having a second circuit 32 including a microcomputer 35 that transmits and receives a communication signal CS to and from a control circuit 41 other than the first circuit 31, the second board 22 being separated from the first board 21, and an electric wire 51 that transmits and receives a simple signal SS between the first circuit 31 and the second circuit 32.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an electric component module and an air conditioner including the same.BACKGROUND ART

[0002] There is known an electric component module that includes a plurality of divided boards and transmits and receives a communication signal between the boards (see Patent Literature 1). The electric component module includes a microcomputer mounted on each of the plurality of boards and a signal line connecting the microcomputers, and transmits and receives a communication signal between the microcomputers via the signal line. The microcomputer performs demodulation processing on a communication signal including information of voltage or frequency on the basis of a communication protocol.CITATION LIST [PATENT LITERATURE]

[0003] PATENT LITERATURE 1: Japanese Laid-Open Patent Publication No. 2023-062775SUMMARY OF THE INVENTION [TECHNICAL PROBLEM]

[0004] In a case where the communication signal is transmitted and received between the boards, a microcomputer is required for each board. Therefore, the conventional electric component module including the plurality of boards has a large cost for the microcomputer.

[0005] An object of the present disclosure is to reduce a cost for a microcomputer in an electric component module including a plurality of divided boards.[SOLUTION TO PROBLEM]

[0006] (1) An electric component module of the present disclosure includes a first board having a first circuit including a noise generation source, a second board having a second circuit including a microcomputer that transmits and receives a communication signal to and from another circuit other than the first circuit, the second board being separated from the first board, and an electric wire that transmits and receives a simple signal between the first circuit and the second circuit.

[0007] In the electric component module of the present disclosure, the first circuit and the second circuit transmit and receive the simple signal that does not require decoding processing based on a communication protocol via an electric wire without using a microcomputer that performs the decoding processing based on the communication protocol. Therefore, the first circuit does not require a microcomputer. As a result, in the electric component module of the present disclosure, since the microcomputer of the first circuit can be omitted, a cost for the microcomputer can be suppressed.

[0008] (2) In the electric component module according to (1) of the present disclosure, the microcomputer preferably controls transmission and reception of the simple signal between the first circuit and the second circuit.

[0009] In the electric component module having the above configuration, since the microcomputer of the first circuit can be omitted, the cost for the microcomputer can be suppressed.

[0010] (3) In the electric component module according to (1) or (2) of the present disclosure, a length of the electric wire is preferably 40 mm or more and 250 mm or less.

[0011] In the electric component module having the above configuration, by setting the length of the electric wire to 40 mm or more, it is possible to suppress an influence of a noise generated in the first circuit on the transmission and reception of the communication signal of the second circuit, and by setting the length of the electric wire to 250 mm or less, it is possible to suppress deterioration in a communication quality of the simple signal and the communication signal due to an increase in the length of the electric wire. Accordingly, the electric component module of the present disclosure can suppress the deterioration in the communication quality of the communication signal and the simple signal.

[0012] (4) In the electric component module according to any of the aspects (1) to (3) of the present disclosure, the first board and the second board are preferably disposed on the same plane.

[0013] In the electric component module having the above configuration, the first board and the second board are disposed on the same plane, and thus, the length of the electric wire connecting the first circuit and the second circuit can be suppressed. As a result, the electric component module of the present disclosure can suppress the deterioration in the communication quality of the simple signal due to an increase in the length of the electric wire.

[0014] (5) In the electric component module according to any of the aspects (1) to (4) of the present disclosure, the first circuit preferably includes a switching power source circuit, and the second circuit preferably includes a high-frequency communication circuit.

[0015] The electric component module having the above configuration can suppress an influence of a noise generated from the switching power source circuit on the transmission and reception of the communication signal performed by the high-frequency communication circuit. As a result, the electric component module of the present disclosure can suppress the deterioration in the communication quality of the communication signal.

[0016] (6) The electric component module according to any of the aspects (1) to (5) of the present disclosure preferably further includes a plurality of the electric wires, in which the plurality of electric wires is configured as a harness.

[0017] The electric component module of the present disclosure can facilitate the connection between the first circuit and the second circuit by configuring the plurality of electric wires as a harness.

[0018] (7) In the electric component module according to (6) of the present disclosure, the harness preferably includes 3 or more and 22 or less of the electric wires.

[0019] In the electric component module of the present disclosure, in a case where the electric component module includes a plurality of signal lines, the connection between the first circuit and the second circuit can be facilitated by configuring the plurality of signal lines as a harness.

[0020] (8) In the electric component module according to any of the aspects (1) to (7) of the present disclosure, the first board preferably does not include the microcomputer.

[0021] In the electric component module of the present disclosure, a cost for the microcomputer can be suppressed by omitting the microcomputer of the first board.

[0022] (9) An air conditioner of the present disclosure includes a first device including the electric component module according to any of the aspects (1) to (8), and a second device including the another circuit, in which the first device and the second device are disposed apart from each other.

[0023] The air conditioner of the present disclosure includes the electric component module in the first device. In the electric component module, the first circuit and the second circuit transmit and receive the simple signal that does not require decoding processing based on a communication protocol via an electric wire without using a microcomputer. Therefore, the first circuit does not require a microcomputer for performing the decoding processing based on the communication protocol. As a result, in the air conditioner of the present disclosure, since the microcomputer of the first circuit in the first device can be omitted, the cost for the microcomputer can be suppressed.BRIEF DESCRIPTION OF DRAWINGS

[0024] [FIG. 1] FIG. 1 is a schematic diagram of an air conditioner according to an embodiment of the present disclosure. [FIG. 2] FIG. 2 is a schematic diagram of an electric component module according to an embodiment of the present disclosure. [FIG. 3] FIG. 3 is a schematic perspective view illustrating a connection state between a first board and a second board by a harness. [FIG. 4] FIG. 4 is a schematic perspective view illustrating a positional relationship between the first board and the second board in the electric component module. [FIG. 5] FIG. 5 is an explanatory diagram illustrating a relationship between a length of an electric wire and a communication quality of a communication signal. DETAILED DESCRIPTION

[0025] Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.[Overall configuration of air conditioner]

[0026] FIG. 1 is a schematic diagram of an air conditioner according to an embodiment of the present disclosure. FIG. 1 illustrates an air conditioner 100 as an embodiment of an air conditioner of the present disclosure. The air conditioner 100 is an air conditioner including an electric component module 10 as an embodiment of an electric component module of the present disclosure. The air conditioner 100 illustrated in FIG. 1 is a refrigeration cycle apparatus that adjusts a temperature of air in a target space to be air-conditioned to a predetermined target temperature. In the present embodiment, the air conditioner of the present disclosure is the refrigeration cycle apparatus. However, the air conditioner of the present disclosure is not limited to the refrigeration cycle apparatus, and may be, for example, a ventilator.

[0027] As illustrated in FIG. 1, the air conditioner 100 includes an indoor unit 101 installed in an indoor space S1 and an outdoor unit 102 installed in an outdoor space S2. The air conditioner 100 includes a connection pipe 103. The connection pipe 103 circulates a refrigerant between the indoor unit 101 and the outdoor unit 102. The air conditioner 100 includes a compressor 110, a four-way switching valve 111, an outdoor heat exchanger 112, an outdoor expansion valve 113, an indoor heat exchanger 121, and a refrigerant circuit 105 including refrigerant pipes connecting these components. The refrigerant circuit 105 includes a gas refrigerant pipe 105G and a liquid refrigerant pipe 105L.

[0028] The indoor unit 101 includes the indoor heat exchanger 121. The indoor heat exchanger 121 constitutes a part of the refrigerant circuit 105. The indoor heat exchanger 121 is of a cross-fin tube type or a microchannel type, and is used for heat exchange with indoor air. The indoor unit 101 further includes the electric component module 10 to be described later.

[0029] The indoor unit 101 includes an indoor fan 122. The indoor fan 122 is configured to take indoor air into the indoor unit 101, cause the indoor heat exchanger 121 to exchange heat between the taken air and the refrigerant, and then blow the air to the indoor space. The indoor fan 122 includes a motor 123 having a number of operating rotations adjustable in accordance with inverter control.

[0030] The outdoor unit 102 includes the compressor 110, the four-way switching valve 111, the outdoor heat exchanger 112, the outdoor expansion valve 113, and the like. The compressor 110, the four-way switching valve 111, the outdoor heat exchanger 112, and the outdoor expansion valve 113 constitute a part of the refrigerant circuit 105. The outdoor unit 102 further includes an outdoor unit control board 40 to be described later.

[0031] The compressor 110 sucks a low-pressure gas refrigerant and discharges a highpressure gas refrigerant. The compressor 110 includes a motor 114 having a number of operating rotations adjustable in accordance with inverter control.

[0032] The four-way switching valve 111 reverses a refrigerant flow in the refrigerant circuit 105, and switches and supplies the refrigerant discharged from the compressor 110 to either the outdoor heat exchanger 112 or the indoor heat exchanger 121. As a result, the air conditioner 100 can switch between a cooling operation and a heating operation.

[0033] The outdoor heat exchanger 112 is, for example, a cross fin tube type or microchannel type heat exchanger, and is used for exchanging heat with the refrigerant by using air as a heat source. The outdoor expansion valve 113 is constituted by a motor valve configured to adjust a refrigerant flow rate or the like.

[0034] The outdoor unit 102 includes the outdoor fan 115. The outdoor fan 115 includes a motor 116 having a number of operating rotations adjustable in accordance with inverter control. The outdoor fan 115 is configured to take air in the outdoor space S2 into the outdoor unit 102, cause heat exchange between the taken air and the refrigerant, and then blow the air out of the outdoor unit 102.(Electric component module)

[0035] FIG. 2 is a schematic diagram of an electric component module according to an embodiment of the present disclosure. As illustrated in FIG. 1 and FIG. 2, the indoor unit 101 includes the electric component module 10. The electric component module 10 includes an indoor unit control board 20 that controls an operation of each part of the indoor unit 101. The indoor unit control board 20 has a function of controlling the operation of the indoor unit 101 and a function of communicating with the outdoor unit 102.(Indoor unit control board)

[0036] As illustrated in FIG. 2, the indoor unit control board 20 includes a first board 21 and a second board 22. In other words, the indoor unit control board 20 is divided into a plurality of boards (the first board 21 and the second board 22). In the electric component module 10, the first board 21 and the second board 22 are separated from each other.

[0037] The first board 21 includes a first circuit 31, and the second board 22 includes a second circuit 32. In the electric component module 10 of the present disclosure, the first circuit 31 has a function of controlling electric power supplied to the indoor unit 101 and includes a switching power source circuit 33. The switching power source circuit 33 is connected to an external alternating-current power source 130 via the outdoor unit 102, a crossover wire 60, and the like. The switching power source circuit 33 converts alternating current into direct current, adjusts an output voltage, and supplies electric power to the first circuit 31 and the second circuit 32. In the electric component module 10, the switching power source circuit 33 serves as a noise generation source.

[0038] The indoor unit control board 20 may further include a circuit other than the first circuit 31 and the second circuit 32. The first board 21 may further include, for example, an inverter power source control circuit (not illustrated) that controls an operation of the motor 123 for the indoor fan 122. In the electric component module 10, the inverter power source control circuit serves as a noise generation source. Although the indoor unit control board 20 is divided into the plurality of boards (the first board 21 and the second board 22) in the electric component module 10 provided in the indoor unit 101 in the present disclosure, the electric component module of the present disclosure may be an electric component module provided in the outdoor unit 102, and in this case, the outdoor unit control board 40 is divided into a plurality of boards.

[0039] In the electric component module 10 of the present disclosure, the second circuit 32 includes a high-frequency communication circuit 34 that performs communication between the indoor unit 101 and the outdoor unit 102. The high-frequency communication circuit 34 enables transmission and reception of signals at a communication speed of Mbps order or higher. The high-frequency communication circuit 34 has a higher communication speed than a conventional communication circuit that transmits and receives signals at a communication speed of kbps order or less, which is conventionally general. In the following description, a signal transmitted and received by the high-frequency communication circuit 34 is referred to as a communication signal CS. The communication signal CS is a signal including information of a voltage, a frequency, and the like, and is a signal capable of performing noise removal (error correction) by performing demodulation processing on the basis of a communication protocol. The communication signal CS can transmit and receive information with two lines (a signal line and a reference line). The communication signal CS is a signal that requires modulation and demodulation processing by a program. Therefore, the transmission and reception of the communication signal CS require microcomputers on both a transmission side and a reception side.

[0040] As described above, in the electric component module 10 of the present disclosure, the first circuit 31 includes the switching power source circuit 33, and the second circuit 32 includes the high-frequency communication circuit 34. The second board 22 (second circuit 32) including the high-frequency communication circuit 34 is separated from the first board 21 (first circuit 31) including the switching power source circuit 33. Therefore, the electric component module 10 can suppress an influence of a noise emitted from the switching power source circuit 33 on the transmission and reception of the communication signal CS performed by the high-frequency communication circuit 34.

[0041] In the electric component module 10 of the present disclosure, the high-frequency communication circuit 34 includes a microcomputer 35. The microcomputer 35 performs demodulation processing based on the communication protocol in transmission and reception of the communication signal CS. The high-frequency communication circuit 34 transmits and receives the communication signal CS to and from the outdoor unit control board 40 of the outdoor unit 102 via the microcomputer 35.(Outdoor unit control board)

[0042] The outdoor unit control board 40 is a control board that controls an operation of each part of the outdoor unit 102. The outdoor unit control board 40 includes a control circuit (another circuit) 41. The control circuit 41 includes a high-frequency communication circuit 42 and an inverter power source control circuit 43. The high-frequency communication circuit 42 includes a microcomputer 45. The high-frequency communication circuit 42 transmits and receives the communication signal CS to and from the high-frequency communication circuit 34 of the second board 22 via the microcomputer 45 and the crossover wire 60. The inverter power source control circuit 43 controls the number of rotations of the motor 114 of the compressor 110 included in the outdoor unit 102 and the number of rotations of the motor 116 of the outdoor fan 115.

[0043] The indoor unit control board 20 and the outdoor unit control board 40 are electrically connected by the crossover wire 60. The high-frequency communication circuit 34 on the indoor unit control board 20 and the high-frequency communication circuit 42 on the outdoor unit control board 40 transmit and receive the communication signal CS via the microcomputers 35 and 45.

[0044] As illustrated in FIG. 2, in the electric component module 10 of the present disclosure, the first board 21 and the second board 22 are electrically connected by an electric wire 51. The electric wire 51 electrically connects the first circuit 31 and the second circuit 32. The first circuit 31 and the second circuit 32 transmit and receive signals via the electric wire 51. In the following description, a signal transmitted and received between the first circuit 31 and the second circuit 32 is referred to as a simple signal SS. The simple signal SS is an analog voltage signal including only voltage information, and is a signal that does not require the demodulation processing based on the communication protocol. Therefore, a microcomputer is unnecessary for transmission and reception of the simple signal SS. For transmission and reception of the simple signal SS, the electric wires 51 are required by the number of signals that need to be transmitted and received. The simple signal SS is characterized by being susceptible to noise because noise removal (error correction) by the demodulation processing is impossible.

[0045] As illustrated in FIG. 2, in the electric component module 10 of the present disclosure, the first board 21 and the second board 22 transmit and receive the simple signal SS by the electric wire 51. In the electric component module 10, the transmission and reception of the simple signal SS between the first board 21 and the second board 22 are controlled by the microcomputer 35. In other words, the microcomputer 35 controls transmission and reception of the simple signal SS between the first circuit 31 and the second circuit 32. Therefore, in the electric component module 10 of the present disclosure, the first board 21 does not include a microcomputer.

[0046] As described above, the electric component module 10 of the present disclosure includes the first board 21 having the first circuit 31 including the switching power source circuit 33 that is a noise generation source, the second board 22 having the second circuit 32 including the microcomputer 35 that transmits and receives the communication signal CS to and from the control circuit 41 other than the first circuit 31, the second board 22 being separated from the first board 21, and the electric wire 51 that transmits and receives the simple signal SS between the first circuit 31 and the second circuit 32.(Harness)

[0047] FIG. 3 is a schematic perspective view illustrating a connection state between the first board and the second board by a harness. As illustrated in FIG. 2 and FIG. 3, the electric component module 10 includes a plurality of electric wires 51. Then, the plurality of electric wires 51 is configured as a harness 50.

[0048] As illustrated in FIG. 3, the harness 50 includes the plurality of electric wires 51. The harness 50 is connected to the first circuit 31 and the second circuit 32 via a connector 52. The connector 52 includes a first connector 52a and a second connector 52b. One of the first connector 52a or the second connector 52b is a male connector, and the other is a female connector. The first connector 52a is provided at each of both ends in a length direction of the electric wire 51. The second connector 52b is provided in each of the first circuit 31 and the second circuit 32. In the harness 50, one first connector 52a is fitted into the second connector 52b of the first circuit 31, and the other first connector 52a is fitted into the second connector 52b of the second circuit 32. In this way, by using the harness 50, it is possible to more easily connect the first circuit 31 and the second circuit 32 by the plurality of electric wires 51.

[0049] In the electric component module 10 of the present disclosure, the number of electric wires 51 constituting the harness 50 is 3 or more and 22 or less.

[0050] In a case of transmitting and receiving the simple signal SS, at least one electric wire 51 for transmitting the simple signal SS, at least one electric wire 51 for receiving the simple signal SS, and at least one electric wire 51 for supplying power are required. Therefore, in the electric component module 10 of the present disclosure, the number of electric wires 51 constituting the harness 50 is three or more.

[0051] The electric component module 10 provided in the indoor unit 101 (see FIG. 1) is preferably configured to be compact. Therefore, the connectors 52 provided on the indoor unit control board 20 (the first board 21 and the second board 22) are selected to have 22 or less terminals, assuming a maximum number of the electric wires 51 necessary for transmission and reception of the simple signal SS.

[0052] As described above, in the electric component module 10 of the present disclosure, the number of electric wires 51 constituting the harness 50 is 3 or more and 22 or less. The electric component module 10 of the present disclosure can facilitate the connection between the first circuit 31 and the second circuit 32 by using the harness 50 having such a configuration. Note that the connector 52 is divided into a standard product and a non-standard product (custom-made product) depending on the number of terminals. The electric component module 10 of the present disclosure can suppress an increase in cost due to the adoption of the harness 50 by adopting the connector 52 of the standard product.(Positional relationship between first board and second board)

[0053] FIG. 4 is a schematic perspective view illustrating the positional relationship between the first board and the second board in the electric component module. As illustrated in FIG. 4, in the electric component module 10 of the present embodiment, the first board 21 and the second board 22 are supported by a plate-shaped member 15. The plate-shaped member 15 is a member having a planar portion. The material of the plate-shaped member 15 is not limited, and metal, resin, or the like can be used. The first board 21 and the second board 22 are fixed to a support surface 16 of the plate-shaped member 15. The support surface 16 is a flat portion of the plate-shaped member 15. In other words, in the electric component module 10, the first board 21 and the second board 22 are disposed on the same plane (on the support surface 16). In the electric component module 10 according to the present embodiment, the first board 21 and the second board 22 are supported by one plate-shaped member 15, but in the electric component module 10 of the present disclosure, the first board 21 and the second board 22 may be supported by two different plate-shaped members 15. In this case, the support surfaces 16 of the two plate-shaped members 15 are disposed on the same plane.

[0054] For example, in a case where the arrangement of the first board 21 and the second board 22 is offset in a direction X (direction perpendicular to the support surface 16) illustrated in FIG. 4, a length L of the electric wire 51 connecting the first board 21 and the second board 22 is larger than in a case where there is no offset (in other words, the boards are disposed on the same plane). In the electric component module 10, an increase in the length L of the electric wire 51 can also be a factor of deteriorating a communication quality of the simple signal SS. Therefore, in the electric component module 10 of the present disclosure, the first board 21 and the second board 22 are preferably disposed on the same plane. In this case, the length L of the electric wire 51 can be minimized, and thus, it is possible to suppress deterioration in the communication quality of the simple signal SS.(Relationship between length of electric wire and communication quality)

[0055] FIG. 5 is an explanatory diagram illustrating a relationship between the length of the electric wire and the communication quality of the communication signal. FIG. 5 illustrates a relationship between the length L of the electric wire 51 and an index (PhyRate) representing the communication quality of the communication signal CS. The unit of the index (PhyRate) is [Mbps]. As a result of diligent research, the inventor of the present application has found that it is preferable to secure a PhyRate of 55 [Mbps] or more under measurement conditions in consideration of disturbance such as wiring impedance in order to ensure the communication quality of the communication signal CS between the indoor unit 101 and the outdoor unit 102 (see FIG. 1). Therefore, the electric component module 10 of the present disclosure has a configuration capable of securing a PhyRate of 55 [Mbps] or more for the communication signal CS between the second circuit 32 and the control circuit (another circuit) 41.

[0056] As illustrated in FIG. 5, in the electric component module 10, when the length L of the electric wire 51 is short, the distance between the first board 21 and the second board 22 also becomes short, and thus, the communication quality of the communication signal CS by the high-frequency communication circuit 34 deteriorates due to the influence of the noise emitted from the switching power source circuit 33. In order to suppress the influence of the noise emitted from switching power source circuit 33 in the electric component module 10, it is preferable to increase the distance between first board 21 and second board 22. As illustrated in FIG. 5, when the length L of the electric wire 51 is 40 mm or more, the electric component module 10 can secure a PhyRate of 55 [Mbps] or more for the communication signal CS.

[0057] The electric wire 51 functions as a receiver (antenna) that receives noise. Therefore, as illustrated in FIG. 5, in the electric component module 10, as the length L of the electric wire 51 increases, noise entering the second circuit 32 via the electric wire 51 increases, and thus, the communication quality of the communication signal CS by the high-frequency communication circuit 34 deteriorates. When the noise entering from the electric wire 51 increases, the quality of the communication performed by the simple signal SS itself via the electric wire 51 also deteriorates. Therefore, in the electric component module 10, it is preferable to reduce a separation distance between the first board 21 and the second board 22 to suppress the noise entering from the electric wire 51. As illustrated in FIG. 5, when the length L of the electric wire 51 is 250 mm or less, the electric component module 10 can secure a PhyRate of 55 [Mbps] or more for the communication signal CS.

[0058] As described above, in the electric component module 10 of the present disclosure, the length L of the electric wire 51 is 40 mm or more and 250 mm or less. By setting the length L of the electric wire 51 to 40 mm or more, the electric component module 10 can secure a separation distance of at least 40 mm or more between the switching power source circuit 33, which is a noise source of the first board 21, and the high-frequency communication circuit 34. As a result, it is possible to suppress the influence of the noise generated in the first circuit 31 on the transmission and reception of the communication signal CS of the second circuit 32 (high-frequency communication circuit 34). By setting the length L of the electric wire 51 to 250 mm or less, the electric component module 10 can suppress deterioration in the communication quality of the simple signal SS and the communication signal CS due to an increase in the length of the electric wire 51. The electric component module 10 having such a configuration can suppress deterioration in communication quality of each of the communication signal CS and the simple signal SS.(Air conditioner)

[0059] As illustrated in FIG. 1, the air conditioner 100 of the present disclosure includes the indoor unit (first device) 101 having the electric component module 10, and the outdoor unit (second device) 102 having the control circuit (another circuit) 41. In the air conditioner 100 of the present disclosure, the indoor unit 101 and the outdoor unit 102 are separated from each other.

[0060] In the air conditioner 100 having such a configuration, the high-frequency communication circuits 34 and 42 connected by the crossover wire 60 perform high-speed communication at a communication speed of the order of Mbps between the indoor unit 101 and the outdoor unit 102. Thus, the air conditioner 100 can transmit and receive a larger capacity signal (exchange more information) between the indoor unit 101 and the outdoor unit 102. Therefore, the air conditioner 100 can more accurately control the temperature of the indoor space S1 and ensure higher air conditioning quality.[Functional effects of embodiment]

[0061] (1) The electric component module 10 according to the above embodiment includes the first board 21 having the first circuit 31 including a noise generation source (the switching power source circuit 33), the second board 22 having the second circuit 32 including the microcomputer 35 that transmits and receives the communication signal CS to and from the control circuit 41 other than the first circuit 31, the second board 22 being separated from the first board 21, and the electric wire 51 that transmits and receives the simple signal SS between the first circuit 31 and the second circuit 32.

[0062] In the electric component module 10 according to the present embodiment, the first circuit 31 and the second circuit 32 transmit and receive the simple signal SS that does not require decoding processing based on the communication protocol via the electric wire 51 without using the microcomputer that performs the decoding processing based on the communication protocol. Therefore, the first circuit 31 does not require a microcomputer. As a result, in the electric component module 10 according to the present embodiment, since the microcomputer of the first circuit 31 can be omitted, the cost for the microcomputer can be suppressed.

[0063] (2) In the electric component module 10 according to the above embodiment, the microcomputer 35 controls transmission and reception of the simple signal SS between the first circuit 31 and the second circuit 32.

[0064] In the electric component module 10 having such a configuration, since the microcomputer of the first circuit 31 can be omitted, the cost for the microcomputer can be suppressed.

[0065] (3) In the electric component module 10 according to the above embodiment, the length L of the electric wire 51 is 40 mm or more and 250 mm or less.

[0066] In the electric component module 10 having such a configuration, by setting the length L of the electric wire 51 to 40 mm or more, it is possible to suppress an influence of a noise generated in the first circuit 31 on the transmission and reception of the communication signal CS of the second circuit 32, and by setting the length L of the electric wire 51 to 250 mm or less, it is possible to suppress deterioration in a communication quality of the simple signal SS and the communication signal CS due to an increase in the length of the electric wire 51. Accordingly, the electric component module 10 according to the above embodiment can suppress the deterioration in the communication quality of the communication signal CS and the simple signal SS.

[0067] (4) In the electric component module 10 according to the above embodiment, the first board 21 and the second board 22 are disposed on the same plane.

[0068] In the electric component module 10 having such a configuration, the first board 21 and the second board 22 are disposed on the same plane, and thus, the length L of the electric wire 51 connecting the first circuit 31 and the second circuit 32 can be suppressed. As a result, the electric component module 10 according to the above embodiment can suppress the deterioration in the communication quality of the simple signal SS due to an increase in the length of the electric wire 51.

[0069] (5) In the electric component module 10 according to the above embodiment, the first circuit 31 includes the switching power source circuit 33, and the second circuit 32 includes the high-frequency communication circuit 34.

[0070] The electric component module 10 having such a configuration can suppress an influence of a noise generated from the switching power source circuit 33 on the transmission and reception of the communication signal CS performed by the high-frequency communication circuit 34. As a result, the electric component module 10 according to the above embodiment can suppress the deterioration in the communication quality of the communication signal CS.

[0071] (6) The electric component module 10 according to the above embodiment includes the plurality of electric wires 51, and the plurality of electric wires 51 is configured as the harness 50.

[0072] The electric component module 10 having such a configuration can facilitate the connection between the first circuit 31 and the second circuit 32 by configuring the plurality of electric wires 51 as the harness 50.

[0073] (7) In the electric component module 10 according to the above embodiment, the harness 50 includes 3 or more and 22 or less electric wires 51.

[0074] In a case where the electric component module 10 having such a configuration includes the plurality of electric wires 51, the connection between the first circuit 31 and the second circuit 32 can be facilitated by configuring the plurality of electric wires 51 as the harness 50.

[0075] (8) In the electric component module 10 according to the above embodiment, the first board 21 does not include a microcomputer.

[0076] In the electric component module 10 having such a configuration, since the microcomputer of the first board 21 is omitted, the cost for the microcomputer can be suppressed.

[0077] (9) The air conditioner 100 according to the above embodiment includes the indoor unit (first device) 101 having the electric component module 10, and the outdoor unit (second device) 102 having the control circuit (another circuit) 41, in which the indoor unit 101 and the outdoor unit 102 are disposed apart from each other.

[0078] The air conditioner 100 according to the present embodiment includes the electric component module 10 in the indoor unit 101. In the electric component module 10, the first circuit 31 and the second circuit 32 transmit and receive the simple signal SS that does not require decoding processing based on the communication protocol via the electric wire 51 without using a microcomputer. Therefore, the first circuit 31 does not require a microcomputer for performing the decoding processing based on the communication protocol. As a result, in the air conditioner 100 of the present disclosure, since the microcomputer of the first circuit 31 in the indoor unit 101 can be omitted, the cost for the microcomputer can be suppressed.

[0079] While various embodiments have been described herein above, it is to be appreciated that various changes in form and detail may be made without departing from the spirit and scope presently or hereafter claimed.REFERENCE SIGNS LIST

[0080] 10electric component module 21first board 22second board 31first circuit 32second circuit 33switching power source circuit 34high-frequency communication circuit 35microcomputer 41control circuit (another circuit) 50harness 51electric wire 100air conditioner 101indoor unit (first device) 102outdoor unit (second device) CScommunication signal SSsimple signal Llength (of electric wire)

Claims

1. An electric component module (10) comprising: a first board (21) having a first circuit (31) including a noise generation source; a second board (22) having a second circuit (32) including a microcomputer (35) that transmits and receives a communication signal (CS) to and from another circuit (41) other than the first circuit (31), the second board (22) being separated from the first board (21); and an electric wire (51) that transmits and receives a simple signal (SS) between the first circuit (31) and the second circuit (32).

2. The electric component module (10) according to claim 1, wherein the microcomputer (35) controls transmission and reception of the simple signal (SS) between the first circuit (31) and the second circuit (32).

3. The electric component module (10) according to claim 1 or 2, wherein a length (L) of the electric wire (51) is 40 mm or more and 250 mm or less.

4. The electric component module (10) according to claim 1 or 2, wherein the first board (21) and the second board (22) are disposed on a same plane.

5. The electric component module (10) according to claim 1 or 2, wherein the first circuit (31) includes a switching power source circuit (33), and the second circuit (32) includes a high-frequency communication circuit (34).

6. The electric component module (10) according to claim 1 or 2, further comprising a plurality of the electric wires (51), wherein the plurality of electric wires (51) is configured as a harness (50).

7. The electric component module (10) according to claim 6, wherein the harness (50) includes 3 or more and 22 or less of the electric wires (51).

8. The electric component module (10) according to claim 1 or 2, wherein the first board (21) does not include the microcomputer (35).

9. An air conditioner (100) comprising: a first device (101) including the electric component module (10) according to claim 1 or 2; and a second device (102) including the another circuit (41), wherein the first device (101) and the second device (102) are disposed apart from each other.

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