Control circuit board of air conditioner indoor unit, air conditioner electric control box and air conditioner

Abstract

The utility model provides a control circuit board of an air conditioner indoor unit and an air conditioner, relates to the technical field of air conditioners, and aims to solve the problem of large board body area of a display circuit board. The control circuit board of the air conditioner indoor unit is used for being installed on an air conditioner electric control box and comprises a circuit board body, a display assembly is arranged on the circuit board body and comprises a display lamp located on the front face of the circuit board body and a display driving circuit electrically connected with the display lamp, and the display driving circuit is located on the back face of the circuit board body. And the position is opposite to the display lamp. The area of a circuit board required by the display assembly can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioner technical field, specifically, relate to a control circuit board of air conditioner indoor unit, air conditioner electric control box and air conditioner. BACKGROUND

[0002] In the wall-mounted air conditioner indoor unit, the air conditioner electric control box is usually arranged at the end of the internal space of the wall-mounted air conditioner indoor unit, for example, left end or right end. However, by adopting such arrangement, the overall length of the wall-mounted air conditioner indoor unit is increased, which on one hand leads to the increase of the material of the base, middle frame and panel of the air conditioner, and the cost of the air conditioner is increased, and on the other hand, the length of the air conditioner is large, and the air conditioner is not easy to install in the indoor space.

[0003] Generally, the display area is arranged on the panel of the wall-mounted air conditioner indoor unit, and the display assembly is arranged behind the display area to display the set temperature, the running mode of the air conditioner and other information. The display assembly is installed on the inner surface of the panel and faces the display area. Generally, the display assembly is arranged in a separate display box. Generally, the display assembly is arranged on the front surface of the display circuit board body, and the display driving circuit is also arranged on the front surface of the display circuit board body, which causes the large area of the display circuit board body, and further causes the large area of the display box, and the air conditioner electric control box is arranged at the front of the air conditioner. SUMMARY

[0004] The first aspect of the utility model aims to provide a control circuit board of air conditioner indoor unit to solve the technical problem of large area of the display circuit board body.

[0005] The control circuit board of air conditioner indoor unit provided by the first aspect of the utility model is arranged in the air conditioner electric control box, and the control circuit board comprises a circuit board body, a display assembly is arranged on the circuit board body, the display assembly comprises a display lamp arranged on the front surface of the circuit board body and a display driving circuit electrically connected with the display lamp, the display driving circuit is arranged on the back surface of the circuit board body and opposite to the display lamp.

[0006] The control circuit board of air conditioner indoor unit provided by the utility model has the following beneficial effects:

[0007] By arranging the display assembly on the circuit board body, the display lamp is controlled to display information, without the need to separately arrange a box body for the display control circuit, and without the need to separately wire the display assembly and the control circuit board of the air conditioner indoor unit, thereby shortening the assembly time. Moreover, the display driving circuit is arranged on the back of the circuit board body and opposite the display lamp, which can significantly reduce the area of the circuit board body occupied by the display driving circuit and the display lamp, thereby being beneficial to reducing the overall area of the control circuit board of the air conditioner indoor unit. Moreover, the display driving circuit is arranged opposite the display lamp, which can shorten the wiring distance between the display lamp and the display control circuit, reduce the conductor length between the display lamp and the display driving circuit, and be beneficial to reducing the cost of the control circuit board of the air conditioner indoor unit.

[0008] In an optional technical solution, the display lamp is an LED lamp.

[0009] The LED lamp is adopted as the display lamp, which can emit light with large light flux in a small space, so as to ensure that the pattern displayed through the lampshade is more clear on the front panel of the air conditioner.

[0010] In an optional technical solution, the display assembly is located at the lower part of the circuit board body.

[0011] Since the air conditioner control box is applied to the air conditioner indoor unit and is located in front of the fan motor, the motor gland and the refrigerant pipe of the indoor heat exchanger, the lower space of the air conditioner control box is relatively cramped. Such an arrangement means that the display driving circuit is also located at the lower part of the air conditioner control box, and the electronic elements of the display driving circuit are relatively thin. Arranging the display assembly at the lower part of the circuit board body is beneficial to fully utilizing the lower space in the air conditioner control box. In addition, such an arrangement can also reduce the position of the display assembly relative to the air conditioner control box, and further reduce the position of the display assembly relative to the air conditioner indoor unit. When the user needs to observe the information of the display assembly, the user does not need to tilt the head at a large angle, thereby improving the user experience.

[0012] In an optional technical solution, the back of the circuit board body is provided with a strong current rectification filter circuit, a communication circuit and a BUCK circuit, the strong current rectification filter circuit, the communication circuit and the BUCK circuit are all located at the upper part of the circuit board body, and the strong current rectification filter circuit, the communication circuit and the BUCK circuit all include the power element.

[0013] The above circuits all include high-power elements, and the control circuit board of the air conditioner indoor unit is arranged at the front of the air conditioner indoor unit, the air conditioner electric control box is provided with a wind wheel motor, a motor gland and a refrigerant pipe of an indoor heat exchanger at the rear lower part of the air conditioner electric control box, and the space below the control circuit board of the air conditioner indoor unit is relatively cramped, so arranging the above circuits on the upper part of the circuit board body is beneficial to fully utilizing the space inside the air conditioner electric control box and reducing the overall volume of the air conditioner electric control box. Moreover, the upper part of the air conditioner electric control box is not directly opposite to the refrigerant pipe, so the temperature on the outer side of the upper part of the rear wall of the air conditioner electric control box is higher than that of the lower part of the rear wall. The power elements in the above circuits have strong thermal effects and can generate more heat, so that the temperature of the upper area of the space inside the air conditioner electric control box is relatively high. Even so, since the temperature on the outer side of the upper part of the rear wall is relatively high, there is no large temperature difference between the inside and outside of the upper part of the rear wall, which is beneficial to controlling the risk of condensation on the rear wall of the air conditioner electric control box.

[0014] In addition, arranging the circuits including power elements on the upper part of the circuit board body is beneficial to distancing the power elements from the display driving circuit, which can improve the heat dissipation of the display driving circuit and avoid the problem that the air after absorbing heat from the elements of the display driving circuit is blocked by the power elements and difficult to flow upward smoothly, the temperature of the air around the display driving elements rises, and the risk of burning out of the display driving elements increases.

[0015] In an optional technical solution, the circuit board body is further provided with a bus voltage sampling circuit, and the bus voltage sampling circuit is located at the middle part of the circuit board body in the height direction.

[0016] Arranging the bus voltage sampling circuit at the middle part of the front of the circuit board body in the height direction and close to the strong-electricity rectification filter circuit can make the circuits related to strong electricity more concentrated, facilitate controlling the range of the circuits on the circuit board body, and reduce the risk of interference of weak-electricity related elements by strong electricity.

[0017] In an optional technical solution, the circuit board body is further provided with a buzzer circuit, an infrared receiving circuit and a WiFi control circuit, and the buzzer circuit, the infrared receiving circuit and the WiFi control circuit are all located at the lower part of the circuit board body.

[0018] The lower part of the control circuit board of the air conditioner indoor unit is located before the motor of the wind wheel, the motor gland and the refrigerant pipe of the heat exchanger, so the thickness of the lower part of the internal space of the air conditioner electric control box is small, the circuit is arranged on the lower part of the circuit board body, the element height of the circuit is low, and the space of the lower part of the control circuit board of the air conditioner indoor unit can be fully utilized. Moreover, the element height of the circuit is low, when the air absorbs heat from the elements of the circuit, the upward movement of the hot air is not obviously hindered. After the elements in the lower part of the circuit board body are cooled, the hot air can flow upward in time, so that the temperature of the elements in the lower part of the circuit board body is appropriate, and the reliability of the control circuit board of the air conditioner indoor unit is improved.

[0019] In an optional technical solution, the circuit board body is provided with a fan driving circuit, and the fan driving circuit comprises three intelligent power modules arranged in a triangular shape.

[0020] The three intelligent power modules are arranged in a triangular shape, so that the distance between the three intelligent power modules is increased, so that the three intelligent power modules can better exchange heat with air, so as to reduce the operating temperature of the intelligent power module and improve the reliability of the control circuit board of the air conditioner indoor unit.

[0021] In an optional technical solution, the display assembly comprises a lampshade configured to be attached to the front panel of the air conditioner indoor unit, and the lampshade is provided with light transmission holes, and each display lamp is arranged corresponding to the light transmission holes.

[0022] The light transmission holes of the lampshade are arranged corresponding to the display lamps, so that the brightness of each light transmission hole can be controlled by each display lamp, and the lampshade and the circuit board body are attached to the front panel, so that the lampshade can be attached to the inner side of the front panel, so that the pattern of the light transmission holes can be clearly displayed on the front panel.

[0023] The second aspect of the utility model aims at providing an air conditioner electric control box to solve the technical problem of large board body area of the display circuit board.

[0024] The air conditioner electric control box provided by the second aspect of the utility model comprises a box body and the control circuit board of the air conditioner indoor unit in any of the above aspects, the control circuit board is installed in the inside of the box body, the box body comprises a box seat and a box cover, the control circuit board is installed in the box seat, the box seat is provided with a first notch part and a second notch part, the first notch part is used for accommodating the lampshade to pass through, and the lampshade is configured to protrude from the box seat; the second notch part is connected with the edge of the box seat facing the box cover through the first notch part, the box cover is provided with an extension part, and the extension part shields the second notch part.

[0025] The air conditioner electric control box provided by the utility model has the following beneficial effects:

[0026] By setting the first notch part to accommodate the lampshade to pass through, the lampshade can protrude from the box seat, so in the control circuit board of the air conditioner indoor unit, the lampshade can be prior to the front wall of the air conditioner control box to fit the front panel of the air conditioner indoor unit, so as to more clearly display information, on the other hand, the part thickness of the display assembly can coincide with the front wall thickness of the box seat, thereby reducing the overall thickness of the air conditioner control box. The second notch part is arranged to communicate the first notch part and the front wall side edge of the box seat, which can realize the installation of the circuit board body in the box body, and the light emitting part is inserted into the first notch part at the same time, thereby improving the assembly efficiency.

[0027] The third aspect of the utility model aims at providing an air conditioner to solve the technical problem of large board body area of the display circuit board.

[0028] The air conditioner provided by the third aspect of the utility model comprises an air conditioner indoor unit, the air conditioner indoor unit comprises a base, a wind wheel motor, a motor gland and the air conditioner control box of any one of the above, the wind wheel motor is installed on the base, and the motor gland cover is arranged on the upper side of the wind wheel motor and is fixedly connected with the base.

[0029] By arranging the above-mentioned air conditioner control box in the air conditioner, the air conditioner has all the advantages of the above-mentioned air conditioner control box, which will not be described one by one here. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the background art, the drawings needed to be used in the following embodiment or background art description will be briefly introduced, and obviously, the drawings in the following description are only embodiments of the utility model, and other drawings can be obtained by the provided drawings without creative labor for those skilled in the art.

[0031] Figure 1 The structural schematic view of the control circuit board of the air conditioner indoor unit provided by the first embodiment of the utility model is omitted lampshade and fixing part;

[0032] Figure 2 The structural schematic view of the control circuit board of the air conditioner indoor unit provided by the first embodiment of the utility model is omitted lampshade and fixing part from another direction;

[0033] Figure 3 The front view of the control circuit board of the air conditioner indoor unit provided by the first embodiment of the utility model;

[0034] Figure 4 The rear view of the control circuit board of the air conditioner indoor unit provided by the first embodiment of the utility model;

[0035] Figure 5 The utility model provides a three -dimensional disassembly diagram of air -conditioning electric control box for embodiment two of the utility model;

[0036] Figure 6 The utility model provides a sectional view of air -conditioning electric control box for embodiment two of the utility model;

[0037] Figure 7 The utility model provides a structure schematic drawing of omitting box cover of air -conditioning electric control box installation in wall -hanging type air -conditioning indoor unit for embodiment two of the utility model.

[0038] Mark explanation:

[0039] 100 - box body;110 - box seat;111 - first gap part;112 - second gap part;120 - box cover;

[0040] 200 - circuit board body;210 - display component;211 - display lamp;212 - lampshade;213 - display drive circuit;214 - fixing piece;215 - buckle;221 - power element;222 - pin element;231 - high -voltage rectifier filter circuit;232 - communication circuit;233 - BUCK circuit;234 - fan drive circuit;235 - buzzer circuit;236 - infrared receiving circuit;237 - WiFi control circuit;238 - bus voltage sampling circuit;239 - micro control unit circuit;241 - wind wheel motor connection terminal;242 - temperature sensor terminal;243 - up and down sweep wind terminal;244 - air -guide drive motor terminal;

[0041] 310 - base;320 - motor gland;330 - indoor heat exchanger;331 - refrigerant pipe. Specific implementation

[0042] In order to make the above -mentioned purpose, feature and advantage of the utility model can be more obvious easy to understand, the specific embodiment of the utility model is explained in detail with accompanying drawings below. It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.

[0043] If not otherwise specified, the directions in the present application are defined as follows: front refers to the side of the wall-mounted air conditioner indoor unit facing the main indoor space, and the back refers to the side of the wall-mounted air conditioner indoor unit facing the wall on which it is hung. The bottom refers to the side of the wall-mounted air conditioner indoor unit facing the ground. The top refers to the side of the wall-mounted air conditioner indoor unit facing the ceiling. The left and right can be defined based on the front, back and bottom described above, i.e. when an observer faces the wall on which the wall-mounted air conditioner indoor unit is installed, the left hand direction of the observer is the left side, and the right hand direction of the observer is the right side. In addition, the inner side and the outer side are defined based on a component in the shape of a cavity or a box or a cylinder, the side of the cavity or the box or the cylinder facing the internal space thereof is the inner side, and the outer side is the side of the cavity or the box facing the external space thereof.

[0044] Embodiment one:

[0045] Figure 1 A structural schematic view of the control circuit board of the air conditioner indoor unit provided in the embodiment one of the present application omits the lampshade and the fixing member; Figure 2 A structural schematic view of the control circuit board of the air conditioner indoor unit provided in the embodiment one of the present application omits the lampshade and the fixing member from another direction; as Figures 1-2 As shown in the figure, the control circuit board of the air conditioner indoor unit provided in the embodiment one of the present application is used for installation in an air conditioner electric control box. The control circuit board comprises a circuit board body 200. A display assembly 210 is arranged on the circuit board body 200. The display assembly 210 comprises a display lamp 211 located on the front of the circuit board body 200. A display driving circuit 213 is electrically connected to the display lamp 211. The display driving circuit 213 is located on the back of the circuit board body 200 and is opposite to the display lamp 211.

[0046] By arranging the display assembly 210 on the circuit board body 200, the display lamp 211 is controlled to display information. A box body for the display driving circuit 213 is not needed. The display assembly 210 and the control circuit board of the air conditioner indoor unit do not need to be connected separately, which shortens the assembly time. Moreover, the display driving circuit 213 is arranged on the back of the circuit board body 200 and is opposite to the display lamp 211. The area of the circuit board body 200 occupied by the display driving circuit 213 and the display lamp 211 can be significantly reduced, which is beneficial to the overall area of the control circuit board of the air conditioner indoor unit. Moreover, the display driving circuit 213 is arranged opposite to the display lamp 211, which shortens the wiring distance between the display lamp 211 and the display driving circuit 213, reduces the conductor length between the display lamp 211 and the display driving circuit 213, and is beneficial to the cost reduction of the control circuit board of the air conditioner indoor unit.

[0047] In the embodiment, the control circuit board of the indoor unit of the air conditioner is applied to the electric control box of the air conditioner to realize the integration of the display assembly 210 in the electric control box of the air conditioner. It should be noted that, in the present application, the circuit located on the front or back of the circuit board body 200 refers to the main body of the electronic element constituting the circuit located on the front or back of the circuit board body 200.

[0048] In the embodiment, the front of the circuit board body 200 is the side of the circuit board body 200 facing the front wall of the control circuit board of the indoor unit of the air conditioner, and the back of the circuit board body 200 is the side of the circuit board body 200 facing the back wall of the control circuit board of the indoor unit of the air conditioner. The display lamp 211 is located on the front of the circuit board body 200, and the display lamp 211 emits light which is projected on the front panel of the wall-mounted indoor unit of the air conditioner (not shown in the figure) through the lampshade 212 described below to display relevant information.

[0049] As shown in Figure 1 , optionally, the display lamp 211 is an LED lamp.

[0050] The LED lamp is used as the display lamp 211, which can emit light with large light flux in a small space to ensure that the pattern displayed through the lampshade 212 is clear on the front panel of the air conditioner.

[0051] As shown in Figures 1-3 , optionally, the display assembly 210 is located at the lower part of the circuit board body 200.

[0052] Since the electric control box of the air conditioner is applied to the wall-mounted indoor unit of the air conditioner and is located in front of the fan motor, the motor gland 320 and the refrigerant pipe 331 of the indoor heat exchanger 330, the space at the lower part of the electric control box of the air conditioner is relatively cramped. Such an arrangement means that the display driving circuit 213 is also located at the lower part of the electric control box of the air conditioner, and the electronic elements of the display driving circuit 213 are relatively thin. Therefore, the display assembly 210 is arranged at the lower part of the circuit board body 200, which is conducive to making full use of the space at the lower part of the electric control box of the air conditioner. In addition, such an arrangement can also reduce the position of the display assembly 210 relative to the electric control box of the air conditioner, and further reduce the position of the display assembly 210 relative to the wall-mounted indoor unit of the air conditioner. When the user needs to observe the information of the display assembly 210, he or she does not need to tilt his or her head at a large angle, thereby improving the user experience.

[0053] As shown in Figure 2 and Figure 4 , optionally, the back of the circuit board body 200 is provided with a strong current rectification filter circuit 231, a communication circuit 232 and a BUCK circuit 233, and the strong current rectification filter circuit 231, the communication circuit 232 and the BUCK circuit 233 are all located at the upper part of the circuit board body 200. The strong current rectification filter circuit 231, the communication circuit 232 and the BUCK circuit 233 all include power elements 221.

[0054] The above-mentioned circuit includes a high power element 221, and the control circuit board of the air conditioner indoor unit is arranged at the front of the wall-mounted air conditioner indoor unit. The air conditioner electric control box is provided with a fan motor, a motor gland 320 and a refrigerant pipe 331 of an indoor heat exchanger 330 at the lower rear part. The space below the control circuit board of the air conditioner indoor unit is relatively cramped. The above-mentioned circuit is arranged at the upper part of the circuit board body 200, which is beneficial to fully utilize the space inside the air conditioner electric control box and reduce the overall volume of the air conditioner electric control box. Moreover, the upper part of the air conditioner electric control box is not directly opposite to the refrigerant pipe 331, so the temperature of the outer side of the upper part of the rear wall of the air conditioner electric control box is higher than that of the lower part of the rear wall. The power element 221 in the above-mentioned circuit has a strong thermal effect and can generate more heat, thereby causing the temperature of the upper area of the space inside the air conditioner electric control box to be higher. Even so, since the temperature of the outer side of the upper part of the rear wall is relatively high, there is no large temperature difference between the inside and outside of the upper part of the rear wall, which is beneficial to control the risk of condensation on the rear wall of the air conditioner electric control box.

[0055] In addition, the circuit including the power element 221 is arranged at the upper part of the circuit board body 200, which is beneficial to pull the power element 221 away from the display driving circuit 213, improve the heat dissipation of the display driving circuit 213, and avoid the problem that the air after absorbing heat from the elements of the display driving circuit 213 is blocked by the power element 221 and difficult to flow upward smoothly, the temperature of the surrounding air of the display driving element rises, and the risk of burning out of the display driving element increases.

[0056] The height of the power element 221 is at least three times the height of the display lamp 211. It should be noted that the height of the display lamp 211 refers to the distance between the side of the lamp body of the display lamp 211 and the display lamp 211 after the display lamp 211 is normally installed on the circuit board body 200. The height of the power element 221 refers to the distance between the side of the circuit board body 200 on which the main body of the power element 221 is located and the main body of the power element 221 after the power element 221 is normally installed on the circuit board body 200.

[0057] The power element 221 can include electrolytic capacitors, resistors, rectifiers and other electronic elements. In this embodiment, the power element 221 with a height greater than three times the height of the display lamp 211 is located on the back of the circuit board body 200. The power element 221 is arranged on the back of the circuit board body 200, and in the control circuit board of the air conditioner indoor unit, the space on the back of the circuit board body 200 is relatively sufficient in at least part of the area, which is sufficient to arrange the power element 221 with a large height. In this application, some pin elements 222 with a height less than the height of the display lamp 211 can be arranged on the front of the circuit board body 200, which will not significantly increase the distance between the front wall of the air conditioner control box and the front surface of the circuit board body 200.

[0058] As shown in Figure 1 and Figure 3 Optionally, the circuit board body 200 is also provided with a bus voltage sampling circuit 238, and the bus voltage sampling circuit 238 is located in the middle of the circuit board body 200 in the height direction.

[0059] The bus voltage sampling circuit 238 is arranged in the middle of the height direction of the front of the circuit board body 200, which is close to the strong current rectifier filter circuit 231, so that the circuits related to strong current are more concentrated, which is convenient for controlling the range of the circuits on the circuit board body 200 and reduces the risk of interference of weak current related elements by strong current.

[0060] Specifically, the bus voltage sampling circuit 238 is located in the middle of the height direction of the front of the circuit board body 200.

[0061] As shown in Figure 4 Optionally, the circuit board body 200 is also provided with a buzzer circuit 235, an infrared receiving circuit 236 and a WiFi control circuit 237, and the buzzer circuit 235, the infrared receiving circuit 236 and the WiFi control circuit 237 are all located in the lower part of the circuit board body 200.

[0062] The lower part of the control circuit board of the air conditioner indoor unit is located before the fan motor, the motor gland 320 and the heat exchanger refrigerant pipe 331, so the lower part of the internal space of the air conditioner control box has a small thickness. The elements of the above-mentioned circuits have a low height, which is beneficial to fully utilize the space of the lower part of the control circuit board of the air conditioner indoor unit. Moreover, the elements of the above-mentioned circuits have a low height, and when the air absorbs heat from the elements of the above-mentioned circuits, the upward movement of the hot air will not be obviously hindered. After the elements in the lower part of the circuit board body 200 are cooled, the hot air can flow upward in time to ensure that the temperature of the elements in the lower part of the circuit board body 200 is appropriate, thereby improving the reliability of the control circuit board of the air conditioner indoor unit.

[0063] In addition, the circuit board body 200 is further provided with a micro control unit circuit 238. Specifically, the micro control unit circuit 238 is located at the middle part of the circuit board body 200 in the height direction.

[0064] As shown in Figure 4 Optionally, the circuit board body 200 is provided with a fan driving circuit 234, and the fan driving circuit 234 includes three intelligent power modules 2341 arranged in a triangular shape.

[0065] Arranging the three intelligent power modules 2341 in a triangular shape is conducive to increasing the distance between the three intelligent power modules 2341, so that the three intelligent power modules 2341 can better exchange heat with air, thereby reducing the operating temperature of the intelligent power modules 2341 and improving the reliability of the control circuit board of the air conditioner indoor unit.

[0066] Specifically, in the embodiment, the fan driving circuit 234 is located at the middle region of the circuit board body 200 in the height direction, and the three intelligent power modules 2341 are arranged in a left-two-right-one triangular shape. The fan motor terminal 241 is arranged adjacent to the fan driving circuit 234. On the right edge of the circuit board body 200, a temperature sensor terminal 242, an up-down air sweeping terminal 243, and a guide air driving motor terminal 244 are arranged in sequence. The temperature sensor terminal 242 is electrically connected with a temperature sensor, and the temperature sensor can include an indoor temperature sensor arranged at the air inlet of the wall-mounted air conditioner indoor unit, and an indoor coil temperature sensor arranged at the indoor coil of the indoor heat exchanger 330. The up-down air sweeping terminal 243 is electrically connected with an up-down air sweeping motor, and the guide air driving motor terminal 244 is electrically connected with a left-right air sweeping motor.

[0067] As shown in Figure 1 and Figure 3 Optionally, the display assembly 210 includes a lampshade 212 configured to be attached to the front panel of the wall-mounted air conditioner indoor unit, and the lampshade 212 is provided with light transmission holes, and each display lamp 211 is arranged corresponding to the light transmission hole.

[0068] By arranging the light transmission holes of the lampshade 212 corresponding to the display lamps 211 respectively, the brightness of each light transmission hole can be controlled by each display lamp 211, and by attaching the lampshade 212 to the front panel of the circuit board body 200, the lampshade 212 can be attached to the inner side of the front panel, so that the pattern of the light transmission holes can be clearly displayed on the front panel.

[0069] Specifically, in the embodiment, the lampshade 212 is arranged opposite to the circuit board body 200, and more specifically, the fixing member 214 of the display assembly 210 is fixedly connected to the circuit board body 200, the fixing member 214 of the display assembly 210 can be fixed by passing through the through hole on the circuit board body 200 through the buckle 215, and the fixing member 214 of the display assembly 210 is provided with an elastic member (not shown in the figure), which is a cylindrical spiral compression spring, one end of the cylindrical spiral compression spring abuts against the rear side of the lampshade 212, and the other end abuts against the front side of the fixing member 214. The cylindrical spiral compression spring can push the lampshade 212 to adhere to the front panel.

[0070] The light-transmitting holes on the lampshade 212 can be arranged in a double-8 shape, wherein the light-transmitting holes forming each 8 shape can be arranged in a seven-segment digital display to display temperature information of the air conditioner and the like.

[0071] Of course, in another implementation, the lampshade 212 can be fixedly connected to the front panel and adhere to the front panel, for example, a groove can be arranged on the rear side of the front panel, and the lampshade 212 is embedded in the groove and fixed. The lampshade 212 can still be slidably connected to the fixing member 214 fixed on the circuit board body 200. Thus, the light displayed by each display lamp 211 can still be mostly limited in the area surrounded by the lampshade 212 and the fixing member 214 corresponding to the display lamp 211, so as to reduce light leakage.

[0072] Embodiment two:

[0073] Figure 5 A perspective exploded view of the air conditioner electric control box provided in the embodiment two of the utility model; Figure 6 A sectional view of the air conditioner electric control box provided in the embodiment two of the utility model; as Figure 5 And Figure 6 As shown in the figures, the embodiment two further provides an air conditioner electric control box, the air conditioner electric control box comprises a box body 100 and the control circuit board of any one of the above, the control circuit board is installed in the inside of the box body 100, the box body 100 comprises a box seat 110 and a box cover 120, the circuit board body 200 is installed in the box seat 110, the box seat 110 is provided with a first notch part 111 and a second notch part 112, the first notch part 111 is used to accommodate the lampshade 212 to pass through, and the lampshade 212 is configured to protrude from the box seat 110;The second notch part 112 is communicated with the edge of the box seat 110 towards the box cover 120, and the box cover 120 is provided with an extension part, and the extension part shields the second notch part 112.

[0074] By setting the first notch part 111 to accommodate the lampshade 212 to pass through, the lampshade 212 can protrude from the box seat 110, so in the control circuit board of the air conditioner indoor unit, the lampshade 212 can be prior to the front wall of the air conditioner control box to fit the front panel of the wall-mounted air conditioner indoor unit, so as to more clearly display information, on the other hand, the part thickness of the display assembly 210 can coincide with the front wall thickness of the box seat 110, thereby reducing the overall thickness of the air conditioner control box. By setting the second notch part 112 to communicate the first notch part 111 and the front wall side edge of the box seat 110, the process of installing the circuit board body 200 to the box body 100 can be realized, and the light emitting part is inserted into the first notch part 111 at the same time, thereby improving the assembly efficiency.

[0075] Specifically, in the embodiment, the opening of the box seat 110 is to the right, and the box cover 120 is closed on the box seat 110 from right to left. The first notch part 111 is located at the lower part of the front wall of the box seat 110, so the second notch part 112 and the first notch part 111 jointly form a notch part opening to the right, so that the display assembly 210 can be inserted into the first notch part 111.

[0076] Embodiment three:

[0077] Figure 7 The air conditioner control box provided in the second embodiment of the utility model is installed in the wall-mounted air conditioner indoor unit and omits the box cover. As shown in Figure 7 The embodiment three further provides an air conditioner, which comprises a wall-mounted air conditioner indoor unit, the wall-mounted air conditioner indoor unit comprises a base 310, a wind wheel motor (not shown in the figure), a motor gland 320 and the above-mentioned air conditioner control box, the wind wheel motor is installed on the base 310, the motor gland 320 is covered on the upper side of the wind wheel motor and is fixedly connected with the base 310; the air conditioner control box is located in front of the wind wheel motor and the motor gland 320.

[0078] By setting the above-mentioned air conditioner control box in the air conditioner, correspondingly, the air conditioner has all the advantages of the above-mentioned air conditioner control box, which will not be repeated here.

[0079] Although the utility model discloses as above, the utility model is not limited to this. Any person skilled in the art, without departing from the spirit and scope of the utility model, can make various changes and modifications, therefore the protection scope of the utility model should be limited by the range defined in the claims.

[0080] Finally, it should be noted that, in this document, relational terms such as first and second, and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," "includes," "including" or any other variation thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0081] In the above embodiments, the orientation descriptions such as "upper", "lower" and the like are based on the figures shown.

[0082] The above description of disclosed embodiments provides enabling disclosure sufficient for one of ordinary skill in the art to practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application.

[0083] Accordingly, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control circuit board of an indoor unit of an air conditioner for installation in an electric control box of the air conditioner, characterized in that, The control circuit board comprises a circuit board body (200), wherein a display assembly (210) is arranged on the circuit board body (200), the display assembly (210) comprises display lamps (211) arranged on the front surface of the circuit board body (200) and display driving circuits (213) electrically connected to the display lamps (211), the display driving circuits (213) are arranged on the back surface of the circuit board body (200) and are opposite to the display lamps (211).

2. The control circuit board of the indoor unit of an air conditioner according to claim 1, wherein The display lamps (211) are LED lamps.

3. The control circuit board of claim 1, wherein, The display assembly (210) is arranged on the lower part of the circuit board body (200).

4. The control circuit board of claim 3, wherein, The back surface of the circuit board body (200) is provided with a strong current rectification filter circuit (231), a communication circuit (232) and a BUCK circuit (233), the strong current rectification filter circuit (231), the communication circuit (232) and the BUCK circuit (233) are all arranged on the upper part of the circuit board body (200), and the strong current rectification filter circuit (231), the communication circuit (232) and the BUCK circuit (233) all comprise power elements (221).

5. The control circuit board of claim 4, wherein, A bus voltage sampling circuit (238) is further arranged on the circuit board body (200), and the bus voltage sampling circuit (238) is arranged on the middle part of the circuit board body (200) in the height direction.

6. The control circuit board of claim 3, wherein, A buzzer circuit (235), an infrared receiving circuit (236) and a WiFi control circuit (237) are further arranged on the circuit board body (200), and the buzzer circuit (235), the infrared receiving circuit (236) and the WiFi control circuit (237) are all arranged on the lower part of the circuit board body (200).

7. The control circuit board of a room air conditioner according to any one of claims 1 to 6, wherein A fan driving circuit (234) is arranged on the circuit board body (200), and the fan driving circuit (234) comprises three intelligent power modules (2341) arranged in a triangular shape.

8. The control circuit board of the indoor unit of an air conditioner according to any one of claims 1 to 6, characterized by, The display assembly (210) comprises a lampshade (212), the lampshade (212) is configured to be attached to the front panel of an air conditioner indoor unit, the lampshade (212) is provided with light transmission holes, and each display lamp (211) is arranged corresponding to the light transmission hole.

9. An air conditioner electric control box, characterized by, The control circuit board of the air conditioner indoor unit of claim 8 is mounted in the inside of the box body (100), the box body (100) comprises a box seat (110) and a box cover (120), the control circuit board is mounted on the box seat (110), the box seat (110) is provided with a first notch part (111) and a second notch part (112), the first notch part (111) is used for accommodating the lampshade (212) to pass through, and the lampshade (212) is configured to protrude from the box seat (110); the second notch part (112) is connected between the first notch part (111) and the edge of the box seat (110) facing the box cover (120), and the box cover (120) is provided with an extension part, and the extension part shields the second notch part (112).

10. An air conditioner characterized by comprising: The air conditioner comprises an air conditioner indoor unit, the air conditioner indoor unit comprises a base (310), a fan motor, a motor gland (320) and the air conditioner electric control box of claim 9, the fan motor is installed on the base (310), the motor gland (320) is covered on the upper side of the fan motor and is fixedly connected with the base (310); the air conditioner electric control box is located in front of the motor gland (320).

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