CN214536477U

CN214536477U - Indoor unit of air conditioner

Info

Publication number: CN214536477U
Application number: CN202120453816.5U
Authority: CN
Inventors: 崔江涛; 尚庆安
Original assignee: Hisense Shandong Air Conditioning Co Ltd
Current assignee: Hisense Shandong Air Conditioning Co Ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-10-29
Anticipated expiration: 2031-03-02

Abstract

The utility model provides an indoor unit of air conditioner, include: a chassis including a front panel having a light-transmissive display panel; a display module connected to an inner side of the front panel and located at the light-transmitting display panel, the display module including: an inner display box; the circuit board is connected in the inner display box, one side of the circuit board, which is close to the front panel, is attached to the light-transmitting display panel, and the circuit board is provided with emergency keys; the outer display box is covered on the outer side of the inner display box and connected with the front panel, the outer display box is provided with an elastic key matched with the emergency key, and the emergency key is pressed down by pressing the elastic key to enable the elastic key to touch the emergency key; through setting up interior display box and outer display box for the circuit board is located including in the display box, and outer display box cover is established including outside the display box, protection circuit board that can be better sets up emergent button on the circuit board, has expanded the function of circuit board, can satisfy more consumers, sets up the elasticity button on outer display box, can be to emergent button operation, and simple structure is convenient.

Description

Indoor unit of air conditioner

Technical Field

The utility model belongs to the technical field of the air conditioner, especially, relate to an indoor unit of air conditioner.

Background

With the continuous improvement of the life quality of people, the air conditioner gradually becomes one of the essential household appliances of a family. The display module is the device commonly used on the indoor set of air conditioner, set up a display box among the current display module usually, the circuit board is connected in the display box, the elastic construction between circuit board and the display box is relatively poor, make to be connected between circuit board and the air conditioner shell inseparably, can make after long-time the use have the clearance between circuit board and the air conditioner shell, the influence shows, and the function of circuit board is comparatively single, generally only possess the function of demonstration, can't satisfy the manifold demand of consumer, make the competitiveness of indoor set of air conditioner less strong.

Disclosure of Invention

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. For this purpose,

according to an embodiment of the present disclosure, there is provided an air conditioner indoor unit including:

a chassis including a front panel having a light-transmissive display panel;

a display module connected to an inner side of the front panel and located at the light-transmissive display panel, the display module including:

an inner display box;

the circuit board is connected in the inner display box, one side of the circuit board, which is close to the front panel, is attached to the light-transmitting display panel, and the circuit board is provided with emergency keys;

the outer display box covers the outer side of the inner display box and is connected with the front panel, the outer display box is provided with an elastic key matched with the emergency key, and the elastic key is pressed to enable the elastic key to touch the emergency key to press the emergency key.

Through setting up interior display box and outer display box for the circuit board is located including in the display box, and outer display box cover is established including outside the display box, protection circuit board that can be better sets up emergent button on the circuit board, has expanded the function of circuit board, can satisfy more consumers, sets up the elasticity button on outer display box, can be to emergent button operation, and simple structure is convenient.

According to the embodiment of the disclosure, one side of the outer display box, which is close to the front panel, is provided with an inner display box placing groove, the inner display box is connected in the inner display box placing groove, the emergency key is arranged on one side of the circuit board and faces the side wall of the inner display box placing groove, and the elastic key is arranged on the side wall of the inner display box placing groove, so that the emergency key is convenient to operate.

According to the embodiment of the disclosure, the inner display box is clamped in the inner display box placing groove, the inner display box is provided with the elastic structure, the elastic structure abuts against the bottom wall of the inner display box placing groove and orders the inner display box to be close to one side of the front panel and the outer display box to be tightly attached, the elastic structure is arranged, the inner display box and the outer display box are tightly connected, the inner display box and the outer display box are prevented from shaking along the thickness direction of the outer display box in the outer display box, and the stability of the inner display box is enhanced.

According to the embodiment of the disclosure, the elastic key is close to one side of the emergency key is provided with the key protrusion, the display module is separated from the front panel, the elastic structure drives the key protrusion to be staggered with the emergency key, the display module is connected with the front panel, the light-transmitting display panel is opposite to the circuit board, the circuit board and the inner display box are pressed to be close to the bottom wall of the inner display box placing groove together, the key protrusion is opposite to the emergency key, when the display module is installed on the front panel, the key protrusion is opposite to the emergency key, when the elastic key is pressed, the key protrusion can touch the elastic key, and triggering caused by the emergency key before installation or in the installation process is avoided.

According to the embodiment of the disclosure, the elastic structure is an elastic plate, the elastic plate and the bottom wall of the inner display box placing groove are arranged at an acute angle, the end part of the elastic plate is abutted to the bottom wall of the inner display box placing groove, and the elastic plate is simple in structure and convenient to process.

According to the embodiment of the disclosure, a key pressing groove is formed in the center of the key protrusion, the cross section area of the outer end portion of the key pressing groove is smaller than that of the outer end portion of the emergency key, and the situation that the outer end portion of the emergency key is clamped into the key pressing groove to affect the normal work of the emergency key is avoided.

According to the embodiment of the disclosure, the inner display box is provided with the first side wall located at the elastic key, the first side wall is provided with the emergency key through hole matched with the emergency key, the elastic key passes through the emergency key through hole and contacts with the emergency key, and the influence on the elastic key and the emergency key is avoided while the structural strength of the inner display box is ensured.

According to the embodiment of the disclosure, be equipped with first spacing muscle on the outer wall of first lateral wall, first spacing muscle is relative with interior display box standing groove inside wall, and the interval between proper increase elastic button and the emergent button guarantees that the elastic button can not touch emergent button under the circumstances of not atress.

According to the embodiment of the disclosure, one side of the front panel, away from the inner display box, is provided with the circuit board placing groove, the bottom wall of the circuit board placing groove is provided with the circuit board penetrating hole, the circuit board is connected with the inner side of the circuit board placing groove, the circuit board is close to one side of the front panel, and the circuit board penetrates out of the circuit board penetrating hole, the inner display box is attached to the light-transmitting display panel, the display effect can be improved, the display is clear, and the fuzzy phenomenon caused by gaps is avoided.

According to the embodiment of the disclosure, a power line channel is formed between the outer display box and the inner display box, and the power line channel is communicated with the circuit board placing groove, so that a power line connected with a circuit board can be conveniently arranged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of an air conditioning indoor unit according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a front panel and a display module according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of a front panel and display module according to an embodiment of the present disclosure;

FIG. 4 is a partial block diagram of a front panel and display module according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a partial structure of a circuit board according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a circuit board and an inner display box according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a display case according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a circuit board and an inner display box according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural view of an outer display box according to an embodiment of the present disclosure;

fig. 11 is a partial structural schematic diagram of a circuit board and an external display box according to an embodiment of the present disclosure.

In the above figures: an indoor air-conditioning unit 100; a housing 1; a front panel 11; a light-transmitting display panel 111; a first mating hole 112; a fourth catching groove 113; a display module 2; an outer display box 21; the inner display box placing groove 211; a flexible key 212; a key protrusion 2121; a key groove 21211; an outer power cable case 213; a third catch 214; a first guide plate 215; a first mating portion 216; a fourth buckle 217; an inner display box 22; a circuit board placement groove 221; the circuit board passes through the hole 2211; a first buckle 2212; a second buckle 2213; the first abutment rib 2214; abutment step 22141; a resilient structure 222; a first side wall 223; an emergency key through-hole 2231; a first spacing rib 2232; a second side wall 224; an inner power cord housing 225; the third sidewall 226; a fourth side wall 227; a third card slot 228; a first guide groove 2291; a second positioning rib 2292; a circuit board 23; an emergency button 231; a power line channel 24.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The air conditioner includes an air conditioner indoor unit and an air conditioner outdoor unit, the air conditioner outdoor unit is a part of a refrigeration cycle including a compressor and an outdoor heat exchanger, the air conditioner indoor unit includes an indoor heat exchanger, and an expansion valve may be provided in the air conditioner indoor unit or the air conditioner outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. The air conditioner is used as a heater in a heating mode when the indoor heat exchanger is used as a condenser, and as a cooler in a cooling mode when the indoor heat exchanger is used as an evaporator.

The present invention provides an air conditioning indoor unit 100, which will be described below with reference to fig. 1 to 11, wherein fig. 1 is a front view of the air conditioning indoor unit.

Referring to fig. 1, the air conditioning indoor unit 100 includes a cabinet 1, the cabinet 1 forming an external appearance of the air conditioning indoor unit, the cabinet 1 including a front panel 11, a rear panel disposed behind the front panel 11, a pair of side panels disposed on left and right sides of the front panel 11 and the rear panel, an upper panel disposed above the front panel and the rear panel, and a lower panel disposed below the front panel and the rear panel.

In the air conditioning indoor unit 100, the side on which the front panel is provided is the front side, and the side on which the rear panel is provided is the rear side.

The indoor unit of the air conditioner can be a cabinet or an on-hook, and when the indoor unit of the air conditioner is on-hook, the indoor unit of the air conditioner can be hung on the wall, wherein the rear panel of the indoor unit of the air conditioner is close to the wall.

An air inlet and an air outlet are formed in the casing 1, the air inlet and the air outlet are communicated to form an air duct, the indoor unit of the air conditioner further comprises a heat exchanger and a fan, the heat exchanger and the fan are arranged in the air duct, the heat exchanger is used for exchanging heat with indoor air, the fan is used for introducing air into the air duct from the air inlet, and the air is discharged from the air outlet after the heat exchanger exchanges heat with the heat exchanger, so that the indoor unit of the air conditioner is cooled and heated.

When the air conditioner indoor unit is hung, the front panel can be used for forming an air outlet, and the upper panel can be used for forming an air inlet. When the air conditioning indoor unit is a cabinet type air conditioner, the front panel can be used for forming an air outlet, the rear panel can be used for forming an air inlet, and the air inlet and the air outlet can be arranged on other panels. The air outlet can be provided with an air deflector for guiding air exhausted from the indoor unit of the air conditioner, and the air inlet can be provided with an air inlet grille for filtering the air and preventing larger impurities from entering the air channel.

Referring to fig. 2, the indoor unit 100 of the air conditioner further includes a display module 2, a transparent display panel 111 is disposed on the front panel 11, and the display module 2 is disposed on the inner side of the front panel 11 and located at the transparent display panel 111. The light-transmitting display panel may be a glass panel or a plastic panel as long as clear display is possible.

Referring to fig. 3 and 6, the display module 2 includes an outer display box 21, an inner display box 22 and a circuit board 23, wherein the circuit board 23 is connected in the inner display box 22, one side of the circuit board 23 close to the front panel 11 is attached to the transparent display panel 111, the outer display box 21 is covered on the outer side of the inner display box 22, the outer display box 21 is further connected to the front panel 11, and the inner display box 22 may be connected in the outer display box 21.

The cross section of the front panel 11 can be arc-shaped, and one side of the circuit board 23 close to the front panel can be designed into arc-shaped matched with the front panel, so that the circuit board is tightly attached to the light-transmitting display panel, and clear display of the display module is facilitated.

Specifically, an inner display box placement groove 211 is formed in a side of the outer display box 21 close to the front panel 11, and the inner display box 22 is connected to the inner display box placement groove. One side that the front panel was kept away from to interior display box 22 is equipped with circuit board standing groove 221, is equipped with circuit board wear out hole 2211 on the diapire of circuit board standing groove 221, and circuit board 23 is connected in the circuit board standing groove and circuit board 23 one side near the front panel is worn out through circuit board wear out hole 2211 and is interior display box and the laminating of printing opacity display panel, can improve display effect for show clearly, avoid causing the fuzzy phenomenon because the clearance. Wherein, the circuit board placing groove 221 may be provided in the middle of the inner display box.

Referring to fig. 5 and 6, the circuit board 23 is provided with an emergency button 231, the external display box 21 is provided with an elastic button 212 adapted to the emergency button 231, and the elastic button 212 is pressed to touch the emergency button 231 to press the emergency button.

Specifically, emergent button 231 locates one side of circuit board 23 and towards the lateral wall of interior display box standing groove, and elastic button 212 is located on the lateral wall of interior display box standing groove, conveniently operates emergent button.

Referring to fig. 7 and 8, the inner display box 22 is clamped in the inner display box placement groove 211, an elastic structure 222 is disposed on the inner display box, and the elastic structure 222 abuts against the bottom wall of the inner display box placement groove and drives one side of the inner display box close to the front panel to be tightly attached to the outer display box. Set up elastic construction, the inside and outside demonstration box zonulae occludens that makes, avoid can interior demonstration box in the outside demonstration box along outside demonstration box thickness direction rock, the stability of demonstration box in the reinforcing.

Specifically, the elastic structure can be the elastic plate, and the elastic plate is acute angle setting with interior display box standing groove diapire, and the elastic plate 222 tip offsets with interior display box standing groove diapire, sets up the elastic plate, simple structure, convenient processing. The elastic structure can also be a spring, and the end part of the spring is vertical to and propped against the bottom wall of the inner display box placing groove.

Referring to fig. 11, the elastic key 212 is provided with a key protrusion 2121 on a side thereof adjacent to the emergency key 231, when the display module 2 is separated from the front panel 11, the elastic structure 222 drives the key protrusion 2121 to be staggered with the emergency key 231, and when the display module 2 is connected to the front panel 11, the transparent display panel 111 presses the circuit board 23 to drive the circuit board 23 to move together with the inner display box 22 toward the bottom wall of the inner display box accommodating slot until the key protrusion is opposite to the emergency key 231. When the display module is installed on the front panel, the key protrusions are opposite to the emergency keys, when the elastic keys are pressed down, the key protrusions can touch the elastic keys, and triggering of the emergency keys before installation or in the installation process is avoided.

The central position of the key protrusion 2121 is provided with a key groove 21211, wherein the cross sectional area of the end part of the key groove close to the emergency key is smaller than that of the outer end part of the emergency key, so that the influence on the normal work of the emergency key caused by the fact that the outer end part of the emergency key is clamped into the key groove is avoided.

Referring to fig. 7, the inner display box 22 has a first side wall 223 located at the elastic key, an emergency key through hole 2231 adapted to an emergency key is formed in the first side wall 223, and the elastic key 212 contacts with the emergency key through hole 2231, so that the structural strength of the inner display box is ensured, and the elastic key and the emergency key are prevented from being affected.

Referring to fig. 7, be equipped with first spacing muscle 2232 on the outer wall of first lateral wall 223, first spacing muscle 2232 is relative with interior display box standing groove inside wall, and suitable increase elasticity button and the interval between the emergent button guarantee that elasticity button can not touch emergent button under the condition of not atress, avoids elasticity button to rock the in-process and touches emergent button, influences circuit board 23's normal work. Specifically, first spacing muscle can set up to at least one, and specific can set up to having two, and two first spacing muscle are close to the both ends setting of interior display box first lateral wall respectively.

The inner display box further has an inner display box second side wall 224 disposed opposite the inner display box first side wall, and the elastic plate 222 is disposed on the inner wall of the inner display box first side wall and/or the inner display box second side wall and outside the circuit board placement slot. Specifically, the elastic plate may have at least one, and may be four, two are provided on the first side wall of the inner display box and the second side wall of the inner display box, respectively, and the two elastic plates located on the same side wall of the inner display box are located on two sides of the circuit board placement groove.

Referring to fig. 8, a power line channel 24 is formed between the outer display box and the inner display box, the power line channel 24 is communicated with the circuit board placing groove 221, the indoor unit of the air conditioner further includes a power line (not shown) connected to the circuit board 23, the power line passes through the power line channel to be connected to the circuit board, the power line channel is provided, and the power line connected to the circuit board is conveniently provided.

Specifically, the power line channel is located at the second side wall of the inner display box, the inner display box is provided with an inner power line shell 225 arranged on the outer side of the second side wall of the inner display box, an outer power line shell 213 matched with the inner display box is arranged on the outer display box, and the inner power line shell and the outer power line shell form the power line channel.

Referring to fig. 7, the circuit board 23 is clamped in the circuit board placing groove 221, specifically, a first buckle 2212 and a second buckle 2213 are arranged on the side walls of the circuit board placing groove, and the first buckle 2212 and the second buckle 2213 are respectively arranged on the side walls of the two oppositely arranged circuit board placing grooves. The first and second latches 2222 and 2223 each have at least one, and the total number of the first and

second latches

2212 and 2213 is at least three, so that the circuit board 23 can be stably supported.

When the circuit board card was gone into in the circuit board standing groove 221, the diapire of circuit board and circuit board standing groove offseted, avoided the circuit board to rock along circuit board thickness direction in the circuit board standing groove, increased circuit board's stability.

Referring to fig. 7 and 8, the first abutting rib 2214 is arranged on the side wall of the circuit board placing groove, an abutting step 22141 is formed on the first abutting rib 2214, the side wall of the abutting step 22141 and/or the bottom wall of the abutting step abuts against the circuit board, the circuit board can be prevented from shaking in the length direction and/or the width direction of the circuit board, and the stability of the circuit board is improved.

Referring to fig. 7, the inner display box 22 further includes a third sidewall 226 and a fourth sidewall 227, the ends of which are connected to the first sidewall and the second sidewall, wherein a third slot 228 is formed on the third sidewall and the fourth sidewall, and the third slot 228 is formed by extending from one end of the third sidewall and the fourth sidewall near the front panel to one side far away from the front panel. The side wall of the inner display box placing groove is provided with a third buckle 214 matched with the third clamping groove, and the third buckle 214 is clamped with the third clamping groove 228.

Referring to fig. 7 and 9-10, a first guide plate 215 is disposed at a connection portion between the bottom wall and the side wall of the inner display box placement groove, a first guide groove 2291 adapted to the first guide plate 215 is disposed on the third side wall and the fourth side wall, and the first guide groove 2291 is formed by extending from one end of the third side wall and the fourth side wall far from the front panel to one side close to the front panel. When interior display box joint was in interior display box standing groove, first deflector was located first guide way.

Be equipped with second location muscle 2292 on the outer wall of third lateral wall and fourth lateral wall, the spacing muscle 2292 of second is relative with interior display box standing groove inside wall, and the spacing muscle 2292 of second offsets with interior display box standing groove lateral wall, and the display box rocks in can avoiding.

Referring to fig. 4, the outer display box 21 is connected to the front panel 11 in a clamping manner, specifically, a first inserting portion 216 and a fourth buckle 217 are formed on the outer side wall of the outer display box, the first inserting portion 216 and the fourth buckle portion 217 are arranged on the two side walls of the outer display box, the inner side wall of the front panel is provided with a first inserting hole 112 matched with the first inserting portion and a fourth clamping groove 113 matched with the fourth buckle, the first inserting portion is inserted into the first inserting hole 112, and the fourth buckle is connected with the fourth clamping groove in a clamping manner, so that the outer display panel is connected with the front panel in a clamping manner.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An indoor unit of an air conditioner, comprising:

a chassis including a front panel having a light-transmissive display panel;

an inner display box;

2. An indoor unit of an air conditioner according to claim 1, wherein an inner display box placing groove is formed in a side of the outer display box adjacent to the front panel, the inner display box is connected to the inner display box placing groove, the emergency button is disposed on a side of the circuit board and faces a side wall of the inner display box placing groove, and the elastic button is disposed on the side wall of the inner display box placing groove.

3. An indoor unit of an air conditioner according to claim 2, wherein the inner display box is fastened in the inner display box placement groove, an elastic structure is arranged on the inner display box, the elastic structure abuts against the bottom wall of the inner display box placement groove and drives one side, close to the front panel, of the inner display box to be tightly attached to the outer display box.

4. The indoor unit of claim 3, wherein a key protrusion is disposed on a side of the elastic key close to the emergency key, when the display module is separated from the front panel, the elastic structure drives the key protrusion to be staggered with the emergency key, and when the display module is connected to the front panel, the transparent display panel presses the circuit board to drive the circuit board and the inner display box to move together toward a direction close to the bottom wall of the inner display box accommodating slot until the key protrusion is opposite to the emergency key.

5. An indoor unit of an air conditioner according to claim 3, wherein the elastic structure is an elastic plate disposed at an acute angle to the bottom wall of the inner display box placement groove and having an end portion abutting against the bottom wall of the inner display box placement groove.

6. An indoor unit of an air conditioner according to claim 4, wherein a key groove is formed at a center position of the protrusion of the key, and a cross-sectional area of an outer end portion of the key groove is smaller than a cross-sectional area of an outer end portion of the emergency key.

7. The indoor unit of claim 2, wherein the inner display box has a first sidewall at the elastic button, the first sidewall is provided with an emergency button through hole adapted to the emergency button, and the elastic button contacts the emergency button through hole.

8. An indoor unit of an air conditioner according to claim 7, wherein a first stopper rib is provided on an outer wall of the first side wall, and the first stopper rib is opposed to an inner side wall of the inner display box accommodating groove.

9. An indoor unit of an air conditioner according to claim 1, wherein a circuit board placement groove is formed in a side of the inner display box away from the front panel, a circuit board insertion hole is formed in a bottom wall of the circuit board placement groove, the circuit board is connected to the circuit board placement groove, and a side of the circuit board close to the front panel penetrates out of the inner display box through the circuit board insertion hole to be attached to the transparent display panel.

10. An indoor unit of an air conditioner according to claim 9, wherein a power line passage is formed between the outer display box and the inner display box, and the power line passage communicates with the circuit board placement groove.