Dishwasher

Abstract

The present invention relates to a dishwasher, which can effectively prevent degradation in the rigidity of a tub by minimizing the number of openings through which visible light generated by a light source unit passes and the open area of each opening, attaches, to the inner surface of the tub, the components of a lighting device disposed inside the tub, and attaches, to the outer surface of the tub, the components of the lighting device disposed outside the tub, wherein the inner components and the outer components are arranged to not be fastened to each other such that an additional fastening means penetrating the tub can be excluded and a fastening hole through which the fastening means passes can be omitted, and thus manufacturing costs and manufacturing time can be remarkably reduced.

Description

dishwasher

[0001] The present invention relates to a dishwasher, and more particularly, to a dishwasher in which the number of openings through which visible light generated from a light source passes and the open area of ​​each opening are minimized, thereby effectively preventing a decrease in rigidity of a tub, and in which a component of a lighting device arranged inside a tub is attached to an inner surface of the tub and a component of a lighting device arranged outside the tub is attached to an outer surface of the tub, but the inner and outer components are arranged in an unfastened state so that an additional fastening means penetrating the tub can be eliminated, thereby enabling the omission of a fastening hole through which the fastening means passes, thereby significantly reducing manufacturing costs and manufacturing time.

[0002]

[0003] A dishwasher is a device that washes items stored inside, such as dishes and cooking utensils, by spraying a cleaning solution, such as water. The cleaning solution may contain detergent.

[0004] A dishwasher is generally configured to include a tub that forms a washing space, a storage section that accommodates items to be washed inside the washing tub, a spray arm that sprays washing water into the storage section, and a sump that stores water and supplies washing water to the spray arm.

[0005] By using this dishwasher, the time and effort required to wash dishes and other items after a meal can be reduced, contributing to user convenience.

[0006] Typically, a dishwasher is configured to perform a washing cycle for washing an object to be washed, a rinsing cycle for rinsing the object to be washed, and a drying cycle for drying the object to be washed after washing and rinsing are completed.

[0007] Before the process, the user must open and close the door to store the dishes inside the dishwasher and to take out the washed and dried dishes after the process is completed.

[0008] In order to effectively check the storage status of dishes and the washing status of dishes without pulling the storage compartment containing dishes out of the tub when opening and closing the door, at least one lighting device may be provided inside the tub.

[0009] Considering the shape of the tub in the form of a box with an open front, the lighting device can be positioned to irradiate visible light toward the dishes on either the rear side or both sides of the tub that constitute the inner surface of the tub.

[0010] However, the lighting device applied to the dishwasher may be provided in the form of a point light with a relatively small light-emitting area.

[0011] Therefore, it is generally difficult to effectively illuminate dishes stored in a tub using only a single lighting device.

[0012] In this regard, U.S. Patent Publication No. 10,281,134 (Prior Document 001) discloses a configuration of a dishwasher equipped with a lighting device of the surface lighting type having a light-emitting surface having a relatively much larger light-emitting area than that of the point lighting type.

[0013] The lighting device of the dishwasher disclosed in prior art document 001 may be provided in multiple units, and each unit may be arranged to be fixed to the rear surface of the tub.

[0014] At this time, the light source unit, which constitutes each lighting device and is composed of electric components, is configured to be fixed to the outer surface of the rear surface of the tub so as not to be affected by the high temperature and humidity environment formed inside the tub.

[0015] On the rear surface of the tub, a plurality of openings are formed with an open area corresponding to the area of ​​the light-emitting surface corresponding to each lighting device to allow visible light generated from the light source to be introduced into the interior of the tub.

[0016]

[0017] The lighting device of the aforementioned prior art document 001 is configured such that some of the components are placed outside the tub and the remaining components are placed inside the tub.

[0018] In this way, a plurality of fasteners extend through the tub as a means for fastening the components of the lighting device placed inside the tub and the components of the lighting device placed outside the tub together to the tub.

[0019] Accordingly, the dishwasher of prior art document 001 has a problem in that the rigidity of the rear surface of the tub where the through hole and the fastening hole are formed is inevitably significantly reduced because, in addition to the through hole having a considerably large open area corresponding to the area of ​​the light-emitting surface, a fastening hole through which each fastener passes must be formed around the through hole.

[0020] In addition, the dishwasher of prior art document 001 has the problem that the manufacturing cost and manufacturing time may increase due to additional processing of fastening holes in addition to the through holes.

[0021] In addition, the dishwasher of prior art document 001 has the problem that the manufacturing cost may increase and the manufacturing process may become complicated because a sealing means must be added to the fastening hole to prevent leakage of washing water through the fastening hole.

[0022] The present invention has been devised to solve the problems of the prior art, and a first object of the present invention is to provide a dishwasher that can effectively prevent the rigidity of a tub from being reduced by minimizing the number of openings through which visible light generated from a light source passes and the open area of ​​each opening.

[0023] In addition, the present invention is configured to attach a lighting device component disposed inside a tub to the inner surface of the tub and to attach a lighting device component disposed outside the tub to the outer surface of the tub, but the inner component and the outer component are disposed in an unfastened state to each other so that an additional fastening means penetrating the tub can be excluded, thereby providing a dishwasher in which the manufacturing cost and manufacturing time can be significantly reduced by omitting a fastening hole through which the fastening means passes.

[0024] In addition, the present invention provides a dishwasher in which the front cover is attached to the tub through a sealing member arranged to prevent leakage between the front cover arranged inside the tub and the inner surface of the tub, thereby minimizing the fastening means or fixing means and significantly reducing the manufacturing process and manufacturing time.

[0025] In addition, the fourth object of the present invention is to provide a dishwasher in which the lighting device is configured to be entirely placed inside the tub, or only the diffusion plate forming the light-emitting surface is configured to be placed inside the tub, thereby minimizing the size of the opening, thereby effectively preventing a decrease in rigidity of the tub and significantly reducing the possibility of leakage.

[0026] The objectives of the present invention are not limited to those mentioned above. Other objectives and advantages of the present invention not mentioned above can be understood through the following description and will be more clearly understood through the embodiments of the present invention. Furthermore, it will be readily apparent that the objectives and advantages of the present invention can be realized by the means and combinations thereof set forth in the claims.

[0027]

[0028] A dishwasher according to the present invention comprises: a tub that accommodates dishes and forms a washing space with an open front; and a lighting device that is installed on an inner surface of the tub and has a light-emitting surface that irradiates visible light toward the washing space; wherein an opening that connects the inside and the outside of the tub is provided on the inner surface of the tub, and the lighting device is characterized in that it passes through the opening and is disposed on the tub across the inside and the outside of the tub.

[0029] In addition, the lighting device includes a light source unit that generates the visible light; a light guide plate that converts a path of movement of the visible light generated from the light source unit; a diffusion plate that forms the light-emitting surface and diffuses visible light introduced through the light guide plate toward the light-emitting surface; and a front cover that is coupled to an outer edge of the light guide plate and is fixed to the tub; wherein the front cover is attached to an inner surface of the tub, and the opening can be closed by the front cover and the diffusion plate.

[0030] In addition, the lighting device may further include a first sealing member that attaches the front cover to the inner surface of the tub and prevents water leakage between the front cover and the tub; and a second sealing member that attaches the diffusion plate to the front cover and prevents water leakage between the front cover and the diffusion plate.

[0031] In addition, the tub is provided with a protruding surface that is arranged around the opening and is formed convexly toward the washing space, and one side of the front cover that is arranged to face the inner surface of the tub is provided with a first groove that is formed at a position corresponding to the protruding surface and is formed concavely toward the washing space so that the protruding surface is inserted, and the first sealing member can be arranged between the protruding surface and the first groove.

[0032] In addition, the protruding surface is provided with a plurality of through holes through which the first sealing member passes, and the plurality of through holes can be arranged at equal intervals along the protruding surface.

[0033] In addition, the lighting device further includes a mid-case that is arranged on the outside of the tub and accommodates and supports the light source and the light guide plate; and the tub includes a rear bracket that is arranged around the opening on the outer surface of the inner surface and fixes the mid-case to the tub; and the mid-case can be detachably fixed to the tub in a non-adhesive manner by the rear bracket.

[0034] In addition, the rear bracket may include a bracket body extending along the periphery of the opening and fixed to the outer surface of the inner surface; and a plurality of fixed parts, one end of which is a fixed end integrally connected to the bracket body and the other end is a free end extending toward the opening, and which elastically support the outer edge of the mid-case.

[0035] In addition, the plurality of fixing parts include a pair of first fixing parts arranged at positions spaced apart in the vertical direction with the mid-case interposed therebetween, and the vertical distance between the pair of first fixing parts is configured to vary as it advances toward the bracket body, and the minimum vertical distance between the pair of first fixing parts can be smaller than the vertical width of the mid-case, and the maximum vertical distance between the pair of first fixing parts can be larger than the vertical width of the mid-case.

[0036] In addition, the plurality of fixing parts include a pair of second fixing parts arranged at positions spaced apart in the left-right direction with the mid-case in between; and a left-right distance between the pair of second fixing parts is configured to vary as it advances toward the bracket body, and a minimum left-right distance between the pair of second fixing parts can be smaller than a left-right width of the mid-case, and a maximum left-right distance between the pair of second fixing parts can be larger than a left-right width of the mid-case.

[0037] In addition, after the front cover is fixed to the inside of the tub while the light guide plate is attached to the front cover, the mid-case is fixed to the outside of the tub, and the front cover and the mid-case can be fixed to the tub in a mutually unfastened state.

[0038] In addition, the light source unit may extend in the left and right directions parallel to the top or bottom of the light-emitting surface.

[0039] In addition, the light source unit may extend in the vertical direction parallel to the left or right end of the light-emitting surface.

[0040] Additionally, the lighting device may be fixed to a rear surface of the inner surface of the tub, which is positioned opposite the open front surface.

[0041] In addition, the tub further includes a plurality of guide rails arranged on both sides of the inner surface of the tub to guide movement of the storage portion where the dishes are stored, and the lower end of the light-emitting surface in the vertical direction may be positioned between a lower rail arranged at the lowest side among the plurality of guide rails and an upper rail arranged at a higher position than the lower rail.

[0042] Additionally, the upper end of the light-emitting surface in the vertical direction may be positioned between the top rail, which is positioned at the uppermost side among the plurality of guide rails, and the upper rail.

[0043] In addition, the lighting device includes a light source unit that generates the visible light; a diffusion plate that forms the light-emitting surface and diffuses the visible light generated from the light source unit toward the light-emitting surface; and a cover that is disposed above the diffusion plate and accommodates the light source unit and the upper end of the diffusion plate therein; and an extension tube that protrudes toward the inner surface of the tub and extends to the outside of the tub through the opening is provided on one side of the cover, and the cover can be disposed entirely inside the tub except for the extension tube.

[0044] Additionally, one end of the light source unit may pass through the cover and extend to the outside of the tub along the inside of the extension tube.

[0045] In addition, the lighting device may further include a gasket disposed between the opening and the extension tube, and preventing leakage between the opening and the extension tube.

[0046] In addition, the lighting device includes a light source unit that generates the visible light; a diffusion plate that diffuses the visible light generated by the light source unit toward the washing space and forms the light-emitting surface; and a cover that is disposed above the diffusion plate and accommodates the light source unit and the upper end of the diffusion plate therein; wherein the light source unit and the cover are disposed outside the tub, and the diffusion plate can extend from the outside of the tub toward the inside of the tub through the opening.

[0047] Additionally, the opening may be formed on a corner surface having a predetermined curvature, connecting the upper surface of the tub and the rear surface of the tub.

[0048]

[0049] The dishwasher according to the present invention has the effect of effectively preventing the rigidity of the tub from being reduced by minimizing the number of openings through which visible light generated from a light source passes and the open area of ​​each opening.

[0050] In addition, the dishwasher according to the present invention is configured so that the internal components and the external components are arranged in an unfastened state with respect to each other, thereby eliminating the need for an additional fastening means penetrating the tub, and thus the fastening hole through which the fastening means passes can be omitted, thereby having the effect of significantly reducing manufacturing costs and manufacturing time.

[0051] In addition, the dishwasher according to the present invention is configured so that the front cover is attached to the tub through a sealing member arranged to prevent water leakage between the front cover arranged inside the tub and the inner surface of the tub, thereby minimizing the fastening means or fixing means, thereby having the effect of significantly reducing the manufacturing process and manufacturing time.

[0052] In addition, the dishwasher according to the present invention can minimize the size of the opening by configuring the lighting device to be positioned entirely within the tub or by configuring only the diffusion plate forming the light-emitting surface to be positioned within the tub, thereby effectively preventing a decrease in rigidity of the tub and significantly reducing the possibility of leakage.

[0053] In addition to the effects described above, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

[0054]

[0055] FIG. 1 is a front perspective view of a dishwasher according to an embodiment of the present invention.

[0056] Figure 2 is a schematic cross-sectional view of the dishwasher illustrated in Figure 1.

[0057] Figure 3 is a front perspective view showing the dishwasher door of Figure 1 in an open state.

[0058] FIG. 4 and FIG. 5 are a front perspective view and a front view showing a state in which a lighting device is arranged on the rear surface of a tub according to the first embodiment of the present invention.

[0059] Figure 6 is an exploded perspective view of a lighting device according to the first embodiment of the present invention.

[0060] Fig. 7 is a vertical cross-sectional view showing the lighting device illustrated in Fig. 6 installed in a tub.

[0061] Fig. 8 is a cross-sectional view showing the configuration of the lighting device illustrated in Fig. 6, with the diffuser plate and front cover attached to the rear surface of the tub.

[0062] Fig. 9 is a partially enlarged view showing a state in which a protruding surface is formed around the opening of the tub for the purpose of guiding the attachment position of the diffuser plate shown in Fig. 8 and improving the bonding strength to the diffuser plate.

[0063] Figure 10 is a front perspective view showing the process of attaching the diffuser plate and front cover to the rear surface of the tub.

[0064] Figure 11 is a front perspective view showing the diffuser plate and front cover attached to the rear surface of the tub.

[0065] Fig. 12 is a vertical cross-sectional view showing the process in which the mid-case, light source unit, light guide plate, and rear cover, which are arranged on the outside of the tub among the components of the lighting device shown in Fig. 6, are joined to the rear surface of the tub.

[0066] Figure 13 is a vertical cross-sectional view showing the state in which the mid-case, light source, light guide plate, and rear cover are combined on the rear surface of the tub.

[0067] Fig. 14 is a rear perspective view showing the process of attaching the rear bracket shown in Fig. 13 to the rear surface of the tub.

[0068] Fig. 15 is a rear view showing the rear bracket illustrated in Fig. 13 attached to the rear surface of the tub.

[0069] Figures 16 and 17 are front views for explaining the positions where the light source unit shown in Figure 6 is arranged.

[0070] Fig. 18 is a front perspective view showing a lighting device according to a second embodiment of the present invention attached to the rear surface of a tub.

[0071] Figure 19 is a vertical cross-sectional view of Figure 18.

[0072] Fig. 20 is an exploded perspective view of the lighting device illustrated in Fig. 18.

[0073] Fig. 21 is a cross-sectional view showing the lighting device illustrated in Fig. 18 attached to the rear surface of the tub, with the extension tube passing through the opening of the tub and protruding outside the tub.

[0074] Fig. 22 is a front perspective view showing a lighting device according to a third embodiment of the present invention attached to the rear surface of the tub through an opening of the tub.

[0075] Figure 23 is a vertical cross-sectional view of Figure 22.

[0076] Fig. 24 is a front perspective view showing the configuration of the lighting device shown in Fig. 22, excluding the front cover and rear cover.

[0077]

[0078] The above-described objects, features, and advantages will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can easily practice the technical idea of ​​the present invention. In describing the present invention, if it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the gist of the present invention, a detailed description thereof will be omitted. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

[0079] Although terms like "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless otherwise specified, a "first" component may also be a "second" component.

[0080] Throughout the specification, unless otherwise specifically stated, each element may be singular or plural.

[0081] Hereinafter, the phrase "any configuration is placed on (or below)" a component or "on (or below)" a component may mean that any configuration is placed in contact with the upper surface (or lower surface) of said component, and that other configurations may be interposed between said component and any configuration placed on (or below) said component.

[0082] Additionally, when it is described that a component is "connected," "coupled," or "connected" to another component, it should be understood that the components may be directly connected or connected to one another, but that other components may also be "interposed" between the components, or that each component may be "connected," "coupled," or "connected" through another component.

[0083] As used herein, singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "consisting of" or "comprising" should not necessarily be construed to include all of the components or steps described in the specification, and should be construed to mean that some of the components or steps may not be included, or that additional components or steps may be included.

[0084] Additionally, the singular expressions used herein include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "consist of" or "comprises" should not be construed to necessarily include all of the various components or various steps described in the specification, and should be construed to mean that some of the components or some of the steps may not be included, or that additional components or steps may be included.

[0085] Throughout the specification, when we refer to "A and / or B", this means A, B, or A and B, unless otherwise stated, and when we refer to "C through D", this means C or more and D or less, unless otherwise stated.

[0086] Hereinafter, the present invention will be described with reference to drawings showing a configuration according to an embodiment of the present invention.

[0087] [Overall structure of a dishwasher]

[0088] Hereinafter, the overall structure of a dishwasher (1) according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

[0089] FIG. 1 is a front perspective view showing a dishwasher (1) according to the present invention, FIG. 2 is a simplified cross-sectional view briefly showing the internal structure of the dishwasher (1) according to the present invention, and FIG. 3 is a front perspective view showing the dishwasher (1) with the door (30) open.

[0090] As illustrated in FIGS. 1 to 3, a dishwasher (1) according to the present invention comprises a case (10) forming an outer shape, a tub (20) installed inside the case (10) and forming a washing space (21) in which an object to be washed is washed and having an open front surface, a door (30) for opening and closing the open front surface of the tub (20), a driving unit (40) located at the bottom of the tub (20) for supplying, collecting, circulating, and draining washing water for washing an object to be washed, a storage unit (50) detachably provided in the internal washing space (21) of the tub (20) for placing an object to be washed, and a spray unit installed adjacent to the storage unit (50) for spraying washing water for washing an object to be washed.

[0091] At this time, the objects to be washed placed in the storage unit (50) may be, for example, dishes, plates, spoons, chopsticks, and other cooking utensils. Unless otherwise stated, the objects to be washed are referred to as dishes.

[0092] The tub (20) can be formed in a box shape with the front surface entirely open, and corresponds to a configuration known as a so-called washing tank.

[0093] A washing space (21) is formed inside the tub (20), and the open front surface can be opened and closed by a door (30).

[0094] The tub (20) can be formed by pressing a metal plate that is resistant to high temperature and moisture, for example, a plate made of stainless steel.

[0095] In addition, a number of brackets may be arranged on the inner surface of the tub (20) for the purpose of supporting and installing functional components such as the storage section (50) and the injection section described later inside the tub (20).

[0096] Meanwhile, the driving unit (40) may be configured to include a sump (41) for storing washing water, a sump cover (42) for separating the sump (41) from the tub (20), a water supply unit (43) for supplying washing water from the outside to the sump (41), a drain unit (44) for discharging the washing water of the sump (41) to the outside, and a washing pump (45) and a supply path (46) for supplying the washing water of the sump (41) to the injection unit. The sump cover (42) is arranged on the upper side of the sump (41) and may serve to separate the tub (20) and the sump (41).

[0097] Additionally, the sump cover (42) may be provided with a plurality of recovery holes for recovering the washing water sprayed into the washing space (21) through the spray unit into the sump (41).

[0098] That is, the washing water sprayed from the spray unit toward the dishes falls to the lower part of the washing space (21) and can be returned to the sump (41) through the sump cover (42).

[0099] The washing pump (45) is provided on one side of the sump (41) and serves to pressurize washing water and supply it to the spray unit.

[0100] One end of the washing pump (45) may be connected to the sump (41) and the other end may be connected to the supply path (46). The washing pump (45) may be equipped with an impeller (451) and a motor (453). When power is supplied to the motor (453), the impeller (451) rotates, and the washing water in the sump (41) is pressurized and then supplied to the injection unit through the supply path (46).

[0101] Although not shown, the washing pump (45) may be equipped with a washing water heater to heat the washing water supplied during the washing cycle or the heated rinsing cycle.

[0102] Meanwhile, the supply path (46) can play a role in selectively supplying the washing water supplied from the washing pump (45) to the spray unit.

[0103] For example, the supply path (46) may include a first supply path (461) connected to the lower injection arm (61), a second supply path (463) connected to the upper injection arm (62) and the top nozzle (63), and the supply path (46) may be provided with a supply path switching valve (465) that selectively opens and closes the supply paths (461, 463).

[0104] At this time, the supply path switching valve (465) can be controlled so that each of the supply paths (461, 463) is opened sequentially or simultaneously.

[0105] Meanwhile, the spray unit is provided to spray washing water onto dishes, etc. stored in the storage unit (50).

[0106] More specifically, the spray unit may include a lower spray arm (61) located at the bottom of the tub (20) and spraying washing water to the lower rack (51), an upper spray arm (62) located between the lower rack (51) and the upper rack (52) and spraying washing water to the lower rack (51) and the upper rack (52), and a top nozzle (63) located at the top of the tub (20) and spraying washing water to the top rack (53) or the upper rack (52).

[0107] In particular, the lower spray arm (61) and the upper spray arm (62) are rotatably provided in the washing space (21) of the tub (20) so that they can spray washing water while rotating toward the dishes in the storage section (50).

[0108] The lower spray arm (61) can be rotatably supported on the upper side of the sump cover (42) so as to be able to spray washing water toward the lower rack (51) while rotating at the lower side of the lower rack (51).

[0109] Additionally, the upper spray arm (62) can be rotatably supported by the spray arm holder (467) so as to be able to spray the washing water while rotating between the lower rack (51) and the upper rack (52).

[0110] Meanwhile, although not shown, the lower surface (25) of the tub (20) may further be provided with a means for diverting the washing water sprayed from the lower spray arm (61) in an upward direction (U-direction) to increase the washing efficiency.

[0111] Since the detailed configuration of the injection unit is applicable to a configuration already known in the art, a description of the specific configuration of the injection unit is omitted below.

[0112] Meanwhile, a storage compartment (50) for storing dishes may be provided in the washing space (21).

[0113] The storage section (50) is provided so as to be withdrawable from the inside of the tub (20) through the open front surface of the tub (20).

[0114] By way of example, FIG. 2 illustrates an embodiment in which a storage compartment is provided, including a lower rack (51) located at the bottom of a tub (20) and capable of storing relatively large dishes, an upper rack (52) located above the lower rack (51) and capable of storing medium-sized dishes, and a top rack (53) located at the top of the tub (20) and capable of storing small dishes, etc. The present invention is not limited thereto, but will be described based on an embodiment of a dishwasher (1) provided with three storage compartments (50) as illustrated.

[0115] These lower racks (51), upper racks (52) and top racks (53) can each be configured to be pulled out through the open front face of the tub (20).

[0116] To this end, guide rails (54) may be provided on both sides of the wall forming the inner surface of the tub (20), and as described below, the guide rails (54) may include, for example, an upper rail (542), a lower rail (541), and a top rail (543).

[0117] Wheels may be provided at the bottom of each of the lower racks (51), upper racks (52), and top racks (53). Users can store dishes in these lower racks (51), upper racks (52), and top racks (53) by pulling them out through the front of the tub (20), or can easily take out washed dishes from them.

[0118] The guide rail (54) may be provided as a fixed guide rail in the form of a simple rail for guiding withdrawal and insertion of the storage unit (50) or as an elastic guide rail for guiding withdrawal and insertion of the storage unit (50) and increasing the withdrawal distance according to withdrawal of the storage unit (50).

[0119] Meanwhile, the door (30) has the purpose of opening and closing the open front surface of the above-described tub (20).

[0120] A hinge part (not shown) for opening and closing the door (30) is provided at the lower part of the front surface that is normally open, and the door (30) can be opened by rotating around the hinge part as a rotation axis.

[0121] Here, the outer surface of the door (30) may be provided with a handle (31) for opening the door (30) and a control panel (32) for controlling the operation of the dishwasher (1).

[0122] As illustrated, the control panel (32) may be equipped with a display (33) that visually displays information about the current operating status of the dishwasher (1), a button section (34) including a selection button for inputting a user's course selection operation, and a power button for inputting a user's operation for turning the dishwasher on and off.

[0123] Meanwhile, the rear panel (30b) forming the inner side of the door (30) can form one side of the tub (20) when the door (30) is closed and at the same time form a seating surface on which the lower rack (51) of the storage section (50) can be supported when the door (30) is fully opened.

[0124] For this purpose, when the door (30) is fully opened, it is preferable that the rear panel (30b) of the door (30) form a horizontal plane in the same direction as the direction in which the guide rail (54) along which the lower rack (51) is guided extends.

[0125] As shown in Fig. 3, a rear panel (30b) forming the inner side of the door (30) may further be provided with a detergent supply device (200) for automatically supplying detergent into the interior of the tub (20).

[0126] Additionally, a door position detection unit (36) may be provided on the outer side of the upper surface of the tub (20) to detect whether the door (30) is closed or open. For example, the door position detection unit (36) may include a door position sensor (S_d) or a latch sensor that detects the position of a door latch (not shown).

[0127] Meanwhile, a drying air supply unit (80) may be provided at the bottom of the tub (20) to generate and supply high-temperature or low-temperature drying air to the washing space inside the tub (20).

[0128] As shown, the drying air supply unit (80) may be configured to include a filter member (883) that filters outside air, a blower fan (825) that generates a drying air stream, a heater (84) that heats the drying air stream, and an air flow guide (83) that is placed inside the tub (20) and guides the drying air stream.

[0129] A drying air supply hole (254) may be provided on the lower surface (25) of the tub (20) so that high-temperature drying air generated from the drying air supply unit (80) can be introduced into the interior of the tub (20).

[0130] By supplying high-temperature drying air or low-temperature drying air through a drying air supply unit (80) like this into the interior of the tub (20) during the drying cycle (S5), the drying efficiency and sterilization effect on dishes can be significantly improved compared to the past.

[0131] Meanwhile, some of the air current supplied to the inside of the tub (20) and humidified while drying dishes may be discharged to the outside, and the remaining part may be configured to be sucked into the drying air supply unit (80). The discharge of the air current may be accomplished through partial opening of the door (30) or through a separate exhaust means not shown.

[0132] A duct section (811) for recovering wet air from the tub (20) may be provided on the outside of the left side (26) or the outside of the right side (27) of the tub (20).

[0133] Additionally, a lighting device may be further provided inside the tub (20) as a means for illuminating the washing space (21) by irradiating visible light.

[0134] The lighting device can be placed on at least one of the rear surface (23), upper surface (24), right surface (27) and left surface (26) forming the inner surface (20 in) of the tub (20) so as to effectively illuminate the washing space (21).

[0135] Through such a lighting device, even in a situation where the aforementioned storage unit (50) is not pulled out of the tub (20), the user can effectively check the storage status of the dishes placed in the storage unit (50) and the washing status of the dishes.

[0136] To minimize power consumption, the lighting device can be turned on and supplied with power only when the door (30) is confirmed to be open through the door position detection unit (36).

[0137] The detailed configuration of each embodiment of the lighting device is described below with reference to Fig. 4 and below.

[0138] [Detailed configuration of the lighting device according to the first embodiment]

[0139] Hereinafter, a lighting device (71) according to the first embodiment of the present invention will be described with reference to FIGS. 4 to 17.

[0140] First, referring to FIGS. 4 and 5, the lighting device (71) according to the first embodiment of the present invention can be arranged to be fixed to the rear surface (23) of the tub (20).

[0141] More specifically, as shown in FIG. 4, a water jacket (110) may be attached to the outer surface of the right side (27) of the tub (20) to store washing water to be supplied to the tub (20) and used when washing and rinsing dishes.

[0142] At this time, a tub hole (118) that connects the internal space of the water jacket (110) with the washing space (21) of the tub (20) may be formed, and a water jacket communication hole (272) may be formed penetrating through the right side (27) of the tub (20) corresponding to the tub hole (118). A grill cap (118a) having a similar shape to the grill cap (813) of the air intake hole (271) described above may be combined with the tub hole (118) to minimize the inflow of washing water and prevent the inflow of foreign substances.

[0143] In addition, as described above, a drying air supply unit (80) may be provided below the tub (20) to heat the air discharged from the tub (20) during the drying process and resupply it back to the tub (20).

[0144] As illustrated, the drying air supply unit (80) may include a suction duct (81) that sucks in air discharged from the tub (20), and the suction duct (81) may be arranged on the outside of the left side (26) or the outside of the right side (27) of the tub (20).

[0145] For example, FIG. 4 shows a configuration in which a suction duct (81) is arranged parallel to a water jacket (110) on the outer surface of the right side (27) of the tub (20).

[0146] Accordingly, an air intake hole (271) can be formed through the right side (27) of the tub (20), and a grill cap (8113) coupled to the inlet of the intake duct (81) can be fixed to the air intake hole (271).

[0147] However, this is merely an example, and the suction duct (81) may be configured to be placed on the outer surface of the left side (26) of the tub (20).

[0148] In this way, considering the positional constraints of the arrangement of the suction duct (81) and the water jacket (110) of the drying air supply unit (80), the lighting device (71) can be configured to be fixed to the inner surface (20 in) of the rear surface (23) of the tub (20) at a position that can minimize interference with the suction duct (81) and the water jacket (110) of the drying air supply unit (80).

[0149] Meanwhile, the lighting device (71) according to the first embodiment of the present invention may be provided in multiple pieces, and more specifically, as illustrated, may be provided as a pair each having the same size and appearance.

[0150] In this way, by configuring the lighting devices (71) to be provided in pairs, the number of lighting devices (71) can be minimized, and as described later, the number of openings (232) to be formed on the rear surface (23) of the tub (20) can be minimized.

[0151] At this time, a pair of lighting devices (71) can be placed at symmetrical positions in the left and right directions centered on the water guide forming the second supply path (463) described above.

[0152] As shown in Fig. 5, a bead forming portion (231) formed convexly toward the rear may be provided on the central side of the rear surface (23) of the tub (20) for installation of the second supply path (463).

[0153] The bead forming portion (231) can extend upward along the extension direction of the second supply path (463).

[0154] Therefore, in order to increase the lighting efficiency of the washing space of the tub (20) and minimize interference with the second supply path (463), a pair of lighting devices (71) can be spaced apart in the left and right direction with the bead forming part (231) in between.

[0155] Meanwhile, the lighting devices (71) provided as a pair can be formed to have the same shape and size, with only the positions where they are arranged being different.

[0156] Therefore, the following description will be based on the lighting device (71) placed on the left, and unless otherwise stated, the contents described below can be equally applied to the lighting device (71) placed on the right.

[0157] As illustrated in FIG. 5, the lighting device (71) according to the first embodiment of the present invention is configured to illuminate the interior of the tub (20) in a surface-emitting manner.

[0158] At this time, the light-emitting surface (71a) of the lighting device (71) can be arranged parallel to the rear surface (23) of the tub (20) so as to effectively illuminate the interior of the tub (20).

[0159] The light-emitting surface (71a) of the lighting device (71) may be provided in a square shape, and more specifically, may be provided in a rectangular shape in which the vertical width is greater than the left-right width.

[0160] At this time, as shown in FIG. 5, the upper end (71a1) of the light-emitting surface (71a) having a rectangular shape can be positioned so as to be placed between the top rail (543) and the upper rail (542) in the vertical direction, and preferably, can be positioned closer to the top rail (543) than to the upper rail (542).

[0161] Accordingly, the upper end (71a1) of the light-emitting surface (71a) can be positioned between the lower end of the top rack (53) that is retractably supported by the top rail (543) and the upper end of the upper rack (52) that is retractably supported by the upper rail (542).

[0162] In addition, the lower end (71a2) of the light-emitting surface (71a) having a rectangular shape can be positioned so as to be placed between the upper rail (542) and the lower rail (541) in the vertical direction, and preferably, can be positioned closer to the upper rail (542) than to the lower rail (541).

[0163] Accordingly, the lower end (71a2) of the light-emitting surface (71a) can be positioned higher than the upper end of the lower rack (51) that is retractably supported on the lower rail (541) or at a position almost identical to the upper end of the lower rack (51).

[0164] Through this, the portion of the light-emitting surface (71a) that is covered by the upper rack (52) and the lower rack (51) can be minimized, and visible light can be evenly irradiated to the dishes placed on the top rack (53), the upper rack (52), and the lower rack (51), thereby preventing a decrease in light-emitting efficiency.

[0165] In addition, by setting the positions of the upper part (71a1) and the lower part (71a2) of the light-emitting surface (71a) in this way, the open area of ​​the opening (232) of the tub (20) that must be formed on the rear side of the light-emitting surface (71a) can be significantly reduced compared to the conventional case.

[0166] That is, the open area of ​​the opening (232) can be maintained at a level of 50% or less compared to the total area of ​​the rear surface (23) of the tub (20), which is significantly lower than in the past.

[0167] In addition, as illustrated in FIG. 5, the light emitting surface (71a) may be arranged on the rear surface (23) of the tub (20) so that the vertical gap (DH1) between the upper end (71a1) of the light emitting surface (71a) and the upper surface (24) of the tub (20) is formed smaller than the vertical gap (DH2) between the lower end (71a2) of the light emitting surface (71a) and the lower surface (25) of the tub (20). That is, the light emitting surface (71a) of the lighting device (71) according to the first embodiment of the present invention may be arranged to be biased so as to be closer to the upper surface (24) than to the lower surface (25) of the tub (20).

[0168] As illustrated, the upper surface (24) and the lower surface (25) of the tub (20) can be configured to have a three-dimensional shape. Accordingly, the vertical gap (DH1) between the upper end (71a1) of the light-emitting surface (71a) and the upper end (24) of the tub (20) and the vertical gap (DH2) between the lower end (71a2) of the light-emitting surface (71a) and the lower end (25) of the tub (20) may locally deviate. However, despite the occurrence of such deviation, the range of the vertical gap (DH1) between the upper end (71a1) of the light-emitting surface (71a) and the upper end (24) of the tub (20) and the range of the vertical gap (DH2) between the lower end (71a2) of the light-emitting surface (71a) and the lower end (25) of the tub (20) may be formed smaller.

[0169] As the light-emitting surface (71a) of the lighting device (71) is positioned more biased toward the upper surface (24) of the tub (20), the shadows of the dishes that can be created by the light-emitting surface (71a) having a large area can be minimized, and the effect of more uniformly illuminating the various dishes stored in the storage unit (50) can be achieved.

[0170] Meanwhile, the lighting device (71) according to the first embodiment can be placed in the tub (20) across the inside and outside of the tub (20) by passing through the opening (232) of the tub (20) as described later.

[0171] For example, referring to FIG. 7, the inner surface (20 in) of the rear surface (23) of the tub (20) facing the bracket body (2331) can define a reference plane (20ref) that extends along the inner surface (20 in) of the rear surface (23) and provides a reference position for the arrangement of various components of the lighting device (71). For example, as illustrated in FIG. 7, the reference plane (20ref) extending along the inner surface (20 in) of the rear surface (23) can at least partially pass through at least a portion of the lighting device (71) (i.e., the diffuser plate (714)), and some components of the lighting device (71) (i.e., the front cover (711)) can be arranged relatively inward with respect to the reference plane (20ref) toward the washing space, and other components (i.e., the light guide plate (716), the light source element (7172)) can be arranged relatively outward with respect to the reference plane (20ref).

[0172] Meanwhile, as in the embodiment illustrated in FIG. 19, the lighting device (71) may be disposed entirely within the washing space, and the reference plane (20ref) extending along the inner surface (20 in) of the rear surface (23) may be disposed relatively externally with respect to the entire lighting device (71). Meanwhile, as in the embodiment illustrated in FIG. 23, the lighting device (71) may be disposed entirely on the front side with respect to the inner surface (20 in) of the rear surface (23), and the reference plane (20ref) extending along the inner surface (20 in) of the rear surface (23) may be disposed externally with respect to the lighting device (71). That is, by configuring the light source unit (717) corresponding to the electrical component to be disposed outside the tub (20), the possibility of the light source unit (717) being damaged by the washing water may be minimized.

[0173] In addition, by configuring that only a part of the components of the lighting device (71) are placed inside the tub (20), the volume occupied by the lighting device (71) in the washing space (21) of the tub (20) in the front-back direction and the front-back width of the lighting device (71) can be minimized.

[0174] Hereinafter, referring to FIGS. 6 and 7, the detailed configuration of the lighting device (71) partially placed inside the tub (20) according to the first embodiment of the present invention will be described.

[0175] As illustrated in FIGS. 6 and 7, a lighting device (71) according to the first embodiment of the present invention may be configured to include a light source unit (717) that generates visible light, a light guide plate (716) that converts a path of movement of visible light generated from the light source unit (717), a mid-case (715) that accommodates and supports the light source unit (717) and the light guide plate (716), a rear cover (718) that is coupled to the rear of the mid-case (715), a diffusion plate (714) that forms a light-emitting surface (71a), and a front cover (711) that secures the diffusion plate (714) to the rear surface (23) of the tub (20).

[0176] The light source (717) is placed outside the tub (20) and serves to generate visible light by receiving external power.

[0177] That is, as illustrated in FIG. 7, the light source unit (717) corresponding to the electric component can be configured to be supported and fixed by the mid-case (715) at a position spaced rearward from the outer surface (20out) of the rear surface (23) of the tub (20) on the outside of the tub (20) so that the influence of the washing water can be minimized.

[0178] For example, the light source unit (717) may be configured to include at least one light source element (7172) and a circuit board (7171) on which at least one light source element (7172) is mounted.

[0179] The light source element (7172) can be applied without limitation as long as it is a means that can receive power and generate a predetermined amount of visible light, and can be an LED element as an example.

[0180] The present invention is not limited thereto, but will be described below based on an embodiment in which an LED element is applied as a light source element (7172).

[0181] As illustrated, in order to minimize the front-back size of the lighting device (71) and the number of light source elements (7172), visible light generated from the light source elements (7172) may be configured to be introduced through one edge of the light guide plate (716) and enter the interior of the light guide plate (716).

[0182] FIGS. 6 and 7 illustrate a configuration in which a circuit board (7171) and a light source element (7172) are arranged parallel to the lower edge of the light guide plate (716) so that the light source element (7172) can irradiate visible light toward the lower edge of the light guide plate (716).

[0183] However, the present invention is not limited thereto, and the circuit board (7171) and the light source element (7172) may be configured to be arranged parallel to the upper edge or the left and right edges of the light guide plate (716). Hereinafter, as an example, a configuration in which the circuit board (7171) and the light source element (7172) are arranged parallel to the lower edge of the light guide plate (716) will be described.

[0184] In this way, when the circuit board (7171) and the light source element (7172) are arranged parallel to the lower edge of the light guide plate (716), the width in the front-back direction of the circuit board (7171) can be formed to be much smaller than the width in the left-right direction. In other words, the left-right direction can be the longitudinal direction of the circuit board (7171).

[0185] At this time, as illustrated in FIG. 7, the front-to-back width of the circuit board (7171) can be formed to be smaller than or equal to the front-to-back thickness of the light guide plate (716) so that the front-to-back width of the lighting device (71) can be minimized.

[0186] A plurality of light source elements (7172) may be arranged along the length direction of the circuit board (7171), i.e., along the left-right direction, so that visible light can be evenly projected through the lower edge of the light guide plate (716). The left-right spacing between each light source element (7172) may be set to be maintained approximately constant and even.

[0187] The light guide plate (716) is placed outside the tub (20) together with the light source unit (717) and serves to convert the path of visible light generated from the light source element (7172) toward the diffusion plate (714) placed in front.

[0188] As described above, visible light generated from the light source element (7172) can be introduced into the interior through the lower edge of the light guide plate (716), and the visible light introduced into the interior can be reflected and dispersed, and its direction of movement can be changed to be directed toward the front surface arranged parallel to the rear surface of the diffusion plate (714) described later.

[0189] Except for the front surface of the light guide plate (716), the remaining rear surface, upper edge, and left and right edges are blocked from transmitting visible light by the mid-case (715) and rear cover (718) described later, so a state in which visible light cannot pass can be formed, and visible light can be irradiated to the outside of the light guide plate (716) only through the front surface of the light guide plate (716).

[0190] The mid-case (715) accommodates the light source (717) and the light guide plate (716) at a position spaced rearward from the outer surface (20out) of the rear surface (23) of the tub (20) and serves to fix them to the tub (20).

[0191] To this end, as illustrated in FIG. 7, the mid-case (715) may be provided with a case body (7151) that is fixedly attached to the tub (20) and a guide rib (7152) that protrudes toward the rear from the case body (7151).

[0192] The case body (7151) may be provided in a frame shape extending along the edge of the opening (232) of the tub (20). The inner area of ​​the case body (7151) is open in the front-rear direction so that visible light irradiated from the front surface of the light guide plate (716) arranged at the rear can pass through.

[0193] At this time, in order to prevent the front of the light guide plate (716) from being dislodged, the open area of ​​the open area of ​​the case body (7151) may be formed to be smaller than the area of ​​the front surface of the light guide plate (716).

[0194] Meanwhile, a front step surface that is formed concavely toward the rear while progressing toward the open area can be formed on the front side of the case body (7151).

[0195] The front step surface formed concavely in this way can form a first receiving space (715b) into which the support rib (7112) and diffuser plate (714) of the front cover (711) described later are inserted.

[0196] As described below, a predetermined gap can be formed between the front step surface of the case body (7151) and the support rib (7112) of the front cover (711), and a bending portion (2321) defining the edge of the opening (232) of the tub (20) can be inserted into the predetermined gap.

[0197] The guide rib (7152) is integrally formed on the rear surface of the case body (7151) and serves to form a second receiving space (715a) in which the aforementioned light source unit (717) and light guide plate (716) can be received.

[0198] To this end, the guide rib (7152) may be provided in the shape of a barrier extending parallel to the outer edge of the light guide plate (716) along the outer edge of the light guide plate (716) on the rear surface of the case body (7151).

[0199] Accordingly, a second receiving space (715a) can be formed in which the rear surface is entirely open and the front surface is partially open by the guide rib (7152).

[0200] In this case, in order to prevent the light guide plate (716) and the light source unit (717) from being dislodged forward, the open area of ​​the front surface of the second receiving space (715a) may be formed to be smaller than the area of ​​the front surface of the light guide plate (716), as shown.

[0201] In addition, so that the arrangement of the light guide plate (716) and the light source unit (717) can be easily achieved, the open area of ​​the rear surface of the second receiving space (715a) can be formed larger than that of the light guide plate (716).

[0202] Meanwhile, the mid case (715) can be detachably connected to the tub (20) in a non-adhesive manner by a rear bracket (233) that is fixed to the outer surface (20out) of the rear surface (23) of the tub (20) as described later.

[0203] The detailed configuration of the rear bracket (233) will be described later with reference to FIGS. 12 to 16.

[0204] In addition, as described later, the mid case (715) placed on the outside of the tub (20) can be fixed to the tub (20) by the rear bracket (233) in a mutually unfastened state with respect to the front cover (711) placed on the inside of the tub (20).

[0205] Accordingly, a fastening hole through which a mutual fastening means or a mutual coupling means for mutually fastening a component placed inside the tub (20) and a component placed outside the tub (20) must pass, as in the past, can be omitted from the rear surface (23) of the tub (20). Accordingly, the lighting device (71) according to the first embodiment of the present invention can fundamentally block the possibility of water leakage through the fastening hole, and the manufacturing cost and manufacturing time can be significantly reduced compared to the past.

[0206] The rear cover (718) is coupled to the rear of the second receiving space (715a) of the mid-case (715) in which the light guide plate (716) and the light source unit (717) are received, and serves to close the rear surface of the second receiving space (715a) to protect the light guide plate (716) and the light source unit (717).

[0207] To this end, the rear cover (718) may have a box shape in which the front side is open, but the remaining part except for the front side is generally closed.

[0208] As described above, in order to increase lighting efficiency by allowing visible light generated from the light source (717) to be transmitted to the diffusion plate (714) only through the front surface of the light guide plate (716), the rear cover (718) may be made of an opaque material that does not allow visible light to pass through.

[0209] The diffusion plate (714) forms a light-emitting surface (71a) and serves to evenly diffuse visible light introduced through the light guide plate (716) and the opening (232) of the tub (20) toward the light-emitting surface (71a).

[0210] At this time, as shown in FIG. 7, the diffuser plate (714) can be supported by the front cover (711) so as to be placed in a state in which it is entirely inserted into the opening (232) of the tub (20).

[0211] That is, the opening (232) of the tub (20) can be formed in a state in which it is at least partially closed by the diffusion plate (714).

[0212] Therefore, the outer edge of the diffuser (714) may have a shape corresponding to the edge of the opening (232) of the tub (20).

[0213] However, since the support rib (7112) of the front cover (711) is formed between the edge of the opening (232) of the tub (20) and the outer edge of the diffuser plate (714), the vertical cross-sectional area of ​​the diffuser plate (714) can be formed to be smaller than the open area of ​​the opening (232) of the tub (20).

[0214] Meanwhile, in FIG. 7 and below, the diffuser plate (714) is arranged in a state where no step is formed between the front surface of the diffuser plate (714) and the rear surface (23) of the tub (20), but this is merely exemplary, and depending on the thickness of the diffuser plate (714), the front surface of the diffuser plate (714) may be arranged so that a step is formed in such a way that it protrudes further forward than the rear surface (23) of the tub (20) or is arranged further rearward than the rear surface (23) of the tub (20).

[0215] As described below, the diffuser plate (714) can be indirectly fixed to the rear surface (23) of the tub (20) in a manner that it is attached and fixed to the front cover (711) by the second sealing member (713).

[0216] Meanwhile, the front cover (711) is placed inside the tub (20) to support the diffuser plate (714) so ​​that the diffuser plate (714) can effectively illuminate the washing space (21) of the tub (20), and serves to indirectly secure the diffuser plate (714) to the rear surface (23) of the tub (20).

[0217] In order for the diffuser plate (714) to effectively illuminate the washing space (21) of the tub (20), the front cover (711) may include a cover body (7111) formed in a frame shape with an open area (711a) formed on the central inner side.

[0218] The open area of ​​the open region (711a) of the cover body (7111) determines the area of ​​the light-emitting surface (71a).

[0219] That is, the inner edges of the front cover (711) having a frame shape define the upper end (71a1), lower end (71a2), left end (71a3), and right end (71a4) of the light-emitting surface (71a).

[0220] At this time, as shown in Fig. 7, the cover body (7111) can be attached to the rear surface (23) of the tub (20) in a surface contact state so that it can be placed entirely inside the tub (20).

[0221] More specifically, among the rear surfaces of the cover body (7111), the rear surface portion formed between the support rib (7112) and the outer edge of the cover body (7111) can be formed parallel to the rear surface (23) of the tub (20), and in this way, the rear surface portion formed between the support rib (7112) and the outer edge of the cover body (7111) can be attached in a surface contact state to the rear surface of the tub (20).

[0222] At this time, the cover body (7111) can be attached to the inner surface (20 in) of the rear surface (23) of the tub (20) using the first sealing member (712).

[0223] That is, as illustrated in FIG. 6, the first sealing member (712) extends in a form that surrounds the inner edge of the cover body (7111) and may be provided in the form of an elastic ring having a predetermined elasticity.

[0224] At this time, the first sealing member (712) may be configured to include a predetermined adhesive component.

[0225] Accordingly, the cover body (7111) can be adhered to the rear surface of the tub (20) in such a way that the first sealing member (712) is compressed between the rear surface of the cover body (7111) and the rear surface (23) of the tub (20).

[0226] Since the first sealing member (712) undergoes elastic deformation simultaneously with compression, the space between the cover body (7111) and the rear surface (23) of the tub (20) can be effectively sealed.

[0227] That is, the first sealing member (712) can simultaneously perform an adhesive function for attaching the cover body (7111) to the tub (20) and a sealing function for preventing water leakage between the cover body (7111) and the rear surface (23) of the tub (20).

[0228] Accordingly, it is possible to omit the fastening means for fixing the cover body (7111) to the tub (20) as in the past, such as screw bolts or rivets, and the fastening hole through which the fastening means passes.

[0229] Meanwhile, at the position where the first sealing member (712) is positioned as the rear surface of the front cover (711) facing the inner surface (20 in) of the rear surface (23) of the tub (20), a first groove (7111b) that is concavely formed toward the washing space (21) of the tub (20) may be provided, as shown.

[0230] As illustrated, the first groove (7111b) may have a cross-section in the shape of an arc with a predetermined curvature.

[0231] A protruding surface (234) may be formed on the rear surface (23) of the tub (20) to protrude forward so as to be inserted into the first sealing member (712) at a position corresponding to the first groove (7111b).

[0232] The protruding surface (234) can be formed by plastically deforming a portion of the rear surface (23) of the tub (20) through press processing.

[0233] In this way, the contact area and adhesive area between the cover body (7111) and the rear surface (23) of the tub (20) can be expanded through the first groove (7111b) of the cover body (7111) and the protruding surface (234) of the tub (20), and the adhesive performance and sealing performance between them through the first sealing member (712) can be further improved.

[0234] Meanwhile, since the protruding surface (234) is formed by plastically deforming a portion of the rear surface (23) of the tub (20) along the perimeter of the opening (232) in a bead-forming manner, it can also serve to reinforce the rear surface (23) of the tub (20) whose rigidity has been weakened by the formation of the opening (232). The detailed configuration of the protruding surface (234) will be described later with reference to FIG. 9.

[0235] Meanwhile, in order for the front cover (711) to indirectly fix the diffusion plate (714) to the rear surface (23) of the tub (20), a support rib (7112) that protrudes toward the rear may be integrally provided on the rear of the cover body (7111).

[0236] The support rib (7112) may be provided in the shape of a barrier extending parallel to the outer edge of the diffuser plate (714) along the outer edge of the diffuser plate (714).

[0237] As shown in FIG. 7, the inner surface of the support rib (7112) is in surface contact with the outer edge surface of the diffuser plate (714), so that the diffuser plate (714) can be supported by the support rib (7112).

[0238] Additionally, the diffuser plate (714) can be fixed to the rear surface (23) of the tub (20) while being attached to the cover body (7111).

[0239] The diffuser plate (714) can be attached to the cover body (7111) using the second sealing member (713).

[0240] Like the first sealing member (712), the second sealing member (713) extends in a form that surrounds the inner edge of the cover body (7111) and may be provided in the form of an elastic ring having a predetermined elasticity.

[0241] At this time, the second sealing member (713) may be configured to include a predetermined adhesive component.

[0242] Accordingly, the diffuser plate (714) can be adhered to the rear surface of the cover body (7111) in such a way that the second sealing member (713) is pressed between the rear surface of the cover body (7111) and the front surface of the diffuser plate (714).

[0243] Since the second sealing member (713) undergoes elastic deformation simultaneously with compression, the space between the rear surface of the cover body (7111) and the front surface of the diffuser plate (714) can be effectively sealed.

[0244] That is, like the first sealing member (712), the second sealing member (713) can simultaneously perform an adhesive function for attaching the diffusion plate (714) to the cover body (7111) and a sealing function for preventing water leakage between the cover body (7111) and the diffusion plate (714).

[0245] Meanwhile, at the position where the second sealing member (713) is positioned as the rear surface of the cover body (7111) facing the front surface of the diffusion plate (714), a second groove (7111a) formed concavely toward the washing space (21) of the tub (20) may be provided, as shown.

[0246] The depth of the second groove (7111a) can be formed smaller than the thickness of the second sealing member (713) before deformation. Accordingly, when the diffusion plate (714) is attached to the cover body (7111), the second sealing member (713) is compressed and elastically deformed. As the elastically deformed second sealing member (713) fills the empty space of the second groove (7111a), the bonding area and sealing area between the cover body (7111) and the diffusion plate (714) can be expanded by the width of the second groove (7111a).

[0247] [Detailed configuration of the lighting device according to the first embodiment]

[0248] Referring to FIGS. 8 to 13 below, the process of attaching a lighting device (71) according to the first embodiment of the present invention to the rear surface (23) of the tub (20) will be described.

[0249] As described above, the lighting device (71) according to the first embodiment of the present invention is configured such that only some of the components of the lighting device (71) are placed inside the tub (20), and the remaining components are placed outside the tub (20).

[0250] Therefore, considering the convenience of fastening or assembly, the lighting device (71) according to the first embodiment of the present invention can be configured so that the components arranged inside the tub (20) are fastened and assembled to the tub (20) inside the tub (20), and the components arranged outside the tub (20) are fastened and assembled outside the tub (20).

[0251] Among these, the components placed inside the tub (20) may be a front cover (711) and a diffuser plate (714).

[0252] In FIG. 8, the process of fastening and assembling the front cover (711) and the diffuser plate (714) arranged across the inside and outside of the tub (20) to the rear surface (23) of the tub (20) from the inside of the tub (20) is illustrated.

[0253] Referring to FIG. 8, the front cover (711) and the diffuser plate (714) can be pre-assembled to form a partial assembly before being fastened to the tub (20).

[0254] That is, as described above, the cover body (7111) and the diffuser plate (714) of the front cover (711) can be formed as a partial assembly while being attached to each other by the second sealing member (713).

[0255] A partial assembly with a diffuser plate (714) attached to the front cover (711) can be introduced into the interior of the tub (20) through the front surface (22) of the tub (20).

[0256] As illustrated, the support rib (7112) of the front cover (711) can be configured to have an outer shape and size corresponding to the shape and size of the opening (232) of the tub (20).

[0257] Accordingly, the front cover (711) and the diffuser plate (714) can be joined to the rear surface (23) of the tub (20) by moving the partial assembly with the diffuser plate (714) attached to the front cover (711) into the interior of the tub (20) and then inserting the support rib (7112) into the opening (232) from the front of the opening (232).

[0258] At this time, as shown, since the edge of the opening (232) is integrally formed with a bending portion (2321) that is bent toward the rear, the insertion movement direction of the front cover (711) and the diffuser plate (714) can be guided.

[0259] That is, the bending portion (2321) formed in the support rib (7112) and the opening (232) can serve as a fastening guide that guides the assembly position and insertion movement of the front cover (711) and the diffuser plate (714).

[0260] In this way, since the assembly position and insertion movement of the front cover (711) and the diffuser plate (714) can be smoothly guided, the front cover (711) and the diffuser plate (714) can be fastened or assembled to the rear surface (23) of the tub (20) by simply pressing or pressing the front cover (711) and the diffuser plate (714) toward the rear surface (23) of the tub (20).

[0261] Meanwhile, as illustrated in FIG. 10, before the front cover (711) and the diffuser plate (714) are assembled to the rear surface (23) of the tub (20), the first sealing member (712) described above may be attached in advance to either the first groove (7111b) of the cover body (7111) or the protruding surface (234) of the rear surface (23) of the tub (20).

[0262] At this time, as shown in Fig. 9, a number of through holes (234h) that connect the front and rear directions can be additionally formed on the protruding surface (234) of the tub (20).

[0263] A plurality of through holes (234h) can be arranged at equal intervals along the protruding surface (234).

[0264] Accordingly, when the first sealing member (712) is compressed, a portion of the first sealing member (712) can pass through the plurality of through holes (234h) and be pushed out toward the rear of the protruding surface (234).

[0265] Accordingly, the bonding area and sealing area of ​​the first sealing member (712) can be expanded toward the rear side of the protruding surface (234) through a plurality of through holes (234h).

[0266] Through this process, as shown in FIG. 11, when the front cover (711) and the diffuser plate (714) placed inside the tub (20) are fastened and assembled to the rear surface (23) of the tub (20) from the inside of the tub (20), the components placed outside the tub (20) can be configured to be fastened and assembled from the outside of the rear surface (23) of the tub (20).

[0267] Components placed on the outside of the tub (20) may be a light source unit (717), a light guide plate (716), a mid-case (715), and a rear cover (718), which are the remaining parts except for the front cover (711) and the diffusion plate (714).

[0268] Similar to the front cover (711) and the diffuser plate (714), the light source unit (717), the light guide plate (716), the mid-case (715) and the rear cover (718) can be pre-assembled to form a partial assembly as shown in FIG. 12 before being fastened to the tub (20).

[0269] The subassembly composed of a light source (717), a light guide plate (716), a mid-case (715), and a rear cover (718) can be fitted to the outer surface (20out) of the rear surface (23) of the tub (20) by simply horizontally moving from the outer rear of the tub (20) toward the outer surface (20out) of the rear surface (23) of the tub (20), as illustrated in FIG. 12.

[0270] As a configuration for forming such a simple fitting joint, a rear bracket (233) that is arranged around the opening (232) of the tub (20) and fixes a partial assembly including a mid-case (715) to the tub (20) can be provided on the outer surface (20out) of the rear surface (23) of the tub (20).

[0271] As shown in FIGS. 12 and 13, the rear bracket (233) may include a bracket body (2331) that extends along the periphery of the opening (232) of the tub (20) and is fixed to the outer surface (20out) of the rear surface (23) of the tub (20), and a plurality of fixed parts (2332) that have one end integrally connected to the bracket body (2331) and the other end extending toward the opening (232) of the tub (20) and being free ends.

[0272] The bracket body (2331) can be linearly extended along the edge of the opening (232) to have a substantially constant width in a form that wraps around the opening (232) of the tub (20).

[0273] The bracket body (2331) can be attached and fixed in a state of surface contact with the outer surface (20out) of the rear surface (23) of the tub (20), and preferably can be firmly attached to the outer surface (20out) of the rear surface (23) of the tub (20) through welding.

[0274] Accordingly, the effect of reinforcing the rigidity around the opening (232) of the tub (20) by the welded bracket body (2331) can be added.

[0275] The plurality of fixed parts (2332) serve to elastically connect the outer edges of the mid-case (715) and elastically support the mid-case (715).

[0276] Since each of the plurality of fixed parts (2332) is configured with a free end extending toward the opening (232) of the tub (20), it can act as a spring that elastically supports the outer edge of the mid-case (715).

[0277] In order to be able to function as a spring, each fixed portion (2332) may have a cross-sectional shape folded into two stages, including a first horizontal surface portion that is maintained at a constant vertical distance from the opening (232) of the tub (20), a first inclined surface portion that is formed continuously from the first horizontal surface portion and is bent in a direction approaching the opening (232) of the tub (20), a second horizontal surface portion that is formed continuously from the first inclined surface portion and is maintained at a constant vertical distance from the opening (232) of the tub (20), and a second inclined surface portion that is formed continuously from the second horizontal surface portion and is bent in a direction away from the opening (232) of the tub (20).

[0278] At this time, the vertical width and the left-right width formed between the second horizontal surfaces of each fixed part (2332) can be formed smaller than the vertical width and the left-right width of the mid-case (715).

[0279] Accordingly, when the subassembly composed of the light source unit (717), the light guide plate (716), the mid-case (715), and the rear cover (718) is arranged in parallel on the rear surface (23) of the tub (20) and horizontal movement is initiated, the outer edge of the mid-case (715) first comes into contact with the second inclined surface of the fixed portion (2332).

[0280] When the light source part (717), the light guide plate (716), the mid-case (715) and the rear cover (718) are pushed forward while the outer edge of the mid-case (715) is in contact with the second inclined part of the fixing part (2332), the width between the second horizontal surfaces of each fixing part (2332) is elastically deformed by the width of the mid-case (715).

[0281] When the subassembly is moved through the section between the second horizontal planes, the elastic force of the fixed part (2332) to return to its original shape as it passes through the section between the first inclined planes acts on the outer edge of the mid-case (715).

[0282] By the elasticity of the fixing member (2332), the sub-assembly including the mid-case (715) is pressed against the outer surface (20out) of the rear surface (23) of the tub (20), and at the same time, the detachment of the sub-assembly including the mid-case (715) can be prevented.

[0283] This is explained in more detail with reference to FIGS. 14 and 15.

[0284] Referring to FIGS. 14 and 15, the rear brackets (233) can be arranged in pairs so that the arrangement is based on a vertical line passing through the opening (232) of the tub (20).

[0285] By dividing and arranging them in pairs to have a symmetrical shape like this, the manufacturing cost for the rear bracket (233) can be significantly reduced.

[0286] Meanwhile, the plurality of fixing parts (2332) constituting the rear bracket (233) may include a pair of first fixing parts (2332a) arranged at positions spaced apart in the vertical direction with the mid-case (715) interposed therebetween, and a pair of second fixing parts (2332b) arranged at positions spaced apart in the left-right direction with the mid-case (715) interposed therebetween.

[0287] Although FIGS. 14 and 15 illustrate a configuration in which a total of two pairs of first fixing parts (2332a) and a total of three pairs of second fixing parts (2332b) are integrally provided in the bracket body (2331), this is merely exemplary, and the number of first fixing parts (2332a) and second fixing parts (2332b) can be adjusted according to the size of the light-emitting surface (71a) of the lighting device (71) and the size of the opening (232) of the tub (20). For convenience, the following description will be based on a configuration in which a total of two pairs of first fixing parts (2332a) and a total of three pairs of second fixing parts (2332b) are provided.

[0288] As described above, the vertical distance between a pair of first fixing parts (2332a) that are arranged opposite each other by the two-stage folded cross-sectional shape of each fixing part (2332) can be configured to vary as it progresses toward the bracket body (2331).

[0289] At this time, the minimum vertical gap between a pair of first fixing parts (2332a) that are positioned oppositely can be formed between the second horizontal planes of a pair of first fixing parts (2332a) that are positioned oppositely, and the minimum vertical gap between a pair of first fixing parts (2332a) that are positioned oppositely can be formed to be smaller than the vertical width of the mid-case (715).

[0290] In addition, the maximum vertical distance between a pair of first fixing parts (2332a) that are positioned oppositely can be formed between the first horizontal surfaces of the pair of first fixing parts (2332a) that are positioned oppositely, and the maximum vertical distance between a pair of first fixing parts (2332a) that are positioned oppositely can be formed to be greater than or equal to the vertical width of the mid-case (715).

[0291] Likewise, the left-right distance between a pair of second fixing parts (2332b) that are arranged opposite each other by the two-stage folded cross-sectional shape of each fixing part (2332) can be configured to vary as it progresses toward the bracket body (2331).

[0292] At this time, the minimum left-right distance between a pair of second fixing parts (2332b) that are positioned oppositely can be formed between the second horizontal planes of a pair of second fixing parts (2332b) that are positioned oppositely, and the minimum left-right distance between a pair of second fixing parts (2332b) that are positioned oppositely can be formed to be smaller than the left-right width of the mid-case (715).

[0293] In addition, the maximum left-right distance between a pair of second fixing parts (2332b) that are positioned oppositely can be formed between the first horizontal planes of a pair of second fixing parts (2332b) that are positioned oppositely, and the maximum left-right distance between a pair of second fixing parts (2332b) that are positioned oppositely can be formed to be greater than or equal to the left-right width of the mid-case (715).

[0294] By limiting the relative sizes of the first fixing part (2332a) and the second fixing part (2332b) constituting the rear bracket (233) with respect to the mid-case (715), the sub-assembly including the mid-case (715) can be removably and elastically fixed to the rear surface (23) of the tub (20) in a non-adhesive manner.

[0295] [Arrangement structure of the light source part of the lighting device according to the first embodiment]

[0296] Referring to FIGS. 16 and 17 below, the arrangement structure of the light source unit (717) constituting the lighting device (71) according to the first embodiment of the present invention will be described.

[0297] First, referring to FIG. 16, a configuration is illustrated in which a circuit board (7171) and a light source element (7172) constituting a light source unit (717) are arranged parallel to the lower edge of the light guide plate (716) and the lower end of the light emitting surface (71a) so that the light source element (7172) can irradiate visible light toward the lower edge of the light guide plate (716).

[0298] In this way, by arranging the light source unit (717) parallel to the lower edge of the light guide plate (716) and the lower end of the light emitting surface (71a), a predetermined gradation or a moving motion of a predetermined shade in which the brightness gradually changes in the left-right direction can be formed on the light emitting surface (71a).

[0299] In this way, the movement motion of the gradient or shade formed along the left-right direction on the light-emitting surface (71a) can be implemented by differently controlling the amount of light output from each light source element (7172) arranged along the length direction of the circuit board (7171) on the circuit board (7171), turning on some light source elements (7172) and turning off some light source elements (7172), or sequentially outputting different amounts of light or sequentially turning off these light source elements (7172).

[0300] However, this is merely an example, and the light source unit (717) may be arranged along the upper edge of the light guide plate (716) parallel to the upper edge of the light guide plate (716) so that a left-right gradient or shading movement motion can be formed, or the light source unit (717) may be arranged for both the upper edge and the lower edge of the light guide plate (716), which will naturally fall within the scope of the present invention.

[0301] Meanwhile, as illustrated in FIG. 17, the circuit board (7171) and the light source element (7172) constituting the light source unit (717) may be arranged parallel to the left and right edges of the light guide plate (716) and the left and right ends of the light emitting surface (71a) so that the light source element (7172) can irradiate visible light toward the left edge or right edge of the light guide plate (716).

[0302] In this way, by arranging the light source unit (717) parallel to the left and right edges of the light guide plate (716) and the left and right ends of the light emitting surface (71a), a gradient or shading movement motion can be formed along the up and down direction on the light emitting surface (71a).

[0303] As described above, the moving motion of the gradient or shade formed along the up-and-down direction on the light-emitting surface (71a) can be implemented by differently controlling the amount of light output from each light source element (7172) arranged along the length direction of the circuit board (7171) on the circuit board (7171), turning on some light source elements (7172) and turning off some light source elements (7172), or sequentially outputting different amounts of light or sequentially turning off these light source elements (7172).

[0304] [Detailed configuration of the lighting device according to the second embodiment]

[0305] Hereinafter, a lighting device (72) according to a second embodiment of the present invention will be described with reference to FIGS. 18 to 21.

[0306] First, referring to FIG. 18, unlike the first embodiment described above, the lighting device (72) according to the second embodiment of the present invention is arranged to be fixed to the rear surface (23) of the tub (20), but may be configured to be arranged entirely within the tub (20).

[0307] That is, unlike the first embodiment described above, the lighting device (72) according to the second embodiment can be placed inside the tub (20) up to the light source unit (727) corresponding to the electric component.

[0308] Accordingly, as described later, only an opening (232) having an open area large enough to allow an extension pipe (7282) to pass through for extending the terminal portion (7271b) of the light source portion (727) to the outside of the tub (20) so that power can be supplied to the light source portion (727) is formed on the rear surface (23) of the tub (20), and accordingly, the open area of ​​the opening (232) can be significantly reduced compared to the first embodiment, and the possibility of the rigidity of the tub (20) being lowered and the possibility of water leakage occurring through the opening (232) can be significantly reduced.

[0309] Figures 19 and 21 illustrate detailed configurations of a lighting device (72) according to the second embodiment.

[0310] Referring to FIGS. 19 to 21, a lighting device (72) according to a second embodiment of the present invention may be configured to include a light source unit (727) that generates visible light, a diffusion plate (726) that converts the movement path of the visible light generated from the light source unit (727) toward the inside of the tub (20) and forms a light-emitting surface (72a), an upper bracket (722) that supports and protects the light source unit (727), a lower bracket (723) that is coupled to the outer edge of the diffusion plate (726) to support and protect the diffusion plate (726), and a cover (721, 728) that accommodates the light source unit (727) therein and is coupled to the upper end of the diffusion plate (726).

[0311] Similar to the first embodiment, a light source unit (727) that receives external power and generates visible light may be arranged along the upper edge of the diffuser (726) above the upper edge of the diffuser (726) so that visible light can be irradiated through one edge of the diffuser (726), more specifically, the upper edge of the diffuser (726).

[0312] That is, the light source unit (727) of the lighting device (72) according to the second embodiment is configured to be entirely accommodated within the interior of the tub (20).

[0313] Therefore, it is preferable that the light source (727) be placed on the upper side of the diffusion plate (726) so that the possibility of being relatively affected by the washing water can be minimized.

[0314] The light source unit (727) of the lighting device (72) according to the second embodiment may be configured to include at least one light source element (7272), a circuit board (7271) on which at least one light source element (7272) is mounted, and a substrate holder (7273) that accommodates the circuit board (7271).

[0315] However, considering that the light source unit (727) is placed inside the tub (20), a leak prevention means may be added to the light source unit (727).

[0316] As an additional means for preventing leakage of the light source unit (727), the lighting device (72) according to the second embodiment may further include an upper bracket (722) that accommodates the light source unit (727) entirely within it.

[0317] As shown in FIG. 19 and FIG. 21, the upper bracket (722) may be provided in the form of a hollow box having a cross-section in the shape of the letter ㄷ.

[0318] The light source (727) can be mounted inside the upper bracket (722) by passing through the open lower surface of the upper bracket (722), and a plurality of bolt holes can be provided on the upper surface of the upper bracket (722).

[0319] The substrate holder (7273) and the upper bracket (722) of the light source unit (727) can be fastened to each other through a plurality of first fastening bolts (B1) passing through a plurality of bolt holes.

[0320] Meanwhile, in the lighting device (72) according to the second embodiment, since the light source unit (727) is entirely arranged inside the tub (20), unlike the first embodiment, the light guide plate for changing the path of visible light can be omitted.

[0321] Accordingly, visible light generated from the light source (727) is introduced into the interior of the diffuser (726) through the upper edge of the diffuser (726), and can be irradiated into the interior of the tub (20) by passing through the light-emitting surface (72a) formed on the front surface of the diffuser (726).

[0322] Since the configuration corresponding to the light guide plate can be omitted in this way, the size in the front-rear direction of the lighting device (72) according to the second embodiment can be reduced compared to the first embodiment.

[0323] A lower bracket (723) may be attached to the left and right edges and the bottom edge of the diffuser plate (726). The diffuser plate (726) is entirely exposed to the interior of the tub (20). Therefore, as a means of reinforcing and protecting the diffuser plate (726), a lower bracket (723) may be attached to the left and right edges and the bottom edge of the diffuser plate (726).

[0324] The lower bracket (723) is positioned so as to cover a portion of the front surface of the diffuser plate (726) through which visible light is transmitted. Therefore, the size and area of ​​the light-emitting surface (72a) of the diffuser plate (726) can be determined by the lower bracket (723).

[0325] A bolt hole through which a second fastening bolt (B2) can pass may be formed at the upper end of the lower bracket (723) extending upward beyond the upper edge of the diffuser plate (726).

[0326] The upper part of the lower bracket (723) can be fastened to the substrate holder (7273) via the second fastening bolt (B2).

[0327] The cover (721, 728) is placed on the upper side of the diffuser plate (726) and serves to house the light source unit (727) and the upper part of the diffuser plate inside and protect them.

[0328] Considering the convenience of assembly, the covers (721, 728) may be provided as split bodies along the front-back direction, and the split body positioned in the front may be defined as the front cover (721), and the split body positioned in the rear may be defined as the rear cover (728).

[0329] An accommodation space can be formed between the front cover (721) and the rear cover (728) to accommodate the light source (727), the upper bracket (722), and the upper part of the diffuser plate (726).

[0330] A bolt hole (7211b) and a bolt home (7281b) through which a fastening bolt (not shown) for fastening the front cover (721) and the rear cover (728) can pass may be formed on the upper side of the receiving space.

[0331] Meanwhile, as illustrated in FIG. 19, a sealing member (724) may be placed on the inner surface of the front cover (721) and the rear cover (728) as a means for coupling to the upper bracket (722) placed inside and as a means for preventing the inflow of washing water.

[0332] Similar to the first sealing member (724) and the second sealing member (724) of the first embodiment, the sealing member (724) of the lighting device (72) according to the second embodiment may be configured to have a predetermined elasticity and include an adhesive component so as to function as a bonding means and a sealing means.

[0333] On the inner surfaces of the front cover (721) and the rear cover (728), grooves (7211a, 7281a) may be formed concavely as a means for guiding the position of the sealing member (724) and expanding the bonding area, respectively.

[0334] Meanwhile, as described above, the lighting device (72) according to the second embodiment is configured to be placed entirely inside the tub (20), but the outer end (7271a) and the terminal portion (7271b) of the circuit board (7271) constituting the light source portion (727) may be configured to extend to the outside of the tub (20) by passing through the rear surface (23) of the tub (20) so that power can be supplied to the light source portion (727).

[0335] In this way, an extension tube (7282) may be integrally provided in the rear cover (728) as a means for protecting and guiding the outer end (7271a) and terminal portion (7271b) of the circuit board (7271) extending to the outside of the tub (20).

[0336] As illustrated in Fig. 21, the extension pipe (7282) may be provided in the shape of a pipe having a square cross-section, for example.

[0337] One end of the extension pipe (7282) is integrally connected to the rear surface of the rear cover (728), and a passage formed inside the extension pipe (7282) can be connected to the internal space of the covers (721, 728).

[0338] The other end of the extension pipe (7282) can be extended to the outside of the tub (20) through an opening (232) formed on the rear surface (23) of the tub (20).

[0339] The circuit board (7271) of the light source unit (727) can be extended through the internal passage of the extension tube (7282), and the outer end (7271a) and terminal portion (7271b) of the circuit board (7271) can pass through the other end of the extension tube (7282) and be exposed to the outside of the extension tube (7282).

[0340] In this way, the lighting device (72) according to the second embodiment can be placed so that only the other end of the extension tube (7282) and the outer end (7271a) of the circuit board (7271) can be placed outside the tub (20), and the remaining portions can be placed inside the tub (20).

[0341] Meanwhile, as a means to prevent leakage between the opening (232) of the tub (20) and the extension pipe (7282), a gasket (729) formed of a predetermined elastic material may be further provided on the outer surface of the extension pipe (7282).

[0342] [Detailed configuration of the lighting device according to the third embodiment]

[0343] Hereinafter, a lighting device (72) according to a third embodiment of the present invention will be described with reference to FIGS. 22 to 24.

[0344] First, referring to FIG. 22, similarly to the second embodiment described above, a lighting device (72) according to the third embodiment of the present invention is arranged to be fixed to the rear surface (23) of the tub (20).

[0345] However, unlike the second embodiment, only the diffusion plate (726) and the lower bracket (723) that define the light-emitting surface (72a) may be arranged inside the tub (20), and other components of the lighting device (72) may be arranged outside the tub (20).

[0346] That is, the lighting device (72) according to the third embodiment of the present invention has a basic configuration almost similar to that of the second embodiment described above, but unlike the second embodiment described above, the light source unit (727) corresponding to the electric component and its surrounding components can be configured to be placed outside the tub (20).

[0347] Therefore, in the following, only the parts related to the configuration that are different from the second embodiment will be described, and the description of the configuration that is the same as or overlapping with the second embodiment will be omitted.

[0348] As illustrated in Fig. 23, the components such as the light source unit (727) corresponding to the electric component and the cover (721, 728) and the upper bracket (722) for accommodating and protecting the light source unit (727) are arranged on the outside of the tub (20), thereby minimizing the possibility of the light source unit (727) being damaged by the washing water.

[0349] Figures 23 and 24 illustrate detailed configurations of a lighting device (72) according to the third embodiment.

[0350] Similar to the second embodiment described above, the lighting device (72) according to the third embodiment can be pre-assembled to form an assembly before being placed and fixed to the tub (20).

[0351] However, the lighting device (72) of the second embodiment is configured to be fixed to the rear surface (23) of the tub (20) after being moved entirely into the interior of the tub (20) through the front surface of the tub (20), but in the case of the third embodiment, the lighting device (72) can be connected and fixed to the tub (20) by simply inserting it through the opening (232) provided in the tub (20).

[0352] More specifically, an edge surface (28) having a curved surface having a predetermined curvature is provided between the upper surface (24) and the rear surface (23) of the tub (20).

[0353] In this way, an opening (232) formed in a slot shape may be provided on the edge surface (28) connecting the upper surface (24) and the rear surface (23) of the tub (20).

[0354] The slot-shaped opening (232) may have an open area large enough to allow the lower part of the lighting device (72) composed of a diffuser plate (726) and a lower bracket (723) to pass through.

[0355] That is, the front-back width and the left-right width of the opening (232) can be formed to be larger than the front-back width and the left-right width of the lower part of the lighting device (72) composed of the diffuser plate (726) and the lower bracket (723).

[0356] Additionally, the front-back and left-right widths of the opening (232) can be formed smaller than the front-back and left-right widths of the cover (721, 728).

[0357] Therefore, the lighting device (72) according to the third embodiment of the present invention can be combined with the tub (20) by first allowing the lower part, which is composed of the diffuser plate (726) and the lower bracket (723), to enter the opening (232) and then simply moving parallel along the downward direction.

[0358] When the combination through parallel movement of the lighting device (72) is completed in this way, the diffusion plate (726) and the lower bracket (723) can be placed inside the tub (20) in a state where they pass through the opening (232) of the tub (20) in the vertical direction and extend from the outside of the tub (20) toward the inside of the tub (20).

[0359] At this time, since the cover (721, 728) cannot pass through the opening (232) due to the width in the front-back direction and the width in the left-right direction of the opening (232) of the tub (20), the cover (721, 728) can be placed on the upper side of the corner surface (28) of the tub (20) with the light source (727) accommodated inside.

[0360] Although not shown, the inner surface (20 in) of the rear surface (23) of the tub (20) may be provided with means for supporting and fixing the diffuser plate (726) and lower bracket (723) introduced into the interior through the opening (232).

[0361] In addition, in order to prevent leakage of washing water between the opening (232) of the tub (20) and the diffuser plate (726), a sealing means similar to the gasket (729) of the second embodiment described above may be provided in the opening (232) of the tub (20).

[0362] Although the present invention has been described with reference to the drawings exemplified above, it is to be understood that the present invention is not limited to the embodiments and drawings disclosed herein, and that various modifications may be made by those skilled in the art within the scope of the technical idea of ​​the present invention. Furthermore, even if the operational effects according to the configuration of the present invention have not been explicitly described while describing the embodiments of the present invention, it is natural that the effects predictable by the corresponding configuration should also be acknowledged.

Claims

1. A tub that accommodates dishes and forms a washing space with an open front; and A lighting device having a light-emitting surface that irradiates visible light toward the washing space and is installed on the inner surface of the tub; Including, The inner surface of the above tub is provided with an opening that connects the inside and outside of the above tub, The above lighting device is a dishwasher that is arranged in the tub through the opening and across the inside and outside of the tub.

2. In paragraph 1, The above lighting device, A light source unit that generates the above visible light; A light guide plate that changes the path of visible light generated from the above light source; A diffusion plate that forms the light-emitting surface and diffuses visible light introduced through the light guide plate toward the light-emitting surface; and A front cover coupled to the outer edge of the light guide plate and fixed to the tub; Including, The above front cover is attached to the inner surface of the above tub, A dishwasher in which the opening is closed by the front cover and the diffuser.

3. In paragraph 2, The above lighting device, A first sealing member that attaches the front cover to the inner surface of the tub and prevents water leakage between the front cover and the tub; and A second sealing member that attaches the diffusion plate to the front cover and prevents leakage between the front cover and the diffusion plate; Dishwasher including:

4. In paragraph 3, The above tub is provided with a protruding surface that is arranged around the opening and is formed convexly toward the washing space, On one side of the front cover, which is positioned to face the inner surface of the tub, a first groove portion is formed at a position corresponding to the protruding surface and is formed concavely toward the washing space so that the protruding surface is inserted. A dishwasher in which the first sealing member is positioned between the protruding surface and the first groove.

5. In paragraph 4, The above protruding surface is provided with a plurality of through holes through which the first sealing member passes, A dishwasher in which the above-mentioned plurality of through holes are arranged at equal intervals along the protruding surface.

6. In paragraph 2, The above lighting device, A mid-case arranged outside the tub and housing and supporting the light source and the light guide plate; Including more, The above tub, A rear bracket arranged around the opening on the outer surface of the inner surface and fixing the mid-case to the tub; Including, A dishwasher in which the above mid-case is detachably fixed to the tub in a non-adhesive manner by the above rear bracket.

7. In paragraph 6, The above rear bracket is, A bracket body extending along the periphery of the above opening and fixed to the outer surface of the above inner surface; and A plurality of fixed parts, one end of which is a fixed end integrally connected to the bracket body and the other end is a free end extending toward the opening, and which elastically support the outer edge of the mid-case; Dishwasher including.

8. In paragraph 7, The above plurality of fixed parts are, A pair of first fixing parts arranged at positions spaced apart in the vertical direction with the above mid-case in between; Including, The vertical distance between the pair of first fixing parts is configured to be variable as it progresses toward the bracket body, The minimum vertical distance between the pair of first fixing parts is smaller than the vertical width of the mid-case, A dishwasher in which the maximum vertical distance between the pair of first fixed parts is greater than the vertical width of the mid-case.

9. In paragraph 7, The above plurality of fixed parts are, A pair of second fixing parts arranged at positions spaced apart in the left and right directions with the above mid-case in between; Including, The left-right distance between the pair of second fixing parts is configured to be variable as it progresses toward the bracket body, The minimum left-right distance between the pair of second fixing parts is smaller than the left-right width of the mid-case, A dishwasher in which the maximum left-right distance between the pair of second fixing parts is greater than the left-right width of the mid-case.

10. In paragraph 6, After the front cover is fixed to the inside of the tub while the light guide plate is attached to the front cover, the mid-case is fixed to the outside of the tub. A dishwasher in which the front cover and the mid-case are each fixed to the tub while being unfastened to each other.

11. In paragraph 2, The above light source unit, A dishwasher extending in the left and right direction parallel to the top or bottom of the above-mentioned light-emitting surface.

12. In paragraph 2, The above light source unit, A dishwasher extending in the vertical direction parallel to the left or right end of the above-mentioned light-emitting surface.

13. In paragraph 1, A dishwasher in which the above lighting device is fixed to a rear surface of the inner surface of the tub, the rear surface being opposite to the open front surface.

14. In paragraph 13, A plurality of guide rails arranged on both sides of the inner surface of the tub to guide the movement of the storage section where the above dishes are stored; Including more, A dishwasher in which the lower end of the light-emitting surface is positioned between the lower rail, which is positioned at the lowest side among the plurality of guide rails, and the upper rail, which is positioned at a higher position than the lower rail, in the vertical direction.

15. In paragraph 13, A dishwasher in which the upper end of the light-emitting surface is located between the top rail, which is positioned at the uppermost side among the plurality of guide rails, and the upper rail, based on the vertical direction.

16. In paragraph 1, The above lighting device, A light source unit that generates the above visible light; A diffusion plate that forms the light-emitting surface and diffuses visible light generated from the light source toward the light-emitting surface; and A cover disposed on the upper side of the diffusion plate and housing the light source unit and the upper part of the diffusion plate inside; Including, One side of the cover is provided with an extension pipe that protrudes toward the inner surface of the tub and extends through the opening to the outside of the tub. A dishwasher in which the above cover is placed entirely inside the above tub, excluding the above extension pipe.

17. In paragraph 16, A dishwasher in which one end of the light source passes through the cover and extends to the outside of the tub along the inside of the extension pipe.

18. In paragraph 16, The above lighting device, A gasket disposed between the opening and the extension pipe and preventing leakage between the opening and the extension pipe; Dishwasher including:

19. In paragraph 1, The above lighting device, A light source unit that generates the above visible light; A diffusion plate that diffuses visible light generated in the light source toward the washing space and forms the light-emitting surface; and A cover disposed on the upper side of the diffusion plate and housing the light source unit and the upper part of the diffusion plate inside; Including, The light source and the cover are placed outside the tub, A dishwasher wherein the diffuser extends from the outside of the tub toward the inside of the tub through the opening.

20. In paragraph 19, A dishwasher in which the above opening is formed on a corner surface having a predetermined curvature and connecting the upper surface of the tub and the rear surface of the tub.

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