KR20230022655A - Dish washer - Google Patents

Abstract

The present invention relates to a dish washer, in which a through hole is formed on the bottom surface of a sump collecting part and ultraviolet rays are irradiated into the collecting part through the through hole, thereby maximizing a sterilization effect of the washing water accumulated on the bottom surface of the collecting part. In addition, a visible light emitting device for visually recognizing that ultraviolet rays are being irradiated is added to the sterilization module, and the ultraviolet light emitting device and the visible light emitting device are controlled to blink at the same time, thereby intuitively recognizing that sterilization through ultraviolet irradiation is in progress.

Description

Dishwasher {DISH WASHER}

The present invention relates to a dishwasher, and more particularly, by forming a through hole in the bottom surface of a sump collecting part, irradiating ultraviolet rays into the collecting part through the through hole, and then washing water accumulated on the bottom surface of the collecting part and the inside of the collecting part. It relates to a dishwasher that can maximize the sterilization effect on.

BACKGROUND ART A dishwasher is a device that cleans dishes and cooking utensils stored therein by spraying washing water such as water therein. At this time, the washing water used for washing may include a detergent.

The dishwasher includes a washing tub forming a washing space, a storage unit for accommodating objects to be washed inside the washing tub, a spray arm for spraying washing water into the storage unit, and a sump storing water and supplying washing water to the spray arm. It is common to be

By using such a dishwasher, it is possible to reduce the time and effort required for washing dishes to wash objects such as tableware after eating, thereby contributing to user convenience.

Conventionally, a dishwasher is configured to perform a washing cycle for washing an object, a rinse cycle for rinsing an object for washing, and a drying cycle for drying an object after washing and rinsing.

In this way, washing water used during the washing and rinsing cycles is collected by a water collector provided in the sump or drained to the outside.

At this time, due to the structural shape of the water collector, a certain amount of washing water cannot but remain in the water collector even after the drainage is completed.

When it is not operated for a long time or separate washing or sterilization is not performed, there is a very high possibility that some odor and contamination may be generated by bacteria or microorganisms contained in the remaining washing water.

In this regard, Korean Patent Publication No. 10-2020-0065557 (Prior Document 001) discloses that ultraviolet rays are irradiated into the sump collecting part to sterilize microorganisms or bacteria remaining therein, and odors generated after washing dishes. Disclosed is a dishwasher equipped with a sterilizer that removes.

The sterilization device disclosed in Prior Document 001 is disposed on the side of the water collecting unit and is configured to irradiate ultraviolet rays through a through hole formed on the side of the water collecting unit.

At this time, the sterilizer is disposed toward the lower surface of the water collecting unit to irradiate ultraviolet rays toward the lower surface of the water collecting unit where washing water is accumulated.

However, in general, a filtering unit for filtering foreign substances such as food and the like included in the washing water is generally provided inside the water collecting unit.

A filtering unit is also disposed in the collecting unit disclosed in Prior Document 001.

Therefore, since most of the space between the sterilizer and the lower surface of the water collector is occupied by the filtering unit, ultraviolet rays irradiated from the sterilizer do not effectively reach the lower surface of the water collector. As a result, a significant amount of UV rays generated by the sterilizer is blocked by the filtering unit, and the sterilization effect on the lower surface of the water collecting unit is significantly lowered.

In addition, the sterilization device disclosed in Prior Document 001 does not have a means for allowing the user to recognize that ultraviolet rays are being irradiated. Therefore, when a user who is not sufficiently aware of this opens the door of the dishwasher while the sterilizer is operating, that is, in a state where ultraviolet rays are being irradiated, there is a high risk of ultraviolet rays being exposed to the user.

Korean Patent Publication No. 10-2020-0065557

The present invention has been made to solve the above-described problems of the prior art, and by forming a through hole on the bottom surface of the collecting part of the sump and irradiating ultraviolet rays into the collecting part through the through hole, A first object is to provide a dishwasher capable of maximizing the sterilization effect of washing water.

In addition, the present invention intuitively recognizes that sterilization through ultraviolet irradiation is in progress by adding a visible light emitting device to visually recognize that ultraviolet rays are being irradiated to the sterilization module and controlling the ultraviolet light emitting device and the visible light emitting device to blink simultaneously. A second object is to provide a dishwasher that can do this.

In addition, the present invention provides a dishwasher capable of preventing direct irradiation of visible light to the user's eyes and minimizing glare by adding a covering member for indirectly illuminating visible light generated through a visible light emitting device to a sterilization module. for the third purpose.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned above can be understood by the following description and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations indicated in the claims.

A dishwasher according to the present invention includes a washing tub having an open front washing space in which objects to be washed are stored; a sump including a water collecting part for storing washing water discharged from the washing tank and disposed at a lower side of the washing tank; and a sterilization module coupled to a lower surface of the water collecting part and irradiating ultraviolet rays toward the inside of the water collecting part. Through this, it has an effect of maximizing the sterilization effect of the washing water accumulated on the bottom surface of the water collecting unit.

In addition, a through hole formed by penetrating in a vertical direction is formed on a lower surface of the water collecting part, and ultraviolet rays generated in the sterilization module may pass through the through hole and be irradiated toward the inside of the water collecting part.

In addition, the sterilization module may include a light source unit for irradiating visible light along with the ultraviolet light toward the inside of the water collecting unit.

In addition, the light source unit may include a first light emitting element generating and irradiating the ultraviolet light;

a second light emitting element generating and irradiating the visible light; and a circuit board on which the first light emitting device and the second light emitting device are mounted, and the first light emitting device and the second light emitting device may simultaneously blink.

In addition, the second light emitting element may be mounted on the circuit board at a position farther away from the open front surface of the washing tub than the first light emitting element.

In addition, the sterilization module may further include a covering member disposed above the second light emitting element and disposed to entirely cover the second light emitting element in the vertical direction.

In addition, the sterilization module includes a lower housing that accommodates the circuit board and is fixed to the lower side of the lower surface of the water collector; an upper housing disposed above the lower housing and at least partially inserted into the through hole; and a light transmission plate disposed between the lower housing and the upper housing.

In addition, the covering member may include a covering rib integrally formed with the lower housing.

In addition, the lower housing includes a cylindrical housing body in which the circuit board is accommodated and a light transmission hole formed at a center thereof passing through in the vertical direction, the first light emitting element and the second light emitting element may be disposed on a lower side of the light transmission hole, and the covering rib may protrude from an inner surface of the light transmission hole toward the inside of the light transmission hole.

In addition, a width of the covering rib in a front-back direction based on a front-back direction perpendicular to the up-down direction may be greater than or equal to a width of the second light emitting element in a front-back direction.

Also, an area occupied by the covering rib inside the light transmission hole may be greater than or equal to an area occupied by the second light emitting device on the circuit board.

In addition, the covering member may include a light blocking film attached to the light transmitting plate.

In addition, the light blocking film may be attached to an upper surface of the light transmission plate facing the upper housing.

In addition, the light blocking film may be attached to a lower surface of the light transmission plate facing the lower housing.

Also, an area occupied by the light blocking film in the light transmission plate may be greater than or equal to an area occupied by the second light emitting device on the circuit board.

The dishwasher according to the present invention forms a through hole on the bottom surface of the water collecting part of the sump and irradiates ultraviolet rays into the water collecting part through the through hole, thereby maximizing the sterilizing effect on the washing water accumulated on the bottom surface of the water collecting part. have an effect

In addition, the dishwasher according to the present invention adds a visible light emitting device to the sterilization module to visually recognize that ultraviolet light is being irradiated, and controls the ultraviolet light emitting device and the visible light emitting device to blink simultaneously, so that sterilization through ultraviolet irradiation is in progress. has an effect that can be recognized intuitively by the user.

In addition, the dishwasher according to the present invention adds a covering member for indirectly illuminating the visible light generated through the visible light emitting device to the sterilization module, thereby preventing visible light from being directly irradiated to the user's eyes and minimizing glare. have an effect

In addition to the effects described above, specific effects of the present invention will be described together while explaining specific details for carrying out the present invention.

1 is a front perspective view of a dishwasher according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of the dish washing machine shown in FIG. 1 .
3 is an upper perspective view illustrating a sump of the dishwasher according to an embodiment of the present invention.
FIG. 4 is a plan view of the sump shown in FIG. 3 .
Figure 5 is a lower perspective view of Figure 4;
6 is an exploded perspective view of FIG. 5;
7 is an upper perspective view of the sterilization module in FIG. 5;
8 and 9 are exploded perspective views of the sterilization module shown in FIG. 7 .
10 is a cross-sectional view of the sterilization module of FIG. 7 taken along line AA.
11 and 12 are partially enlarged views of the light transmitting plate and the light source unit shown in FIG. 8 .

The above objects, features and advantages will be described later in detail with reference to the accompanying drawings, and accordingly, those skilled in the art to which the present invention belongs will be able to easily implement the technical spirit of the present invention. In describing the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to 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.

Although first, second, etc. are used to describe various components, these components are not limited by these terms, of course. These terms are only used to distinguish one component from another component, and unless otherwise stated, the first component may be the second component, of course.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

Hereinafter, the arrangement of an arbitrary element on the "upper (or lower)" or "upper (or lower)" of a component means that an arbitrary element is placed in contact with the upper (or lower) surface of the component. In addition, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

In addition, when a component is described as "connected", "coupled" or "connected" to another component, the components may be directly connected or connected to each other, but other components may be "interposed" between each component. ", or each component may be "connected", "coupled" or "connected" through other components.

Singular expressions used herein include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or steps described in the specification, and some of the components or some of the steps It should be construed that it may not be included, or may further include additional components or steps.

Also, singular expressions used in this specification include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or steps described in the specification, and some of the components or some of the steps It should be construed that it may not be included, or may further include additional components or steps.

Throughout the specification, when "A and/or B" is used, this means A, B or A and B unless otherwise specified, and when used as "C to D", this means unless otherwise specified As long as there is no, it means C or more and D or less.

Hereinafter, the present invention will be described with reference to drawings showing the configuration of a dishwasher 1 according to an embodiment of the present invention.

[Overall structure of dishwasher]

Hereinafter, the overall structure of a dishwasher according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front perspective view showing a dishwasher according to the present invention, and FIG. 2 is a simplified cross-sectional view showing the internal structure of the dishwasher according to the present invention.

As shown in FIGS. 1 and 2, the dishwasher 1 according to the present invention includes a case 10 forming an outer shape, and a washing space 21 installed inside the case 10 and washing objects to be washed. Forming a washing tub 20 with an open front, a door 30 opening and closing the open front of the washing tub 20, located at the bottom of the washing tub 20 and supplying and collecting washing water for washing the object to be washed , circulating and draining drive unit 40, detachably provided in the washing space 21 inside the washing tank 20 and installed adjacent to the storage unit 50 in which the object to be washed is seated, and the storage unit 50 and a spraying unit 60 for spraying washing water for washing the object to be washed.

At this time, the object to be washed seated in the storage unit 50 may be, for example, tableware such as bowls, plates, spoons, chopsticks, and other cooking utensils. In the following, unless otherwise specified, the object to be washed will be referred to as tableware.

The washing tub 20 may be formed in a box shape with an open front as a whole, and is a configuration known as a so-called tub.

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

The washing tub 20 may be formed through press processing of a metal plate material resistant to high temperature and moisture, for example, a stainless plate material.

In addition, on the inner surface of the washing tub 20, a plurality of brackets are disposed for the purpose of supporting and installing functional components such as the accommodating part 50 and the spraying part 60 to be described later inside the washing tub 20. It can be.

Meanwhile, the drive unit 40 includes a sump 41 for storing washing water, a sump cover 42 for separating the sump 41 from the washing tank 20, and a water supply unit for supplying washing water to the sump 41 from the outside. 43, a drainage unit 44 for discharging the washing water of the sump 41 to the outside, a water supply pump 45 for supplying the washing water of the sump 41 to the injection unit 60, and a supply passage 46 It can be configured to include.

The sump 41 is disposed on the lower side of the lower surface 25 of the washing tub 20 and serves to collect washing water to be used during a washing or rinsing cycle.

The sump 41 is connected to a water supply passage 43 through which washing water supplied from the outside flows.

A water supply valve (not shown) may be provided in the water supply passage 43 to regulate washing water supplied from the outside. When the water supply valve is opened, washing water supplied from the outside flows into the sump 41 through the water supply passage 43 . A flow meter (not shown) may be provided in the water supply passage 43 to measure the flow rate of the washing water flowing into the sump 41 .

The sump 41 may be connected to a drainage passage 44 for guiding the stored washing water to the outside of the dishwasher 1 . A drain pump may be provided in the drain passage 44 to drain the washing water in the sump 41 through the drain passage 44 . When the drain pump operates, the washing water stored in the sump 41 flows out of the case 10 through the drain passage 44 .

Meanwhile, a filtering unit 47 serving to filter dirt from washing water moving from the washing tub 20 to the sump 41 may be disposed in the sump 41 .

The sump cover 42 is disposed above the sump 41 and may serve to separate the washing tub 20 and the sump 41 . In addition, 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 injection unit 60 into the sump 41 .

That is, the washing water sprayed toward the dishes from the jetting unit 60 may fall to the lower portion of the washing space 21 and be returned to the sump 41 via the sump cover 42 .

The water supply pump 45 is provided on the side or bottom of the sump 41 and serves to pressurize and supply the washing water to the injection unit 60 .

One end of the water supply pump 45 may be connected to the sump 41 and the other end may be connected to the supply passage 46 . An impeller 451 and a motor 453 may be provided inside the water supply pump 45 . 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 60 via the supply passage 46.

Meanwhile, the supply passage 46 may serve to selectively supply the washing water supplied from the water supply pump 45 to the injection unit 60 .

Illustratively, the supply passage 46 includes a first supply passage 461 connected to the lower injection arm 61, and a second supply passage 463 connected to the upper injection arm 62 and the top nozzle 63. A supply passage switching valve 465 may be provided in the supply passage 46 to selectively open and close the supply passages 461 and 463 .

At this time, the supply passage switching valve 465 may be controlled to open each of the supply passages 461 and 463 sequentially or simultaneously.

Meanwhile, the spraying unit 60 is provided to spray washing water to dishes stored in the storage unit 50 .

In more detail, the spraying unit 60 is located in the lower part of the washing tub 20 and sprays washing water to the lower rack 51 between the lower spray arm 61 and the lower rack 51 and the upper rack 52. The upper spray arm 62 is located and sprays washing water to the lower rack 51 and the upper rack 52, and is located on the top of the washing tank 20 and sprays the washing water to the top rack 53 or the upper rack 52 It may include a top nozzle 63 that does.

In particular, the lower spray arm 61 and the upper spray arm 62 are provided in the washing space 21 of the washing tub 20 and can spray washing water while rotating toward the dishes in the storage unit 50 .

The lower spray arm 61 may be rotatably supported on the upper side of the sump cover 42 so as to spray washing water while rotating from the lower portion of the lower rack 51 toward the lower rack 51 .

In addition, the upper spray arm 62 may be rotatably supported by the spray arm holder 467 so that washing water can be sprayed while rotating between the lower rack 51 and the upper rack 52 .

Meanwhile, a reflector for converting the washing water sprayed from the lower spray arm 61 upward (U-direction) may be further provided on the lower surface 25 of the washing tub 20 to increase washing efficiency.

As for the detailed configuration of the injection unit 60, configurations already known in the art can be applied, and hereinafter, description of the specific configuration of the injection unit 60 will be omitted.

Meanwhile, the washing space 21 may include a storage unit 50 for storing dishes.

The accommodating part 50 is provided to be drawn out from the inside of the washing tub 20 through the open front of the washing tub 20 .

Illustratively, in FIG. 2 , a lower rack 51 located at the lower part of the washing tub 20 and capable of accommodating relatively large large dishes, and an upper part located above the lower rack 51 and capable of accommodating medium-sized dishes An embodiment in which a storage unit including a rack 52 and a top rack 53 located above the washing tub 20 and in which small dishes and the like can be stored is provided is shown. Although the present invention is not limited thereto, description will be made based on an embodiment of a dishwasher provided with three accommodating units 50 as shown.

These lower racks 51, upper racks 53, and top racks 53 may be configured to be drawn out through the open front surface of the washing tub 20, respectively.

To this end, guide rails 54 may be provided on both side walls forming the inner circumferential surface of the washing tub 20, and illustratively, the guide rails 54 include an upper rail 541, a lower rail 542, and a top rail. (543).

Wheels may be provided under the lower rack 51, the upper rack 53, and the top rack 53, respectively. The user can store dishes in these lower racks 51, upper racks 53, and top racks 53 through the front of the washing tub 20 to the outside, or easily wash dishes from them. can be taken out

The guide rail 54 is a fixed guide rail in the form of a simple rail for guiding the withdrawal and input of the injection unit 60 or guides the withdrawal and accommodation of the injection unit 60 and the withdrawal distance according to the withdrawal of the injection unit 60 It may be provided as a telescopic guide rail that increases.

Meanwhile, the door 30 has the purpose of opening and closing the open front of the washing tub 20 described above.

A hinge part (not shown) for opening and closing the door 30 is provided at the lower part of the normally opened front surface, and the door 30 is opened using the hinge part as a rotating shaft.

Here, a handle 31 for opening the door 30 and a control panel 32 for controlling the dishwasher 1 may be provided on an outer surface of the door 30 .

As shown, the control panel 32 includes a display 33 for visually displaying information about the current operating state of the dishwasher, a selection button for inputting a user's selection operation, and an on-off switch for the dishwasher. A button unit 34 including a power button or the like to which a user's manipulation is input may be provided.

Meanwhile, the inner surface of the door 30 forms one side of the washing tub 20 when the door 30 is closed, and the lower rack 51 of the storage unit 50 can be supported when the door 30 is opened. form a seating surface.

To this end, when the door 30 is fully opened, the inner surface of the door 30 preferably forms a horizontal plane state in the same direction as the direction in which the guide rails 54 in which the lower rack 51 is guided extend.

Meanwhile, although not shown, a drying air supply unit for generating and supplying high-temperature drying air to the inside of the washing tub 20 may be provided at a lower portion of the washing tub 20 .

[Detailed configuration of sump]

Hereinafter, a detailed configuration of the sump 41 provided in the dishwasher 1 according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4 .

Referring to FIGS. 3 and 4 , the sump 41 provided in the dishwasher 1 according to the embodiment of the present invention is disposed below the lower surface 25 of the washing tub 20 .

The sump 41 is connected to the lower surface 25 of the washing tank 20 so that washing water in the washing tank 20 passes through a sump hole (not shown) along the lower surface 25 and is collected in the sump 41 .

A funnel-shaped convergence surface having a downward gradient toward the sump 41 may be formed on the lower surface of the washing tub 20 so that washing water may easily move to the sump 41 .

The sump 41 is a valve in which a sump body 411 coupled to the lower side of the lower surface 25 of the washing tub 20, a water collector 412 for collecting washing water, and a supply oil conversion valve 465 are disposed. It may be configured to include a coupling part 413.

The sump body 411 is disposed on the lower side of the lower surface 25 of the washing tub 20 and is directly or indirectly coupled to the washing tub 20 .

As shown, the sump body 411 may be formed in an approximate disk shape. An inclined surface 4111 having a downward slope may be formed on an upper surface of the sump body 411 to serve to guide the washing water to the water collector 412 .

Although not shown in FIGS. 3 and 4 , a sump cover may be disposed above the sump body 411 as described above.

The water collector 412 may be formed in a cylindrical shape to effectively store washing water collected through the inclined surface 4111 of the sump body 411 .

The water collecting unit 412 may be disposed below the sump hole to correspond to the sump hole of the washing tub 20 .

The upper end 4121 of the water collector 412 having a cylindrical shape is entirely open and may be integrally connected to the inclined surface 4111 of the sump body 411 .

The lower surface 4122 of the water collecting part 412 extends from the upper part 4121 toward the lower direction (D-direction), and the lower surface 4122 has a circular through hole into which the sterilization module 415 described later is coupled ( 4123) can be formed.

A water supply pipe 4124 connected to the water supply passage 43 and through which washing water supplied from the outside flows into the water collector 412 may be provided on an outer surface of the water collector 412 .

In addition, a drain pipe 4125 may be provided on an outer surface of the water collector 412, to which a drain pump (not shown) is mounted, to which the drain passage 44 is connected, and through which washing water in the water collector 412 is discharged to the outside. .

In addition, a supply pipe 4126 for supplying washing water in the water collecting part 412 to the water supply pump 45 may be provided on an outer surface of the water collecting part 412 .

The water supply pipe 4124, the drain pipe 4125, and the supply pipe 4126 may be provided in the form of a connection pipe or a nipple protruding from the outer surface of the water collecting part 412, and preferably, the outer surface of the water collecting part 412 It may be integrally provided on the side.

Meanwhile, the sump 41 may include a valve coupling part 413 in which a supply passage switching valve 465 is disposed at a position rearwardly spaced from the water collecting part 412 as an upper side of the sump body 411 .

The valve coupling part 413 is provided on the upper side of the sump body 411 and may be formed in a substantially circular shape. The valve coupling portion 413 may include an outer wall 4131 that forms a rim of the valve coupling portion 413 and has a hollow cylindrical shape.

As shown, the outer wall 4131 of the valve coupling part 413 may have a cylindrical shape having a constant thickness.

At this time, the upper side of the valve coupling part 413 may be provided higher than the upper side of the sump body 411 based on the vertical direction (U-D direction).

A washing water supply hole 4132 communicating with the first supply passage 461 and the second supply passage 462 may be formed on an upper surface of the valve coupling part 413 .

As shown, the washing water supply hole 4132 may be formed by opening in a downward direction (D-direction) from the valve coupling part 413 . Washing water may flow from the water supply pump 45 to the valve coupling part 413 through the washing water supply hole 4132 .

Meanwhile, as described above, the sterilization module 48 may be coupled to the lower side of the lower surface 4122 of the water collector 412 .

Hereinafter, the detailed configuration of the sterilization module 48 will be described in detail with reference to FIG. 5 and below.

[Detailed composition of sterilization module]

Referring first to FIGS. 5 and 6 , the dishwasher 1 according to one embodiment of the present invention may include a sterilization module 48 for sterilizing the inside of the water collector 412 of the sump.

The sterilization module 48 sterilizes the washing water remaining on the inner surface of the water collecting part 412 and the lower surface 4122 of the water collecting part 412 and the filtering part disposed inside the water collecting part 412 by using ultraviolet rays. can

However, as shown, the sterilization module 48 of the dishwasher 1 according to an embodiment of the present invention is coupled to the lower side of the lower surface 4122 of the water collecting part 412, and the inside of the water collecting part 412 It may be configured to irradiate ultraviolet rays in an upward direction (U-direction) toward the .

Therefore, compared to a configuration in which the sterilization module 48 is disposed on the side surface of the water collecting part 412 rather than the lower surface 4122 as in the prior art, the inside of the water collecting part 412 can be evenly irradiated with ultraviolet rays.

In addition, even in a state in which the filtering member is disposed inside the water collector 412, the interference of the filtering member with respect to the UV irradiation path can be minimized, so that the sterilization effect can be remarkably improved.

Meanwhile, in order to arrange and fix the sterilization module 48, at least one support boss 4122b may be provided on the lower side of the lower surface 4122 of the water collecting part 412. In the illustrated embodiment, an embodiment in which a total of three support bosses 4122b are provided is shown. Although the present invention is not limited thereto, description will be made based on an embodiment in which a total of three support bosses 4122b are provided on the lower surface 4122 of the water collector 412 as shown.

The support bosses 4122b are disposed spaced apart from each other at a predetermined interval around the circular through hole 4123 formed in the lower surface 4122 of the water collecting part 412, and preferably are spaced apart from each other at the same interval. state can be placed.

The support boss 4122b may be formed such that one end is fixed to the lower side of the lower surface 4122 of the water collecting part 412 and the other end extends downward (D-direction), preferably in the vertical direction. .

The other end of the support boss 4122b extending in the downward direction (D-direction) may be coupled to the fastening tab 4842 provided in the lower housing 484 of the sterilization module 48, as will be described later.

The other end of the support boss 4122b and the fastening tab 4842 of the lower housing 484 may be fastened to each other through a fastening means not shown. For example, the fastening means may be a screw bolt.

As shown, a screw hole may be formed at the other end of the support repair so that a screw bolt or the like can be inserted and fastened.

On the other hand, between these support bosses 4122b, coupling ribs 4122a extending vertically from the lower side of the lower surface 4122 of the water collector 412 and arranged in a ring shape around the through hole 4123 are can be formed

The coupling rib 4122a is in contact with the outer surface of the lower housing 484 of the sterilization module 48 and serves to increase the bonding force to the lower housing 484. To this end, the coupling rib 4122a may be provided in the form of a barrier rib extending around the circular through hole 4123 .

As shown, the coupling rib 4122a extends in the circumferential direction between the support bosses 4122b and may be integrally formed with the support bosses 4122b. Through this, an effect of increasing the rigidity of the support boss 4122b is obtained.

Meanwhile, a barrier rib-shaped protective rib 4122c disposed in an arc shape may be disposed outside the support boss 4122b and the coupling rib 4122a in a radial direction.

The protective rib 4122c serves to protect the light source unit 485, which will be described later, from washing water leaking from the sump or washing tank 20. To this end, the lower end of the protective rib 4122c may extend further downward to a position lower than the position of the lower end of the sterilization module 48 in the vertical direction (U-D direction).

On the other hand, as shown in FIGS. 7 to 9, the sterilization module 48 disposed on the lower surface 4122 of the water collecting unit 412 includes a light source unit 485, a lower housing 484, a light transmitting plate 482, silicon It may include a gasket 483 and an upper housing 481.

The light source unit 485 serves to generate ultraviolet rays to be irradiated into the water collecting unit 412 to sterilize the inside of the water collecting unit 412 .

To this end, the light source unit 485 may include a first light emitting element 4852 generating and irradiating ultraviolet light, and a circuit board 4851 on which the first light emitting element 4852 is mounted.

As already known in the art, the first light emitting device 4852 may be a light emitting diode chip capable of generating ultraviolet light by converting electric energy into ultraviolet light or a package including the light emitting diode chip.

At this time, the generated ultraviolet rays may be ultraviolet rays of a UV (Ultraviolet)-C wavelength band having a range of 100 nm to 280 nm with high sterilization power. However, this is merely exemplary, and chip-type devices having different wavelength bands and light emitting capacities may be applied according to the water collecting capacity and size of the water collecting unit 412 . Illustratively, the following will be described based on an embodiment in which the first light emitting element 4852 is a light emitting diode chip.

A first light emitting device 4852 provided in the form of a light emitting diode chip is mounted on the upper surface of the circuit board 4851, and serves to supply electrical energy to the first light emitting device 4852.

Since the configuration of the circuit board 4851 can be applied to any type of substrate previously known in the art, a detailed description of the configuration will be omitted.

However, although the illustrated embodiment is illustrated as having a circuit board 4851 configured in a rectangular plate shape, the present invention is not limited thereto, and circuit boards having various shapes may be applied. For example, a circuit board having a disc shape corresponding to the shapes of the lower housing 484 and the upper housing 481 to be described later can also be applied. Hereinafter, the circuit board 4851 provided in the shape of a rectangular plate will be described as a reference.

Meanwhile, as shown, the first light emitting device 4852 may be mounted as close as possible to an edge of the rectangular circuit board 4851 . In this way, the position at which the first light emitting element 4852 is mounted is the foremost position closest to the door 30 based on the installed state of the sterilization module 48 and as far away as possible in the radial direction from the center of the circular through hole 4123. It can be a tip that is spaced apart.

By arranging the first light emitting element 4852 at the front side as much as possible, emission of ultraviolet rays generated from the first light emitting element 4852 to the outside of the washing tub 20 can be minimized. That is, since the ultraviolet rays generated in the first light emission are maximally covered by the cylindrical side surface of the water collector 412, exposure of the irradiated ultraviolet rays to the user can be minimized.

Meanwhile, as shown, a substrate frame 4854 having a block shape may be attached to the rear end of the circuit board 4851 on the lower surface of the circuit board 4851 .

The substrate frame 4854 is firmly attached to the lower surface of the circuit board 4851 to reinforce the rigidity of the board and at the same time serves as a fixing member connecting the circuit board 4851 to the lower side of the lower housing 484 do.

To serve as such a fixing member, side step portions 4854a may be formed on both side surfaces of the substrate frame 4854. For example, the side step portion 4854a may include an upper horizontal surface, a lower horizontal surface, and an inclined surface connecting the upper horizontal surface and the lower horizontal surface.

As will be described later, a hook-shaped frame locking protrusion 4847 is provided at the bottom of the lower housing 484 .

When the circuit board 4851 is installed, if the front end side of the circuit board 4851 is first slid between the pair of board ribs 4845 provided at the bottom of the lower housing 484, the side step of the board frame 4854 Fixing to the rear end of the circuit board 4851 may be completed while the portion 4854a moves along the frame holding protrusion 4847.

At this time, the substrate frame 4854 receives a force moving upward (U-direction) while the inclined surface of the side step 4854a moves along the frame holding protrusion 4847. Accordingly, when the installation of the circuit board 4851 is completed, the rear end of the circuit board 4851 may be maintained in close contact between the substrate frame 4854 and the lower housing 484 .

The distal end of the circuit board 4851 can be held in a hooked state by a substrate holding protrusion 4846 provided on the board rib 4845 of the lower housing 484 .

Through this, when the sliding movement of the circuit board 4851 is completed, the front end of the circuit board 4851 is fixed by the board holding protrusion 4846, and the rear end of the circuit board 4851 is fixed by the board frame 4854 and the frame holding protrusion. It can be firmly fixed by the group 4847.

Although not shown, the substrate frame 4854 may include a plurality of terminals for supplying power to the first light emitting element 4852 or receiving a control signal.

Meanwhile, the light source unit 485 may further include a second light emitting element 4853 mounted on the circuit board 4851 and emitting visible light toward the inside of the water collector 412 .

The second light emitting element 4853 is mounted on the circuit board 4851 together with the aforementioned first light emitting element 4852, and power is supplied to the first light emitting element 4852 to emit ultraviolet rays from the first light emitting element 4852. It serves to visually recognize that this is being investigated.

For such visual recognition, the second light emitting element 4853 may generate visible light having a wavelength band with high user visibility, such as blue light or red light, and be controlled to flicker simultaneously with the first light emitting element 4852. can

That is, when the user recognizes that visible light such as blue light or red light is being irradiated from the second light emitting element 4853, the user can immediately recognize that ultraviolet light for sterilization is also being irradiated, and safety can be improved.

Like the first light emitting device 4852, the second light emitting device 4853 may be a light emitting diode chip capable of generating visible light by converting electrical energy into visible light or a package including the light emitting diode chip. Hereinafter, an embodiment in which the second light emitting element 4853 is a light emitting diode chip will be described.

However, visible light generated from the second light emitting device 4853 needs to be diffused farther out of the condensing unit 412 to increase visibility.

To this end, the second light emitting element 4853 is located on the circuit board 4851 at a position farther backward from the open front surface of the washing tub 20 than the first light emitting element 4852. can be mounted on

That is, as shown in FIG. 8 , the second light emitting device 4853 may be disposed at a rear position further away from the door 30 than the first light emitting device 4852 .

In this way, the second light emitting element 4853 is disposed at a position capable of directly or indirectly diffusing visible light to the outside of the collector 412 as far as possible. Accordingly, the visible light generated by the second light emitting device 4853 can be easily identified in the washing tub 20 .

However, in a state in which the filtering member is removed from the water collecting unit 412, visible light from the second light emitting element 4853 is directly exposed to the user's eyes, which is highly likely to cause glare.

As a means for preventing such glare, the sterilization module 48 is disposed above the second light emitting element 4853 and is a covering member disposed to entirely cover the second light emitting element 4853 in the vertical direction (U-D direction). can include

For example, the covering member may be a covering rib 4843 formed on the lower housing 484 or a light blocking film 4823 attached to the light transmission plate 482 .

A detailed configuration of the covering member will be described later with reference to FIG. 10 and below.

Meanwhile, the lower housing 484 accommodates the circuit board 4851 and serves to fix the sterilization module 48 to the lower side of the lower surface 4122 of the water collector 412 as a whole.

More specifically, the circuit board 4851 is accommodated in the housing body 4841 of the lower housing 484.

As shown in FIGS. 8 and 9 , the housing body 4841 may have a hollow cylindrical shape, and may be preferably manufactured through a plastic injection molding method.

On the upper side of the housing body 4841, there is a light-transmitting hole through which ultraviolet light generated from the first light emitting element 4852 and visible light generated from the second light emitting element 4853 can pass upward (U-direction). (4844a) may be formed.

For example, the light transmission hole 4844a may be a square hole including four edges.

A pair of substrate ribs 4845 may be provided inside the housing body 4841 to extend in the front-rear direction (F-R direction) so as to accommodate and fix the circuit board 4851. A space formed between the pair of substrate ribs 4845 may be defined as a substrate accommodating space in which the circuit board 4851 is accommodated.

As described above, the circuit board 4851 is coupled to the lower housing 484 while sliding toward the front of the washing tub 20 from the rear.

The pair of substrate ribs 4845 may be provided in the form of guide walls extending in the front-rear direction (F-R direction) to guide the sliding movement of the circuit board 4851.

At this time, the left-right direction (Le-Ri direction) width formed between the pair of substrate ribs 4845 for sliding movement is greater than or equal to the left-right direction (Le-Ri direction) width of the circuit board 4851. can be formed

The above-described substrate holding protrusion 4846 may protrude toward the substrate accommodating space at the front end side of the inner surface of the pair of substrate ribs 4845 . As described above, the front end side of the circuit board 4851 may be engaged with the substrate holding protrusion 4846 .

At the rear end side of the inner surface of the pair of substrate ribs 4845, the above-described frame holding protrusion 4847 may protrude toward the substrate accommodating space in a hook shape. As described above, the side step portion 4854a of the substrate frame 4854 of the circuit board 4851 may be engaged with the frame holding protrusion 4847.

The board holding protrusion 4846 and the frame holding protrusion 4847 restrict the movement of the circuit board 4851 in the vertical direction (U-D direction) and in the forward and backward directions (F-R direction), in the left and right directions of the circuit board 4851. The circuit board 4851 can be fixed and coupled to the housing body 4841 in such a way that movement (in the Le-Ri direction) is limited by the inner surfaces of the pair of board ribs 4845.

Meanwhile, on the outer surface of the housing body 4841, a plurality of fastening tabs 4842 may protrude outward in the radial direction, respectively.

The other end of the support boss 4122b of the water collecting part 412 described above is coupled to the plurality of fastening tabs 4842 . Corresponding to the number of support bosses 4122b, a total of three fastening tabs 4842 may be provided.

Each of the fastening tabs 4842 may be provided in a downward concave shape so that the other end of the support boss 4122b can be inserted. The inside of the fastening tab 4842 may be formed to have a shape corresponding to the shape of the outer surface of the other end of the support repair.

Through this, when the fastening tab 4842 and the support boss 4122b are fastened, the other end of the support repair is inserted into the fastening tab 4842 and the temporarily assembled state can be maintained.

Each fastening tab 4842 may have a screw hole through which the aforementioned screw bolt may pass and a screw hole corresponding to the aforementioned screw hole of the support boss 4122b.

An upper surface of the housing body 4841 may have a disk-shaped raised portion 4844 .

The disc-shaped raised portion 4844 may be disposed substantially concentric with the cylindrical housing body 4841 . The raised portion 4844 may be at least partially inserted into the cylindrical upper housing 481 to be described later and coupled to an inner circumferential surface of the upper housing 481 .

Since the raised portion 4844 is at least partially coupled to the inner circumferential surface of the upper housing 481, the bonding area between the upper housing 481 and the lower housing 484 can be increased, and through this, the upper housing 481 and the lower Coupling force between the housings 484 may be improved.

Meanwhile, a vertical rib 4844b in the form of a quadrangular partition wall may be provided on an upper surface of the raised portion 4844 to protrude in an upward direction (U-direction).

The vertical rib 4844b provided in the form of a square partition may be disposed in a form surrounding the light transmission hole 4844a.

The outer surface and the upper surface of the vertical rib 4844b are coupled to a lower stepped portion 4834 of a silicon gasket 483 to be described later in direct surface contact. That is, the vertical rib 4844b is coupled to the lower portion of the silicon gasket 483 to support the silicon gasket 483 and the light transmission plate 482 .

The protruding height of the vertical rib 4844b from the raised portion 4844 can be maintained substantially constant, and the protruding height of the vertical rib 4844b from the raised portion 4844 is the lower stepped portion 4834 of the silicon gasket 483. ) It may be formed equal to or smaller than the height of.

As will be described later, the height of the vertical rib 4844b is set in consideration of the amount of deformation of the silicon gasket 483 compressed and deformed in a state sandwiched between the upper housing 481 and the lower housing 484 in order to prevent water leakage. .

Meanwhile, as the first embodiment of the above-described covering member, a covering rib 4843 may be provided on an inner surface of the light transmission hole 4844a as an inner side of the vertical rib 4844b.

As shown in FIG. 8 , the covering rib 4843 may be a plate-shaped rib formed by protruding from the inner surface of the light transmission hole 4844a toward the inside of the light transmission hole 4844a. In this case, the covering rib 4843 may be integrally formed with the raised portion 4844.

Since the covering rib 4843 is provided in a plate shape protruding toward the inside of the light transmission hole 4844a, it may be understood that the covering rib 4843 forms a part of the top surface of the raised portion 4844. An open portion of the upper surface of the raised portion 4844 without the covering rib 4843 functions as a light transmission hole 4844a.

The covering rib 4843 has a purpose of preventing a user from being dazzled by visible light emitted from the second light emitting element 4853. To this end, the covering rib 4843 is disposed above the second light emitting element 4853 and may be disposed to entirely cover the second light emitting element 4853 in a vertical direction (U-D direction).

Based on the illustrated embodiment, the second light emitting element 4853 is formed on the lower side of the rear right corner of the light transmission hole 4844a. Therefore, the covering rib 4843 may be correspondingly formed at the rear right corner of the light transmission hole 4844a.

Also, as illustrated, when the second light emitting element 4853 has a rectangular shape, the covering rib 4843 may be formed to have a rectangular plate shape.

The covering rib 4843 is disposed above the second light emitting element 4853 and entirely covers the second light emitting element 4853 in the vertical direction (U-D direction) so that visible light emitted from the second light emitting element 4853 It works to function as indirect lighting.

To this end, as shown in FIGS. 8 and 10 , the width W21 of the front and rear direction (F-R direction) of the covering rib 4843 is longer than the width W11 of the second light emitting element 4853 in the front and rear direction (F-R direction). It can be formed greater than or equal to.

For the same reason, the left-right direction (Le-Ri direction) width W22 of the covering rib 4843 may be greater than or equal to the left-right direction (Le-Ri direction) width W12 of the second light emitting element 4853. .

That is, the area A2 occupied by the covering rib 4843 inside the light transmission hole 4844a may be greater than or equal to the area A1 occupied by the second light emitting element 4853 on the circuit board 4851. .

Meanwhile, a rib groove 4841a extending in an arc shape may be provided on the upper surface of the housing body 4841 around the raised portion 4844 .

As shown in FIG. 8 , the rib groove 4841a may be provided with a rib groove 4841a concavely formed in a downward direction (D-direction).

A downward rib 4813a provided on an extension surface 4813 of the upper housing 481 to be described later is inserted into the rib groove 4841a.

The lower rib 4813a of the upper housing 481 is provided in an arc shape corresponding to the shape of the rib groove 4841a.

Accordingly, the assembly direction between the upper housing 481 and the lower housing 484 may be determined by the shape of the rib groove 4841a and the downward rib 4813a. Through this, misassembly between the upper housing 481 and the lower housing 484 can be effectively prevented.

At this time, the depth of the rib groove 4841a of the lower housing 484 in the vertical direction (in the U-D direction) is the downward rib of the upper housing 481 so that there is no play between the upper housing 481 and the lower housing 484. It is preferably formed to be greater than or equal to the protruding height of (4813a).

Meanwhile, the light transmitting plate 482 and the silicon gasket 483 are coupled to the light transmitting hole 4844a of the lower housing 484 .

The light-transmitting plate 482 is preferably made of a material having predetermined light-transmitting properties so that ultraviolet light generated from the first light-emitting device 4852 and visible light generated from the second light-emitting device 4853 can effectively pass therethrough. In addition, since the light transmission plate 482 is directly exposed to high-temperature washing water, a material having predetermined heat resistance is preferable.

Quartz glass may be selected as a material having both light transmission and heat resistance.

8 and 9 show that the light transmission plate 482 is provided in a rectangular plate shape, but the present invention is not limited thereto, and is deformed corresponding to the shape of the light transmission hole 4844a of the lower housing 484. can be applied

As shown by way of example, description will be made based on an embodiment in which the light transmission plate 482 is provided in a rectangular plate shape.

The silicon gasket 483 protects the light transmission plate 482 by absorbing shock and vibration transmitted through the lower housing 484 and the upper housing 481, and prevents leakage between the light transmission plate 482 and the lower housing 484. serves to prevent this from happening.

To this end, the silicon gasket 483 may be formed of a silicon rubber material having a predetermined elasticity and a predetermined heat resistance.

The light transmission plate 482 is accommodated in the silicon gasket 483 as a whole. The silicon gasket 483 may be formed to have a rectangular frame shape so as to accommodate the rectangular plate-shaped light transmission plate 482 as a whole.

A central hole 4831 in the shape of a square hole is formed inside the silicon gasket 483 in the shape of a square frame.

A stopper rib 4832 may be formed inside the silicon gasket 483 by protruding inward from the central hole 4831 .

An upper step portion 4833 is formed on the upper side of the stopper rib 4832, the light transmission plate 482 is accommodated as a whole in the upper step portion 4833, and the light transmission plate 482 moves downward (D-direction) can be prevented from moving to

Since the entire light-transmitting plate 482 is accommodated in the upper stepped portion 4833, the side surface of the light-transmitting plate remains in surface contact with the silicon gasket 483 as a whole, and the lower surface 4822 of the light-transmitting plate 482 is at least partially As a result, a state of surface contact with the stopper rib 4832 can be maintained.

Through this, leakage of washing water between the silicon gasket 483 and the light transmission plate 482 can be effectively prevented.

A lower stepped portion 4834 is formed on the lower side of the stopper rib 4832, and the lower stepped portion 4834 may be coupled with the aforementioned vertical rib 4844b of the lower housing 484 inserted.

That is, the vertical rib 4844b of the lower housing 484 is entirely covered by the lower stepped portion 4834 of the silicon gasket 483, and the silicon gasket 483 is the raised portion 4844 of the lower housing 484. can be coupled to

In addition, the outer and upper surfaces of the vertical rib 4844b are covered by the lower step portion 4834 of the silicon gasket 483, and the vertical rib 4844b and the lower step portion 4834 of the silicon gasket 483 is configured to maintain surface contact with each other.

Through this, leakage of washing water between the lower housing 484 and the silicon gasket 483 can be effectively prevented.

In a state where the silicon gasket 483 and the light transmission plate 482 are coupled to the lower housing 484, the upper housing 481 is coupled to the upper surface of the lower housing 484.

As shown, the upper housing 481 may include a cylindrical housing body 4812 and an extension surface 4813 provided at a lower end of the housing body 4812 . The upper housing 481 may be manufactured through plastic injection molding in the same manner as the lower housing 484 described above.

An opening 4812a through which ultraviolet light and visible light passing through the light transmitting plate 482 may pass may be formed at the center of the cylindrical housing body 4812 .

Corresponding to the shape of the rectangular plate 482, the opening 4812a may be a rectangular through-hole formed through the upper surface of the housing body 4812.

The lower end of the housing body 4812 is entirely open. The raised portion 4844 of the lower housing 484 described above may be inserted into and coupled to the lower end of the open housing body 4812 .

The cylindrical outer surface of the housing body 4812 of the upper housing 481 is at least partially inserted into the through hole 4123 formed in the lower surface 4122 of the water collector 412 .

That is, the housing body 4812 of the upper housing 481 is coupled to the through hole 4123 of the water collector 412 and functions as a stopper to close the through hole 4123.

Therefore, an additional member for blocking the through hole 4123 of the water collector 412 and preventing leakage of washing water can be omitted, thereby reducing manufacturing cost and simplifying the manufacturing process.

A sealing ring 486 may be provided to prevent leakage between the housing body 4812 of the upper housing 481 and the through hole 4123 of the water collector 412 and to improve sealing performance.

As shown in FIG. 10 , the sealing ring 486 may be an O-ring fitted to the outer surface of the housing body 4812 of the upper housing 481 and having a predetermined elasticity.

In a state where the sealing ring 486 is inserted into the housing body 4812 of the upper housing 481, when the sterilization module is completely fastened to the lower surface of the water collecting part, the upper surface 4861 of the sealing ring 486 is the water collecting part 412 ) is in close contact with the lower side of the lower surface 4122, and the lower surface 4862 of the sealing ring 486 is in close contact with the expansion surface 4813 of the housing body 4812. Through this, leakage between the housing body 4812 of the upper housing 481 and the through hole 4123 of the water collector 412 can be effectively prevented.

The sealing ring 486 may be formed of a silicone rubber material having a predetermined elasticity and heat resistance, but the present invention is not limited thereto.

The expansion surface 4813 provided on the lower surface of the upper housing 481 may be provided in the form of a flange extending radially outward from an outer surface of the lower surface of the upper housing 481, and the lower housing 484 It may be formed entirely along the circumferential direction on the lower surface of the.

The expansion surface 4813 serves to increase a coupling area between the lower housing 484 and the upper housing 481 .

To this end, the diameter of the expansion surface 4813 may be formed at the same level as the diameter of the upper surface of the housing body 4841 of the lower housing 484 so as to cover the housing body 4841 of the lower housing 484 as a whole. .

Meanwhile, the downward rib 4813a may be integrally provided on the lower surface of the extension surface 4813 as described above.

In order to prevent erroneous assembly between the upper housing 481 and the lower housing 484, the length and shape of the lower rib 4813a may be determined corresponding to the length and shape of the rib groove 4841a of the lower housing 484. there is.

On the other hand, when the upper housing 481 is arranged in the lower housing 484 in place through the downward rib 4813a and the rib groove 4841a, the expansion surface 4813 of the upper housing 481 and the lower housing 484 The upper surface of the can be fastened through mutual fusion in order to prevent the inflow of washing water.

At this time, the expansion surface 4813 of the upper housing 481 and the upper surface of the lower housing 484 may be entirely fused in the circumferential direction, and through this, the upper housing 481 and the lower housing 484 It can be prevented from leaking washing water between them.

For fusion, any method known in the art, such as ultrasonic fusion or laser fusion, may be applied.

Meanwhile, as shown in FIGS. 11 and 12 , a light blocking film 4823 may be provided as the second embodiment of the aforementioned covering member.

Similar to the above-described covering rib 4843, the light blocking film 4823 is disposed above the second light emitting element 4853 and entirely covers the second light emitting element 4853 in the vertical direction (U-D direction).

However, unlike the covering rib 4843 , the light blocking film 4823 may be attached to the light transmitting plate 482 .

Therefore, since the covering rib 4843 is integrally formed with the lower housing 484, when the position of the second light emitting element 4853 is changed, the position of the covering rib 4843 cannot be easily changed in response to this, but light blocking The film 4823 has an advantage of being able to easily change the attached position corresponding to the position change of the second light emitting element 4853.

The light blocking film 4823 entirely covers the second light emitting element 4853 in the vertical direction (U-D direction) so that visible light emitted from the second light emitting element 4853 functions as indirect lighting.

Therefore, a material having lower light transmittance than that of the light transmitting plate 482 may be selected, and a material having semi-transparent and non-transmissive properties may be applied.

The light blocking film is attached to the upper surface 4821 of the light transmitting plate 482 facing the upper housing 481 as shown in FIG. 11, or the light transmitting plate 482 facing the lower housing 484 as shown in FIG. ) may be attached to the lower surface 4822.

However, the width W31 of the light blocking film 4823 in the front-back direction (F-R direction) so as to cover the entire second light-emitting element 4853 in the vertical direction (U-D direction) is F-R direction) may be formed to be greater than or equal to the width W11.

For the same reason, the left-right direction (Le-Ri direction) width W32 of the light blocking film 4823 may be greater than or equal to the left-right direction (Le-Ri direction) width W12 of the second light emitting element 4853. .

That is, the area A3 occupied by the light blocking film 4823 on the upper surface 4821 or the lower surface 4822 of the light transmissive plate 482 is the area occupied by the second light emitting element 4853 on the circuit board 4851 (A1). can be greater than or equal to.

As described above, the present invention has been described with reference to the drawings illustrated, but the present invention is not limited by the embodiments and drawings disclosed in this specification, and various modifications are made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that variations can be made. In addition, although the operational effects according to the configuration of the present invention have not been explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the corresponding configuration should also be recognized.

1: Dishwasher 10: Case
20: washing tank 30: door
40: drive unit 50: storage unit
60: injection part 90: base

Claims (15)

A washing tank having a washing space in which an object to be washed is stored and the front of which is open;
a sump including a water collecting part for storing washing water discharged from the washing tank and disposed at a lower side of the washing tank; and
a sterilization module coupled to a lower surface of the water collecting part and radiating ultraviolet rays toward the inside of the water collecting part;
Dishwasher containing a.
In paragraph 1,
A through hole is formed at the bottom surface of the water collecting part to pass through in the vertical direction,
The dishwasher of claim 1 , wherein the ultraviolet rays generated by the sterilization module pass through the through hole and are radiated toward the inside of the collecting part.
In paragraph 2,
The sterilization module includes a light source unit for radiating visible light along with the ultraviolet light toward the inside of the water collecting unit.
In paragraph 3,
the light source,
a first light emitting element generating and irradiating the ultraviolet rays;
a second light emitting element generating and irradiating the visible light; and
a circuit board on which the first light emitting element and the second light emitting element are mounted;
including,
The first light emitting device and the second light emitting device simultaneously flicker.
In paragraph 4,
The second light emitting element is mounted on the circuit board at a position farther away from the open front surface of the washing tub than the first light emitting element.
In paragraph 4,
The sterilization module,
The dishwasher further includes a covering member disposed above the second light emitting element and entirely covering the second light emitting element in the vertical direction.
In paragraph 6,
The sterilization module,
a lower housing accommodating the circuit board and fixed to a lower side of a lower surface of the water collector;
an upper housing disposed above the lower housing and at least partially inserted into the through hole; and
a light transmitting plate disposed between the lower housing and the upper housing;
A dishwasher further comprising a.
In paragraph 7,
The dishwasher of claim 1, wherein the covering member includes a covering rib integrally formed with the lower housing.
In paragraph 8,
The lower housing includes a cylindrical housing body in which the circuit board is accommodated and a light transmission hole formed at a center thereof passing through in the vertical direction;
The first light emitting element and the second light emitting element are disposed on the lower side of the light transmission hole,
The dishwasher of claim 1 , wherein the covering rib protrudes from an inner surface of the light transmission hole toward the inside of the light transmission hole.
In paragraph 9,
The dishwasher of claim 1 , wherein a width of the covering rib in the front-back direction is greater than or equal to a width of the second light emitting element in the front-back direction based on the front-and-back direction perpendicular to the up-and-down direction.
In paragraph 9,
An area occupied by the covering rib inside the light transmission hole is greater than or equal to an area occupied by the second light emitting element on the circuit board.
In paragraph 7,
The dishwasher of claim 1, wherein the covering member includes a light blocking film attached to the light transmitting plate.
In paragraph 12,
The light-shielding film is attached to an upper surface of the light-transmitting plate facing the upper housing.
In paragraph 12,
The light-shielding film is attached to the lower surface of the light-transmitting plate facing the lower housing.
In paragraph 12,
An area occupied by the light-shielding film on the light-transmitting plate is greater than or equal to an area occupied by the second light-emitting element on the circuit board.

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