WO2022197116A1

WO2022197116A1 - Sterilization apparatus and dishwasher having same

Info

Publication number: WO2022197116A1
Application number: PCT/KR2022/003741
Authority: WO
Inventors: 주종욱; 고영철; 김동효; 신명주; 김은석; 김진한; 서영수; 이기섭
Original assignee: 삼성전자주식회사
Priority date: 2021-03-18
Filing date: 2022-03-17
Publication date: 2022-09-22
Also published as: KR20220130523A

Abstract

A sterilization apparatus and a dishwasher including same are provided. The sterilization apparatus comprises: a lamp body in which a noble gas and a fluorescent material for light emission are contained and which has a cylindrical shape; an outer electrode which is disposed on the outer circumferential surface of the lamp body, extends in the longitudinal direction of the lamp body, and is arranged between the lamp body and a subject adjacent to the lamp body so as to prevent direct light from the lamp body from being incident to one area of the subject; and a reflector which guides light emitted from the lamp body such that light reflected therefrom is incident to one area of the subject where the direct light from the lamp body cannot reach.

Description

Sterilization device and dishwasher including same

The present invention relates to a sterilizing apparatus and a dishwasher including the same, and more particularly, to a sterilizing apparatus using ultraviolet rays and a dishwasher including the same.

BACKGROUND ART In general, a dishwasher is a device for washing stored dishes by spraying washing water at a high pressure, and then drying them. Specifically, the dishwasher operates so that washing water is sprayed at high pressure into the washing tub in which the dishes are accommodated, and the sprayed washing water comes into contact with the dishes to wash foreign substances such as food residues on the surface of the dishes.

A dishwasher may be provided with a sterilization device for sterilizing dishes or a washing room using ultraviolet rays. In this case, when the configuration of the dish or dish washing machine is exposed to excessive ultraviolet light, there is a risk of deterioration and discoloration.

The present invention provides a sterilizing apparatus capable of uniformly irradiating ultraviolet rays over a wide range and a dishwasher including the same.

A sterilizing apparatus according to the spirit of the present invention includes a lamp body having a cylindrical shape in which rare gases and fluorescent materials for light emission are accommodated; An external electrode disposed on an outer circumferential surface of the lamp body and extending in the longitudinal direction of the lamp body, the subject and the lamp body to prevent direct light from the lamp body from being incident on an area of the subject adjacent to the lamp body an external electrode disposed therebetween; and a reflector for guiding the light emitted from the lamp body so that the reflected light is incident on an area of the subject where direct light from the lamp body does not reach.

The reflective plate may include a flat portion disposed on a side opposite to the external electrode with the lamp body interposed therebetween, and an inclined portion bent and extended toward the external electrode from one end of the flat portion.

An angle between a plane passing through the center of the lamp body and parallel to the flat part and the inclined part may be 17° or more and less than 90°.

One end of the inclined part may be positioned on the plane, and an angle between the inclined part and the plane may be 17° or more and 40° or less.

A distance between the center of the lamp body and one area of the subject may be 7 times or more of a diameter of the lamp body.

A width of the flat portion may be 1.5 times or more and 5.2 times or less of a diameter of the lamp body.

A distance between the center of the lamp body and the flat portion may be 1.5 times or more and 4.5 times or less of a diameter of the lamp body.

The lamp body may be disposed on the subject, the flat part may be disposed on the lamp body, and the external electrode may be disposed under the lamp body.

The external electrode is a first external electrode, and further includes a second external electrode disposed on the lamp body, wherein the lamp body, the first external electrode, and the second external electrode extend in a front-rear direction; , light may be emitted to left and right sides of the lamp body from a light emitting area formed on an outer circumferential surface of the lamp body that is not covered by the first external electrode and the second external electrode.

The inclined portion may be provided to reflect light emitted from the light emitting area to an area shaded under the lamp body by the first external electrode.

A region in which only light reflected by the reflector is incident may be formed under the lamp body.

The inclined portion may be a first inclined portion, and the reflective plate may further include a second inclined portion that is bent and extended toward the external electrode from the other end of the flat portion.

The first inclined portion and the second inclined portion may be symmetrical to each other.

An angle formed by a plane passing through the center of the lamp body and parallel to the flat portion and the first inclined portion and an angle formed by the plane and the second inclined portion may be different from each other.

Dishwasher according to the spirit of the present invention is a washing tank having a washing chamber formed therein; a basket disposed in the washing chamber; and a sterilizing device provided to sterilize the dishes stored in the basket and disposed on the basket, wherein the sterilizing device includes: a lamp body having a cylindrical shape in which rare gases and fluorescent materials for light emission are accommodated; a pair of external electrodes disposed on an outer circumferential surface of the lamp body to face each other in a vertical direction; a pair of light emitting regions formed on the outer peripheral surface of the lamp body, a pair of light emitting regions provided between the pair of external electrodes along the outer periphery of the lamp body and emitting light to left and right sides of the lamp body; and a reflector for reflecting the light emitted from the light emitting region toward the basket.

The reflector may include a first inclined portion and a second inclined portion respectively corresponding to the pair of light emitting regions, and a flat portion connecting the first inclined portion and the second inclined portion.

The first inclined portion and the second inclined portion may reflect light emitted from the pair of light emitting regions to an area shaded by the external electrode.

Only light reflected by the reflector may be incident on one region under the lamp body.

An angle between a plane passing through the center of the lamp body and parallel to the flat part and each of the first and second inclined parts may be 17° or more and less than 90°.

One end of the first and second inclined portions may be positioned on the plane, and an angle formed by each of the first and second inclined portions with the plane may be 17° or more and 40° or less.

According to the spirit of the present invention, the sterilization apparatus can evenly and uniformly irradiate the light of the lamp emitting ultraviolet rays by including the reflector of the improved structure.

According to the idea of the present invention, since the lamp and the reflector of the sterilization device can evenly and uniformly irradiate ultraviolet rays even in a narrow space, the sterilization device can be manufactured in a slim form.

1 is a perspective view illustrating a dishwasher according to an embodiment of the present invention.

FIG. 2 is a side cross-sectional view of the dishwasher shown in FIG. 1 .

FIG. 3 is a view illustrating a state in which a sterilizing apparatus and a washing tub are combined in the dishwasher shown in FIG. 2 .

FIG. 4 is an exploded view of the sterilization apparatus shown in FIG. 3 .

Fig. 5 is a cross-sectional view of the lamp shown in Fig. 4;

6 to 8 are views schematically illustrating a reflector and a lamp according to various embodiments in the sterilization apparatus shown in FIG. 4 .

The configuration shown in the embodiments and drawings described in this specification is only a preferred example of the disclosed invention, and there may be various modifications that can replace the embodiments and drawings of the present specification at the time of filing of the present application.

In addition, the same reference numbers or reference numerals in each drawing in the present specification indicate parts or components that perform substantially the same functions.

In addition, the terms used herein are used to describe the embodiments, and are not intended to limit and/or limit the disclosed invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as "comprises" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, terms including an ordinal number such as "first", "second", etc. used herein may be used to describe various elements, but the elements are not limited by the terms, and the terms are It is used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. The term "and/or" includes a combination of a plurality of related listed items or any of a plurality of related listed items.

On the other hand, the terms "upper", "lower", "front", and "rear end" used in the following description are defined based on the drawings, and the shape and position of each component is not limited by these terms .

1 is a perspective view illustrating a dishwasher according to an embodiment of the present invention. FIG. 2 is a side cross-sectional view of the dishwasher shown in FIG. 1 .

Hereinafter, the sterilization apparatus 300 and the dishwasher 1 including the same will be described. However, this is an example, and it goes without saying that the sterilizer 300 may be applied to other home appliances other than the dishwasher 1 .

The sterilization apparatus 300 of the present invention can be applied to all home appliances requiring sterilization using light. For example, the sterilization device 300 of the present invention may be provided in an air purifier to sterilize air or a filter, may be provided in a shoe manager to sterilize shoes, or may be provided in a clothing manager to sterilize clothes , may be provided in the toothbrush sterilizer to sterilize the toothbrush.

1 to 2 , the dishwasher 1 includes a cabinet 10 forming an exterior, and a washing tub 21 disposed inside the cabinet 10 and forming a washing chamber 20 (or, “tub”) and a door 100 installed in the cabinet 10 to open and close the washing tub 21 .

The cabinet 10 and the washing tub 21 are provided in the shape of a hexahedron having one surface of which is opened so as to be open. Specifically, the front of the cabinet 10 and the washing tub 21 may be opened. The cabinet 10 may include a base 12 provided at a lower side and a top cover 11 provided at an upper side.

The door 100 may be rotatably installed in the cabinet 10 . The door 100 may be rotatably hinged to the lower end of the cabinet 10 . The door 100 may be coupled to the cabinet 10 by a hinge device 30 .

Inside the cabinet 10, a sump unit 40 is provided under the washing tub 21 to collect water used for washing, and a pair of baskets arranged so as to be drawn out from the inside of the cabinet 10 to the outside on which dishes are placed. (50) and a plurality of spray nozzles (71, 72, 73) for spraying the water delivered from the sump unit 40 toward the dishes contained in the pair of baskets 50 may be disposed.

Dishes may be accommodated in the plurality of baskets 50 . The types and sizes of dishes accommodated in the plurality of baskets 50 are not limited. The types of dishes accommodated in the plurality of baskets 50 may include relatively large or small dishes.

The basket 50 may include a first basket 51 and a second basket 52 . The first basket 51 may be disposed above the washing tank 21 . The first basket 51 may be positioned above the second basket 52 . The second basket 52 may be disposed below the washing tank 21 .

The washing tank 21 may include a first guide rack 61 provided to support the first basket 51 . The washing tank 21 may include a second guide rack 62 provided to support the second basket 52 .

The first guide rack 61 and the second guide rack 62 are to be installed inside the washing tub 21 so that the first basket 51 and the second basket 52 can slide toward the front of the washing tub 21 . can

The first guide rack 61 and the second guide rack 62 may be respectively installed on the left side and the right side of the washing tank 21 . The first basket 51 and the second basket 52 may slide along the first guide rack 61 and the second guide rack 62 in the front-rear direction of the washing tank 21 .

The sump unit 40 may be disposed at the center of the bottom of the washing tank 21 to collect washing water used for washing. The sump unit 40 may be provided with a washing pump 41 for pumping the stored water to the spray unit 70 . The washing water pumped by the washing pump 41 may be supplied to the first injection nozzle 71 , the second injection nozzle 72 , and the third injection nozzle 73 to be described later through the supply pipe 80 .

The dishwasher 1 may further include a heater 42 disposed under the washing tub 21 to heat the washing water, and a drain pump 43 disposed under the washing tub 21 to drain the washing water.

The dishwasher 1 may include a spray unit 70 provided to spray washing water. The injection unit 70 includes a first injection nozzle 71 disposed on the upper side of the first basket 51 and an upper side of the second basket 52 , that is, the first basket 51 and the second basket 52 . It may include a second injection nozzle 72 disposed therebetween, and a third injection nozzle 73 disposed under the second basket 52 .

The first injection nozzle 71 is provided to be rotatable. The first spray nozzle 71 may spray washing water toward the dishes stored in the first basket 51 . The second injection nozzle 72 is rotatably provided. The second spray nozzle 72 is provided to spray the washing water toward the dishes accommodated in the first basket 51 and the second basket 52 . The third injection nozzle 73 is rotatably provided. The third spray nozzle 73 is provided to spray the washing water toward the dishes stored in the second basket 52 .

The dishwasher 1 may include a sterilization device 300 provided for sterilizing dishes stored in the

baskets

51 and 52 and/or sterilizing the

baskets

51 and 52 and the washing chamber 20 .

FIG. 3 is a view illustrating a state in which a sterilizing apparatus and a washing tub are combined in the dishwasher shown in FIG. 2 . FIG. 4 is an exploded view of the sterilization apparatus shown in FIG. 3 . Fig. 5 is a cross-sectional view of the lamp shown in Fig. 4;

3 to 5 , the sterilization device 300 may be disposed above the washing tub 21 . The sterilization apparatus 300 may include

housings

301 and 302 , a lamp 330 disposed inside the

housings

301 and 302 , and a reflector 340 reflecting the light of the lamp 330 . Although it is disclosed in the drawings that the sterilization device 300 includes one lamp 330 and one reflector plate 340 , the present invention is not limited thereto, and the sterilization device 300 includes a plurality of lamps 330 and a plurality of A reflector 340 may be included.

The

housings

301 and 302 include a lower housing 302 in which various components including a lamp 330 and a reflector 340 are accommodated therein, and is coupled to the upper end of the lower housing 302 to form an inner space of the lower housing 302 . It may include an upper housing 301 that covers it.

The lower housing 302 includes a lamp accommodating part 302a forming a lamp accommodating space 303 in which the lamp 330 is accommodated and supported, and a printed circuit in which a power source for operating the sterilization device 300 and various electronic components are mounted. It may include an electric length portion 302b forming an electric length accommodating space 304 in which a substrate (not shown) is accommodated.

The lamp accommodating part 302a may have an open bottom surface. The light of the lamp 330 may be incident into the cleaning chamber 20 through the opening 305 of the lamp accommodating part 302a. Specifically, the washing tank 21 may include an opening (not shown) formed at a position corresponding to the opening 305 of the lamp accommodating part 302a, and the lamp accommodating space 303 may be formed through the opening 305 . It may communicate with the washing tank 21 . Accordingly, light emitted from the lamp 330 may be incident on the cleaning chamber 20 through the opening 305 .

The sterilizer 300 may include a spring holder 310 fixed to the lower housing 302 and provided to support both ends of the lamp 330 . Specifically, the spring holder 310 may fix the

cap electrodes

330a and 330b of the lamp 330 . The spring holder 310 may have conductivity and may be electrically connected to the

cap electrodes

330a and 330b. The spring holder 310 may be connected to an inverter (not shown) to apply power.

The sterilization apparatus 300 may include a transparent cover 320 that covers the opening 305 to prevent moisture from the washing chamber 20 from flowing into the lamp accommodating space 303 . The transparent cover 320 may be disposed in the lamp accommodating space 303 . Since the transparent cover 320 may be formed of a substantially transparent or translucent material, light from the lamp 330 may pass through the transparent cover 320 .

A reflective plate 340 may be disposed on the lamp 330 . The reflective plate 340 may include a flat portion 341 formed to be flat and first and second

inclined portions

342 and 343 extending by being bent from left and right ends of the flat portion 341 . A first inclined portion 342 that is bent and extended toward the lamp 330 at the left end of the flat portion 341 corresponds to the first light emitting region 333a, and at the right end of the flat portion 341 , the lamp 330 is formed. ), the second inclined portion 343 that is bent and extended may correspond to the second light emitting region 333b. Each of the flat portion 341 , the first inclined portion 342 , and the second inclined portion 343 may have a rectangular flat plate shape. The flat portion 341 , the first inclined portion 342 , and the second inclined portion 343 may be integrally formed.

The first inclined portion 342 and the second inclined portion 343 may be symmetrically formed. However, the present invention is not limited thereto, and the first inclined portion 342 and the second inclined portion 343 may be formed asymmetrically.

The lamp 330 includes a lamp body 333 having a cylindrical shape in which a rare gas and a fluorescent material for light emission are accommodated,

cap electrodes

330a and 330b fixed to both ends of the lamp body 333, a

cap electrode

330a, 330b) and may include a pair of

external electrodes

332 and 331 electrically connected to each other.

The material of the lamp body 333 may be a quartz tube or borosilicate for efficient transmission of ultraviolet rays. The lamp body 333 is provided in a cylindrical shape and may extend in one direction (eg, a front-rear direction). The lamp body 333 may be provided in a tubular shape in which both ends are blocked. A plurality of

cap electrodes

330a and 330b may be provided and fixed to both ends of the lamp body 333 , respectively.

The lamp body 333 may include a discharge space (S) hollowly provided therein. The sealing gas inside the lamp body 333 may use xenon (Xe) and a xenon mixed gas (Xe, Ar, Ne, etc.). On the inner wall of the lamp body 333, a phosphor 334 capable of converting the light emission wavelength band (172 nm) of xenon into a sterilization wavelength range of 250 nm to 260 nm may be coated.

In order to implement an external electrode fluorescent lamp (EEFL) type lamp,

external electrodes

331 and 332 must be formed on the surface of the lamp body 333 . The

external electrodes

331 and 332 are disposed on the outer surface of the lamp body 333 and may be provided to extend in one direction (eg, a front-rear direction) in which the lamp body 333 extends.

The

external electrodes

331 and 332 may include a plurality of

external electrodes

331 and 332 , and may include a first external electrode 331 and a second external electrode 332 .

The

external electrodes

331 and 332 may be provided in a tape shape on the surface of the lamp body 333 . Materials of the

external electrodes

331 and 332 are not particularly limited as long as they have conductivity, and for example, gold, silver, nickel, carbon, gold palladium, silver palladium, platinum, aluminum, etc. or alloys thereof may be used. . These

external electrodes

331 and 332 may be referred to as band electrodes.

The lamp body 333 may be irradiated toward the subject through the outer surface of the lamp body 333 in which the

band electrodes

331 and 332 are not disposed. In other words, the subject may be irradiated through the exposed surface of the lamp body (or "

light emitting regions

333a and 333b") exposed between the first external electrode 331 and the second external electrode 332 . The

light emitting regions

333a and 333b may be formed as a pair on the left and right sides of the lamp body 333 . The pair of

light emitting areas

333a and 333b may include a first light emitting area 333a corresponding to the first inclined part 342 and a second light emitting area 333b corresponding to the second inclined part 343 . can

An angle θ between the upper and lower ends of the pair of

light emitting regions

333a and 333b and the center O of the lamp body 333 in the cross section of the lamp 330 may be approximately 120°.

The pair of

external electrodes

331 and 332 may include a first external electrode 331 disposed below the lamp body 333 and a second external electrode 332 disposed above the lamp body 333 . .

On the other hand, since the lamp 330 is disposed above the basket 50 which is the subject, when the

light emitting areas

333a and 333b face the lower portion of the lamp 330 , the ultraviolet rays of the lamp 330 are directly incident on the subject. will become In this case, since the ultraviolet rays of the lamp 330 are incident in a dense state, ultraviolet rays cannot be irradiated to a wide area, and parts of the dishes or dishwasher 1 disposed close to the lamp 330 are exposed to strong direct sunlight. There is a risk of exposure and damage.

According to the present disclosure, as the first external electrode 331 of the lamp 330 is disposed between the subject and the lamp body 333 , the direct light of the strong lamp 330 is transmitted from the lamp body 333 to an area of the adjacent subject. It is possible to prevent the incident from being incident, and it is possible to prevent the dishes or parts of the dishwasher 1 from being damaged by direct sunlight. In addition, the light reflected by the reflector 340 may be incident on the region shaded by the first external electrode 331 , and sterilization may be performed.

6 to 8 are views schematically illustrating a reflector and a lamp according to various embodiments in the sterilization apparatus shown in FIG. 4 . Meanwhile, in FIGS. 6 to 8 , the diameter d1 of the lamp body 333 may be approximately 5 mm.

Referring to FIG. 6 , the flat portion 341 may be symmetrically disposed on the basis of a vertical line passing through the center O of the lamp body 333 , and the first inclined portion 342 may include the flat portion 341 . and may be inclined at a predetermined angle a1 with respect to the plane Q (or "first horizontal plane Q") passing through the center O of the lamp body 333 . In this case, the predetermined angle a1 may refer to an angle formed on the side of the ramp 330 with respect to the first inclined portion 342 when the first horizontal plane Q and the first inclined portion 342 meet. . When the first inclined portion 342 and the second inclined portion 343 are symmetrical, the angle a2 between the second inclined portion 343 and the first horizontal plane Q is the first inclined portion 342 and the second inclined portion 342 . 1 It may be the same as the angle a1 formed by the horizontal plane Q. Hereinafter, a case in which the first inclined portion 342 and the second inclined portion 343 are symmetrical will be described as an example. Therefore, the description of the first light emitting area 333a and the first inclined portion 342 will be described with respect to the second light emitting area. It can also be applied to (333b) and the second inclined portion (343). The first horizontal plane Q may be parallel to the irradiation plane P. The irradiation surface P may correspond to a part of the subject.

The distance h1 between the center O of the lamp body 333 and the flat portion 341 may be referred to as a distance h1 between the first horizontal plane Q and the flat portion 341 . The distance h1 between the center O of the lamp body 333 and the flat portion 341 may be approximately 1.5 times the diameter d1 of the lamp body 333 . The width v1 of the flat portion 341 may be approximately 1.5 times the diameter d1 of the lamp body 333 . The distance h2 between the center O of the lamp body 333 and the irradiation surface P is the diameter d1 of the lamp body 333 in consideration of the distance between the narrow basket 50 and the sterilizer 300 . ) can be approximately 7 times the However, the present invention is not limited thereto, and the distance h2 between the center O of the lamp body 333 and the irradiation surface P may be greater than 7 times the diameter d1 of the lamp body 333 . For example, the distance between the center O of the lamp body 333 and the irradiation surface P may be 18 times the diameter d1 of the lamp body 333 .

On the other hand, the area to which the direct light emitted from the lamp body 333 reaches is referred to as a direct light irradiation area (D), and the area to which the light emitted from the lamp body 333 is reflected by the reflector 340 and arrives is referred to as the reflected light irradiation area. It can be called (R).

In this case, the region of the lamp body 333 closest to the irradiation surface P may be a lower portion of the lamp body 333 . Since the lower portion of the lamp body 333 is covered by the first external electrode 331 , the direct light of the lamp 330 may not directly reach the lower portion of the first external electrode 331 , or the degree of reaching thereof may be minimized. That is, a region that direct light does not reach may be formed on the irradiation surface P, and this region may correspond to a region of the irradiation surface P close to the lamp body 333 .

For example, a point passing through the center O of the lamp body 333 and extending in the vertical direction and a point where the irradiation surface P meets (or "center (O') of the irradiation surface P") and the point The periphery of may be shaded by the first external electrode 331 . In other words, the direct light irradiation area D may not extend to the center O' of the irradiation surface P and its periphery. The direct light irradiation area D to which the direct light emitted from the first light-emitting area 333a reaches and the direct light irradiation area to which the direct light emitted from the second light-emitting area 333b reaches may not be connected and may be spaced apart from each other.

The first inclined part 342 may guide the light emitted from the first light emitting area 333a to be incident on an area to which direct light does not reach. Only reflected light may be irradiated to a region of the irradiated surface P formed under the lamp body 333 and to which direct light does not reach by the first external electrode 331 .

Specifically, the lower end of the first inclined portion 342 may be disposed on the first horizontal plane Q, and the angle a1 between the first horizontal surface Q and the first inclined portion 342 is approximately 17°. can In this case, the right edge of the reflected light irradiating region R formed by light emitted from the first light emitting region 333a and reflected on the first inclined portion 342 is aligned with the center O' of the irradiated surface P can be reached The reflected light irradiation area R formed by the first inclined portion 342 may extend in a direction away from the center O' of the irradiation surface P (eg, a left direction), and at least a portion of the direct light irradiation area (D) may overlap. On the other hand, when considering the diffraction of light and the diffuse reflection on the irradiation surface P, the angle a1 between the first horizontal plane Q and the first inclined portion 342 is 17° even if it is approximately 15° or more and less than 17°. It is possible to achieve the same functions and effects as in the case of the present invention. Therefore, it goes without saying that all values of 17° in the following may be replaced with 15°.

However, the present invention is not limited thereto. When the distance h2 between the center O of the lamp body 333 and the irradiation surface P is greater than 7 times the diameter d1 of the lamp body 333, the right end of the reflected light irradiation area R is irradiated It may extend to the right through the center O' of the plane P. That is, even when the distance h2 between the center O of the lamp body 333 and the irradiation surface P is greater than 7 times the diameter d1 of the lamp body 333, the reflector 340 is the irradiation surface ( A reflected light irradiation region R may be formed to cover the center O' of P). Therefore, the reflector 340 is the first outside even when the distance h2 between the center O of the lamp body 333 and the irradiation surface P is greater than 7 times the diameter d1 of the lamp body 333 . It is possible to prevent a shadow from being formed by the electrode 331 .

In addition, when the distance h2 between the center O of the lamp body 333 and the irradiation surface P is greater than 7 times the diameter d1 of the lamp body 333, the center ( Even if the distance h1 between O) and the flat part 341 is greater than 1.5 times the diameter d1 of the lamp body 333, the reflective plate 340 is shaded at the center O' of the irradiation surface P. formation can be prevented. However, since the space between the cabinet 10 and the washing tub 21 is narrow, preferably, the distance h1 between the center O of the lamp body 333 and the flat part 341 is the lamp body 333 . It may be 1.5 times or more and 4.5 times or less of the diameter (d1) of

According to some embodiments, as the width v1 of the flat portion 341 increases, the first inclined portion 342 moves away from the center O of the lamp body 333, and the first inclined portion 342 is The left end of the reflected light irradiation area R formed by the reflective light may further extend to the left. At this time, since the overlapping portion with the direct light irradiation region D in the reflected light irradiation region R may further increase, the width v1 of the flat portion 341 is equal to the diameter d1 of the lamp body 333 . It can be greater than 1.5 times. For example, the width v1 of the flat portion 341 may be 1.5 times or more and 5.2 times or less of the diameter d1 of the lamp body 333 .

Referring to FIG. 7 , the flat portion 341 may be symmetrically disposed with respect to a vertical line passing through the center O of the lamp body 333 , and the first inclined portion 342 may include the flat portion 341 . and may be inclined at a predetermined angle a1 with respect to the plane Q (or "first horizontal plane Q") passing through the center O of the lamp body 333 . When the first inclined portion 342 and the second inclined portion 343 are symmetrical, the angle a2 between the second inclined portion 343 and the first horizontal plane Q is the first inclined portion 342 and the second inclined portion 342 . 1 It may be the same as the angle a1 formed by the horizontal plane Q. Hereinafter, a case in which the first inclined portion 342 and the second inclined portion 343 are symmetrical will be described as an example. Therefore, the description of the first light emitting area 333a and the first inclined portion 342 will be described with respect to the second light emitting area. It can also be applied to (333b) and the second inclined portion (343). The first horizontal plane Q may be parallel to the irradiation plane P. The irradiation surface P may correspond to a part of the subject. The distance h2 between the center O of the lamp body 333 and the irradiation surface P is the diameter d1 of the lamp body 333 in consideration of the distance between the narrow basket 50 and the sterilizer 300 . ) can be approximately 7 times the

The distance h1 between the center O of the lamp body 333 and the flat portion 341 may be referred to as a distance h1 between the first horizontal plane Q and the flat portion 341 . The distance h1 between the center O of the lamp body 333 and the flat portion 341 may be approximately 1.5 times the diameter d1 of the lamp body 333 . The width v1 of the flat portion 341 may be approximately 1.5 times the diameter d1 of the lamp body 333 . The distance h2 between the center O of the lamp body 333 and the irradiation surface P is the diameter d1 of the lamp body 333 in consideration of the distance between the narrow basket 50 and the sterilizer 300 . ) can be approximately 7 times the

The first inclined part 342 may guide the light emitted from the first light emitting area 333a to be incident on an area where direct light does not reach. Only reflected light may be irradiated to a region of the irradiated surface P formed under the lamp body 333 and to which direct light does not reach by the first external electrode 341 .

Specifically, the lower end of the first inclined portion 342 may be disposed on the first horizontal plane Q, and the angle a1 between the first horizontal surface Q and the first inclined portion 342 is approximately 40°. can In this case, the reflected light irradiation area R formed by light emitted from the first light emitting area 333a and reflected on the first inclined portion 342 may overlap the center O' of the irradiation surface P, and , the left edge of the reflected light irradiation area R may abut against the direct light irradiation area D formed by the light emitted from the first light emitting area 333a.

However, the present invention is not limited thereto. As the width v1 of the flat part 341 increases, the first inclined part 342 moves away from the center O of the lamp body 333 and the reflected light irradiation area R formed by the first inclined part 342 is increased. ), the left end may further extend to the left. At this time, the overlapping portion of the reflected light irradiation area R and the direct light irradiation area D may be further increased so that there is no shadow between the reflected light irradiation area R and the direct light irradiation area D, so that the flat portion 341 The width v1 may be greater than 1.5 times the diameter d1 of the lamp body 333 . For example, the width v1 of the flat portion 341 may be 1.5 times or more and 5.2 times or less of the diameter d1 of the lamp body 333 .

In addition, when the width v1 of the flat portion 341 is greater than 1.5 times the diameter d1 of the lamp body 333 , the left end of the reflected light irradiation area R is the center O of the lamp body 333 . When the distance h2 between the irradiated surface P and the diameter d1 of the lamp body 33 is 7 times or more, it may contact or overlap the right end of the direct light irradiating area D. In other words, as the width v1 of the flat portion 341 increases, the distance h2 between the center O of the lamp body 333 and the irradiation surface P may increase. For example, when the width v1 of the flat portion 341 is 5.2 times the diameter d1 of the lamp body 333, the distance h2 between the center O of the lamp body 333 and the irradiation surface P ) may be 18 times the diameter d1 of the lamp body 333 .

However, the present invention is not limited thereto. According to some embodiments, the distance h1 between the center O of the lamp body 333 and the flat portion 341 may be 1.5 times or more and 4.5 times or less of the diameter d1 of the lamp body 333 . In this range, the left end of the reflected light irradiation area R formed by the first inclined portion 342 overlaps the direct light irradiation area D, and the right end of the reflected light irradiation area R is the irradiation surface P It may contact or overlap with the center (O') of

Meanwhile, an angle a1 between the first horizontal plane Q and the first inclined portion 342 may be greater than approximately 17° and less than 40°. In this case, the reflected light irradiation area R may partially overlap the direct light irradiation area D while passing through the center O' of the irradiation surface P. That is, FIGS. 6 and 7 show that the distance h1 between the center O and the flat portion 341 of the lamp body 333 and the width v1 of the flat portion 341 are the lamp body 333 diameter (d1). Shows the boundary value of the numerical range (eg, 17° or more and 40° or less) that the angle a1 between the first horizontal plane Q and the first inclined part 342 can have in the same state as approximately 1.5 times of It is a drawing.

When the lower end of the first inclined portion 342 is disposed on the first horizontal plane Q, and the angle a1 between the first horizontal surface Q and the first inclined portion 342 is greater than about 17° and less than 40°, Preferably, the distance h1 between the center O of the lamp body 333 and the flat portion 341 is approximately 1.5 times the diameter d1 of the lamp body 333, and the width of the flat portion 341 ( v1) may be approximately 1.5 times the diameter d1 of the lamp body 333 .

However, the present invention is not limited thereto. Referring to FIG. 8 , an angle a1 between the first horizontal plane Q and the first inclined portion 342 may exceed approximately 40°. An angle a1 between the first horizontal plane Q and the first inclined portion 342 may be greater than 40° and less than 90°.

The flat portion 341 may be symmetrically disposed on the basis of a vertical line passing through the center O of the lamp body 333 , and the first inclined portion 342 is parallel to the flat portion 341 and the lamp body 333 . ) may be inclined at a predetermined angle a1 with respect to the plane Q (or the “first horizontal plane Q”) passing through the center O. When the first inclined portion 342 and the second inclined portion 343 are symmetrical, the angle a2 formed between the second inclined portion 343 and the first horizontal plane Q is the first inclined portion 343 and the second inclined portion 343 . 1 It may be the same as the angle a1 formed by the horizontal plane Q. Hereinafter, a case in which the first inclined portion 342 and the second inclined portion 343 are symmetrical will be described as an example. Therefore, the description of the first light emitting area 333a and the first inclined portion 342 will be described with respect to the second light emitting area. It can also be applied to (333b) and the second inclined portion (343). The first horizontal plane Q may be parallel to the irradiation plane P.

The distance h2 between the center O of the lamp body 333 and the irradiation surface P is the diameter d1 of the lamp body 333 in consideration of the distance between the narrow basket 50 and the sterilizer 300 . ) can be approximately 7 times the The width v1 of the flat portion 341 may be approximately 1.5 times the diameter d1 of the lamp body 333 . The distance h1 between the center O of the lamp body 333 and the flat portion 341 may be approximately 1.5 times the diameter d1 of the lamp body 333 .

The first inclined portion 342 includes a right portion of the direct light irradiation region D formed by light emitted from the first light emitting region 333a and reflected light formed by light reflected by the first inclined portion 342 . Since the left side of the irradiation region R is not connected to each other, it is possible to prevent a shadow from being formed.

Specifically, the lower end of the first inclined portion 342 may not be disposed on the first horizontal plane Q. The lower end of the first inclined portion 342 may be disposed on a plane T (or “second horizontal plane T”) parallel to the first horizontal plane Q and disposed below the first horizontal plane Q. have. The separation distance h3 between the first horizontal plane Q (or the center O of the lamp body 333 ) and the second horizontal plane T may be less than or equal to 1.5 times the diameter d1 of the lamp body 333 . have. The lamp 330 may be disposed in a space surrounded by the reflector 340 . The angle a3 between the second horizontal plane T and the first inclined part 342 is the same as the angle a1 between the first horizontal plane Q and the first inclined part 342 and the size is the same. can do. An angle between the first horizontal plane Q and/or the second horizontal plane T and the first inclined portion 342 may exceed approximately 40°.

In this case, the reflected light irradiation area R formed by light emitted from the first light emitting area 333a and reflected on the first inclined portion 342 may overlap the center O' of the irradiation surface P, and , the left edge of the reflected light irradiation area R may contact or overlap the direct light irradiation area D formed by the light emitted from the first light emitting area 333a.

However, the present invention is not limited thereto. According to some embodiments, the distance between the center O of the lamp body 333 and the irradiation surface P may be 7 times or more of the diameter d1 of the lamp body 333 . Even when the distance h2 between the center O of the lamp body 333 and the irradiation surface P is more than 7 times the diameter d1 of the lamp body 333, the reflected light irradiation area R is both left and right. Since the reflective plate 340 may be extended to pass through the center O' of the irradiation surface P and overlap the direct light irradiation area D, the reflective plate 340 may prevent a shadow from being formed by the first external electrode 331 . For example, the distance h2 between the center O of the lamp body 333 and the irradiation surface P may be 18 times the diameter d1 of the lamp body 333 .

As the width v1 of the flat part 341 increases, the first inclined part 342 moves away from the center O of the lamp body 333 and the reflected light irradiation area R formed by the first inclined part 342 is increased. ), the left end may further extend to the left. At this time, since the overlapping portion with the direct light irradiation region D in the reflected light irradiation region R may further increase, the width v1 of the flat portion 341 is equal to the diameter d1 of the lamp body 333 . It can be greater than 1.5 times. For example, the width v1 of the flat portion 341 may be 1.5 times or more and 5.2 times or less of the diameter d1 of the lamp body 333 .

However, the present invention is not limited thereto. According to some embodiments, the distance h1 between the center O of the lamp body 333 and the flat portion 341 may be 1.5 times or more and 4.5 times or less of the diameter d1 of the lamp body 333 . When the distance h1 between the center O of the lamp body 333 and the flat portion 341 is 1.5 times or more and 4.5 times or less of the diameter d1 of the lamp body 333, the first inclined portion 342 is The reflected light irradiation area R formed by the left side may contact or overlap the direct light irradiation area D, and the right side may contact or overlap the center O' of the irradiation surface P.

In the above description so far, the angles a1 and a2 between the

inclined portions

342 and 343 and the first horizontal plane Q, the width v1 of the flat portion 341, the center O of the lamp body 333 and the flat The distance h1 between the part 341, the distance h2 between the center O of the lamp body 333 and the irradiation surface P, and the center O of the lamp body 333 and the second horizontal plane ( The distance h3 between T) can be treated as an independent variable.

In the above, specific embodiments have been shown and described. However, it is not limited to the above embodiments, and those of ordinary skill in the art to which the invention pertains can make various changes without departing from the spirit of the invention described in the claims below. .

Claims

a lamp body having a cylindrical shape in which a rare gas and a fluorescent material for light emission are accommodated;

An external electrode disposed on an outer circumferential surface of the lamp body and extending in the longitudinal direction of the lamp body, the subject and the lamp body to prevent direct light from the lamp body from being incident on an area of the subject adjacent to the lamp body an external electrode disposed therebetween; and

The sterilization apparatus comprising a; a reflector for guiding the light emitted from the lamp body so that the reflected light is incident on an area of the subject where direct light from the lamp body does not reach.
According to claim 1,

The reflector is

a flat portion disposed on the opposite side to the external electrode with the lamp body interposed therebetween;

A sterilizing device including an inclined portion bent toward the external electrode from one end of the flat portion.
3. The method of claim 2,

An angle between a plane passing through the center of the lamp body and parallel to the flat part and the inclined part is 17° or more and less than 90°.
4. The method of claim 3,

One end of the inclined portion is positioned on the plane, and the angle between the inclined portion and the plane is 17° or more and 40° or less.
5. The method of claim 4,

A distance between the center of the lamp body and one area of the subject is 7 times or more of a diameter of the lamp body.
3. The method of claim 2,

The width of the flat portion is 1.5 times or more and 5.2 times or less of the diameter of the lamp body.
3. The method of claim 2,

The distance between the center of the lamp body and the flat portion is 1.5 times or more and 4.5 times or less of the diameter of the lamp body.
3. The method of claim 2,

The lamp body is disposed above the subject, the flat portion is disposed on the lamp body, and the external electrode is disposed below the lamp body.
9. The method of claim 8,

The external electrode is a first external electrode,

Further comprising a second external electrode disposed on the upper portion of the lamp body,

The lamp body, the first external electrode, and the second external electrode extend in a front-rear direction,

A sterilizing apparatus in which light is emitted to left and right sides of the lamp body from a light emitting area formed on an outer circumferential surface of the lamp body that is not covered by the first external electrode and the second external electrode.
10. The method of claim 9,

the inclined part

The sterilizing device is provided to reflect the light emitted from the light emitting area to a shaded area under the lamp body by the first external electrode.
11. The method of claim 10,

A sterilizing device in which only the light reflected by the reflecting plate is incident under the lamp body.
3. The method of claim 2,

The inclined portion is a first inclined portion,

The sterilizing device further comprising a second inclined portion extending from the other end of the reflective plate toward the external electrode from the other end of the flat portion.
13. The method of claim 12,

The first inclined portion and the second inclined portion are symmetrical to each other.
13. The method of claim 12,

An angle formed by a plane passing through the center of the lamp body and parallel to the flat portion and the first inclined portion and an angle formed by the plane and the second inclined portion are different from each other.