Patent Description:
An air cleaner is understood as an apparatus that suctions and filters polluted air and then discharges filtered air, and is constructed to purify an indoor space such as a home or office. In general, the air cleaner includes a blower constructed to suction external air and discharge air, and a filter disposed inside the blower to filter dust, bacteria, or the like in the air. In this structure, the air cleaner may further include a flow converter constructed to adjust a discharge direction of the air discharged from the blower.

In recent years, beyond an indoor air cleaner used in a large space such as the home or the office, a portable air cleaner in a small and light form for easy portability has been developed to purify air in a narrow space such as a studio or an interior of a vehicle. Such portable air cleaner may be understood as an apparatus suitable for a user who has a life pattern of going out or moving to several places rather than staying for a long time in one place such as the home or the office, and may have an advantage of being easily carried and easily used by the user at a desired place.

In the portable air cleaner, a filter for physical particles such as the dust, a filter for a chemical substance such as gas, a filter for microorganisms such as the bacteria and viruses, and the like may be used in combination. In addition to this, a UVC sterilizer for sterilizing the filter may be further included.

In some implementations, the UVC sterilizer may be constructed to irradiate UVC light using a UVC LED. Because such UCV light may have a harmful effect on a human body, it is necessary to prevent the UCV light from leaking to the outside of the air cleaner. In addition, when the UVC light is irradiated, heat may be generated from the UVC LED, which may shorten a lifespan of the air cleaner or may induce a failure of the air cleaner, so that there is a need for a method for dissipate the heat. <CIT> relates to an air purifier that performs sterilization or deodorization using a light emitting diode (LED) that emits ultraviolet rays.

The present invention is directed to an air cleaner capable of effectively dissipating heat generated when irradiating sterilizing light to the outside, including a sterilizer having a plurality of discharge portions.

The present invention is also directed to an air cleaner capable of blocking a light leakage phenomenon in which sterilizing light leaks to the outside through a sterilizing casing having a non-flat top surface.

According to one aspect of the subject matter described in this application, an air cleaner can include a housing including a suction portion configured to suction air from an outside of the housing and a discharge portion configured to discharge air from the housing, a frame disposed inside the housing, a sterilizer disposed inside the frame and configured to sterilize the suctioned air, a filter assembly disposed in the frame and configured to filter air inside the housing, a blower disposed inside the frame and configured to move air inside the housing, a flow converter that is disposed on a top surface of the housing and that is configured to guide a flow of air inside the housing and discharge air inside the housing to an outside of the housing, and a guide configured to guide a direction of the flow converter. The sterilizer can include a sterilizing light source configured to generate sterilizing light, a first sterilizing casing configured to accommodate the sterilizing light source, and a second sterilizing casing that is coupled to a lower portion of the first sterilizing casing and that supports the first sterilizing casing and the sterilizing light source, where a portion of the first sterilizing casing is spaced apart from the second sterilizing casing to define a space therebetween that is configured to dissipate heat generated from the sterilizing light source.

Implementations according to this aspect can include one or more of the following features. For example, the sterilizer can further include a main discharge portion that defines an opening at a central portion of a top surface of the first sterilizing casing to irradiate the sterilizing light generated by the sterilizing light source, a first discharge portion that defines an opening at the top surface of the first sterilizing casing to dissipate the heat generated from the sterilizing light source, and a second discharge portion that defines an opening at a sidewall of the first sterilizing casing to dissipate the heat generated from the sterilizing light source.

In some implementations, a portion of the suction portion can overlap the second discharge portion. In some examples, the frame can include an air inlet that defines an opening at a sidewall of the frame and that is in fluid communication with the suction portion, and the suction portion, the air inlet, and the second discharge portion can be in fluid communication with each other.

In some implementations, the first sterilizing casing can include a protrusion protruding from the sidewall of the first sterilizing casing toward the second sterilizing casing, the second sterilizing casing can include a coupling groove defined at a position corresponding to the protrusion, and the first sterilizing casing and the second sterilizing casing can be coupled to each other by fastening between the protrusion and the coupling groove. In some examples, the protrusion and the coupling groove can include a plurality of protrusions and a plurality of coupling grooves, respectively, and a number of the plurality of protrusions can be equal to a number of the plurality of coupling grooves.

In some examples, the protrusion can include a first protrusion that includes a first set of protrusions and a second protrusion that includes a second set of protrusions, and the first protrusion and the second protrusion can have different extension lengths. In some examples, an extension length of the first protrusion can be greater than an extension length of the second protrusion, and each of the second set of protrusions can be disposed on each of both sides of the first set of protrusions, respectively.

In some implementations, the protrusion can further include a third protrusion protruding from the top surface of the first sterilizing casing toward the second sterilizing casing, and the first sterilizing casing and the sterilizing light source can be coupled to each other by the third protrusion. In some implementations, the first protrusion can pass through the coupling groove to couple the coupling groove, and the second protrusion can be in contact with a portion of a top surface of the second sterilizing casing adjacent to the coupling groove.

In some implementations, the sterilizer can further include a third discharge portion that is disposed between the first protrusion and the second protrusion and that recesses in a direction away from the second sterilizing casing to dissipate the heat generated from the sterilizing light source. In some implementations, the air cleaner can further include a battery that is disposed inside the second sterilizing casing and that is configured to supply power, where the sterilizing light source and the battery can be electrically connected to each other by a harness.

In some examples, one of the plurality of coupling grooves can have an area greater than an area of each of the remaining coupling grooves, and the harness can extend through the at least one coupling groove. In some examples, a protrusion corresponding to the at least one coupling groove among the plurality of protrusions can protrude farther in a circumferential direction of the first sterilizing casing than the remaining protrusions.

In some implementations, the top surface of the first sterilizing casing can have a concave shape. In some examples, the top surface of the first sterilizing casing can have a downward slope toward a top surface of the second sterilizing casing from an edge portion to the central portion of the top surface of the first sterilizing casing.

In some examples, the first discharge portion can include a plurality of through-holes having different extension lengths extending in a circumferential direction of the top surface of the first sterilizing casing. In some examples, the first discharge portion can include a first through-hole, a second through-hole, and a third through-hole, and an extension length of the third through-hole can be greater than an extension length of the second through-hole, and the extension length of the second through-hole can be greater than an extension length of the first through-hole, where the extension length of each of the first through-hole, the second through-hole, and the third through-hole extends in the circumferential direction of the top surface of the first sterilizing casing.

In some implementations, the first discharge portion can further include a fourth through-hole having an extension length less than the first through-hole. In some examples, each of the first through-hole, the second through-hole, the third through-hole, and the fourth through-hole can include a plurality of through-holes.

Hereinafter, an overall configuration of an exemplary air cleaner <NUM> will be described with reference to <FIG>.

<FIG> is a diagram illustrating the exemplary air cleaner <NUM>, <FIG> is a diagram illustrating a cross-sectional view of the exemplary air cleaner <NUM> of <FIG>, and <FIG> is a diagram illustrating an exploded perspective view of the exemplary air cleaner <NUM>.

The air cleaner <NUM> can include a housing <NUM> and <NUM>, a blower <NUM> that provides an airflow inside the housing <NUM> and <NUM>, a filter assembly <NUM> that purifies air flowing inside the housing <NUM> and <NUM>, and a flow converter <NUM> that discharges purified air.

The air cleaner <NUM> can further include a sterilizer <NUM> for removing foreign substances contained in the air flowing inside the housing <NUM> and <NUM> or for sterilizing the filter assembly <NUM>, a dust sensor assembly <NUM> that senses or detects dust contained in the suctioned air, and a battery <NUM> that supplies power to a controller disposed inside the housing <NUM> and <NUM>.

The controller can include at least one PCB and one or more components that will be described later.

The housing <NUM> and <NUM> defines a space for accommodating internal components and a portion of an exterior of the air cleaner <NUM>. The housing <NUM> and <NUM> can have any shapes capable of providing the above-described space. In some implementations, the housing <NUM> and <NUM> can include a first housing <NUM> defining an upper portion and a second housing <NUM> defining a lower portion, and the first housing <NUM> and the second housing <NUM> together can have a hollow cylindrical shape.

The blower <NUM>, the filter assembly <NUM>, the flow converter <NUM>, the sterilizer <NUM>, the dust sensor assembly <NUM>, and the battery <NUM> can be disposed inside the housing <NUM> and <NUM>.

The housing <NUM> and <NUM> can include a suction portion <NUM> that is in fluid communication with an exterior and an interior of the housing <NUM> and <NUM>. For example, the suction portion <NUM> defines an opening at the housing <NUM> and <NUM>, and can be provided at a position that is spaced apart from an upper end and a lower end of the housing <NUM> and <NUM>. In some implementations, the suction portion <NUM> can be disposed in the second housing <NUM> and may not be disposed in the first housing <NUM>. In some implementations, the suction portion <NUM> can be provided at a position that is spaced apart from upper and lower ends of the second housing <NUM>.

In some implementations, the housing <NUM> and <NUM> can further include a discharge portion that is in fluid communication with the exterior and the interior of the housing <NUM> and <NUM>. The discharge portion can define an opening at the housing <NUM> and <NUM>, and can be provided at the upper end of the housing <NUM> and <NUM>. In some implementations, the discharge portion can be disposed in the first housing <NUM> and may not be disposed in the second housing <NUM>. In some implementations, the discharge portion can be provided at an upper end of the first housing <NUM>, for example, between the first housing <NUM> and the flow converter <NUM>.

In some implementations, the suction portion <NUM> can have a shape of a grill that defines an opening at a sidewall of the second housing <NUM>, and the discharge portion can define an opening at a top surface of the first housing <NUM>.

The flow converter <NUM> can be provided to be in fluid communication with the discharge portion at the upper end of the first housing <NUM>, and a portion of the flow converter <NUM> can be detachably coupled to the first housing <NUM>. The flow converter <NUM> can include a discharge grill <NUM> that guides the air located inside the housing <NUM> and <NUM> to the outside of the housing <NUM> and <NUM>.

The flow converter <NUM> can be located above the suction portion <NUM>. For example, when the blower <NUM> provides the airflow, the air located outside the housing <NUM> and <NUM> can be introduced into the housing <NUM> and <NUM> through the suction portion <NUM> and then discharged to the outside of the housing <NUM> and <NUM> through the discharge portion and the discharge grill <NUM>.

The housing <NUM> and <NUM> can include a frame <NUM> and <NUM> that is disposed below the flow converter <NUM> and that accommodates the blower <NUM>, the filter assembly <NUM>, the sterilizer <NUM>, the dust sensor assembly <NUM>, and the battery <NUM> therein.

In some implementations, the frame <NUM> and <NUM> can include a first frame <NUM> that defines an upper portion and that accommodates the blower <NUM> therein, and a second frame <NUM> that defines a lower portion and that accommodates the filter assembly <NUM>, the sterilizer <NUM>, the dust sensor assembly <NUM>, and the battery <NUM> therein, and the first frame <NUM> and the second frame <NUM> can have a hollow cylindrical shape together.

A guide support frame <NUM> can be coupled to a top surface of the first frame <NUM>, and a guide <NUM> that guides a direction of the flow converter <NUM> can be seated on and coupled to a portion of a top surface of the guide support frame <NUM>.

The filter assembly <NUM> and the sterilizer <NUM> can be sequentially stacked inside the second frame <NUM>. For example, the filter assembly <NUM> can be stacked on the sterilizer <NUM> inside the second frame <NUM>.

The filter assembly <NUM> can include a filter capable of removing the foreign substances contained in the air. For example, the filter can include various filters corresponding to a type of the foreign substances to be removed. By way of further example, the filter can include at least one of a dust filter that removes the dust in the air, a biochemical filter that removes organisms such as mites in the air, and a deodorizing filter that removes substances that cause odors (e.g., hydrogen sulfide, methyl mercaptan, trimethylamine, and the like).

The filter assembly <NUM> can be detachably coupled to the interior of housing <NUM> and <NUM>.

In some implementations, the filter assembly <NUM> can be located above the suction portion <NUM> and below the flow converter <NUM>. For example, the air flowing from the suction portion <NUM> toward the discharge grill <NUM> can be purified by the filter assembly <NUM>.

In some implementations, the filter assembly <NUM> can be disposed above the suction portion <NUM> and below the blower <NUM>. The filter assembly is disposed above the blower <NUM> because a flow speed of the air flow provided by the blower <NUM> can be reduced by the filter assembly <NUM> if the filter assembly <NUM> is located above the blower <NUM>.

The sterilizer <NUM> can remove the microorganisms contained in the air or fungi remaining in the filter assembly <NUM>, and can be disposed below the filter assembly <NUM>. For example, the sterilizer <NUM> is disposed below the filter assembly <NUM> to remove the microorganisms included in the air before the microorganisms flow into the filter assembly <NUM> and to remove the microorganisms located in the filter assembly <NUM>.

The sterilizer <NUM> can be disposed at a vertical level to overlap with the suction portion <NUM>. For example, the sterilizer <NUM> and the suction portion <NUM> can overlap in a vertical direction. In some implementations, the sterilizer <NUM> can first sterilize the microorganisms contained in the air flowed into the housing <NUM> and <NUM> through the suction portion <NUM>.

The battery <NUM> can be disposed below the blower <NUM>, the filter assembly <NUM>, the flow converter <NUM>, and the sterilizer <NUM>. For example, the battery <NUM> can be disposed inside the housing <NUM> and <NUM> and at the lower end of the housing <NUM> and <NUM>.

The battery <NUM> can be disposed inside the housing <NUM> and <NUM> and at the lower end of the housing <NUM> and <NUM> because of its large weight relative to the same volume (a high density). Further, this is because the battery <NUM> can be stably implemented in a specific place after moving the air cleaner <NUM>.

In some implementations, the battery <NUM> can be disposed below the suction portion <NUM>. For example, the air flowed through the suction portion <NUM> can flow upward toward the flow converter <NUM>, so that the air may not pass through the battery <NUM>. When the air cleaner <NUM> is portable, a strength of the airflow provided by the blower <NUM> can be restricted. As the battery <NUM> is positioned below the suction portion <NUM>, a volume of a space controlled by the blower <NUM> may be reduced.

Accordingly, the air flowed into the housing <NUM> and <NUM> through the suction portion <NUM> can flow to the filter assembly <NUM> after being sterilized by the sterilizer <NUM>. The air purified through the filter assembly <NUM> can pass through the blower <NUM> and flow from the interior of the housing <NUM> and <NUM> to the exterior of the housing <NUM> and <NUM> through the discharge grill <NUM>.

Hereinafter, the housing <NUM> and <NUM> will be described with reference to <FIG> and <FIG>.

<FIG> is a diagram illustrating examples of the housing <NUM> and <NUM> and the frame <NUM> and <NUM>, and <FIG> is a diagram illustrating examples of the second frame <NUM> and the sterilizer <NUM>.

Referring to <FIG> and <FIG>, the housing <NUM> and <NUM> can include the first housing <NUM> and the second housing <NUM> that define the exterior and respectively define the upper and lower portions of the air cleaner <NUM>, and the frame <NUM> and <NUM> can include the first frame <NUM> covered by the first housing <NUM> and the second frame <NUM> covered by the second housing <NUM>.

In some implementations, the second frame <NUM> can include a second upper frame <NUM> defining an upper portion and a second lower frame <NUM> defining a lower portion. The second upper frame <NUM> and the second lower frame <NUM> can be integrally provided to define the second frame <NUM>, but the present invention may not be necessarily limited thereto. For example, the second upper frame <NUM> and the second lower frame <NUM> can be provided separately, and a lower portion of the second upper frame <NUM> and an upper portion of the second lower frame <NUM> can be coupled to each other to define the second frame <NUM>.

In some implementations, the filter assembly <NUM> and the sterilizer <NUM> can be accommodated in the second upper frame <NUM>, and the dust sensor assembly <NUM> and the battery <NUM> can be accommodated in the second lower frame <NUM>.

A portion of the blower <NUM> and the flow converter <NUM> can be accommodated in the first frame <NUM>, and the dust sensor assembly <NUM>, the battery <NUM>, the sterilizer <NUM>, and the filter assembly <NUM> can be accommodated in the second frame <NUM>. In some implementations, the first frame <NUM> can accommodate the guide <NUM> that is disposed between the blower <NUM> and the flow converter <NUM> and that is configured to guide a state change of the flow converter <NUM>, and the guide support frame <NUM> for supporting the guide <NUM>.

The first housing <NUM> can be provided to be movable or detachable relative to the second housing <NUM>. For example, the first housing <NUM> can be detachably coupled to the second housing <NUM>. Accordingly, a user may periodically replace the filter assembly <NUM>. In some implementations, when the first housing <NUM> and the second housing <NUM> are separated from each other, the filter assembly <NUM> may be exposed to the user.

The second housing <NUM> can have a hollow cylindrical shape. The suction portion <NUM> can be disposed at the position that is spaced apart from the lower end of the second housing <NUM>. In some implementations, the air cleaner <NUM> is disposed in a vehicle. For example, a smoother air flow can be provided when the air cleaner <NUM> is erected in a component like a cup holder of the vehicle.

In some implementations, the suction portion <NUM> can have a shape of the grill having one or more openings at the sidewall of the second housing <NUM> at the position that is spaced apart from the lower end of the second housing <NUM>.

The suction portion <NUM> is sufficient to provide the features described above as long as it has a shape that is in fluid communication with the exterior and the interior of the second housing <NUM>. In some implementations, the suction portion <NUM> can include a plurality of through-holes. For example, each of the plurality of through-holes can have a rectangular shape.

In some implementations, the first housing <NUM> can have a shape that does not interfere with the movement of the flow converter <NUM> to accommodate the flow converter <NUM> that is movable. For example, the first housing <NUM> can have a hollow cylindrical shape connected to the upper end of the second housing <NUM>.

A portion of the flow converter <NUM> can be accommodated in an upper portion of the first housing <NUM> and can be movable. A portion of the blower <NUM> can be accommodated in a lower portion of the first housing <NUM>. Accordingly, the air passed through the blower <NUM> can be discharged to the outside of the housing <NUM> and <NUM> through the discharge grill <NUM> provided to be movable.

The first frame <NUM> can have a height less than a height of the first housing <NUM>, and the second frame <NUM> can have a height corresponding to a height of the second housing <NUM>.

The battery <NUM>, the dust sensor assembly <NUM>, the sterilizer <NUM>, and the filter assembly <NUM> can be accommodated in the second frame <NUM>. In some implementations, the first frame <NUM> that accommodates the blower <NUM> therein can be coupled to the top surface of the second frame <NUM>.

The second frame <NUM> can include a dust sensor assembly accommodating portion and a battery accommodating portion that are disposed at a lower portion of the second frame <NUM> and that respectively accommodate the dust sensor assembly <NUM> and the battery <NUM> therein, and can include a filter assembly detachable portion <NUM> that is disposed in an upper portion of the second frame <NUM> and detachably accommodates the filter assembly <NUM> therein, and a sterilization fastening portion disposed between the filter assembly detachable portion <NUM> and the battery accommodating portion to accommodate the sterilizer <NUM> therein. In addition, the second frame <NUM> can further include a frame fastening portion <NUM> disposed in the upper portion of the second frame <NUM> to fix the first frame <NUM> to the second frame <NUM>.

In some examples, "accommodating" may refer to being provided at a vertical level to overlap with a component to be accommodated.

The battery accommodating portion can be disposed at the lower portion of the second frame <NUM>. The frame fastening portion <NUM> can be disposed at the upper portion of the second frame <NUM>. The filter assembly detachable portion <NUM> can be disposed between the battery accommodating portion and the frame fastening portion <NUM>.

In some implementations, the housing <NUM> and <NUM> can further include an inner housing <NUM> for moving the second frame <NUM> with respect to the second housing <NUM>.

The inner housing <NUM> can be coupled to an inner circumferential surface of the second housing <NUM>, and can be detachably coupled to an outer circumferential surface of the second frame <NUM>. For example, the inner housing <NUM> can be coupled to the inner circumferential surface of the second housing <NUM>, and can be detachably coupled to an outer circumferential surface of the battery accommodating portion.

Accordingly, the second frame <NUM> can be provided to be detachable with respect to the second housing <NUM>. For example, after separating the first housing <NUM> and the second housing <NUM> from each other to replace the filter assembly <NUM>, the user may detach the second frame <NUM> from the second housing <NUM>.

In some implementations, the second frame <NUM> can move upward relative to the second housing <NUM>. For example, the second housing <NUM> can move downward relative to the second frame <NUM>.

This structure can expose the filter assembly <NUM> to the user when the first housing <NUM> and the second housing <NUM> are separated from each other.

The second frame <NUM> can further include an air inlet <NUM> that is in fluid communication with the suction portion <NUM>. For example, the air inlet <NUM> can be defined through a portion of the sidewall of the second frame <NUM>. Accordingly, the air suctioned by the suction portion <NUM> can be introduced into the sterilizer <NUM> after passing through the air inlet <NUM>.

The air inlet <NUM> can overlap with the suction portion <NUM> partially. A predetermined height of the suction portion <NUM> can be greater than a height of the air inlet <NUM>.

Accordingly, the air flowed through the suction portion <NUM> can flow through the air inlet <NUM>, and the air passed through the air inlet <NUM> can be sterilized by the sterilizer <NUM>.

The air inlet <NUM> is sufficient to provide the features described above as long as it has a shape that is in fluid communication with the interior and the exterior of the second frame <NUM>. In some implementations, the air inlet <NUM> can have a rectangular shape and can include a plurality of air inlets spaced apart from each other in a circumferential direction.

The filter assembly detachable portion <NUM> can include a filter assembly opening <NUM> that is an opening defined above the air inlet <NUM> to provide a space in which the filter assembly <NUM> can move, and a filter assembly fixing rib <NUM> that couples the filter assembly <NUM> disposed inside the filter assembly detachable portion <NUM> through the filter assembly opening <NUM>.

The filter assembly opening <NUM> can have a shape corresponding to a shape of the filter assembly <NUM>.

The filter assembly fixing rib <NUM> can protrude from an inner circumferential surface of the second frame <NUM> to couple the filter assembly <NUM> inserted into the second frame <NUM>. For example, the filter assembly fixing rib <NUM> can protrude inwardly of the second frame <NUM> from a lower end of the filter assembly opening <NUM>.

The frame fastening portion <NUM> can be disposed at an upper end of the second frame <NUM> to couple the first frame <NUM> that accommodates the blower <NUM> to the second frame <NUM>.

Hereinafter, the exemplary blower <NUM> will be described with reference to <FIG>.

<FIG> is a diagram illustrating examples of the first housing <NUM> and the guide support frame <NUM>, the blower <NUM>, and <FIG> is a diagram illustrating an internal configuration of the blower <NUM>.

Referring to <FIG>, the blower <NUM> can include a fan housing and a fan assembly accommodated in the fan housing.

The fan housing can include a main fan housing <NUM> that defines a structural frame of the fan housing, and a fan housing base <NUM> that supports the main fan housing <NUM> from the bottom. In some implementations, the fan housing can further include a lower fan housing coupling portion <NUM> disposed beneath the main fan housing <NUM> to couple the main fan housing <NUM> and the first housing <NUM> to each other, and an upper fan housing coupling portion <NUM> disposed on a top surface of the main fan housing <NUM> to couple the main fan housing <NUM> and the guide support frame <NUM> to each other.

The fan assembly can include a hollow hub <NUM>, a shroud <NUM> spaced apart from the hub <NUM>, and a blade <NUM> that connects the hub <NUM> and the shroud <NUM> to each other.

The hub <NUM>, the blade <NUM>, and the shroud <NUM> can be integrally provided and can rotate together. The shroud <NUM> can be disposed beneath the hub <NUM> and surround a portion of the hub <NUM>. In some implementations, a diameter of the hub <NUM> can be less than a diameter of the shroud <NUM>.

The blade <NUM> can include a plurality of blades, and extend from an outer circumferential surface of the hub <NUM> toward the shroud <NUM>. In some implementations, the plurality of blades can be spaced apart from each other at equal spacings along a circumferential direction from the outer circumferential surface of the hub <NUM>.

The plurality of blades can radially extend from the outer circumferential surface of the hub <NUM> to be connected to the shroud <NUM>. In some implementations, each blade <NUM> can extend such that a position thereof is changed in a vertical direction, a left and right direction, and a front and rear direction.

The fan assembly can further include a driver <NUM> that rotates the hub <NUM>, the blade <NUM>, and the shroud <NUM>, and a shaft <NUM> that can be rotated by the driver. In some implementations, when the driver <NUM> is provided as a motor, the driver <NUM> can include a stator that generates a rotating magnetic field, and a rotor that rotates by the magnetic field generated by the stator, and the shaft <NUM> can be coupled to the rotor.

The main fan housing <NUM> can accommodate the fan assembly from one side, and the fan housing base <NUM> can accommodate the fan assembly from the other side.

The fan housing base <NUM> can be coupled to the other end of the main fan housing <NUM> to rotatably support the fan assembly.

The shaft <NUM> and the driver <NUM> can be disposed in the fan housing. For example, the shaft <NUM> and the driver <NUM> can be disposed in at least one of the main fan housing <NUM> or the fan housing base <NUM>.

Accordingly, the fan assembly may be rotatably disposed inside the fan housing.

However, when the fan housing is directly connected to the second frame <NUM>, vibration or noise generated by the fan assembly is easily exposed to the outside. Therefore, in order to reduce the exposure of the vibration or the noise generated in the fan assembly to the outside, the fan housing can be fixed to the second frame <NUM> by a separate component.

In some implementations, the blower <NUM> can be accommodated in the first frame <NUM> and coupled to the second frame <NUM>.

For example, the first frame <NUM> can fix the fan housing therein and can be coupled to an upper end of the second frame <NUM>. That is, the first frame <NUM> can be coupled to the frame fastening portion <NUM> of the second frame <NUM>.

The first frame <NUM> can have a height greater than a height in the vertical direction of the fan housing, so that even when the fan housing is coupled therein, the first frame <NUM> can have a free space beneath the fan housing. In some implementations, a USB PCB connectable to an USB <NUM> can be disposed in the free space.

Accordingly, the vibration or the noise generated in the fan assembly may not be directly transmitted to the second frame <NUM>. As a result, an amount of vibration or noise generated in the fan assembly leaking to the outside can be reduced.

The guide support frame <NUM> on which the guide <NUM> that guides an operation of the flow converter <NUM> while coupling the fan housing is seated can be coupled to the upper portion of the first frame <NUM>.

In some implementations, the first frame <NUM> and the guide support frame <NUM> can be coupled to each other in a hook scheme.

Hereinafter, the exemplary flow converter <NUM> will be described with reference to <FIG>.

<FIG> is a diagram illustrating examples of the flow converter <NUM> and a view in which a discharge housing <NUM> and <NUM> is transparently shown.

Referring to <FIG>, the guide <NUM> can be coupled to the guide support frame <NUM>, and the flow converter <NUM> can be rotatably coupled to the guide <NUM>.

For example, the flow converter <NUM> can include the discharge housing <NUM> and <NUM>, a display <NUM> disposed in the middle of a top surface <NUM> of the discharge housing <NUM> and <NUM>, and a discharge grill <NUM> disposed between the display <NUM> and the discharge housing <NUM> and <NUM>. In some implementations, the display <NUM> can be a button <NUM> because the display <NUM> may also perform a role of a button.

The discharge housing <NUM> and <NUM> can include a guide coupling portion <NUM> disposed therein and rotatably coupled to the guide <NUM>, a button PCB seating frame <NUM> disposed inside the discharge housing <NUM> and <NUM> and disposed on the guide coupling portion <NUM> to support a button PCB <NUM> from the bottom, and a button seating frame <NUM> disposed on the button PCB seating frame <NUM> to cover the button PCB <NUM> and to support the button <NUM> from the bottom.

In some implementations, the discharge housing <NUM> and <NUM> can include a first discharge housing <NUM> that defines an upper portion and a second discharge housing <NUM> that defines a lower portion.

The discharge housing <NUM> and <NUM> can be spaced apart from the guide support frame <NUM> by the guide <NUM>. Accordingly, a space required for the discharge housing <NUM> and <NUM> to rotate can be defined between the flow converter <NUM> and the guide support frame <NUM>. Accordingly, an interference between the discharge housing <NUM> and <NUM> interferes and the blower <NUM> can be blocked when the discharge housing <NUM> and <NUM> rotates.

The guide coupling portion <NUM> can be fixed to the guide <NUM> to rotate the discharge housing <NUM> and <NUM>. The guide coupling portion <NUM> can rotate the discharge housing <NUM> and <NUM>. For example, a ball and a ball joint can be used for the guide coupling portion <NUM>. In some implementations, the discharge housing <NUM> and <NUM> can be rotated or moved at various angles with respect to the guide coupling portion <NUM>.

Hereinafter, with reference to <FIG> and <FIG>, the sterilizer <NUM>, the dust sensor assembly <NUM>, and the battery <NUM> will be described.

<FIG> is a diagram illustrating examples of the sterilizer <NUM>, the dust sensor assembly <NUM>, and the battery <NUM>.

Referring to <FIG> and <FIG>, the sterilizer <NUM> can include a sterilizing light source <NUM> that generates sterilizing light, a first sterilizing casing <NUM> that accommodates the sterilizing light source <NUM> therein, and a second sterilizing casing <NUM> coupled to a lower portion of the first sterilizing casing <NUM> to support the first sterilizing casing <NUM> and the sterilizing light source <NUM>.

The first sterilizing casing <NUM> can include a plurality of discharge portions defined to be fluid communication with an interior and an exterior of the first sterilizing casing <NUM>. Accordingly, the air introduced through the suction portion <NUM> can flow into the first sterilizing casing <NUM> to perform cooling of the sterilizing light source <NUM>. In some implementations, the sterilizing light generated from the sterilizing light source <NUM> can be emitted through the plurality of discharge portions.

The sterilizing light source <NUM> can include a sterilizing PCB and an irradiation portion mounted on the sterilizing PCB. The irradiation portion can be provided as a UVC LED.

The second sterilizing casing <NUM> can include a top surface frame coupled to the first sterilizing casing <NUM>, a side surface frame extending downward from a circumference of the top surface frame, and a bottom surface frame connected to a lower end of the side frame and facing away from the top surface frame.

The dust sensor assembly accommodating portion and the battery accommodating portion can be disposed inside the second sterilizing casing <NUM>. Accordingly, the dust sensor assembly <NUM> and the battery <NUM> can be accommodated in the second sterilizing casing <NUM> in the lower portion of the second frame <NUM>.

The side frame of the second sterilizing casing <NUM> can further include an opening for inserting or withdrawing the dust sensor assembly <NUM> and the battery <NUM>, or measuring a dust concentration of the air through the dust sensor assembly <NUM>.

The dust sensor assembly <NUM> can include a dust sensor that measures the concentration of the dust and a fan that provides the airflow inside the second sterilizing casing <NUM>.

The sterilizing light source <NUM> and the first sterilizing casing <NUM> can be accommodated together in the second upper frame <NUM> that defines the upper portion of the second frame <NUM>, and the second sterilizing casing <NUM> can be accommodated in the second lower frame <NUM> that defines the lower portion of the second frame <NUM>.

Hereinafter, an exemplary overall direction of the air flow and PCBs will be described with reference to <FIG>.

<FIG> is a diagram illustrating an example of an air flow in a state in which the flow converter <NUM> is not rotated, and <FIG> is a diagram illustrating an air flow in a state in which the flow converter <NUM> is rotated.

As described above, the suction portion <NUM> can be disposed to be spaced apart from the lower end of the second housing <NUM>. Accordingly, the air located outside the housing <NUM> and <NUM> can flow into the housing <NUM> and <NUM> through the suction portion <NUM>.

The air flowed into the housing <NUM> and <NUM> through the suction portion <NUM> can be sterilized by the sterilizer <NUM>. In some implementations, the air flowing through the sterilizer <NUM> can flow upward after cooling the sterilizing PCB included in the sterilizing light source <NUM>. For example, the air sterilized through the sterilizer <NUM> can flow toward the blower <NUM> within the housing <NUM> and <NUM>. In some implementations, the foreign substances such as the dust can be removed from the air flowing toward the blower <NUM> by the filter assembly <NUM>.

The air flowed through the blower <NUM> can flow upward toward the flow converter <NUM>. In some implementations, a position of the discharge grill <NUM> can be changed depending on whether the flow converter <NUM> is moved, and the air passed through the blower <NUM> can flow toward the discharge grill <NUM> whose position is changed. Accordingly, the air introduced through the suction portion <NUM> can flow upward and be discharged to the outside through the discharge grill <NUM>.

As described above, the air is introduced through the suction portion <NUM> and flows upward, so that the air does not pass through the battery <NUM>. Therefore, it is possible to efficiently purify the air even by an airflow providing force of the blower <NUM> limited in the portable air cleaner <NUM>.

In some implementations, the air cleaner <NUM> can further include a plurality of PCBs in addition to the sterilizing PCB.

For example, the button <NUM> that receives an input from the user can be disposed at an upper end of the flow converter <NUM>. In some implementations, a button PCB that processes information input to the button <NUM> can be disposed below the button <NUM>.

In some implementations, when a function such as displaying the information or lighting is added to the button <NUM>, a display PCB that controls the display function can be further provided.

In some implementations, as described above with respect to <FIG>, when the USB <NUM> is inserted into the air cleaner <NUM>, a utility PCB that processes information input from the USB can be provided.

In some implementations, as described above with respect to <FIG>, the sterilizing PCB for controlling the sterilizer <NUM> can be provided.

In some implementations, the battery <NUM> can have an electric PCB that supplies power to the above-described PCBs.

The button PCB, the display PCB, the utility PCB, the sterilizing PCB, and the electric PCB can be arranged from top to bottom in the order described.

The battery <NUM> can be connected to at least one of the above-described PCBs through a harness to supply the power.

In some examples, in the case of the display PCB, the utility PCB, the sterilizing PCB, and the electric PCB, disconnection of the harness is not a problem even when being directly connected to the battery <NUM>. However, when the button PCB is directly connected to the battery <NUM>, a position thereof is inevitably changed based on the movement of the flow converter <NUM>, so that the disconnection of the harness may be a problem.

In order to solve the above problem, a scheme in which the power is supplied to the display PCB through the battery <NUM> and the button PCB is supplied with the power from the display PCB can be implemented.

Hereinafter, the exemplary sterilizer <NUM> will be described with reference to <FIG> and <FIG>.

<FIG> is a diagram illustrating the exemplary sterilizer <NUM>, and <FIG> is a diagram illustrating an exploded perspective view of the exemplary sterilizer <NUM>.

Referring to <FIG> and <FIG>, the sterilizer <NUM> included in the air cleaner <NUM> can include the sterilizing light source <NUM> that generates the sterilizing light, and the sterilizing casing <NUM> and <NUM> that accommodates and supports the sterilizing light source <NUM>, and the sterilizing casing can include the first sterilizing casing <NUM> that accommodates the sterilizing light source <NUM>, and the second sterilizing casing <NUM> coupled to the lower portion of the first sterilizing casing <NUM> to support the first sterilizing casing <NUM> and the sterilizing light source <NUM>.

The sterilizing light source <NUM> can include the sterilizing PCB, and the irradiation portion mounted on the sterilizing PCB, and the irradiation portion can be provided as the UVC LED.

The dust sensor assembly <NUM> and the battery <NUM> can be accommodated inside the second sterilizing casing. The dust sensor assembly <NUM> and the battery <NUM> can be detachably coupled to the second sterilizing casing <NUM>, but the present invention is not necessarily limited thereto. For example, only one of the dust sensor assembly <NUM> or the battery <NUM> can be detachably coupled to the second sterilizing casing <NUM>. Alternatively, each of the dust sensor assembly <NUM> and the battery <NUM> can be coupled to the second sterilizing casing <NUM> so as not to be detached therefrom.

In some implementations, a portion of the first sterilizing casing <NUM> can be spaced apart from the second sterilizing casing <NUM>, so that the heat generated from the sterilizing light source <NUM> can be dissipated through a space between the at least a portion of the first sterilizing casing <NUM> and the second sterilizing casing <NUM>.

The sterilizing casing <NUM> and <NUM> can include the plurality of discharge portions. The sterilizing light generated from the sterilizing light source <NUM> can be irradiated through the plurality of discharge portions, and the heat generated from the sterilizing light source <NUM> can be dissipated through the plurality of discharge portions. For example, at least one of the plurality of discharge portions can be defined to be in fluid communication with the suction portion <NUM> of the housing <NUM> and <NUM> at a position between the first sterilizing casing <NUM> and the second sterilizing casing <NUM>, and can serve as a heat dissipating portion for dissipating the heat generated from the sterilizing light source <NUM>.

For example, the sterilizer <NUM> can further include a main discharge portion <NUM> that defines an opening at a central portion of a top surface of the first sterilizing casing <NUM> and to which the sterilizing light generated by the sterilizing light source <NUM> is irradiated, a first discharge portion <NUM> that defines one or more opening at the top surface of the first sterilizing casing <NUM> to dissipate the heat generated from the sterilizing light source <NUM>, and a second discharge portion <NUM> that defines an opening at a sidewall of the first sterilizing casing <NUM> to dissipate the heat generated from the sterilizing light source <NUM>.

In some implementations, the sterilizing light generated by the sterilizing light source <NUM> can be irradiated through the first discharge portion <NUM> and/or the second discharge portion <NUM> in addition to the main discharge portion <NUM>. However, UVC light generated through the UVC LED included in the sterilizing light source <NUM> may be harmful to a human body, so that it is necessary to block the UVC LED from leaking directly to the outside of the housing <NUM> and <NUM>.

In some implementations, a portion of the suction portion <NUM> can be disposed at a position to overlap with the second discharge portion <NUM>, and the suction portion <NUM> and the second discharge portion <NUM> can be disposed to be in fluid communication with each other. In some implementations, the suction portion <NUM> can be disposed at a position not overlapping with the first discharge portion <NUM>, and thus, the suction portion <NUM> and the first discharge portion <NUM> can be disposed so as not to be in fluid communication with each other. However, because a separate blocking member such as a partition is not disposed between the suction portion <NUM> and the first discharge portion <NUM>, the suction portion <NUM> and the first discharge portion <NUM> may be indirectly in fluid communication with each other.

Hereinafter, the sterilizing light and a heat dissipating structure of the exemplary sterilizing light source <NUM> will be described with reference to <FIG>, <FIG>, <FIG> and <FIG>, and <FIG> together.

<FIG> and <FIG> are diagrams illustrating an upper perspective view and a lower perspective view of the exemplary first sterilizing casing <NUM>, respectively, <FIG> is a diagram illustrating side views of an exemplary coupling structure of the first sterilizing casing <NUM> and the second sterilizing casing <NUM>.

Referring to <FIG>, <FIG>, <FIG> and <FIG>, and <FIG> together, the first sterilizing casing <NUM> can include a protrusion protruding from a sidewall of the first sterilizing casing <NUM> toward the second sterilizing casing <NUM>, the second sterilizing casing <NUM> can include a coupling groove <NUM> and <NUM> defined at a position corresponding to the protrusion, and the first sterilizing casing <NUM> and the second sterilizing casing <NUM> can be coupled to each other by fastening between the protrusion and the coupling groove <NUM> and <NUM>.

In some implementations, the protrusion and the coupling groove <NUM> and <NUM> can include a plurality of protrusions and a plurality of coupling grooves, respectively. In some implementations, the number of plurality of protrusions and the number of plurality of coupling grooves may be the same.

In some implementations, the protrusion can include a first protrusion <NUM> and a second protrusion <NUM>, and the first protrusion <NUM> and the second protrusion <NUM> can have different extension lengths. For example, the extension length can be an extension length in the vertical direction, that is, in a direction from the sidewall of the first sterilizing casing <NUM> toward a top surface of the second sterilizing casing <NUM>.

An extension length of the first protrusion <NUM> can be greater than an extension length of the second protrusion <NUM>, and each second protrusion <NUM> can be disposed on each of both sides of the first protrusion <NUM>. For example, two second protrusions <NUM> can be respectively disposed on both sides of one first protrusion <NUM> along a circumferential direction of the first sterilizing casing <NUM>.

The first protrusion <NUM> can pass through the coupling groove <NUM> and <NUM> to be fastened to each other, and the second protrusion <NUM> can contact a portion adjacent to the coupling groove <NUM> and <NUM> of the top surface of the second sterilizing casing <NUM> without passing through the coupling groove <NUM> and <NUM>. Accordingly, the second discharge portion <NUM> can be defined between the sidewall of the first sterilizing casing <NUM> and the top surface of the second sterilizing casing <NUM>, and the heat generated from the sterilizing light source <NUM> can be dissipated through the second discharge portion <NUM>.

The sterilizer <NUM> can further include a third discharge portion <NUM> defined at a position between the first protrusion <NUM> and the second protrusion <NUM> to be recessed in a direction away from the top surface of the second sterilizing casing <NUM> to dissipate the heat generated from the sterilizing light source <NUM>. Accordingly, the third discharge portion <NUM> can be further provided between the sidewall of the first sterilizing casing <NUM> and the top surface of the second sterilizing casing <NUM>, and the heat generated from the sterilizing light source <NUM> can be dissipated through the third discharge portion <NUM>.

For example, in addition to the first discharge portion <NUM> that defines an opening at the top surface of the first sterilizing casing <NUM> to dissipate the heat generated from the sterilizing light source <NUM>, the sterilizer <NUM> can further include the second discharge portion <NUM> and the third discharge portion <NUM> that defines an opening at the sidewall of the first sterilizing casing <NUM> to dissipate the heat generated from the sterilizing light source <NUM>, so that the heat generated from the sterilizing light source <NUM> can be effectively dissipated in many directions.

In some implementations, the first discharge portion <NUM> may have a main purpose of irradiating the sterilizing light generated from the sterilizing light source <NUM> rather than dissipating the heat generated from the sterilizing light source <NUM> together with the main discharge portion <NUM>. On the other hand, the second discharge portion <NUM> and the third discharge portion <NUM> may have a main purpose of dissipating the heat generated from the sterilizing light source <NUM> rather than irradiating the sterilizing light generated from the sterilizing light source <NUM>. Accordingly, the main discharge portion <NUM> and the first discharge portion <NUM> may together refer to a light irradiation portion, and the second discharge portion <NUM> and the third discharge portion <NUM> may together refer to a heat dissipating portion.

In some implementations, the top surface of the first sterilizing casing <NUM> can have a shape in which a center portion thereof is concave compared to an edge portion thereof. According to the invention, the top surface of the first sterilizing casing <NUM> can have a downward slope ward the top surface of the second sterilizing casing <NUM> from the edge portion to the center portion.

In some implementations, the first discharge portion <NUM> can include a plurality of through-holes 312a, 312b, 312c, and 312d having different extension lengths extending in a circumferential direction of the top surface of the first sterilizing casing <NUM>.

In some implementations, the first discharge portion <NUM> can include a first through-hole 312a, a second through-hole 312b, and a third through-hole 312c, and extension lengths of the first through-hole 312a, the second through-hole 312b, and the third through-hole 312c extending in the circumferential direction of the first sterilizing casing can gradually increase in this order. In some implementations, the first discharge portion <NUM> can further include a fourth through-hole 312d having an extension length less than an extension length of the first through-hole 312a. Each of the first through-hole 312a, the second through-hole 312b, the third through-hole 312c, and the fourth through-hole 312d can include a plurality of through-holes.

In some implementations, the fourth through-hole 312d can be defined between two third through-holes 312c adjacent to each other or between two second through-holes 312b adjacent to each other, but the present invention is not necessarily limited thereto. For example, the fourth through-hole 312d can be defined between two first through-holes 312a adjacent to each other.

As the first to third through-holes 312a to 312c are defined in the non-flat top surface of the first sterilizing casing <NUM>, when the sterilizing light generated from the sterilizing light source <NUM> is irradiated through the first discharge portion <NUM>, the sterilizing light can be irradiated in a non-vertical, inclined direction, for example, in a direction toward a central shaft of the sterilizer <NUM>. Accordingly, a light leakage phenomenon in which the sterilizing light irradiated from the sterilizer <NUM> leaks to the outside can be blocked.

The protrusion can further include a third protrusion <NUM> extending from the top surface of the first sterilizing casing <NUM> toward the top surface of the second sterilizing casing <NUM> and protruding in the vertical direction, and the first sterilizing casing <NUM> and the sterilizing light source <NUM> can be coupled to each other by the third protrusion <NUM>.

In some implementations, the battery <NUM> for supplying the power can be accommodated inside the second sterilizing casing <NUM>. For example, the battery <NUM> and the sterilizing light source <NUM> can be electrically connected to each other by the harness.

In some implementations, the dust sensor assembly <NUM> that measures the dust in the air can be further accommodated inside the second sterilizing casing <NUM>, and the battery <NUM> and the dust sensor assembly <NUM> can also be electrically connected to each other by the harness. The dust sensor assembly <NUM> can include the dust sensor that measures the concentration of the dust in the air and the fan capable of providing the airflow inside the second sterilizing casing <NUM>.

In some implementations, at least one coupling groove <NUM> of the plurality of coupling grooves <NUM> and <NUM> can be defined to have a larger area than other coupling grooves <NUM> to provide a space in which the harness extends. The harness can extend through the at least one coupling groove <NUM>. In some implementations, the at least one coupling groove <NUM> may be a component that allows the first sterilizing casing <NUM> and the second sterilizing casing <NUM> to be coupled, and may be a component that provides a movement path of the harness that electrically connects the sterilizing light source <NUM> accommodated in the first sterilizing casing <NUM> with the battery <NUM> accommodated in the second sterilizing casing <NUM>. Therefore, hereinafter, a coupling groove not penetrated by the harness among the plurality of coupling grooves <NUM> and <NUM> may refer to a first coupling groove <NUM>, and a coupling groove penetrated by the harness among the plurality of coupling grooves <NUM> and <NUM> may refer to a second coupling groove <NUM>.

In some implementations, a protrusion <NUM> corresponding to the second coupling groove <NUM> among the plurality of protrusions can protrude farther in the circumferential direction of the first sterilizing casing <NUM> than other protrusions. For example, the protrusion <NUM> corresponding to the second coupling groove <NUM> may be a component providing the movement path of the harness, and may refer to a fourth protrusion <NUM>.

The second sterilizing casing <NUM> can include a dust sensor inlet <NUM> that defines an opening at the sidewall of the second sterilizing casing <NUM> to introduce the air into the second sterilizing casing <NUM>, and a dust sensor discharge portion <NUM> that defines an opening at the sidewall of the second sterilizing casing <NUM> to discharge the air inside the second sterilizing casing <NUM>. Therefore, when the fan included in the dust sensor assembly <NUM> provides the airflow, after the air is introduced through the dust sensor inlet <NUM>, the concentration of dust in the introduced air can be measured by the dust sensor, and then the air from which the concentration of dust is measured can be discharged through the dust sensor discharge portion <NUM>.

The second sterilizing casing <NUM> can further include a dust sensor exposing portion <NUM> that defines an opening at the sidewall of the second sterilizing casing <NUM> to remove the dust accumulated in the dust sensor.

Hereinafter, an exemplary arrangement structure in the second frame <NUM> of the sterilizer <NUM> will be described with reference to <FIG>.

<FIG> is a diagram illustrating a side view of examples of the sterilizer <NUM>, the filter assembly <NUM>, and the second frame <NUM>.

Referring to <FIG>, the second upper frame <NUM> can include the air inlet <NUM> that defines an opening at the sidewall of the second upper frame <NUM> and that is in fluid communication with the suction portion <NUM>. The suction portion <NUM>, the air inlet <NUM>, and the second discharge portion <NUM> may be in fluid communication with each other.

Therefore, the heat dissipated from the sterilizing light source <NUM> can be dissipated into the second frame <NUM> through the second discharge portion <NUM> and then dissipated to the outside through the air inlet <NUM> and the suction portion <NUM> in turn.

As described above, according to the air cleaner <NUM>, at least one discharge portion <NUM> of the plurality of discharge portions <NUM>, <NUM>, <NUM>, and <NUM> included in the sterilizer <NUM> may be in fluid communication with the suction portion <NUM> included in the housing <NUM> and <NUM>. Accordingly, the heat generated when irradiating the sterilizing light may be effectively dissipated to the outside.

Claim 1:
An air cleaner (<NUM>) comprising:
a housing (<NUM>, <NUM>) including a suction portion (<NUM>) configured to suction air from an outside of the housing (<NUM>, <NUM>) and a discharge portion configured to discharge air from the housing (<NUM>, <NUM>);
a frame (<NUM>, <NUM>) disposed inside the housing (<NUM>, <NUM>);
a sterilizer (<NUM>) disposed inside the frame (<NUM>, <NUM>) and configured to sterilize the suctioned air;
a filter assembly (<NUM>) disposed in the frame (<NUM>, <NUM>) and configured to filter air inside the housing (<NUM>, <NUM>);
a blower (<NUM>) disposed inside the frame (<NUM>, <NUM>) and configured to move air inside the housing (<NUM>, <NUM>);
a flow converter (<NUM>) that is disposed on a top surface of the housing (<NUM>, <NUM>) and that is configured to guide a flow of air inside the housing (<NUM>, <NUM>) and discharge air from inside the housing (<NUM>, <NUM>) to an outside of the housing (<NUM>, <NUM>); and
a guide (<NUM>) configured to guide a direction of the flow converter (<NUM>),
wherein the sterilizer includes:
a sterilizing light source (<NUM>) configured to generate sterilizing light,
a first sterilizing casing (<NUM>) configured to accommodate the sterilizing light source (<NUM>), and
a second sterilizing casing (<NUM>) that is coupled to a lower portion of the first sterilizing casing (<NUM>) and that supports the first sterilizing casing (<NUM>) and the sterilizing light source (<NUM>),
wherein a portion of the first sterilizing casing (<NUM>) is spaced apart from the second sterilizing casing (<NUM>) to define a space therebetween that is configured to dissipate heat generated from the sterilizing light source (<NUM>), and
characterized in that:
a top surface of the first sterilizing casing (<NUM>) has a downward slope toward a top surface of the second sterilizing casing (<NUM>) from an edge portion to the central portion of the top surface of the first sterilizing casing (<NUM>).