KR20180087488A - Ultrasound operating apparatus and system having the same - Google Patents

Abstract

Disclosed is an ultrasound operating device. According to one aspect of the present invention, provided is an ultrasound operating device comprises: a handpiece body having a space part therein; a suction hole formed at one end of the handpiece body so as to allow air to flow from the outside; an exhaust hole formed at the other end of the handpiece body so that air inside the handpiece body is discharged to the outside; an ultrasound generation unit coupled to the handpiece body for generating ultrasound for a procedure; and a cooling fan disposed in the handpiece body for discharging air introduced into the suction hole out to the exhaust hole through the space part in the handpiece body so as to discharge heat in the handpiece body to the outside.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an ultrasound imaging apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an ultrasound imaging apparatus and a system having the same.

Recently, various treatments for skin beauty and obesity treatment have been developed, and among these various treatments, there is a growing interest in non-invasive procedures.

On the other hand, ultrasonic waves have been extensively used for non-invasive procedures, and ultrasound medical instruments using focused ultrasound such as high intensity focused ultrasound (HIFU) have recently come into the spotlight.

For example, an ultrasound medical device that irradiates a high-intensity focused ultrasound wave to a skin tissue to perform non-invasive procedures for skin beauty such as face lifting or skin tightening, or a high intensity focused ultrasound Ultrasound medical devices have been proposed that non-invasively burn or dissolve adipose tissue and perform non-invasive procedures for the treatment of obesity.

Korean Patent Registration No. 10-1269918 (issued on May 31, 2013)

SUMMARY OF THE INVENTION The present invention provides an ultrasonic treatment apparatus which improves the heat radiation performance inside the handpiece and improves the reliability of the product.

According to an aspect of the present invention, there is provided a handpiece comprising: a handpiece body having a space therein; an air inlet formed at one end of the handpiece body to allow air to flow from the outside; An ultrasonic wave generating unit coupled to the handpiece body for generating an ultrasonic wave for performing an operation, and an ultrasonic wave generating unit disposed inside the handpiece body, for controlling the air introduced into the air inlet such that heat inside the handpiece body is discharged to the outside, And a cooling fan for discharging the air to an exhaust port through a space portion inside the piece main body.

The exhaust port may be formed to face the intake port.

The cooling fan can be installed on the exhaust port in the handpiece body.

The cooling fan may be arranged to align with the position of the exhaust port.

The ultrasonic wave generating unit includes a driving unit installed inside the handpiece body and providing a driving force for linear movement of the ultrasonic wave generating unit, And a control unit installed inside the handpiece body for controlling the ultrasonic wave generating unit, the driving unit, and the power source unit, wherein the cooling fan is configured to generate ultrasonic waves The heat generated from at least one of the unit, the drive unit, the power supply unit, and the control unit can be discharged to the outside.

The control unit includes a printed circuit board, and the printed circuit board can be disposed extending from the air inlet to the air outlet side along the longitudinal direction of the handpiece body.

The power supply unit includes a battery, and the battery may be disposed on the cooling fan in the handpiece body.

The ultrasonic treatment apparatus may further include a holder for holding the handpiece body.

The mounting base may be provided with a mounting space into which the one end or the other end of the handpiece body is inserted so as to support the handpiece body in an upright state.

The mounting base may be formed with a through hole which is connected to the inlet or outlet of the handpiece body when the handpiece body is mounted and through which air is introduced from the outside or air is discharged to the outside.

The ultrasonic treatment apparatus further includes a cartridge body detachably coupled to the handpiece body, and the ultrasonic generating unit may be installed inside the cartridge body.

The handpiece body includes a grip portion gripped by the operator and a head portion extending from the grip portion, and a mounting space for engaging with the cartridge body so that the cartridge body can be mounted is formed at one side of the head portion.

In order to cool the fluid filled in the main cartridge body unit, the mounting space is filled with air introduced into the air inlet and discharged to the air outlet As shown in FIG.

The cartridge body may be positioned between the intake port and the exhaust port.

The intake port may be formed on the upper surface of the head portion, and the exhaust port may be formed on the lower surface of the grip portion.

According to the present invention, the air flow path is formed in the handpiece and the cooling fan is installed, so that the heat dissipation performance of the handpiece can be improved and the reliability of the product can be improved.

1 is a perspective view illustrating an ultrasonic operation apparatus according to an embodiment of the present invention;
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an ultrasonic treatment apparatus,
FIG. 3 and FIG. 4 are sectional views showing the inside of an ultrasonic treatment apparatus according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view illustrating an air flow between a handpiece and a cradle of an ultrasonic treatment apparatus according to an embodiment of the present invention; FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

In addition, the term " coupled " is used not only in the case of direct physical contact between the respective constituent elements in the contact relation between the constituent elements, but also means that other constituent elements are interposed between the constituent elements, Use them as a concept to cover each contact.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an ultrasonic treatment apparatus according to the present invention will be described in detail with reference to the accompanying drawings. Referring to the accompanying drawings, the same or corresponding components are denoted by the same reference numerals, A description thereof will be omitted.

According to the present embodiment, high intensity focused ultrasound (HIFU) is irradiated inside skin tissues to perform face lifting or skin tightening as shown in FIGS. 1 to 5 The ultrasound imaging apparatus 10 for performing skin beauty treatment includes a hand unit body 110, a cooling fan 150, a driving unit 120, a power unit 130, and a control unit 140. [ There is shown an ultrasonic operation apparatus 10 having a cartridge 200 including a piece 100, a cartridge body 210 and an ultrasonic generating unit 230, and a mount 300 for mounting them.

According to the present embodiment as described above, the air inlet 111 and the air outlet 113 are formed in the handpiece body 110 having the space portion 112 in which the various components are embedded, The air flow path leading to the air outlet 113 is formed and the cooling fan 150 is installed in the space 112 to forcefully flow the air to more efficiently discharge the heat generated inside the handpiece body 110 to the outside And as a result, the life of the product can be increased and the reliability of the product can be improved.

That is, a heat source such as an ultrasonic wave generating unit 230, a driving unit 120, a power source unit 130, and a control unit 140 is installed in the ultrasonic wave operation apparatus 10, If the heat radiation of the ultrasonic wave generating unit 230 is not properly performed, the life of the transducer is shortened and the reliability of the product is lowered. In the case of the embodiment, a forced air flow system is built in the handpiece body 110 so that heat inside the handpiece body 110 can be promptly and quickly discharged to the outside, thereby increasing the life of the product and improving the reliability of the product.

Hereinafter, with reference to Figs. 1 to 5, each configuration of the ultrasonic wave operation apparatus 10 according to the present embodiment will be described in more detail.

1 and 2, the ultrasound imaging apparatus 10 according to the present embodiment includes a handpiece 100 for operation of a practitioner, a cartridge 200 detachably coupled to the handpiece 100, And a cradle 300 for receiving the handpiece 100.

The practitioner (user) can put the handpiece 100 in the holder 300 before, after, or during use of the handpiece 100. [ The handpiece 100 can be mounted on the holder 300 by being inserted into the holder 300 in an upright state.

When the life of the cartridge 200 is short, the practitioner can replace the existing cartridge 200 with a new cartridge 200. As such a cartridge 200, a plurality of cartridges 200 having different operating conditions may be used. That is, the function of each cartridge 200 is classified according to a skin condition or a treatment part of a patient to be treated. In detail, conditions such as the irradiation intensity and the depth of the HIFU can be set differently.

The details of the handpiece 100, the cartridge 200, and the cradle 300 will be described below.

3 and 4, the handpiece 100 includes a handpiece body 110, a driving unit 120 installed inside the handpiece body 110, a power unit 130, a control unit 140, , And a cooling fan (150).

As shown in FIGS. 3 and 4, the handpiece body 110 is provided with a space 112 for installing the respective components therein. The air inlet 111 and the air outlet 113 for introducing and discharging outside air, May be respectively formed in plural.

3 and 4, the air inlet 111 is formed at one end of the handpiece body 110 so as to allow air to flow from the outside, and the air outlet 113 is formed at an end of the air inlet 113, And may be formed at the other end of the handpiece body 110 so as to be discharged to the outside.

According to this embodiment, the air inlet 111 and the air outlet 113 are formed in the handpiece body 110 to form an air flow passage connected to the air inlet 111, the space 112, and the air outlet 113 The heated air in the space portion 112 in which the components inside the handpiece body 110 are mounted can be discharged to the outside, so that the heat radiation efficiency of the ultrasonic treatment apparatus 10 can be improved.

In this case, as shown in FIGS. 3 and 4, the exhaust port 113 may be formed to face the air inlet 111. Since the air inlet 111 and the air outlet 113 are opposed to each other, the air flow resistance is minimized when the air introduced from the outside through the air inlet 111 flows toward the air outlet 113, The internal heat radiation can be more effectively performed.

3 and 4, the handpiece body 110 may include a grip portion 114 and a head portion 115. [ The grip portion 114 corresponds to the handle of the handpiece 100 as a portion gripped by the operator and the head portion 115 is connected to the grip portion 114 and extends from the grip portion 114. The grip portion 114 extends from the ultrasonic wave generating unit 230 And corresponds to an area irradiated with ultrasonic waves.

As shown in FIG. 4, a mounting space 116 may be formed at one side of the head part 115 to engage with the cartridge body 210 so that the cartridge body 210 can be mounted. In other words, at one side of the head part 115, a vertical mounting surface in the vertical direction and a horizontal mounting surface in the horizontal direction can be formed with reference to the drawing, and these vertical mounting surfaces and horizontal mounting surfaces So that the mounting space 116 is defined.

3 and 4, the air inlet 111 is formed on the upper surface of the head part 115 and the air outlet 113 can be formed on the lower surface of the grip 114, The cartridge body 210 mounted on the cartridge body 210 can be positioned on the flow path of the air that is positioned between the inlet port 111 and the outlet port 113 and leads to the inlet port 111 -space section 112-outlet port 113 .

The mounting space 116 of the head part 115 is formed on the air flow path between the air inlet 111 and the air outlet 113 so that the cartridge main body 210 is cooled by air passing therethrough, ). Accordingly, the heat generated by the operation of the ultrasonic wave generating unit 230 is primarily cooled by the ultrasonic medium (e.g., water) filled in the inside of the cartridge body 210, and then cooled by the air- It is possible to discharge the waste to the outside.

3 and 4, the exhaust port 113 is formed on the lower surface of the grip portion 114, that is, the bottom surface of the handpiece body 110, so that the flow of the air exhausted to the exhaust port 113 is performed by the operator It is possible to prevent problems such as obstructing the field of view, and as a result, the ultrasound procedure can be performed more safely and accurately.

3 and 4, the driving unit 120 may be installed inside the handpiece body 110 to provide a driving force for rectilinear motion of the ultrasonic wave generating unit 230. More specifically, the drive unit 120 may be a motor. The driving mechanism of the ultrasonic wave generating unit 230 will be described later in the description of the structure of the cartridge 200. [

The power supply unit 130 may be installed inside the handpiece body 110 to supply electricity to the ultrasonic wave generating unit 230 and the driving unit 120 as shown in FIGS. Specifically, a battery may be used as the power source unit 130.

In this case, the battery may be disposed on the cooling fan 150 in the handpiece body 110. The power supply unit 130 may be disposed adjacent to the exhaust port 113 and installed on the cooling fan 150. The power supply unit 130 may be installed close to the cooling fan 150, 130 can be effectively discharged through the exhaust port 113 by the forced flow of the fan.

The control unit 140 may be installed inside the handpiece body 110 for controlling the ultrasonic wave generating unit 230, the driving unit 120 and the power source unit 130 as shown in FIGS. have. The control unit 140 may be constituted by a printed circuit board on which electronic elements for controlling each component are mounted and on which a circuit pattern is formed. The printed circuit board may extend from the intake port 111 toward the exhaust port 113 along the longitudinal direction of the handpiece body 110.

Thus, the control unit 140 is disposed in parallel with the longitudinal direction of the main body, that is, the direction of air flow, so that the air introduced through the air inlet 111 passes through the control unit 140, So that more effective heat dissipation for various electronic elements mounted on the printed circuit board is possible.

3 and 4, the cooling fan 150 is disposed inside the handpiece body 110 so that the air introduced into the inlet port 111 is discharged to the outside of the handpiece body 110 And can be discharged to the discharge port 113 through the space 112 inside the handpiece body 110. [

The cooling fan 150 can form a forced flow in the handpiece body 110 from the air inlet 111 toward the air outlet 113. This air flow or air flow forms the inside of the handpiece body 110, The ultrasound generating unit 230 and the fluid filled in the cartridge main body 210 in the main cartridge body unit 210 and the drive unit 120, the power source unit 130 and the control unit 140, 250 and the like can be released to the outside more effectively.

The driving unit 120 in the handpiece body 110 dissipates heat by reciprocating the ultrasonic wave generating unit 230. The power source unit 130 includes a driving unit 120, an ultrasonic wave generating unit 230, Heat is generated in the process of supplying energy to the fuel cell. And the control unit 140 also emits heat from various electronic components mounted on the printed circuit board.

In this embodiment, the air inlet 111 and the air outlet 113 are formed so as to face each other on the upper and lower surfaces of the handpiece body 110, and a cooling fan 150 for forming airflow is formed in the handpiece body 110 Thereby effectively cooling each of these heat sources.

Also, the ultrasonic wave generating unit 230 inside the cartridge body 210 also radiates a lot of heat according to its operation, and such heat can be absorbed by the fluid 250 filled in the cartridge body 210. If the heat acceptance limit of the fluid 250 is exceeded as the operation time elapses, the ultrasound generating unit 230 may be damaged by heat to shorten its service life.

On the contrary, in the present embodiment, by locating the cartridge body 210 on the air flow path leading to the air intake port 111, the space portion 112, and the air outlet 113, the heat generated from the ultrasonic wave generation unit 230 can be efficiently Can be released.

Meanwhile, the cooling fan 150 may be installed on the exhaust port 113 in the handpiece body 110 as shown in FIGS. 3 and 4. That is, the cooling fan 150 may be located above the exhaust port 113 adjacent to the exhaust port 113. By arranging the cooling fan 150 on the exhaust port 113, the air in the handpiece body 110 can be discharged to the outside more effectively, so that the flow of air can be promoted and the cooling efficiency can be increased.

And the cooling fan 150 may be arranged to align with the position of the exhaust port 113 as shown in FIGS. The position of the cooling fan 150 can be set so that the central region of the plurality of exhaust ports 113 and the center of the cooling fan 150 are aligned with each other. Accordingly, since the flow resistance of the air can be minimized and the exhaust efficiency can be increased, the cooling efficiency for internal parts of the handpiece body 110 can be improved.

3 and 4, the cartridge 200 includes a cartridge body 210, a second coupling member 222, a cam 224, a movement guide 226, an ultrasonic wave generating unit 230, (240), fluid (250), and the like.

The cartridge body 210 may be detachably coupled to the handpiece body 110 as shown in FIGS. That is, the cartridge body 210 can be coupled to the mounting space 116 of the handpiece body 110 by inserting the latching protrusion provided on the handpiece body 110 into the latching groove of the cartridge body 210, The engaging protrusion can be released from the engaging groove in accordance with the pressing of the attach / detach button provided on the hand piece body 110. [

As shown in FIGS. 3 and 4, the cartridge body 210 may be provided with a circuit board 240 for supplying power to the ultrasonic generating unit 230 and controlling the operation thereof. A socket corresponding to the terminal portion of the circuit board 240 is provided in the handpiece body 110 so that the electrical connection between the cartridge 200 and the handpiece 100 can be realized.

3 and 4, the ultrasonic wave generating unit 230 may be installed inside the cartridge body 210 and may be linearly movably coupled along the longitudinal direction of the handpiece body 110. A movement guide 226 disposed along the longitudinal direction of the handpiece body 110 may be installed in the cartridge main body 210 and the ultrasonic wave generating unit 230 may be provided with a linear guide- Can be moved.

As shown in FIGS. 3 and 4, a cylindrical cam 224 disposed in parallel with the longitudinal direction of the handpiece body 110 may be rotatably installed in the cartridge body 210. The second coupling member 222 receiving the driving force in engagement with the first coupling member 122 coupled to the rotation axis of the drive unit 120 may be coupled to the end of the cylindrical cam 224. [ Further, a helical groove may be formed along the outer circumferential surface of the cylindrical cam 224, and a protrusion formed at the end of the ultrasonic wave generating unit 230 may be inserted into the helical groove.

When the first coupling member 122 rotates, the second coupling member 222 engaged with the second coupling member 222 receives the rotational force to receive the cylindrical cam 224, And the rotation of the cylindrical cam 224 can be converted into a linear motion of the ultrasonic wave generating unit in accordance with the interaction between the helical groove and the movement guide 226. [

The ultrasonic wave generating unit 230 may be coupled to the handpiece body 110 through the cartridge body 210 as shown in FIGS. 3 and 4 to generate ultrasonic waves for a procedure. As described above, the ultrasonic wave generating unit 230 linearly reciprocates in the front-back direction and irradiates ultrasound, for example, high-intensity focused ultrasonic waves through the window of the cartridge main body 210 to the skin tissue of the subject. More specifically, the ultrasonic wave generating unit 230 may include a transducer for generating ultrasonic waves.

High intensity focused ultrasound can focus the ultrasound to one focus and form a thermal focus point. This thermal focus may be a thermal focus at a high temperature of about 60 degrees Celsius or more.

Accordingly, the thermal focal point is formed in the dermal layer, the fascia layer, or the SMAS layer located at about 1.5 mm to 4.5 mm from the surface of the skin using the ultrasound procedure device 10 to perform thermal lesion or thermal coagulation region, thereby performing the face lifting or skin tightening procedure.

3 and 4, a fluid 250 for transferring the ultrasonic wave generated by the ultrasonic wave generating unit 230 and for cooling the ultrasonic wave generating unit 230 may be filled in the cartridge body 210 .

The high intensity focusing ultrasonic waves generated in the ultrasonic wave generating unit 230 may be transmitted to the outside of the cartridge body 210 using a fluid 250 such as water as a medium and the fluid 250 may be transmitted to the ultrasonic wave generating unit 230, The ultrasound generating unit 230 can be cooled by absorbing the heat radiated by the operation of the ultrasound generating unit 230.

The cartridge body 210 may be coupled to the mounting space 116 provided at one side of the head portion 115 of the handpiece body 110. [ 3 and 4, the mounting space 116 can be located on the flow path of the air that flows into the air inlet 111 and is discharged to the air outlet 113, The fluid 250 can be effectively cooled through the forced flow of air by the cooling fan 150. [

1 and 2, the ultrasound therapy apparatus 10 according to the present embodiment may include a holder 300 for holding the handpiece body 110. A charging terminal portion electrically connected to the handpiece 100 may be formed in the mounting table 300. When the handpiece 100 is mounted on the mounting table 300, the charging of the power supply unit 130 may be performed.

1 and 2, a mounting space 310 into which the one end or the other end of the handpiece body 110 is inserted is provided in the mount 300 so as to support the handpiece body 110 in an upright state . The handpiece 100 can be mounted on the cradle 300 by inserting the other end of the handpiece body 110, that is, the end of the gripping part 114 into the cradling space 310 in this embodiment.

5, a through hole 320, which is connected to the air inlet 111 or the air outlet 113 when the handpiece body 110 is mounted, and through which air is introduced from the outside or air is discharged to the outside, Can be formed.

5, the air outlet 113 of the handpiece body 110 may be connected to the through-hole 320, so that the air introduced through the air inlet 111 passes through the handpiece body 110 And then exhausted to the outside through the through hole 320 of the mount 300. The through hole 320 of the mount 300 can be discharged to the outside through the space portion 112 of the mount table 110.

5, the through hole 320 may be formed to penetrate the bottom surface of the mount 300 and may be connected to the air outlet 113 of the handpiece body 110, which is mounted inside the mount 300 .

As described above, according to the present embodiment, a large number of through holes 320 communicating with the air inlet 111 or the air outlet 113 are formed in the mount table 300, so that heat can be smoothly generated even when the mount 300 is stationary Therefore, even when the handpiece 100 is placed in the cradle 300 during use or immediately after use, it is possible to effectively dissipate heat for internal components without reducing performance.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

10: Ultrasonic device
100: Handpiece
110: Handpiece body
111: Intake port
112:
113: Exhaust hole
114:
115:
116: mounting space
120: drive unit;
122: first coupling member
130: Power supply unit
140: control unit
150: Cooling fan
200: Cartridge
210:
222: second coupling member
224: Cam
226: Moving Guide
230: Ultrasonic generating unit
240: circuit board
250: Fluid
300: Cradle
310: Mounting space
320: Through hole

Claims (10)

1. A handpiece comprising: a handpiece body having a space therein;
An air inlet formed at one end of the handpiece body to allow air to flow from the outside;
An exhaust port formed at the other end of the handpiece body such that air in the handpiece body is discharged to the outside;
An ultrasonic wave generating unit coupled to the handpiece body for generating ultrasonic waves for a procedure; And
And a cooling fan disposed inside the handpiece body such that air introduced into the inlet port is discharged to the outside through the exhaust port via the space portion.
The method according to claim 1,
And the air outlet is formed to face the air inlet.
The method according to claim 1,
Wherein the cooling fan is installed adjacent to the exhaust port in the handpiece body relative to the intake port.
The method of claim 3,
Wherein the cooling fan is arranged to align with the position of the exhaust port.
The method according to claim 1,
Wherein the handpiece body comprises:
A driving unit installed in the handpiece body to provide a driving force for moving the ultrasonic wave generating unit;
A power supply unit installed inside the handpiece body to supply electricity to the driving unit; And
And a control unit provided inside the handpiece body for controlling the drive unit and the power unit,
Wherein the cooling fan discharges heat generated from at least one of the ultrasonic wave generating unit, the driving unit, the power source unit, and the control unit to the outside.
6. The method of claim 5,
Wherein the control unit comprises a printed circuit board,
Wherein the printed circuit board is disposed so as to extend from a longitudinal direction of the handpiece body to the exhaust port side from the air inlet.
6. The method of claim 5,
Wherein the power unit includes a battery,
Wherein the battery is disposed on the cooling fan within the handpiece body.
Ultrasound therapy devices; And
And a cradle for receiving the ultrasonic treatment device,
The ultrasonic operation device includes:
1. A handpiece comprising: a handpiece body having a space therein;
An air inlet formed at one end of the handpiece body to allow air to flow from the outside;
An exhaust port formed at the other end of the handpiece body such that air in the handpiece body is discharged to the outside;
An ultrasonic wave generating unit coupled to the handpiece body for generating ultrasonic waves for a procedure; And
And a cooling fan disposed inside the handpiece body such that air introduced into the inlet port is discharged to the outside through the exhaust port via the space portion,
Wherein the mounting base is formed with a through hole through which air is introduced from the outside or air is discharged from the outside in correspondence with the inlet or the outlet when the handpiece body is mounted.
9. The method of claim 8,
Wherein the cradle has a mounting space into which one end or the other end of the handpiece body is inserted so as to be able to support the handpiece body in an upright state,
Wherein the air is vertically moved in sequence to the air inlet, the air outlet, and the through hole when the handpiece body is mounted, and then the air is discharged to the outside from the cradle.
9. The method of claim 8,
And the through hole is connected to the exhaust port to allow the air to be forcedly discharged through the exhaust port by the cooling fan to pass therethrough.

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