KR20220169561A - Hand-held Scanner with Improved Internal Structure - Google Patents

Abstract

The present invention relates to a handheld scanner, and more particularly to a handheld scanner with an improved internal structure for insertion into a human body, such as a human mouth, nose, ear, etc., to scan three-dimensional shape data or to acquire three-dimensional shape data of a diagnostic model, such as a plaster, an impression mold, etc. The handheld scanner with the improved internal structure of the present invention can be configured as a handheld scanner with a compact structure by miniaturizing the overall size while providing solid support for the internal parts. The handheld scanner with the improved internal structure of the present invention can also miniaturize a wirelessly operated handheld scanner while improving its durability.

Description

Hand-held Scanner with Improved Internal Structure

The present invention relates to a handheld scanner, and more particularly, to scan three-dimensional shape data by being inserted into the human body, such as the oral cavity, nose, or ear, or to obtain three-dimensional shape data of a diagnostic model such as a plaster or an impression model. It relates to a handheld scanner with an improved internal structure for

A handheld scanner is an optical device that is inserted into a person's oral cavity, nose, ear, etc. to obtain a 3D shape of an object or to obtain a 3D shape of a diagnostic model such as a gypsum or an impression model.

In the case of a handheld type scanner, the user holds the scanner by hand and adjusts the position and direction.

Preference for handheld scanners that operate wirelessly for user convenience is increasing, and many handheld scanners of the same type are being developed.

For handheld scanners that operate wirelessly, the use of batteries is essential. In addition, in order to use the battery while minimizing the replacement or charging of the battery, a battery having a large amount of power must be used. In order to increase the amount of power, the volume of the battery has to be increased. On the other hand, it is desirable that the overall size of the handheld scanner be as small as possible. The smaller the handheld scanner is, the easier it is to operate and use. In addition, in order to insert and use the handheld scanner in a narrow space such as the ear, nose, or mouth, the smaller the size of the handheld scanner, the easier it is to scan a three-dimensional shape. In particular, the smaller the size of the hand health scanner, the more convenient it is to use for the purpose of scanning the oral cavity of a person with a small body such as a child or a person who cannot open his or her mouth wide due to jaw pain.

In addition, as the performance of handheld scanners develops, the number of types of parts installed inside the handheld scanners increases or a high-performance image processing unit is used. In this way, when the high-performance image processing unit is used, more heat is generated. As a result, when the temperature of the handheld scanner rises, it is inconvenient for the user to hold it with his hand, and the discomfort of the person (patient) to be scanned may increase. In addition, when the internal structure thermally expands due to heat generated in the image processing unit of the handheld scanner, there is a problem in that the accuracy of the task of obtaining 3D shape data may be deteriorated. In order to solve this problem, it is desirable to keep the internal temperature of the handheld scanner within an appropriate temperature range without becoming too high. To this end, a handheld scanner having a structure capable of effectively cooling the internal temperature of the handheld scanner is required.

In addition, in order to reduce the size of the handheld scanner, there is a need for a handheld scanner having a structure capable of minimizing the increase in the overall volume of the handheld scanner while effectively supporting parts installed therein.

An object of the present invention is to provide a handheld scanner having an improved internal structure having a compact structure while firmly supporting the internal configuration.

A handheld scanner with an improved internal structure of the present invention for solving the above object includes an image processing unit for taking an image for scanning a three-dimensional shape of an oral cavity; a cooling fan for cooling the image processing unit; a support frame on which the image processing unit and the cooling fan are mounted and fixed; and a case body configured to accommodate the image processing unit, the cooling fan, and the support frame therein so as to cover and protect the image processing unit, the cooling fan, and the support frame.

The handheld scanner having an improved internal structure according to the present invention can form a handheld scanner with a compact structure by miniaturizing the overall size while firmly supporting the internal parts.

In addition, the handheld scanner having an improved internal structure of the present invention can improve durability while downsizing the handheld scanner that operates wirelessly.

1 is a perspective view of a handheld scanner having an improved internal structure according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a handheld scanner in which the internal structure shown in FIG. 1 is improved.
FIG. 3 is a cross-sectional view of a handheld scanner in which the internal structure shown in FIG. 1 is improved.

Hereinafter, a handheld scanner having an improved internal structure according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view of a handheld scanner with an improved internal structure according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the handheld scanner with an improved internal structure shown in FIG. 1 .

Referring to FIGS. 1 and 2 , the handheld scanner having an improved internal structure of the present embodiment includes an image processing unit 100 , a cooling fan 510 , a support frame 600 , and a case body 300 .

In this embodiment, the image processing unit 100 is a configuration including configurations such as a projector, a camera, and an image sensor. Illuminated light generated by the projector of the image processing unit 100 is reflected by a scanning object such as the oral cavity and received by an image sensor. The image processing unit 100 acquires a 2D image for constructing the 3D shape of the object and transmits it to the outside, or generates a 3D shape by performing an operation to combine the 2D images in the image processing unit 100 itself. may be

The cooling fan 510 is a component for cooling the internal components of the handheld scanner and the case body 300 of the present invention. The cooling fan 510 may be controlled to continuously operate when the handheld scanner of the present invention is used, or may be controlled to operate when the temperature measured by a temperature sensor installed inside the handheld scanner becomes higher than a predetermined value. may be In this case, when the temperature measured by the temperature sensor due to the operation of the cooling fan 510 is lower than a predetermined temperature, the operation of the cooling fan 510 is stopped.

The cooling fan 510 operates to suck in air from the rear side of the handheld scanner having an improved internal structure according to the present embodiment and send it to the front side. Silver nano-coating may be applied to the impeller fan blades of the cooling fan 510 .

The air filter 530 is disposed between the image processing unit 100 and the cooling fan 510 . Air introduced from the outside by the cooling fan 510 passes through the air filter 530 to filter out foreign substances. Air passing through the air filter 530 is delivered to the image processing unit 100 . As the air filter 530, filters made of various materials may be used. In this embodiment, an air filter 530 in the form of a silver nano filter is used.

In particular, in the case of the silver nano-filter used in this embodiment, it is preferable to use silver particles having a size of 10 nm to 50 nm. When the size of the silver particles is smaller than 10 nm, the antibacterial performance of the air filter 530 may be insufficient, and when the size of the silver particles is larger than 50 nm, the manufacturing cost of the air filter 530 may increase.

The power supply unit 200 supplies operating power to the image processing unit 100 and the cooling fan 510 . In this embodiment, a removable power source 200 in the form of a lithium ion battery that can be charged and used is used. In some cases, it is also possible to use a power unit having a structure connected by wire with a power supply cable.

The connecting member 700 is a component for fixing the power supply unit 200 in a detachable manner. The connection member 700 includes a power connection unit 720 , a supply passage 710 and a discharge passage 730 .

The power supply unit 200 in the form of a battery described above is detachably coupled to the power connection unit 720 of the connection member 700 . The supply passage 710 of the connection member 700 is configured to supply external air to the cooling fan 510 . External air is introduced into the case body 300 through the supply passage 710 formed in the connecting member 700 and supplied to the cooling fan 510 . In this embodiment, a plurality of supply passages 710 are spaced apart from each other along the outer circumference of the power connector 720 so that the handheld scanner can be miniaturized and the outside air can be smoothly transferred to the inside. In addition, it is preferable that the plurality of supply passages 710 of the connecting member 700 are disposed within an area extending directly behind the cooling fan 510 . With this configuration, external air can be supplied through the supply passage 710 while minimizing the loss of pressure generated by the cooling fan 510, and at the same time, the size of the rear portion of the handheld scanner can be reduced.

As described above, the connecting member 700, the cooling fan 510, the air filter 530, and the image processing unit 100 are mounted on the support frame 600 and installed inside the case body 300 while being supported. do.

As shown in FIGS. 2 and 3 , the support frame 600 has a frame structure capable of fixing and supporting the connecting member 700 , the cooling fan 510 , and the image processor 100 . Since the handheld scanner having an improved internal structure of the present embodiment is preferably miniaturized so that it can be used in the oral cavity, the support frame 600 is preferably formed of a hard material while occupying a relatively small volume. In addition, the support frame 600 is preferably formed in the form of an exoskeleton capable of supporting the outer circumference of the connecting member 700, the cooling fan 510, and the image processing unit 100.

In the case of this embodiment, as shown in FIGS. 2 and 3, the support frame 600 is formed in a form capable of contacting and supporting only one surface of the connecting member 700, the cooling fan 510, and the image processing unit 100. .

The support frame 600 includes a connection mounting portion 601 , a fan mounting portion 602 , and an optical mounting portion 603 . The connection holder 601, the fan holder 602, and the optical holder 603 are formed in shapes corresponding to the outer shapes of the connecting member 700, the cooling fan 510, and the image processing unit 100, respectively. Accordingly, the connecting member 700, the cooling fan 510, and the image processing unit 100 are seated on the connection holder 601, the fan holder 602, and the optical holder 603, respectively, to form a support frame 600. and assembled At this time, the air filter 530 is disposed between the cooling fan 510 and the image processing unit 100 .

An assembly formed by mounting the connecting member 700 , the cooling fan 510 , the air filter 530 , and the image processing unit 100 to the support frame 600 as described above is installed inside the case body 300 .

In the case of this embodiment, as shown in FIG. 2, the case body 300 has a structure that covers the upper and lower portions of components such as the connection member 700, the cooling fan 510, the air filter 530, and the image processing unit 100, respectively. It consists of a first case 310 and a second case 320 .

After mounting the image processing unit 100, the air filter 530, the cooling fan 510, and the connecting member 700 on the support frame 600, they are placed between the first case 310 and the second case 320. be placed on In this state, the assembly of the case body 300 is completed by combining the first case 310 and the second case 320 with each other. In a state in which the support frame 600 supports the lower surfaces of the image processing unit 100, the air filter 530, the cooling fan 510, and the connecting member 700, the first case 310 is placed on the lower side of the support frame 600. is placed on The assembly is completed by coupling the second case 320 to the first case 310 in this state. At this time, the support frame 600 is disposed only between the first case 310 and internal components such as the connection member 700, the cooling fan 510, the air filter 530, and the image processing unit 100, as described above. By not allowing the support frame 600 to exist between the internal structure and the second case 320, the handheld scanner having an improved overall internal structure can be reduced in size and compactly configured.

At this time, it is preferable that at least a portion of the first case 310 and the second case 320 be coated with an antibacterial material such as silver nanoparticles. The silver nanoparticles may be coated on the outer surfaces of the first case 310 and the second case 320 or the inner surfaces of the first case 310 and the second case 320 .

In this state, the tip case 400, which is directly inserted into the oral cavity of the patient, is mounted on the case body 300 and used. Since the tip case 400 is directly inserted into the patient's oral cavity and is stained with saliva or secretions, it is replaced every time for hygiene. Light generated by the projector of the image processing unit 100 is irradiated to the outside through the transparent portion of the tip case 400 . Light reflected from an object such as the oral cavity passes through the transparent portion of the tip case 400 and is transmitted to the image sensor of the image processing unit 100 .

Meanwhile, the power supply unit 200 having a detachable structure is inserted into the power connection unit 720 of the connection member 700 and mounted, so that a part of the power unit 200 is inserted into the rear of the case body 300.

The supply passage 710 of the connecting member 700 is formed to supply external air to the cooling fan 510 inside the case body 300 .

Referring to FIG. 3 , a cooling passage 301 is formed between the inner surface of the case body 300 and the image processing unit 100 . The flow of air generated by the cooling fan 510 continues from the rear to the front and cools the image processing unit 100 while flowing around the outer periphery of the image processing unit 100 . A tip passage 303 is formed inside the case body 300 so that some of the air passing through the cooling passage 301 flows into the tip case 400 . Air flowing through the tip passage 303 flows into the tip case 400 to prevent fogging of the main part of the tip case 400 .

A heat dissipation unit 810 is disposed in the cooling passage 301 . The heat dissipation unit 810 is disposed to contact the image processing unit 100 . In this embodiment, the heat dissipation unit 810 is formed of an aluminum alloy or copper alloy material having excellent conductivity and coupled to the image processing unit 100 . In this embodiment, the heat dissipation unit 810 is composed of a combination of cooling fins. Air flowing through the cooling passage 301 by the cooling fan 510 absorbs heat generated in the image processing unit 100 while passing through the heat dissipation unit 810 and transfers it to the air, and the air 301 flowing through the cooling passage passes through the heat dissipation unit 810. While being discharged to the discharge passage 730, the heat absorbed from the heat dissipation unit 810 is discharged to the outside.

A return passage 305 is formed inside the case body 300 so that another part of the air passing through the cooling passage 301 is changed in direction and flows to the rear of the case body 300 . Some of the air passing through the periphery of the image processing unit 100 continues to the rear of the case body 300 through the return passage 305 and is discharged to the outside through the discharge passage 730 of the connection member 700 .

With this structure, only a portion of the air flow generated by the cooling fan 510 is used to prevent fogging of the tip case 400, and the remaining air is returned and discharged to supplement the cooling function. In addition, even when the flow rate of air generated by the cooling fan 510 is very high, only a limited amount of air that does not cause discomfort to the patient is supplied to the tip case 400, and the remaining air passes through the return passage 305. can be discharged to the outside. Due to such a structure, the image processing unit 100 can be cooled with air at a sufficient flow rate without causing discomfort to the patient.

Hereinafter, the operation of the handheld scanner having an improved internal structure constructed as described above will be described.

First, a method of assembling a handheld scanner having an improved internal structure according to the present embodiment will be described.

A manufacturer mounts the connecting member 700, the cooling fan 510, and the image processor 100 to the support frame 600, respectively. The air filter 530 may be installed on the support frame 600 in an assembled state with the cooling fan 510 or may be directly mounted on the support frame 600 .

In this state, the support frame 600 is placed on the first case 310 and the second case 320 is covered thereon. When the first case 310 and the second case 320 are pressed against each other, the first case 310 and the second case 320 are moved by the engaging parts formed on the first case 310 and the second case 320, respectively. are tied to each other

In this way, by mounting or mounting the main components of the handheld scanner with an improved internal structure to the support frame 600 and assembling the first case 310 and the second case 320, a handheld scanner with an improved overall internal structure While reducing the size of the scanner, it is possible to construct a handheld scanner with improved robust and durable internal structure. In addition, the durability of the handheld scanner having an improved internal structure can be improved by ensuring that the components such as the cooling fan 510 and the air filter 530 are firmly assembled inside the case body 300.

In particular, by connecting the internal and external components of the case body 300 through the connecting member 700 and securing the supply passage 710 for the cooling fan 510 at the same time, the internal structure of the handheld scanner is improved. The size can be reduced, and the convenience of installation and use of the removable battery can be improved.

A user uses the power supply unit 200 in the form of a charged battery by mounting it on the case body 300 . As described above, when the power supply unit 200 is inserted into the power connection unit 720 of the connecting member 700, the power supply unit 200 is fixed and energized through the electrode terminal, so that the power supply unit 200 operates the image processing unit 100 and the cooling fan. Power is supplied to (510).

In this state, the tip case 400 is also mounted on the front of the case body 300 to complete preparation for use. The user holds the case body 300 with his hand and inserts the tip case 400 into the oral cavity of the patient to scan the inside of the oral cavity. At this time, the user holds the case body 300 with his hand and adjusts the position and direction of the tip case 400 while scanning various areas of the oral cavity.

As described above, if the outer surface of the case body 300 is coated with an antibacterial material such as silver nanoparticles, contamination of the case body 300 by a user's hand can be prevented. Unlike the tip case 400, which is replaced with a new product every time, by antibacterially reusing the case body 300 in this way, it is possible to ensure the safety of users and patients.

Air introduced into the supply passage 710 of the connection member 700 by the cooling fan 510 is transferred to the cooling passage 301 via the air filter 530 . Air flowing through the cooling passage 301 cools the image processing unit 100 while exchanging heat with the image processing unit 100 through the heat dissipation unit 810 .

When the projector of the image processing unit 100 generates irradiation light and the image sensor of the image processing unit 100 captures an image, the heat generated in the image processing unit 100 is transferred to the cooling fan 510 and the heat dissipating unit 810. By cooling by cooling, the handheld scanner having an improved internal structure of the present embodiment has an advantage of preventing performance degradation due to overheating of the image processing unit 100 . In addition, when the temperature of the case body 300 or the tip case 400 rises due to the heat generated by the image processing unit 100, discomfort to the user or patient may increase, but the hand with the improved internal structure of the present invention The held scanner has an advantage of preventing the occurrence of such a phenomenon. In addition, the handheld scanner of the present invention limits the thermal deformation of the main components by preventing the temperature of the main components of the handheld scanner, including the image processing unit 100, from rising above a predetermined range by the cooling fan 510. It has the advantage of improving accuracy.

As the handheld scanner has improved in performance, a plurality of cameras may be disposed in the image processing unit 100 and two or more light sources may be included. Also, the image processing unit 100 tends to be miniaturized and integrated. In this way, as the image processing unit 100 is miniaturized and functions are improved at the same time, the possibility of generating heat in the image processing unit 100 increases. In this embodiment, by installing the heat dissipation unit 810 in the image processing unit 100, there is an advantage in preventing degradation of performance due to an excessively high temperature of the image processing unit 100. In addition, when it is difficult to prevent overheating of the image processing unit 100 only with the flow of air by the cooling fan 510, the temperature of the image processing unit 100 can be effectively controlled by the heat dissipation unit 810.

In addition, the image processing unit 100 includes a communication module that transmits and receives data to and from an external device. The higher the capacity and speed of the data transmitted and received through the communication module, the higher the possibility of heat generation. The heat dissipation unit 810 provides an advantage of effectively controlling the temperature rise by the communication module of the image processing unit 100 . In particular, when the handheld scanner operates wirelessly, the heat generation of the communication module increases, and the heat dissipation unit 810 and the cooling fan 510 effectively control the temperature rise of the image processing unit 100.

Some of the air passing through the cooling passage 301 flows into the tip passage 303 . The tip case 400 used by being inserted into the patient's oral cavity may cause fogging due to the patient's breathing, but the handheld scanner having an improved internal structure of the present embodiment is sprayed through the tip passage 303 The air structurally prevents this fogging. Due to the role of the tip passage 303, an operation of scanning an object can be performed more efficiently.

At this time, in order to prevent fogging, the air injected into the oral cavity of the patient is treated with antibacterial treatment by the method described below, so that bacteria or contaminants can be prevented from entering the patient's oral cavity.

First, if the surface of the impeller blades of the cooling fan 510 is coated with nano silver, air in contact with the blades can be sterilized.

In addition, as described above, the use of the air filter 530 having a silver nano-filter structure has the advantage of filtering out foreign substances that may be included in the air and performing an antibacterial action.

In particular, when a silver nano-filter is used as the air filter 530, the contact area between air and silver nano-particles can be increased to further improve antibacterial performance. When the flow rate of air is high by the cooling fan 510, it is preferable to use a silver nano-filter using silver particles having a size greater than 10 nm to improve antibacterial performance. In this way, as the size of the silver particles increases, the contact area with air increases, thereby improving antibacterial performance. However, when the size of silver nanoparticles is greater than 50 nm, manufacturing cost may increase. In some cases, it is also possible to use silver nano-coating on the air filter 530 formed of a three-dimensional structure such as a porous material, a spider's web structure, or an impregnated structure.

When the inner surface of the case body 300 is subjected to antibacterial treatment such as nano-silver coating, air flowing through the cooling passage 301 may be additionally sterilized.

Since the air flowing into the tip passage 303 through the cooling passage 301 is directly injected into the oral cavity, it is preferable to treat the antibacterial treatment in various ways through the same process as described above.

A portion of the air that has passed through the cooling passage 301 does not proceed to the tip case 400 but is diverted, passes through the return passage 305, and passes through the discharge passage 730 of the connecting member 700. discharged to the outside through

On the other hand, if the UV LED is disposed on the path of the air flowing inside the case body 300 by the action of the cooling fan 510 as described above, it is possible to additionally sterilize the air by ultraviolet rays.

In the above, the present invention has been described with a preferred example, but the scope of the present invention is not limited to the form described and illustrated above.

For example, the case of using the support frame 600 having a structure supporting only the lower surface of the connecting member 700, the cooling fan 510, and the image processing unit 100 has been described as an example, but in some cases, It is also possible to use a support frame of a different structure. For example, it is also possible to use a support frame composed of a first frame and a second frame. In this case, the first frame supports the lower surface of the components such as the connecting member, the cooling fan, and the image processing unit, and the second frame supports the upper surface of the components, and the first case and the second case are assembled inside. It is also possible to configure a handheld scanner with an improved structure.

In addition, although the structure in which the air filter 530 is provided between the cooling fan 510 and the image processing unit 100 has been described as an example, the internal structure of the structure without the air filter 530 constitutes an improved handheld scanner. It is also possible to do In addition, even if an air filter is used, it is possible to use an air filter other than a silver nano filter.

In addition, although it has been described above that the heat dissipation unit 810 is installed in the image processing unit 100, the installation structure or shape of the heat dissipation unit may be variously modified. In some cases, it is also possible to configure a handheld scanner having a structure without a heat dissipation unit. The heat dissipation unit may be installed on the support frame or the case body so as to maintain contact with the image processing unit without being directly coupled to the image processing unit. The material of the heat dissipation unit may also be variously changed.

In addition, although it has been described above that silver nano-coating is applied to the inner surface of the case body 300, the outer surface of the case body 300, and the wings of the cooling fan 510, it is also possible to use silver nano-coating only on some of them. In addition, it is also possible to coat the antibacterial material other than the silver nano coating. In addition, it is also possible to configure a handheld scanner having an improved internal structure without silver nano coating or antibacterial material coating as described above.

In addition, although a handheld scanner with an improved internal structure of a wireless structure equipped with a removable rechargeable battery has been described as an example, in some cases, a cable connected to a power supply is inserted through a connecting member to connect a wired scanner. It is also possible to construct a handheld scanner in which the internal structure of the structure is improved.

100: image processing unit 200: power unit
300: case body 310: first case
320: second case 301: cooling passage
303: tip euro 305: return euro
400: tip case 510: cooling fan
530: air filter 600: support frame
601: connection mounting portion 602: fan mounting portion
603: optical mount 700: connecting member
710: supply flow 720: power connection
730: exhaust flow path 810: heat sink

Claims (14)

An image processing unit for taking an image for scanning the three-dimensional shape of the oral cavity;
a cooling fan for cooling the image processing unit;
a support frame on which the image processing unit and the cooling fan are mounted and fixed; and
A handheld scanner having an improved internal structure including a case body formed to accommodate the image processing unit, the cooling fan, and the support frame therein so as to cover and protect the image processing unit, the cooling fan, and the support frame. According to claim 1,
The case body is disposed to face each other and includes a first case and a second case coupled to each other with the image processing unit, the cooling fan, and the support frame interposed therebetween. According to claim 2,
The image processing unit and the cooling fan are coupled to the support frame,
The support frame is coupled to the first case,
The handheld scanner having an improved internal structure in which the second case is assembled by being coupled to the first case. According to any one of claims 1 to 3,
A handheld scanner having an improved internal structure, further comprising: a power connection unit to which a power supply unit for supplying power to the image processing unit and the cooling fan is detachably coupled, and a connection member mounted on and fixed to the support frame. According to claim 4,
The handheld scanner having an improved internal structure, wherein the connecting member includes a supply passage formed to supply air to the cooling fan. According to claim 5,
The handheld scanner having an improved internal structure formed so that the power supply unit of the connection member can be detachably mounted to the power supply unit in the form of a rechargeable battery. According to claim 4,
The handheld scanner having an improved internal structure, wherein the support frame includes an optical mounting portion in which the image processing unit is mounted, a fan mounting portion in which the cooling fan is mounted, and a connection mounting portion in which the connecting member is mounted. According to claim 7,
The support frame is disposed between the image processing unit, the cooling fan and the connection member and the first case to support the image processing unit, the cooling fan and the connection member, and the second case includes the image processing unit, the cooling fan and the connection member. A handheld scanner having an improved internal structure coupled to the first case by directly covering the connecting member. According to claim 4,
The handheld scanner having an improved internal structure further includes a tip case configured to transmit light emitted from the image processing unit to the outside and transmit light reflected from an object to the image processing unit and detachably coupled to the case body. . According to claim 9,
In the case body, a cooling passage formed between an inner surface of the case body and the image processing unit, a tip passage formed to transfer a part of air passing through the cooling passage to the tip case, and a cooling passage passing through the cooling passage A handheld scanner having an improved internal structure in which return passages are formed to change the direction of a portion of air and transfer it to the rear of the case body. According to claim 10,
The handheld scanner having an improved internal structure, wherein the connecting member further includes a discharge passage formed to be connected to the return passage of the case body. According to claim 1,
An improved internal structure further comprising a heat dissipation unit disposed in contact with the image processing unit and disposed in a cooling passage inside the case body so as to cool the image processing unit by the flow of air generated by the cooling fan. handheld scanner. According to claim 4,
A handheld scanner with an improved internal structure further comprising an air filter disposed between the image processing unit and the cooling fan. According to claim 4,
The support frame includes a first frame and a second frame disposed to face each other,
The handheld scanner having an improved internal structure wherein the image processing unit, the cooling fan, and the connecting member are disposed between the first frame and the second frame, respectively.

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