JP2006139328A - Information communication device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information communication device that easily exchanges information with other pieces of equipment via communication in contact or at a close range close to the contact and has improved visibility. <P>SOLUTION: The information communication device comprises a body casing 206 having a storage 202 and a power supply device, and a display casing 204 having a display 203 and an antenna 201 enabling the communication in contact or at a close range close to the contact. The body casing 206 has a grip section 205 for holding the body casing 206 at both the sides. The display casing 204 is formed while overhanging to the rear of the body casing 206. The display section 203 is provided on the upper surface of the display casing 204, and the antenna 201 is provided on the lower surface of the display casing 204. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an information communication device including a communication device having an antenna that enables near field communication with an external device, and a display device that displays information about information acquired via the communication device. is there.

In recent years, devices capable of exchanging information through short-distance communication such as contact operation and touch operation have become widespread. For example, some commuter commuter passes and bank cards allow information communication with a card reader based on an operation of touching or placing a card or the like at a predetermined position without being inserted into the card reader.
Further, for example, there is a mobile phone provided with a short-range wireless device so that it can pass through a ticket gate like a commuter pass.

On the other hand, in a museum or the like, there is a system for explaining an exhibit from a portable device held by a visitor. At first, it was an audio system, but in recent years, there are some that use video. For example,
In Japanese Patent Laid-Open No. 2004-88361, it is possible to make a visit suitable for each visitor, receive an appropriate explanation to the visitor at each visit place, and evacuate appropriately for each person even if a disaster occurs A tour information providing system capable of providing guidance for a visitor is disclosed. In this conventional example, when the visitor arrives at the tour location and the data carrier enters the communication area of the transmission unit provided at the tour location, the explanation information is transmitted to the mobile terminal so that an optimal tour can be performed. .

Japanese Patent Laid-Open No. 2004-88361

In the conventional example, when the data carrier enters the communication area of the transmission unit provided in the tour place, the explanation information is transmitted to the portable terminal. For this reason, a large-scale communication facility is required to detect the data carrier within a predetermined communication area and transmit the explanation information to the mobile terminal. Moreover, in order to receive the explanation information with the portable terminal, a certain degree of visibility is required, but in this conventional example, the specific contents of the device to be browsed are not disclosed.
Accordingly, an object of the present invention is to provide an information communication apparatus that can easily exchange information with other devices through contact or communication at a short distance close to contact and has good visibility.

  In the information communication apparatus according to the present invention, in order to solve the above-described problem, the display casing is provided so as to protrude from the main body casing having the grip portion for holding the information communication apparatus, and is provided on one surface of the display casing. A display device is provided, and an antenna that enables communication at a short distance or near contact is provided on the other surface.

  Specifically, an information communication device according to the present invention includes a main body housing having a storage device and a power supply device, and a display housing including an antenna that enables communication at a short distance from or close to contact with the display device. The main body housing includes grip portions for holding the information communication device on both sides thereof, and the display housing is formed to protrude rearward from the main body housing, and is formed on the upper surface of the display housing. A display portion is provided, and the antenna is provided on the lower surface of the display housing.

  ADVANTAGE OF THE INVENTION According to this invention, an information communication apparatus which is easy to exchange information with other apparatuses via communication at a short distance close to or in contact with holding the information communication apparatus and has good visibility is provided. .

  Hereinafter, the browsing system according to this embodiment will be described in detail with reference to FIGS. In addition, the same site | part, direction, etc. are shown with the same code | symbol, and the overlapping description is abbreviate | omitted. FIG. 1 is an external view of this browsing system. FIG. 2 is an apparatus block diagram of this browsing system. 3A and 3B are layout views of internal devices of the main body housing, in which FIG. 3A is a plan view of the main body housing portion, and FIG. 3B is a cross-sectional view of the main body housing. FIG. 4 is a longitudinal sectional view of the main body housing. 5A and 5B are external views of the browsing terminal, where FIG. 5A is a plan view, FIG. 5B is a bottom view, FIG. 5C is a front view, FIG. 5D is a right side view, and FIG. Figure (f) is a left side view. FIGS. 6A and 6B are external views of the marker portion, where FIG. 6A is a front view and FIG. 6B is a left side view. FIG. 7 is a screen transition diagram of the browsing terminal.

  First, the schematic structure of this browsing system will be described with reference to each drawing based on FIG. In FIG. 1, this browsing system is an information providing system installed in a museum or an exhibition hall. The browsing system includes a marker unit 100 that is installed in the vicinity of each exhibit and identifies the exhibition unit, and a plurality of browsing terminals 200 that display various types of information to the user.

  The marker unit 100 is provided with a storage element 110 for storing an identification number of each exhibit and a marker antenna 111 at a predetermined height. The storage element 110 is driven by receiving a radio wave transmitted from the browsing terminal 200 through the marker antenna 111, and can transmit the stored identification number through the marker antenna 111. In this embodiment, the memory element 110 is composed of a semiconductor element called a μ chip. The μ chip stores a unique identification number. In FIG. 1, the marker antenna 111 and the storage element 110 are illustrated for explanation, but in actuality, the marker antenna 111 and the storage element 110 are provided so as to cover the surface with a sheet or the like. Therefore, by providing the display unit with the marker unit 100, the identification number stored in the storage element 110 and the content of the exhibit can be specified.

  On the other hand, the browsing terminal 200 transmits a radio wave as a power source to the storage element 110 to obtain the identification number, and a storage device 202 (stores data such as video information corresponding to the identification number). 2) and a display unit 203 for displaying the video information. According to the browsing terminal 200, short-range wireless communication can be performed at such a distance that the terminal antenna 201 of the browsing terminal 200 is touched or brought into contact with the marker antenna 111 of the marker unit 100. The information on the exhibited exhibits can be displayed on the display unit 203.

One of the features of the browsing terminal 200 is that a display housing 204 provided with the display unit 203 is projected from a main body housing 206 provided with a grip unit 205, and one surface of the display housing 204 is provided. The display unit 203 is provided with the terminal antenna 201 on the other surface.
In other words, the browsing terminal 200 can perform short-range radio by touching or bringing close to the marker unit 100. In this embodiment, a display unit 203 for viewing information is provided. Accordingly, the user must touch the terminal antenna 201 on the marker antenna 111 of the mark unit 100 while confirming information on the display unit 203. According to this embodiment, the terminal antenna 201 is placed on the back side of the display unit 203. The above problem can be solved.

  As shown in FIG. 3, one of the other features of the browsing terminal 200 is that a built-in product such as a fuel cell or a storage device is housed in a compact body housing 206. That is, in this embodiment, the main body housing 206 has a horizontally long and thin box shape in which the depth dimension D2 is larger than the height dimension H1 and the width dimension W1 is larger than the depth dimension D2 (see FIG. 5). By providing the grip portions 205 on both sides of the main body housing 206, the main body housing 206 can be securely supported with both hands.

  As shown in FIG. 3, in this embodiment, in order to realize the main body housing 206 with good support with both hands, a horizontally long and thin first power supply unit 207 is provided at the bottom of the main body housing 206. The storage device 202 and the second power supply unit 208 are arranged in parallel on the upper portion, the fuel tank 209 of the first power supply unit 207 is provided on one side of the storage device 202, and the upper portion of the second power supply unit 208 is provided. Is provided with a switch substrate 210a to be the operation unit 210.

  According to this embodiment, the main body housing 206 is thinned by stacking the thin storage device 202 and the second power supply unit 208 vertically on the top of the first power supply unit 207 occupying the largest area. It can be made into a horizontally long box shape. By providing the cylindrical fuel tank 209 on one side of the main body housing 206, the fuel tank 209 can be used as the main grip portion 205a. On the other hand, by providing the other one side of the main body housing 206 as the sub grip portion 205b and providing the switch substrate 210a in the vicinity thereof, the operation can be performed while holding the sub grip portion 205b.

  In other words, in this embodiment, both sides of the main body housing 206 are firmly held with both hands, firmly held via the main grip portion 205a with one hand, and held with the sub grip portion 205b with the other hand. Can be operated.

  In addition, as shown in FIG. 4, one of the other features of this embodiment is that the display housing 204 is provided so as to protrude in front of the main body housing 206 which can be operated while being held with both hands. is there. That is, in this embodiment, since the display unit 203 is provided on one surface of the display housing 204 and the terminal antenna 201 is provided on the other surface, the terminal antenna 201 is held while holding the main body housing 206 with both hands. And the marker antenna 111 can be easily aligned. In addition, since the user can inevitably see the display contents at the time of this alignment, the visibility is improved.

  Furthermore, as shown in FIGS. 3 and 4, in this embodiment, since the display housing 204 is connected to the main body housing 206 at a predetermined angle, the terminal antenna 201 and the marker antenna 111 are connected to each other. Positioning can be performed without forcing an unreasonable posture.

  Another feature of this embodiment is that the display housing 204 includes a control unit 211. That is, in this embodiment, a grip portion 205 that directly holds the main body housing 206 is employed. For this reason, if the control board 211a which comprises the control part 211 is arrange | positioned in this main body housing | casing 206, the thickness of the main body housing | casing 206 will become large and it will become difficult to hold | maintain. In this embodiment, since the fuel cell that generates moisture when generating electric power is used for the first power supply unit 207, it is necessary to avoid the proximity of the control board 211a that dislikes moisture. Therefore, in this embodiment, the problem is solved by arranging the control board 211a in the display housing 204.

  In this embodiment, a third device storage space 212 for forming the control board 211a is formed between the liquid crystal display panel 203a constituting the display unit 203 and the thin planar terminal antenna 201. The third device storage space 212 has a structure that becomes gradually thinner as it protrudes. On the control board 211a, large elements are arranged in a wide portion of the third device storage space 212, and small elements are arranged in a narrow portion.

  As described above, in this embodiment, by forming the display casing 204 in a tapered shape, the volume feeling of the display casing 204 can be reduced. And the marker antenna 111 can be easily seen. In addition, while having such an external shape, the internal mounting efficiency is enhanced.

Hereinafter, the browsing system according to this embodiment will be further described with reference to FIGS.
First, the configuration of the browsing system will be described with reference to FIG. 2, in this embodiment, the browsing terminal 200 is controlled by a control device 211 that controls the browsing terminal 200, a storage device 202 that stores various types of information, and a display that displays the stored information. Unit 203, a communication device 213 that enables near field communication with the marker unit 100, an operation unit 210 that instructs the control unit 211 to perform an operation, a first power supply unit 207 configured with a fuel cell, And a second power supply unit 208 composed of a rechargeable battery. On the other hand, the marker unit 100 is composed of an existing semiconductor element called a μ chip that includes a storage element 110 and a marker antenna 111.

The communication device 213 includes the terminal antenna 201. By transmitting radio waves from the terminal antenna 201, the marker unit 100 generates power and further receives an identification number signal transmitted from the marker unit 100. be able to. The storage device 202 stores a plurality of pieces of video information corresponding to the identification numbers stored in the marker unit 100.
Based on an operation instruction from the operation unit 210, the control unit 211 causes the display unit 203 to display a menu screen, various types of guidance, and video information corresponding to the identification number.

  The first power source 207 is a fuel cell that generates electricity based on fuel such as methanol provided from the fuel tank 209. On the other hand, the second power supply unit 208 is an extremely general rechargeable battery. In this embodiment, the first power supply unit 207 constantly generates power, charges the generated power to the second power supply unit 208, and supplies power to each device from the second power supply unit 208. Thus, a stable power source can be obtained by an operation that simply replaces the fuel tank 209 without charging from indoor wiring or the like.

Next, the internal arrangement of the browsing terminal will be described with reference to FIGS.
3 and 4, in this embodiment, the main body housing 206 is vertically divided into two via the partition wall 214, and the lower part is a first device arrangement space 215 that houses the first power supply unit 207, The upper part is a second device arrangement space 216. In this embodiment, since a fuel cell is used for the first power supply unit 207, the first device placement space 215 is separated and independent from the second device placement space 216. Thereby, it is reduced that the water | moisture content which generate | occur | produces from the said fuel cell causes trouble to other apparatuses. Further, since the first device storage space 215 is configured by the bottom surface of the main body housing 206 that comes into contact with the outside air, a wide discharge portion 217 for exhausting moisture is formed on the bottom surface that is difficult for the user to touch. It can be said that the layout is advantageous in terms of both function and design.

  On the other hand, a storage device 202 is disposed on one side in the longitudinal direction of the second device storage space 216. The storage device 202 is composed of a small magnetic disk machine and can store a large amount of data. Further, on the other side in the longitudinal direction, a second power supply unit 208 composed of a pair of thin rechargeable batteries is disposed. The second power supply unit 208 is disposed in a thin posture in the vertical direction and in the front-rear direction. A thin switch substrate 210 a is disposed on the second power supply unit 208.

In this embodiment, the end portion of the main body housing 206 on the switch board 210a side is a sub grip portion 205b, and the opposite end portion side of the main body housing 206 is a main grip portion 205a. As a result, the main grip unit 205a holds the browsing terminal firmly, and the sub grip unit 205b operates the operation unit 210 including the switch board 210a while holding the browsing terminal 200 as an auxiliary. it can.
Further, according to this configuration, the upper surface of the main body housing 206 can be formed almost flat without impairing the mounting efficiency, and the main body housing 206 can be formed into a thin, flat and compact shape.

  The main grip 205a is formed with a tank storage space 218 for storing a fuel tank 209 that supplies fuel to the first power source 207, which is a fuel cell. The tank storage space 218 can detachably store a columnar fuel tank 209 in a posture in which the longitudinal direction thereof is the depth direction of the main body housing 206, and the appearance is also rounded. In this embodiment, the tank storage space 218 is formed to project upward from the main upper surface of the main body housing 206. Thereby, since this overhang | projection part 219 can be made into a slip stopper, it can be set as the main grip part 205a which can hold | maintain the main body housing | casing 206 firmly.

In FIG. 4, this embodiment includes a display housing 204 formed so as to protrude rearward from the main body housing 206. The display housing 204 includes a third device storage space 212 that has a wide root portion when viewed from the side and becomes narrower as it goes forward. The upper surface of the display housing 204 is formed of a first inclined surface 220 that rises at a predetermined angle as it goes rearward from the upper surface of the main body housing 206, and a third inclined surface 220 that is inside the first inclined surface 220. The crystal display panel 203a constituting the display unit 203 is disposed in the device storage space 212.
Further, the bottom surface of the display housing 204 is formed with a second inclined surface 221 that rises from the bottom surface of the main body housing 206 toward the first inclined surface 220, and the inside of the second inclined surface 221. The terminal antenna 201 is provided in the third device storage space 212.

  A control board 211 a constituting the control unit 211 is disposed between the liquid crystal display panel 203 a of the third device storage unit 212 and the terminal antenna 201. The control board 211a has a small dead space by arranging a large element at the base of the third device storage space 212 and a small element at the tip.

  The third device storage space 212 is formed so as to communicate with the second device arrangement space 216, and stores the control unit 211 (control board 211a), the display unit 203 (liquid crystal display panel 203a), the terminal antenna 201, and the memory. A device 202 or the like is connected via a cord.

  Thus, in this embodiment, the viewing terminal 200 can be securely held with both hands via the grip portions 205 provided on both sides of the main body housing 206. Since the display unit 203 is disposed on the first inclined surface 220 that rises at a predetermined angle behind the main body housing 206, the visibility of the display unit 203 in a posture in which the main body housing 206 is supported by both hands. Can be improved. In addition, since the terminal antenna 201 is provided on the second inclined surface 221 on the back surface of the display housing 204, it is easy to align the marker antenna 111 and the terminal antenna 201 with the main body housing 206 supported by both hands. Can be done. In addition, the alignment can be performed while maintaining the visibility of the display unit 203.

In particular, in this embodiment, a terminal employing a fuel cell can take a compact form. That is, it is desirable that this type of portable terminal has a compact form. However, when a fuel cell is employed, a wide discharge part 217 for discharging moisture generated by power generation is necessary. For example, it is necessary to provide the discharge part 217 on the entire bottom surface as in this embodiment. Then, where to arrange the terminal antenna 201, the display unit 203, and the operation unit 210 becomes a big problem. Moreover. Since the fuel cell generates moisture at the time of power generation, a great contrivance is required to bring the control board 211a, the electronic device, and the like close to each other. Furthermore, it is necessary to solve these problems in consideration of the visibility of the display unit 203, the alignment of the two antennas 111 and 201, the retainability of the terminal housing (main body housing 206), and the like.
In this embodiment, all the above problems can be solved.

  Next, with reference to FIG. 5, the external structure of this browsing terminal will be described. 5, in this embodiment, the depth D2 of the main body housing 206 is 93 mm, the maximum depth D1 is 145 mm, the main thickness H1 of the main body housing 206 is 36 mm, and the thickness H2 including the main grip portion 205a. Is 40 mm and the width W1 is 160 mm.

  In FIG. 4A, the horizontal width of the display housing 204 is such that when the main grip portion 205a and the sub grip portion 205b on both sides of the main body housing 206 are supported by both hands, both hands are placed on the display housing 204. The size is set so as not to hit. And since the display part 203 is arrange | positioned in the center of this display housing | casing 204, since the user who sees the display part 203 does not have the visual angle noise which blocks the part which the marker part 100 touches around the display part 203, It is easy to align the two antennas.

  The main grip portion 205a is provided with a confirmation window 222 for viewing the remaining amount of fuel. On the side of the sub grip portion 205b, a circular operation button 227 provided on the operation board 211a and a rectangular operation button are provided. A button 228 is provided. In this embodiment, anyone can easily operate the viewing terminal by giving an operation instruction with two operation buttons.

  In FIG. 2B, the discharge portion 217 provided on the bottom surface of the main body housing 206 is composed of a plurality of small holes, and a wire or the like enters the inside through the holes, thereby hindering the fuel cell. I try not to play. Further, the second inclined surface 221 provided on the bottom surface of the display housing 204 is covered with a seat 223 provided with a cushion material so as not to be damaged when contacting the marker unit 100.

  In this embodiment, the first inclined surface 220 of the display housing 204 is inclined from the upper surface of the main body housing 206 by a predetermined angle θ1 in the (c) view showing the front view and the (d) view showing the right side view. Just starting up and forming. In this embodiment, the angle θ1 is set to about 30 degrees, and when the main body housing 206 is held with both hands, the angle is set to an angle that is easy to see with little reflection of ceiling lighting or the like.

  Further, the second inclined surface 221 is formed by rising from the bottom surface (substantially parallel to the top surface) of the main body housing 206 by a predetermined angle θ2. In this embodiment, the angle θ2 is set to about 45 degrees, and the angle is easy to align with the portion that the marker portion contacts when the main body housing 206 is held with both hands.

  In particular, the predetermined angle θ2 of the second inclined surface 221 has a large meaning. For example, when the angle θ2 is a right angle, the contact portion of the marker portion is a vertical surface, and it is difficult to adjust the contact. Similarly, when the angle θ2 is horizontal, the contact portion of the marker portion becomes a horizontal surface, and it is difficult to adjust the contact portion. For this reason, in this embodiment, the angle θ2 is set to the predetermined angle. The angle θ2 is related to the angle θ1 to reduce the volume of the display housing 204 projecting outward while securing the third device storage space 212 in which the control board 211a can be stored.

  In (d) and (e) showing the rear view, 224 is an external connection connector, 225 is an emergency power connector, and 226 is a lid for taking the fuel tank 209 into and out of the tank storage space 218.

  Next, a specific external shape of the marker unit 100 will be described with reference to FIG. In FIG. 6, the marker portion of this embodiment has a prismatic shape having a height H3 of 1330 mm. That is, in this embodiment, the meaning of the sign is given. Two projecting portions 112 projecting in a triangular shape are arranged above and below the mark portion, and the upper portion is used for adults and the lower portion is used for children. In this embodiment, the height H4 of the protrusion 112 is set to about 770 mm. An upper portion of the protruding portion 112 is an inclined surface 113 set to about 45 degrees in accordance with the second inclined surface θ2, and a touch portion 114 is provided on the inclined surface 113. The storage element 110 and the marker antenna 111 covered with a sheet or the like are provided. Reference numeral 115 denotes a guidance display indicating a touched part.

  Next, with reference to FIG.7 and FIG.1, the usage method of this browsing system is demonstrated. In FIG. 1, this browsing system is used to rent a browsing terminal 200 at a reception of a museum or an exhibition hall, for example, and collect it at the reception after browsing. The mark unit 100 is installed at a predetermined position for each exhibit. Since the mark unit 100 does not use a power source, it can be installed without having to consider the relationship with the power cord.

In FIG. 7, first, the user who borrows the browsing terminal 200 presses the circular operation button 227 for a long time to turn on the power. Of course, a separate power button may be provided.
When the power is turned on, the control unit 211 displays an initial screen 300 of a “Welcome” message as shown in FIG. ) A guidance display screen 310 as shown in the figure is displayed.

  In this embodiment, except for the initial screen 300 with some exceptions, a guidance character area 301 is provided at the top, a guidance picture display area 302 at the center, and an operation button function display area 303 at the bottom. In the guidance display screen 310, characters such as “Please press the A and B buttons according to the instructions on the screen” are displayed in the guidance character area 301 at the top, and the operation button is displayed in the guidance picture display area 302 in the center. A drawing showing the location is displayed, and guidance for pressing (operating) the A button is displayed in the operation button function display area 303 at the bottom.

  When the circular operation button 227 to which the A button is set is pressed, the control unit 211 displays a display screen 320 for selecting a language as shown in (c), and when the language is selected, the language When the confirmation operation 330 is displayed and a confirmation operation is selected, a guidance screen 340 showing an information acquisition method as shown in FIG. Then, a radio wave is transmitted from the terminal antenna 201 and the identification number is received.

  As shown in FIG. 1, when the user brings the display housing 204 into contact with or approaches the touch unit 114 of the mark unit 100, the storage element of the mark unit 100 receives radio waves via the marker antenna 111. It starts when receiving. Then, the stored identification number is transmitted from the marker antenna 111.

When the control unit 221 receives the identification number, the control unit 221 retrieves and calls program data including video information and audio information corresponding to the identification number from the database of the storage device 202, executes the program data, and executes the video. Information is displayed on the display unit 203. For example, FIG. 5F shows an example display screen 350. Subsequent operations are operated at any time by two operation buttons.
The power OFF is executed by long pressing the circular operation button 227.

  In the above description, the display housing 204 is fixed to the main body housing 206. However, the display housing 204 is movable with respect to the main body housing 206 by connecting both housings with the connecting portion. It may be provided as possible.

It is an external view of a browsing system. It is an apparatus block diagram of a browsing system. It is an arrangement plan of an internal device of a main body case. It is a longitudinal cross-sectional view of a main body housing | casing. It is an external view of a browsing terminal It is an external view of a marker part. It is a screen transition diagram of a browsing terminal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Marker part, 110 ... Memory element, 111 ... Marker antenna, 112 ... Projection part, 113 ... Inclined surface, 114 ... Touch part, 200 ... Viewing terminal, 201 ... Terminal antenna, 202 ... Memory | storage device, 203 ... Display part, 203a ... Liquid crystal display panel, 204 ... Display casing, 205 ... Grip section, 205a ... Main grip section, 205b ... Sub grip section, 206 ... Main body casing, 207 ... First power supply section, 208 ... Second power supply section 209 ... Fuel tank 210 ... Operation unit 210a ... Switch board 211 ... Control unit 211a ... Control board 212 ... Third device storage space 213 ... Communication device 214 ... Partition wall 215 ... First Device placement space, 216 ... second device placement space, 217 ... discharge portion, 218 ... tank storage space, 219 ... overhang portion, 220 ... first inclined surface, 221 ... second ,... Confirmation window, 223... Sheet, 224... External connection connector, 225... Emergency power connector, 226 .. Lid, 227.

Claims (4)

  A main body housing having a grip portion for holding an information communication device, and a display housing provided so as to protrude from the main body housing, the display housing having a display device on one surface and the other housing An information communication apparatus comprising an antenna that enables communication on a surface or a short distance close to the contact. It is composed of a main body housing having a storage device and a power supply device, and a display housing provided with an antenna that enables communication at a short distance close to or in contact with the display device,
The main body housing includes grip portions for holding the information communication device on both sides thereof.
The display casing is formed to project rearward from the main body casing, includes a display unit on an upper surface of the display casing, and includes the antenna on a lower surface of the display casing. apparatus. In the information communication apparatus according to claim 1 or 2,
The display housing includes a control unit between the display unit and the antenna. In the information communication apparatus according to any one of claims 1 to 3,
The main body case is divided into two parts up and down via a partition wall, a fuel cell in the lower part, and a storage device in the upper part,
An information communication apparatus comprising a fuel cell tank detachably housed on one side of the main body casing in a posture in which a longitudinal direction thereof coincides with a depth direction of the main body casing.

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