JP2007272916A - Information terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance heat radiation effect of a battery used in a battery-driven information terminal device equipped with a flat panel display or the like. <P>SOLUTION: The information terminal device 1 of a thin casing structure equipped with at least a display (not shown) and driven by battery power comprises: a battery pack 10 which is a substantially planar battery pack composed of a plurality of battery cells being secondary batteries, and a package for housing the plurality of battery cells, and outputs the battery power; and a rotation support mechanism for rotating a lower side part of the battery back 10 from a lower side part of a back surface side 1d of a thin casing with an intermediate point of the back surface side 1d of the thin casing as a supporting point to be freely opened and closed. Further, the information terminal device 1 is composed so that it independently stands with the rotated battery pack 10 as a stand and the battery pack 10 directly touches outer air. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention includes a flat panel display (FPD) such as a liquid crystal display (LCD) and the like, and is driven by a battery, such as a portable phone, a portable information terminal, and a portable television receiver with a flat panel display. -It is related with the information terminal device of a lightweight thin housing structure.

  As an information terminal device equipped with a flat panel display such as a liquid crystal display and driven by a battery, a portable telephone, a portable information terminal, and a portable television receiver (hereinafter also referred to as a television) equipped with a flat panel display. Various types are conceivable and are commercially available. As a mounting and holding mechanism for the battery pack for storing the battery in that case, a structure in which the battery pack is inserted into the battery pack storage part from one side of the apparatus and a battery cover is attached to the battery pack storage part has been often used. .

  For example, FIG. 11 shows an example of a conventional information terminal device. Reference numeral 100 denotes a monitor device as an information terminal device provided with a display. The monitor device 100 houses a battery pack 101 in the vicinity of the center of the rear surface 100d, and a battery cover 104 is mounted on the battery pack 101. 110 is attached so as to be openable and closable (turnable) about a pivot shaft (not shown). The stand 110 is taken out from a stand storage groove (not shown) and opened by a predetermined angle to allow the monitor device 100 to stand by itself.

  FIG. 12 shows a state where the battery cover 104 of the monitor device 100 is removed. When the battery cover 104 on the back surface 100d is removed, a battery pack storage hole 103 is provided inside, and the battery pack 101 is inserted into the battery pack storage hole 103, and the battery cover 104 is mounted thereon. . Reference numeral 102 denotes each battery cell of the battery stored in the battery pack.

  In order to solve the problem of the degree of freedom in designing when the device has multiple functions, a battery pack having a structure in which a battery pack housing portion is provided at the center of the back surface of the device, for example, has been proposed ( For example, see Patent Document 1.)

JP 2002-169630 A

  Typical examples of the battery used for driving the battery as described above include a secondary battery such as a lithium ion battery and a fuel cell such as a hydrogen fuel cell. These have the property of self-heating during charging / discharging, and when the temperature of the secondary battery becomes high due to this heat generation, or storage at a high temperature, the reduction of the battery capacity recovery rate is promoted. This is a major factor.

  Currently, in order to realize a battery-driven information terminal device, a flat panel display consumes a large amount of power, and the power consumption of the entire system of the device is high performance such as a CPU (Central Processing Unit) and a DSP (Digital Signal Processor). -Because of the high frequency operation, the device consumes very large power. At least a device having a flat panel display as described above needs to be equipped with a battery pack capable of supplying a large current in order to view content that requires a large amount of data processing and also requires brightness, such as television broadcasting. is there.

  The problems when using the battery pack of the prior art are that the battery cell generates heat during charging and discharging, and the heat generation of each component and element inside the housing including the battery pack. Most electronic components have a guaranteed operating temperature of around 70 ° C, but the battery cell inside the battery pack is one of the components that must maintain the temperature close to room temperature among the components of information terminals. It is.

  Battery cell operation guarantee temperature and life guarantee temperature are often 45 ° C during charging and 60 ° C during heat dissipation. Considering this, the temperature of battery pack packages is slightly lower than those temperatures. (The ideal use temperature should be around 25 ° C.). If this proper temperature is not observed, the battery life will gradually shorten, and eventually the battery itself may not be able to perform its function.

  As a method to solve these problems, partial heat dissipation of heat sinks, heat pipes, etc. by metal parts, external heat dissipation that conducts heat to the whole case with the device as a metal case, forced cooling with built-in fan, liquid medium is used Water-cooled cooling can be considered.

  Among these, metal parts become unnecessary antennas in the case of information terminal devices that involve wireless communication, and are difficult to use because of large obstacles in wireless communication, which is disadvantageous in terms of weight. The same applies to water-cooled cooling with a liquid medium. Further, since the fan is noisy, it is not preferable to use it for a portable device, and it is not easy to mount the fan effectively in a small and lightweight thin casing.

  At present, attention is focused on heat problems in information terminal devices as a case-type high-speed communication device such as a notebook PC (personal computer) or a server, a device such as a TV that requires high power, a portable type, etc. It can be roughly divided into three types, such as a wireless communication device that can be designed with low power consumption like a telephone and can be driven by a battery. The battery pack must be radiated while simultaneously satisfying all the problems of these three types of devices, such as noise-free, lightweight and thin, and high-sensitivity wireless communication.

  However, although the information terminal device with a built-in battery pack as described in the cited document 1 is designed to improve the degree of freedom in design when the battery pack is mounted, it is considered to enhance the heat dissipation effect of the battery pack. However, since the battery pack is confined in the information terminal device casing, the heat generated from the electric circuit such as the self-heating of the battery, the heat generation of the display, and the IC (Integrated Circuit) is confined in the information terminal apparatus casing.

  For example, FIG. 13 shows the periphery of the battery pack portion in the cross-sectional view of FIG. 12A-A, and the battery pack 101 is stored in the battery pack storage hole 103 provided in the back surface 100d of the monitor device 100. Covered with a battery cover 104. As indicated by the arrow, the battery pack 101 is not exposed to the outside air 120 through the battery cover 104 and receives heat 121 from an electric circuit or the like from the inside of the monitor device 100.

  Under these circumstances, in order to keep the temperature of the battery cell properly, not only another cooling device is required, but also measures are difficult due to various factors such as weight, wireless communication failure, safety, etc. There is an inconvenience that shortening the use time of the battery (deterioration of the battery) is promoted.

  In view of the above, an object of the present invention is to provide an information terminal device that enhances the heat dissipation effect of a battery pack of an information terminal device that includes a flat panel display or the like and is driven by a battery.

  In order to solve the above-described problem, an aspect of the present invention provides an information terminal device having a thin housing structure that includes at least a display and is driven by battery power, and includes a plurality of battery cells that are secondary batteries and the plurality of battery cells. A substantially flat battery pack comprising a package for housing, a battery pack for outputting battery power, a thin housing for housing at least the display and facing the display from the front side, and the thin housing A rotation support mechanism for rotating the lower side portion of the battery pack from the lower side portion of the thin housing in a freely openable / closable manner with the back side intermediate portion as a fulcrum. Then, the information terminal device is made independent by using the rotated battery pack as a stand, and the side facing the back of the thin casing of the package of the battery pack and the opposite side are in direct contact with the outside air. It is characterized by that.

  Another aspect of the present invention provides a plurality of battery cells that are secondary batteries and a package that accommodates the plurality of battery cells in an information terminal device having a thin housing structure that includes at least a display and is driven by battery power. A battery pack for outputting battery power, a substantially flat battery pack housing member to which the battery pack is attached and detached, and at least a display for storing the display. A thin housing that can be exposed from, and a rotation support mechanism that pivots the lower side of the battery pack housing member from the lower side of the back of the thin housing, with the back side intermediate portion of the thin housing as a fulcrum, It comprises. Then, the information terminal device is made independent as a stand in which the rotated battery pack housing member is integrated with the battery pack, and at least the surface of the battery pack package opposite to the side facing the back of the thin casing is outside air. It is the structure which touches directly.

  According to the configuration of the present invention described above, the battery pack of the information terminal device having a thin housing structure is used as a stand for opening and closing freely or as a part of the stand so that the display is self-supporting. While realizing stable independence, the battery pack package can directly touch the outside air, improving heat dissipation.

  According to the present invention, since the battery pack of the information terminal device having a thin housing structure is used as a stand for pivotally opening or closing, or as a part of the stand, and the display is made to stand on its own, While realizing the above, the battery pack package can directly touch the outside air, and the heat dissipation effect is enhanced.

  As described above, the battery pack is used as a stand or a part thereof, and the heat radiation effect is enhanced, so that the shortening of the battery usage time (deterioration of the battery) can be greatly suppressed, and the information terminal device Contributes to further high performance, high speed, mass data processing, energy saving and downsizing.

  Hereinafter, exemplary embodiments of an information terminal device of the present invention will be described with reference to the drawings. An example of the following embodiment is a case where the present invention is applied to a monitor device 1 of a system including the monitor device 1 and the base device 200 as shown in FIG.

  The system shown in FIG. 10 is a kind of a wireless LAN (Local Area Network) system constructed in a limited area such as a house, and includes a monitor device 1 and a base device 200.

  In this example, the monitor device 1 is provided with a display such as a liquid crystal display (LCD) 2 and speakers 3 and 4 in the front portion 1a, and so-called patch antennas 5 and 6 for wireless communication with the base device 200 therein. Is provided.

  The base device 200 is provided with a tuner 201 for receiving television broadcasting, a modem 202, and so-called patch antennas 203 and 204 for wireless communication with the monitor device 1, and the tuner 201 is for receiving television broadcasting. The modem 202 is connected to the telephone line 220, and the monitor device 1 receives a television broadcast by wireless communication with the base device 200, accesses the Internet, and sends and receives e-mails. Configured to be able to.

  The base device 200 can be connected to a device such as a video deck, a DVD player, a tuner for receiving digital CS broadcasts and BS digital broadcasts as an external device 230, and the monitor device 1 is connected to the base device 200. It is configured to be able to receive video and audio information obtained from the external device 230 through wireless communication, and a remote control transmitter 250 such as an AV mouse can be connected to the base device 200 and transmitted from the remote control transmitter 250. The remote control signal light is received by a remote control light receiving unit 240 provided in the external device 230, so that the external device 230 can be controlled by the monitor device 1. Here, “remote controller” is an abbreviation for “remote controller” that performs remote operation.

  According to the above system, the user places the base device 200 fixedly in a place such as a living room, carries the monitor device 1 to an arbitrary place such as a house or a garden, and the monitor device at hand at an arbitrary place. 1 can perform functions such as receiving television broadcasts, accessing the Internet, and sending and receiving e-mails.

  At this time, the user can also use the monitor device 1 with his / her hand. However, the user opens the stand, which will be described later, and places the monitor device 1 on an appropriate surface with an appropriate inclination angle by the bottom surface of the monitor device 1 and the stand. The LCD (screen) 2 can be viewed by making it independent.

  3 shows an example of an embodiment of a monitor device to which the information terminal device of the present invention is applied. FIG. 3A shows a rear view, FIG. 3B shows a side view, and FIG. 3C shows a bottom view.

  A battery pack 10 having a stand function, which will be described later, is stored in the battery pack storage groove 12 below the back surface 1d of the LCD 2 of the monitor device 1. The monitor device 1 has, for example, a rotation shaft 21 in the lateral (width) direction of the back surface portion 1 d, and the rotation shaft 21 is passed through a bearing hole 20 provided in the lateral direction on the battery pack 10 of the monitor device 1. The battery pack 10 is configured so as to freely open and close with the rotation support portion as a rotation fulcrum. The battery pack 10 functions as a stand to make the monitor device 1 stand alone.

  Front part 1a and back part 1d are joined by fixing means, such as each square screw, for example. For example, as described in Japanese Patent Application Laid-Open No. 2002-169630, vent holes (not shown) are provided on both side surfaces of the rear portion 1d, and a non-slip body made of rubber or the like is attached to the bottom surface of the rear portion 1d. You may do it. Further, the bottom surface portion 10a of the battery pack 10 having the stand function shown in FIG. 3B is designed to have an appropriate angle so that the monitor device 1 can be stably and independent when the battery pack 10 is opened at an arbitrary angle. It is preferable.

  FIG. 1 is a rear perspective view showing an example of an embodiment of a monitor device to which the information terminal device of the present invention is applied. In FIG. 1, parts corresponding to those in FIG. As shown in FIG. 1, the battery pack 10 is opened from the battery pack housing groove portion 12 of the back surface portion 1b to function as a stand so that the monitor device 1 is self-supporting. Further, in this example, the battery pack 10 is configured by accommodating, for example, a battery in which four rows of battery cells 102 are arranged in the package 11.

  FIG. 2 shows a cross-sectional view of the battery pack 10 shown in FIG. In FIG. 2, parts corresponding to those in FIG. By functioning the battery pack 10 as a stand so that the battery pack 10 can be freely opened and closed, the battery pack 10 can be separated from the main body of the monitor device 1 and the upper and lower surfaces of the package 11 of the battery pack 10 can be directly in contact with the outside air.

  When the monitor device 1 is not used or placed on a dedicated charging stand, the battery pack 10 can be closed and stored in the battery pack storage groove 12. Even in this state, the battery pack 31 is configured such that the surface opposite to the side facing the monitor device 1 directly touches the outside air.

  Since the battery pack 10 which is relatively heavy among the monitor device 1 is used as a stand, the center of gravity position is closer to the table top side than the light stand 110 using, for example, plastic shown in FIG. Stable down. In addition, the weight load on the battery pack 10 and the rotation support portion is reduced, and even if the friction coefficient of the rotation support portion is small, the battery pack 10 and the rotation support portion are not easily tilted against vibration and impact.

  4A and 4B show examples of the rotation support mechanism of the battery pack 10, respectively. 4A, as described above, the bearing hole 20 is provided in the upper lateral direction of the battery pack 10, and this bearing hole 20 passes through the rotating shaft 21 provided on the monitor device 1 side shown in FIG. The battery pack 10 is pivoted from the monitor device 1 so as to be opened and closed with the pivot shaft 21 as a fulcrum. The bearing hole 20 may not be penetrated depending on the relationship with the rotating shaft 21.

  The rotating shaft 21 and the bearing hole 20 are in sliding contact with an appropriate rotational torque, and when the monitor device 1 and the battery pack 10 having a stand function are set to an arbitrary angle within the range of the deployment angle, the angular position is set. It is set as the structure hold | maintained.

  FIG. 4B shows an example in which the battery pack 10 is provided with a rotation support arm portion. For example, the first rotation support arm 26 is fixed to the side surface 10 b of the battery pack 10 by fixing members 26 a and 26 a such as screws, and is coupled to the second rotation support arm 27 via the rotation fulcrum 25. The second rotation support arm 27 is coupled to, for example, the upper periphery of the battery pack housing groove 12, that is, the vicinity of the back side intermediate portion of the monitor device 1, and the first movable support arm around the rotation fulcrum 25. Is rotated (if necessary, the second movable support arm portion may be moved with the coupling point with the monitor device 1 as a movable fulcrum) so that the battery pack 10 can be rotated. Although not described with reference numerals, the same configuration is applied to the opposite side surface.

  4B, similarly to the above-described example, the monitor device 1 and the battery pack 10 having a stand function are held at the set angle position when an arbitrary angle is set within the development angle range.

  These rotation support mechanisms shown in FIGS. 4A and 4B are examples, and various other rotation support mechanisms can be considered using known techniques.

  As described above, when the battery pack 10 is used as a stand, the shape of the bottom portion 10a in contact with the floor of the battery pack 10 is slightly bowed by applying the shape of the stand 153 described in JP-A-2002-169630. It is also possible to be bent so that it touches the floor at the two contact points on the outside (not shown).

  When the span of the abutting portion of the bottom surface portion 10a is widened or the length of the bottom surface portion 10a is increased in the width direction, it is resistant to vibration and inclination of the table top surface, and is stably monitored. 1 can be held and self-supported at an arbitrary angle within the expansion angle range of the battery pack 10. Therefore, the reception sensitivity between the monitor device 1 and the base device 200 is improved, and at the same time, the screen 2 is easy to see and the handling property is excellent.

  In addition, when the two points of the contact portion are brought into contact with the floor surface, the surface of the bottom surface portion 10a of the battery pack 10 is hardly damaged or soiled. Furthermore, even if the battery pack 10 is curved in the width or vertical direction according to the design of the monitor device 1, the contact portion can always be attached to the floor surface, so that various designs can be handled without problems. .

  Further, instead of the two contact portions formed by curving the bottom surface portion 10a of the battery pack 10 that contacts the floor, for example, a pair of protrusions (not shown) is provided at a portion corresponding to the contact portion. It may be. Moreover, you may make it provide antiskid bodies, such as rubber | gum, in the bottom face part 11b.

  In this case, since the protruding portion is in contact with the table top surface, the surface of the bottom surface portion 10a of the battery pack 10 is not easily damaged or soiled. Furthermore, even if the battery pack 10 is curved in the width or lengthwise direction according to the design of the monitor device 1, the protrusions always protrude outward from the bottom surface so that they can be attached to the floor surface. Yes. In addition, it can be easily understood that the same operational effects as those obtained when the bottom surface portion 10a of the battery pack 10 is curved and is brought into contact with the floor surface at two points are obtained.

  As described above, according to this example, the battery pack 10 has a stand function so that the battery pack 10 can be rotated, so that the package 11 of the battery pack 10 can directly touch the outside air while realizing stable independence. In addition, as in this example, the heat dissipation effect of the battery pack 10 of the monitor device 1 that mounts a display such as the LCD 2 and performs wireless communication or the like is improved.

  Further, when a heat transfer gel 13 or the like is inserted into the package 11 of the battery pack 10 to transfer heat from each battery cell 102 to the package 11, a further heat dissipation effect can be expected. Even if the package 11 is made of a material having high thermal conductivity, a short circuit from a substrate component or the like becomes a problem inside the housing, but the possibility is extremely low.

  Conventionally, the arrangement of parts inside the casing has a center of gravity and a limited arrangement due to the battery pack 10 being inside, but this measure improves the degree of freedom of the arrangement of parts inside the casing. Various countermeasures such as a heat problem, a radio communication failure, and a noise problem can be reduced, and it becomes possible to design an information terminal device having a light weight, a small and thin casing structure.

  Further, by using the battery pack 10 as a stand, a space for storing a conventional dedicated stand is unnecessary, the degree of freedom in designing the back surface portion 1d inside the monitor device 1 is improved, and the same effects as described above are obtained. It is done.

  In addition, the battery pack 10 is provided with a stand function so that it can rotate and can be pulled out and stored freely. Therefore, the basic shape of the conventional monitor device 1 that is small, lightweight, and has excellent operability and design. Will not break down. Therefore, usability during normal carrying and use in hand is not impaired.

  FIG. 5 is a rear perspective view showing another example of the embodiment of the monitor device to which the information terminal device of the present invention is applied. The battery-integrated stand 30 comprising the battery pack housing member 32 that houses the battery pack 31 is opened to allow the monitor device 1 to stand on its own. In addition, about the drawing which concerns on description of the example of FIG. 5 described below, the part corresponding to drawing based on description of the example of FIG.

  A bearing hole 20 is provided in the upper horizontal direction of the stand housing member 32 constituting the battery-integrated stand 30 of the back surface portion 1d, and a rotating shaft (not shown) provided on the monitor device 1 side is used as an axis as in the example of FIG. Through this, a rotation support mechanism is formed, and the battery-integrated stand 30 is pivotably opened and closed with the rotation shaft as a rotation fulcrum. Reference numeral 34 denotes a lock knob for fixing the battery pack 31 to the battery pack housing member 32.

  By opening the battery-integrated stand 30, the distance between the battery pack 31 and the monitor device 1 body can be increased, and heat dissipation of the battery pack 31 is promoted.

  6A is a rear view of the monitor device with the battery pack removed, and FIG. 6B is a side view. As shown in FIG. 6A, the battery pack 31 includes a lock knob engaging portion 33 and a battery terminal 35 which are engaged with the lock knob 34 at a predetermined position on the upper end portion. In this example, a well-known technique is used. For example, when the battery pack 31 is stored in the battery pack storage groove 38, the battery pack 31 is configured not to be detached from the battery storage member 32 when the lock knob 34 is slid to the lock side. Yes.

  FIG. 6B shows a state in which the battery-integrated stand 30 including the battery pack 31 and the battery pack storage member 32 is closed, and a state in which the battery-integrated stand 30 is opened within a predetermined angle range around the pivot point. However, the battery-integrated stand 30 in the opened state represents a CC cross-sectional view of FIG.

  When the monitor device 1 is not used or placed on a dedicated charging stand, the battery-integrated stand 30 can be closed and stored in the stand storage groove 37. At this time, the battery pack 31 stored in the battery pack storage member 32 directly touches the outside air on the side opposite to the side facing the monitor device 1.

  FIG. 7 shows a rear view of the monitor device 1 of the example of FIG. 5 and is expressed in a watermarked state for explaining the internal structure of the battery pack housing member 32. Reference numerals 34a and 36a denote holes into which the lock knob engaging portion 33 and the battery terminal of the battery pack 31 are inserted, respectively. When the battery pack 31 is mounted, each terminal of the battery terminal 35 comes into contact with a predetermined terminal of the battery terminal board 36 for making electrical contact with the battery pack 31 provided on the monitor device 1 side. It has become.

  In addition, hinge mechanisms are provided on the left and right sides of the battery pack housing member 32. As shown in the figure, the movable members 41 and 42 are fixed and attached to the left and right sides of the battery pack housing member 32 by fixing members 41a and 42a such as screws, respectively. On the other hand, fixing members 45 and 46 are also fixed and attached to the back surface of the monitor device 1 with fixing members 45a and 46a such as screws, respectively. Then, the movable member and the fixed member are coupled to each other through hinges 43 and 44, respectively, so that the movable members 41 and 42 move on the circumference with the hinges 43 and 44 as pivot axes. Thereby, the battery pack storage member 32 can be opened and closed freely.

  At this time, the hinge 43 is hollow and the wiring 47 from the battery terminal board 36 is connected to a main board (not shown) that controls the monitor device 1 through the hole of the hinge 43. By passing the wiring from the hinge hole, the connection between the main board and the battery pack 31 is maintained even when the battery pack housing member 32 is opened and closed.

  8A and 8B are perspective views illustrating the shape of the battery pack storage groove of the battery pack storage member 32, respectively. Reference numeral 32 a denotes a battery pack receiving portion on which the battery pack 31 is placed when the battery pack 31 is stored in the battery pack storage member 32.

  Further, for example, a guide groove 40 bent at a right angle is provided on the side surface of the battery pack housing groove portion 38, and a projection (not shown) having a predetermined shape corresponding to the guide groove 40 is provided on the side surface of the battery pack 31. In this way, when the battery pack is stored, the guide groove 40 and the protrusion are brought into sliding contact with each other, so that the battery pack 31 can be smoothly mounted and the battery pack can be fixed and prevented from rattling. The shape of the guide groove and the protruding portion is a well-known technique, and various configurations are possible without being limited to this example.

  Further, for example, if a lattice-shaped hole (not shown) is appropriately provided in the battery pack receiving portion 32a, the battery pack 31 can also be exposed to the outside air through the lattice-shaped hole even on the surface that contacts the battery pack receiving portion 32a. Thus, when the battery-integrated stand 30 is opened, the upper and lower surfaces of the battery pack 31 come into contact with the outside air, and a higher heat dissipation effect can be expected.

  FIG. 8B is a partial improvement of the battery pack housing member 32 of FIG. 8A, but the description of the parts corresponding to FIG. 8A, such as the lock knob 34, the holes 34a and 36a, the guide groove 40, etc., is omitted. expressing. In FIG. 8B, a large hole is provided in the battery pack receiving portion 32a shown in FIG. 8A to form battery pack receiving portions 32b and 32b.

  In this way, when the battery pack 31 is stored in the battery pack storage member 32 and the battery-integrated stand 30 is opened to allow the monitor device 1 to stand on its own, the upper and lower surfaces of the package are positioned as shown in FIG. It comes in contact with the outside air, and the heat dissipation effect can be further enhanced.

  FIG. 9 shows an example of a method for storing and fixing the battery pack 31 in the battery pack storage member 32. 9A shows a state in the middle of storing the battery pack 31 in the battery pack storage member 32, and FIG. 9B shows a state after the battery pack 31 is stored in the battery pack storage member 32.

  As shown in FIG. 9A, hook-shaped locking projections 51 and 52 are provided on one side surface of the battery pack 31 in the insertion direction. In addition, hook-shaped locking portions 51 a and 52 a are respectively provided on portions of the battery pack housing member 32 corresponding to the locking protrusions 51 and 52 provided on the battery pack 31. The locking portions 51a and 52a have an elastic force and can move in the horizontal direction of the drawing in accordance with an external force.

  The battery pack 31 is inserted into the battery pack storage groove 38 of the battery pack storage member 32 with the surface having the locking projections 51 and 52 as the head. When the locking projections 51 and 52 are inserted into the holes (dotted line portions) provided with the locking portions 51a and 52a of the battery pack storage member 32 and come into contact with the locking portions 51a and 52a, the locking portions 51a and 52a are Each escapes laterally by contact with the locking projections 51 and 52.

  When the battery pack 31 is further inserted, as shown in FIG. 9B, the locking projections 51 and 52 and the locking portions 51a and 52a are engaged with each other, and the battery pack 31 is fixed to the battery pack housing member 32. . At this time, for example, if the lock knob 34 is slid to the lock side, it can be easily recognized that it is locked.

  When the battery pack 31 is removed from the battery pack mounting member 32, for example, the lock knob 34 is manually slid in the unlocking direction, and the locking portions 51a and 52a are moved to remove the battery pack 31, for example. These locking mechanisms only need to be able to fix the battery pack, and are not limited to this example, and various other configurations are possible using well-known techniques.

  As described above, according to this example, the battery-integrated stand 30 is configured by the battery pack 31 and the battery pack storage member 32 for storing the battery pack 31 and can be opened and closed freely. In this way, the battery pack 31 can directly touch the outside air, improving the heat dissipation effect of the battery of the monitor device 1 that is equipped with a display such as the LCD 2 and performs wireless communication or the like. In addition, it can be easily understood that the same effects as those of the example of FIG. 1 can be obtained.

  The present invention is not limited to the embodiment described above, and the monitor device 1 having a display screen and the base device 200 that performs information processing, data communication with an external device, and the like are integrated, and the battery Of course, various other configurations can be adopted without departing from the gist of the present invention, such as a portable telephone, a portable information terminal, a television receiver equipped with a flat panel display, etc. is there.

It is a back perspective view which shows the example of embodiment of the monitor apparatus to which this invention information terminal device is applied. It is the BB sectional view taken on the line of FIG. It is a general | schematic external view which shows the front of the example of embodiment of the monitor apparatus to which this invention information terminal device is applied, a side surface, and a bottom face. It is a diagram with which it uses for description of this invention information terminal device. It is an external appearance perspective view which shows the other example of embodiment of the monitor apparatus to which this invention information terminal device is applied. It is a schematic external view which shows the front of the other example of embodiment of the monitor apparatus to which this invention information terminal device is applied, a side surface, and a bottom face. It is a rear view which shows an example of the structure of the stand periphery of the example of FIG. FIG. 6 is a perspective view illustrating an example of a battery pack housing member of FIG. 5 example. It is a diagram with which it uses for description of an example of the mounting method of a battery pack storage member and a battery pack. It is a block diagram which shows an example of the system using the monitor apparatus with which this invention information terminal device was applied. It is an external appearance perspective view which shows an example of the conventional information terminal device. It is a diagram which shows an example of the battery pack accommodation of the conventional information terminal device. It is AA sectional view taken on the line of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Monitor apparatus, 2 ... LCD (screen) 10, 31 ... Battery pack, 11 ... Package, 12 ... Battery pack storage groove part, 30 ... Battery integrated stand, 32 ... Battery pack storage member, 38, 39 ... Battery pack Storage groove

Claims (2)

In an information terminal device having a thin casing structure that is at least provided with a display and is driven by battery power,
A substantially flat battery pack comprising a plurality of battery cells that are secondary batteries and a package that houses the plurality of battery cells, the battery pack outputting the battery power;
A thin casing that houses at least the display and faces the display from the front side;
A pivot support mechanism for pivotally opening and closing the lower side of the battery pack from the lower side of the back side of the thin case, with the back side middle part of the thin case as a fulcrum;
Comprising
The information terminal device is made to stand on its own with the rotated battery pack as a stand, and the side facing the back of the thin casing of the package of the battery pack and the opposite surface are directly in contact with the outside air. An information terminal device. In an information terminal device having a thin casing structure that is at least provided with a display and is driven by battery power,
A substantially flat battery pack comprising a plurality of battery cells that are secondary batteries and a package that houses the plurality of battery cells, the battery pack outputting the battery power;
A substantially flat battery pack housing member to which the battery pack is attached and detached;
A thin casing that houses at least the display and faces the display from the front side;
A pivot support mechanism for pivotally opening and closing the lower side of the battery pack housing member from the lower side of the back side of the thin case, with the back side middle part of the thin case as a fulcrum;
Comprising
The information terminal device is self-supported as a stand integrated with the battery pack housing member rotated, and at least the surface of the battery pack package opposite to the side facing the back surface of the thin casing An information terminal device that is configured to directly touch outside air.

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