JP2004347474A - Mobile navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile navigation system of ultra small and light weight capable of keeping in a palm and excellent in operability. <P>SOLUTION: This mobile navigation system is provided with a display panel 2 of a deformed circular shape such as a circular, oval, or elliptic shape arranged on the substrate 1 of a shape similar to the shape of the display panel 2; a GPS antenna part 3 and circuit parts are arranged on the same surface as the display panel 2 of the substrate 1 are arranged in segmental domains formed by expanding the end parts of the display panel 2 toward the end parts of the substrate 1 while keeping an outer curvature similarly, wherein each circuit part is arranged in the each segmental domain. Between the surface and rear surface of the substrate 1 are connected with connectors provided oppositely on both the faces at the edges of the substrate 1. The substrate 1 etc., provided with the circuit parts etc., is housed in a cabinet constituted of a front cabinet having a transparent window similar to the display panel 2 and a rear cabinet fitting to the front cabinet. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a portable navigation device, and more particularly, to a portable navigation device that can be used as an electronic compass and a simple navigator using Global Positioning Systems (GPS) and local information.
[0002]
[Prior art]
Navigation devices include a so-called car navigation device that is mounted on a car and displays a destination and the current position of the car. Such a car navigation device is used for purposes other than a car, for example, during walking. It is convenient if possible.
In order to be able to use the device while walking, a portable navigation device is required, and techniques such as Patent Literature 1 and Patent Literature 2 have been proposed.
[0003]
The technology of the “electronic compass” of Patent Document 1 is an electronic compass using GPS, which has a geomagnetism sensor that measures geomagnetism and detects a vector direction of a magnetic field, and has a 360 ° angle using an LCD, EL, or LED element. Is divided into 24 parts, a circular display unit for teaching an arbitrary direction is provided, the position data of the current position is detected by a GPS or the like, and the power is turned on or the key of the start SW is pressed once. The direction of the mecca is automatically displayed on the display unit.
[0004]
Further, the technology of “portable GPS receiving device, navigation device and navigation system” of Patent Document 2 discloses a portable type having a storage medium that is portable by a user and has a small data storage capacity, such as a wristwatch type GPS receiving device. In a GPS receiving apparatus, a navigation apparatus having a data storage capacity larger than that of the storage medium, such as an on-vehicle navigation apparatus and the like, is used in a vehicle. A navigation information acquiring unit for acquiring any one of tourist information, shop information, walk information, and other navigation information and storing the data in the storage medium.
With this configuration, the portable GPS receiver can be used effectively even when navigation information around the place actually performed by the vehicle is not input to the portable GPS receiver in advance.
[0005]
[Patent Document 1]
JP 2001-272234 A [Patent Document 2]
JP 2002-22478 A
[Problems to be solved by the invention]
As described above, an electronic compass and a wristwatch-type navigation device having a circular display section have been proposed as a portable small and lightweight navigation device. It is necessary to propose a more advanced mounting method in accordance with a high resolution of a liquid crystal panel as a display panel and a technology of package mounting on a glass substrate.
[0007]
The present invention has been made in consideration of the above-described circumstances, and has as its object to provide a portable navigation device that is ultra-small, lightweight, and easy to use that fits in the palm of a hand.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention is configured as follows.
The portable navigation device according to the present invention is configured such that a liquid crystal panel, which is a display panel having a deformed circular shape such as a circular shape, an egg shape, and an elliptical shape, is formed on a substrate similar to the shape of the display panel, and the display panel of the substrate is formed. The GPS antenna and the circuit unit which are arranged on the same surface and are formed so as to extend radially from the end of the display panel toward the end of the substrate in a manner similar to the outer curvature of the display panel. In the area, it is arranged for each of the circuit units.
[0009]
When a solar cell is used as a driving power source, the solar cell is arranged on the same surface as the display panel arranged on the substrate.
[0010]
Further, as the display panel, a reflective liquid crystal panel may be used, or a transmissive liquid crystal panel may be used by providing a backlight device facing an end surface of the substrate.
[0011]
Further, a connection portion for connecting the front and back surfaces of the substrate is provided at the substrate end portion so as to face the front and back surfaces, and the connector for holding the substrate end portion along the shape of the substrate end portion is provided on the front and back surfaces. Connect the connection section. In this connector, a conductive pattern is formed inside a metal cover having a spring property.
[0012]
Further, the cabinet of the portable navigation device in which the circuit board on which the circuit unit is arranged is housed is a front cabinet having a transparent window having a shape similar to the shape of the display panel, and a rear cabinet fitted to the front cabinet. It consists of.
In addition, this configuration includes a back cabinet that is provided on the back of the bottom cabinet and has an input unit, a card holder, and the like facing the bottom cabinet, and (1) a member formed on the bottom cabinet. The rear cabinet can be freely pivoted by engaging a stop hole with a pivot shaft provided in the rear cabinet. (2) The rear cabinet can be engaged with a locking groove formed in the bottom cabinet and the rear cabinet. The rear cabinet may be freely slidable by engaging the provided slide shaft.
[0013]
With the above configuration, it has a round liquid crystal display that images a compass magnet, and on a glass substrate on which a liquid crystal panel is formed, a GPS antenna, a solar cell, and circuits necessary for driving and controlling them are densely mounted. Accordingly, the portable navigation device is ultra-small and lightweight enough to fit in the palm of the hand.
Also, by providing the operation buttons in a rear cabinet that can be rotated and slid, the portable navigation device becomes easy to use.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of a portable navigation device according to the present invention will be described with reference to the drawings.
[0015]
(A) Configuration of Portable Navigation Device FIG. 1 is a block diagram showing a functional configuration of a portable navigation device according to the present invention. In the figure, in the portable navigation device of the present embodiment, a GPS radio wave is received by a GPS antenna unit 3, and a GPS receiver unit 4 acquires longitude and latitude information of a current position. Further, a memory card 7 in which predetermined area information including longitude and latitude information of a reference point, a list of major buildings, shops, venues, and the like, and location information are recorded is stored in a card R / W (read / write) unit ( Card holder) 10.
[0016]
The card R / W unit 10 is capable of both reading and writing information.
The map information processing unit 25 collates the current position information from the GPS receiver unit 4 with the map information in the memory card 7, performs a process of associating the map information with the current position information, and sends the result to the CPU 23.
[0017]
The movement information processing unit 24 has a clock unit, calculates the traveling direction and the walking distance of the user from the direction sensor 9 and the speed sensor 11 and sends the calculated direction to the CPU 23.
The character memory 21 stores display characters and characters such as warning characters and arrows.
The memory 22 stores information from the memory card 7, user's action history, and the like.
[0018]
The video signal and the liquid crystal drive signal from the CPU 23 are output to the liquid crystal driver section 5, and the liquid crystal panel (display panel) 2 is driven by the liquid crystal driver section 5 to display a video.
A plurality of operation buttons are prepared in the input unit 6, and the setting of the destination and the selection of the display method are performed based on the information from the input unit 6.
As the driving power source, a card battery 8a, a solar battery 12, or the like is used.
In this embodiment, a circular liquid crystal panel is used. However, the shape of the liquid crystal panel is not limited to this, and for example, a liquid crystal panel having a deformed circular shape such as an egg shape or an elliptical shape may be used.
[0019]
(B) First Embodiment A first embodiment of the present invention will be described with reference to FIGS.
FIG. 2 is a plan view of the front surface of the display substrate, FIG. 3 is a plan view of the back surface of the display substrate, and FIG. 4 is a side sectional view of the portable navigation device.
[0020]
The liquid crystal panel 2 is formed in a circular shape at the center on the surface of the circular glass substrate 1, and the GPS antenna unit 3, the GPS receiver unit 4, and the liquid crystal driver unit 5 are similarly formed adjacent to the liquid crystal panel 2. It is located on the surface.
The GPS antenna unit 3, the GPS receiver unit 4, and the liquid crystal driver unit 5 are provided for each circuit block (circuit unit) from the edge of the liquid crystal panel 2 to the edge of the glass substrate 1 in a manner similar to the external curvature of the edge of the liquid crystal panel 2. (In the case where the shape of the liquid crystal panel is circular, concentric fan-shaped regions) are arranged at high density.
[0021]
A functional circuit 100 (map information processing unit 25, CPU 23, movement information processing unit 24, character memory 21, memory 22) is arranged on the back surface of the glass substrate 1, and a function SW (switch) for turning on / off the power and selecting a function. 6b, a toggle button 6a also having a push function for setting a destination and switching a display, a battery storage section 8, an orientation sensor 9, a card R / W section 10, and a speed sensor 11 are mounted.
[0022]
In the present embodiment, circuits such as a TFT (Thin Film Transistor) used for the CPU 23, the liquid crystal driver unit 5, and the liquid crystal panel 2 disposed on the glass substrate 1 are formed of crystalline silicon. This crystalline silicon includes, for example, continuous grain silicon (CGS) (CG silicon) (for example, see JP-A-7-161634 and JP-A-2002-124468) and other polycrystalline silicon. Using crystalline silicon technology.
[0023]
By using such crystalline silicon, a high-speed and high-density LSI (large-scale integrated circuit) or the like that can be formed only on single-crystal silicon until now can be formed directly on a glass substrate.
[0024]
The cabinet that houses the display substrate includes a circular light-transmitting screen 13 provided in a similar shape facing the liquid crystal panel 2, a front cabinet 14 that holds the light-transmitting screen 13, and a rear cabinet that fits with the front cabinet 14. A card insertion slot 14a is provided on the side surface of the front cabinet 14 so as to face the card R / W unit 10.
[0025]
An example of use of the portable navigation device according to the first embodiment will be described with reference to plan views of FIGS. 5 and 6, assuming that a user goes to an event hall in a certain town whose detailed location is unknown.
The user goes to a transit destination town by a train or the like. Then, for example, at the event corner at the station, the user borrows the memory card 7 recording the map information of the town.
The user inserts the borrowed memory card 7 into the card R / W section 10 of the portable navigation device, and turns on the power using the function SW 6b.
The map information processing unit 25 processes the current position information from the GPS receiver unit 4 and the map information from the card R / W unit 10, and sends the current position information to the CPU 23 with the current position information superimposed on the map.
The CPU 23 reads out the marker character and a message such as “Please set the destination” from the character memory 21 and displays them on the liquid crystal panel 2 as video signals.
[0026]
The user turns the toggle button 6a to scroll the main venue name, and presses the toggle button 6a at the target venue name to set the destination 2b. With this operation, a map in which the destination 2b is marked is displayed on the liquid crystal panel 2 as shown in FIG.
When the user starts to walk toward the destination 2b, the portable navigation device sequentially updates the current position 2d with information from the GPS antenna unit 3 and displays the current position 2d together with the trajectory 2c.
Further, the CPU 23 extracts a marker character (for example, a character indicating a store (not shown)) from the character memory 21 each time necessary and displays the marker character on the liquid crystal panel 2.
[0027]
Actually, it is difficult to sequentially obtain high-accuracy information corresponding to human walking because of the accuracy of GPS measurement. The information from the direction sensor 9 and the speed sensor 11 is processed by the movement information processing unit 24, A method of obtaining information on the moving distance and traveling direction of the user and displaying the information on the liquid crystal panel 2 is adopted. Note that it is also possible to perform display correction by collating with GPS information for each predetermined moving distance.
When the toggle button 6a is pressed once in the state of the map information display, the display method can be switched to the arrow display. For example, an arrow 2e as shown in FIG. 6 is displayed. FIG. 6 shows the direction from the current position to the destination, and the direction of the arrow moves each time the user moves (moves or rotates the portable navigation device).
[0028]
As a display method of the arrow 2e, it is possible to indicate the selection of the road on which the user walks or the traveling direction on the road, instead of the direction of the destination. Data such as direction and intersection information may be input in advance.
[0029]
In addition, the following various settings are possible for the direction display.
(1) The upper part of the portable navigation device is always set to the “north” direction.
(2) The direction above the portable navigation device is always the destination direction.
(3) The trajectory to the destination is displayed by a broken line or the like, and the direction above the portable navigation device is always the traveling direction.
[0030]
Further, the memory 22 sequentially updates and records the display contents on the liquid crystal panel 2. If the memory card 7 is removed and another memory card 7 is loaded after storing the map information, for example, The trajectory at the time of reaching a certain halfway point or destination can also be recorded via the card R / W unit 10.
[0031]
(C) Second Embodiment A second embodiment of the present invention will be described with reference to FIGS. In FIGS. 7 and 8, portions having the same functions as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof is omitted.
FIG. 7 is a plan view of the front surface of the display substrate, and FIG. 8 is a plan view of the rear surface of the display substrate.
The liquid crystal panel 2 is formed in a circular shape at the center on the surface of the circular glass substrate 1. The GPS receiver unit 4, the liquid crystal driver unit 5, and the solar cell 12 are adjacent to the liquid crystal panel 2, and the liquid crystal panel 2 is connected to the GPS receiver unit 4. An adjacent GPS antenna unit 3 is similarly arranged on the surface of the glass substrate 1.
[0032]
The GPS antenna unit 3, the GPS receiver unit 4, the liquid crystal driver unit 5, and the solar cell 12 are formed so as to extend radially from the end of the liquid crystal panel 2 toward the end of the glass substrate 1 for each circuit unit. (If the shape of the liquid crystal panel is circular, it is a concentric fan-shaped region.)
A function circuit 100 (map information processing unit 25, CPU 23, movement information processing unit 24, character memory 21, memory 22) is arranged on the back surface of the glass substrate 1, and a function SW 6b for turning on / off the power and selecting a function is provided. A toggle button 6a also having a push function for setting the ground and switching the display, an azimuth sensor 9, a card R / W unit 10, and a speed sensor 11 are mounted.
[0033]
In the present embodiment, circuits such as a CPU 23, a liquid crystal driver unit 5, a TFT (Thin Film Transistor) and a solar cell used for the liquid crystal panel 2 disposed on the glass substrate 1 are similar to those in the first embodiment described above. It is formed of crystalline silicon.
In order to manufacture a solar cell using CG silicon, for example, the solar cell is manufactured by the manufacturing method disclosed in Japanese Patent Application Laid-Open Nos. 9-82997 and 8-340127.
The method of using the portable navigation device in the present embodiment is the same as in the first embodiment described above.
[0034]
(D) Third Embodiment A third embodiment of the present invention will be described with reference to FIGS. In FIGS. 9 and 10, parts having the same functions as those in the above-described first or second embodiment are denoted by the same reference numerals, and description thereof will be omitted.
FIG. 9 is a plan view of the portable navigation device when the input unit 6 is pulled out at the time of user setting, and FIG. 10 is a side sectional view of the portable navigation device.
The cabinet that houses the display substrate includes a circular light-transmitting screen 13 provided in a similar shape to the liquid crystal panel 2, a front cabinet 16 that holds the light-transmitting screen 13, and a bottom cabinet that fits with the front cabinet 16. A rear cabinet 18 provided with the input unit 6 and the card R / W unit 10 is rotatably provided on the rear surface. The front cabinet 16 and the rear cabinet 18 have the same circular shape.
[0035]
The rear cabinet 18 is provided with a rotating shaft 18a. The rotating shaft 18a is engaged with a rotating hole 17a provided in the bottom cabinet 17 to rotate in the direction A (see FIG. 9), so that the rear cabinet 18 can be taken in and out. It is.
At the time of normal use, the rear cabinet 18 is stored and used, and when using a special function such as setting of a destination or enlargement / reduction of a map, the rear cabinet 18 is extended and used.
The rear cabinet 18 has, as the input unit 6, a power switch 6c, a menu switch 6d for selecting various functions, a cross key 6e for moving a cursor to a destination on a map, and a function setting button 6f.
The method of using the portable navigation device in the present embodiment is the same as in the first embodiment described above.
[0036]
(E) Fourth Embodiment A fourth embodiment of the present invention will be described with reference to FIGS. In FIGS. 9 and 11, parts having the same functions as those of the above-described first, second, or third embodiment are denoted by the same reference numerals, and description thereof will be omitted.
FIG. 11 is a side sectional view of the portable navigation device.
The cabinet that houses the display substrate includes a circular light-transmitting screen 13 provided in a similar shape to the liquid crystal panel 2, a front cabinet 16 that holds the light-transmitting screen 13, and a bottom cabinet that fits with the front cabinet 16. 26, a rear cabinet 19 provided with the input unit 6 and the card R / W unit 10 is slidably provided on the rear surface. The front cabinet 16 and the rear cabinet 19 have the same circular shape.
[0037]
The rear cabinet 19 is provided with a slide shaft 19a. The slide shaft 19a is engaged with a slide groove 26a provided in the bottom cabinet 26 and slides in the direction B (see FIG. 9) so that the rear cabinet 19 can be taken in and out.
At the time of normal use, the rear cabinet 19 is stored and used, and when a special function such as setting of a destination or enlargement / reduction of a map is used, the rear cabinet 19 is pulled out and used.
The rear cabinet 19 is provided with, as the input unit 6, a power switch 6c, a menu SW 6d for selecting various functions, a cross key 6e for moving a cursor to a destination on a map, and a function setting button 6f.
The method of using the portable navigation device in the present embodiment is the same as in the first embodiment described above.
[0038]
(F) Circuit Connection The connection between the buttons provided on the rear cabinets 18 and 19 of the portable navigation device described in FIGS. 10 and 11 and the circuit on the glass substrate 1 is, for example, adjacent to the rotation hole 17a. This is performed by providing an elliptical hole to allow the connection wire to pass through, or by providing a hole for passing the connection wire near the slide groove 26a.
[0039]
In addition, the connection between the front and back surfaces of the glass substrate 1 in each of the above-described embodiments can be performed by providing a through hole in the glass substrate 1 and arranging a conductive pattern, or by connecting each circuit disposed on the glass substrate 1. A method of providing the connection portion on the front and back surfaces at the end of the circular glass substrate 1 and performing wire bonding connection between the front and back surfaces is conceivable, but a method using a shorting connector (connector) is also possible. This will be described with reference to FIG.
[0040]
12A and 12B show a shorting connector, FIG. 12A is a front view, FIG. 12B is a cross-sectional view, and FIG. 12C is a side view.
The connection parts on the front and back of each circuit arranged on the glass substrate 1 are provided at the end of the circular glass substrate 1, and three shorting connectors 30 are fitted to the end of the circular glass substrate 1. As a result, the front and back surfaces of the glass substrate 1 are connected.
The shorting connector 30 has a shape along the shape of the end of the circular glass substrate 1, and has a metal part 30a having a spring property and a plurality of conductive patterns 30b disposed inside the metal part 30a. By being fitted to the end of the glass substrate 1, the end of the shorting connector 30 is pressed by a spring and connected between the connecting portions arranged opposite to the front and back surfaces.
[0041]
FIG. 13 shows a case where the shorting connector 30 is used. FIG. 13 (A) is a plan view of the surface of the circular glass substrate 1, and FIG. 13 (B) is a side sectional view of the portable navigation device.
Three shorting connectors 30 are fitted to the ends of the circular glass substrate 1 to connect the front and back surfaces of the glass substrate 1.
[0042]
In the present embodiment, three shorting connectors 30 have been described. However, the length and number of connectors are determined by the size of the glass substrate 1, the arrangement of the connection portions on the front and back surfaces, the mounted components on the glass substrate 1, workability, and the like. Are appropriately set according to the situation described above, and are not limited to only the above description.
[0043]
(G) Types of Liquid Crystal Panels There are two types of liquid crystal panels: a transmission type liquid crystal panel and a reflection type liquid crystal panel. In the above embodiments, the reflection type liquid crystal panel using external light has been described.
[0044]
Here, an embodiment in which the liquid crystal panel of each of the above-described embodiments is a transmissive liquid crystal panel will be described.
14A and 14B show an example in which a backlight using a white LED (Light Emitting Diode) is used. FIG. 14A is a side view of the backlight, and FIG. It is a top view.
The backlight 31 includes an LED holder 31a and a white LED 31b, and is fitted with a spring property to the end of the glass substrate 1 in the same manner as the method of attaching the shorting connector 30.
[0045]
By fitting an LED holder 31a into the end of the glass substrate 1 and making a wiring connection such as a power supply wiring (not shown), the white LED 31b is arranged to face the end surface of the glass substrate 1 and the backlight 31 is turned on. White light input from one end is transmitted through the glass substrate 1 and illuminates the transmissive liquid crystal panel 32 from the back, thereby displaying an image.
Further, the wiring pattern and connection for driving the white LED 31b can be provided inside the LED holder 31a similarly to the shorting connector 30 described above.
[0046]
(H) Shape of Portable Navigation Apparatus In each of the above embodiments, the portable navigation apparatus was described as having a circular shape. However, instead of a circular shape, a shape such as an egg or an elliptical shape may be used. A compact and lightweight portable navigation device can be realized by density mounting.
[0047]
It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various changes and modifications can be made without departing from the gist of the present invention.
[0048]
【The invention's effect】
As described above, according to the present invention, a GPS antenna, a solar cell, and circuits necessary for driving and controlling them are provided on a glass substrate on which a liquid crystal panel is formed. The high-density mounting makes the portable navigation device ultra-small and light enough to fit in the palm of the hand.
Also, by providing the operation buttons in a rear cabinet that can be rotated and slid, the portable navigation device becomes easy to use.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a functional configuration of a portable navigation device according to the present invention.
FIG. 2 is a plan view of a display substrate surface of the portable navigation device according to the first embodiment.
FIG. 3 is a plan view of a back surface of a display substrate of the portable navigation device according to the first embodiment.
FIG. 4 is a side sectional view of the portable navigation device according to the first embodiment.
FIG. 5 is an explanatory diagram of a usage example of the portable navigation device.
FIG. 6 is an explanatory diagram of another usage example of the portable navigation device.
FIG. 7 is a plan view of a display substrate surface of a portable navigation device according to a second embodiment.
FIG. 8 is a plan view of the back surface of the display substrate of the portable navigation device according to the second embodiment.
FIG. 9 is an explanatory view when the rear cabinet is rotated or slid and pulled out.
FIG. 10 is a side sectional view of a portable navigation device according to a third embodiment.
FIG. 11 is a side sectional view of a portable navigation device according to a fourth embodiment.
FIG. 12 is an explanatory diagram of a shorting connector for connecting circuits and the like arranged on the front and back surfaces of a glass substrate.
FIG. 13 is an explanatory diagram when circuits and the like arranged on the front and back of a glass substrate are connected using a shorting connector.
FIG. 14 is an explanatory diagram when a white LED and the LED are fitted in a portable navigation device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Glass substrate, 2 ... Liquid crystal panel (display panel), 2b ... Destination, 2c ... Trace, 2d ... Current position, 2e ... Arrow, 3 ... GPS antenna part, 4 ... GPS receiver part, 5 ... Liquid crystal driver part, 6 Input unit, 6a Toggle button, 6b Function SW, 6c Power switch, 6d Menu SW, 6e Cross key, 6f Function setting button, 7 Memory card, 8 Battery storage unit, 8a Card Battery, 9 orientation sensor, 10 card R / W section, 11 speed sensor, 12 solar cell, 13 light transmissive screen, 14, 16 front cabinet, 14a card insertion slot, 15, 18, 19 ... Rear cabinet, 17, 26 bottom cabinet, 17a rotating hole, 18a rotating shaft, 19a sliding axis, 21 character memory, 22 memory, 23 CPU, 24 movement Information processing unit, 25: map information processing unit, 26a: slide groove, 30: shorting connector (connector), 30a: metal part, 30b: conductive pattern, 31: backlight, 31a: LED holder, 31b: white LED, 32 ... Transmissive liquid crystal panel, 100 ... Functional circuit.

Claims (10)

A portable navigation device, wherein a circular display panel is formed on a substrate similar to the shape of the display panel, and a GPS antenna is arranged on the same surface of the substrate on which the display panel is arranged. The portable navigation device according to claim 1, wherein a solar cell is arranged on the same surface of the substrate on which the display panel is arranged. 3. The portable navigation device according to claim 1, wherein a circuit portion disposed on a surface of the substrate on which the display panel is arranged is configured such that a circuit portion is formed from an end of the display panel in a manner similar to an external curvature of the display panel. 4. A portable navigation device, wherein each of the circuit units is arranged in an area formed to extend radially toward an end of a substrate. The portable navigation device according to any one of claims 1 to 3, wherein the display panel is a reflective liquid crystal panel. 4. The portable navigation device according to claim 1, wherein the display panel uses a transmissive liquid crystal panel, and a backlight device is provided to face an end surface of the substrate. apparatus. The portable navigation device according to any one of claims 1 to 5, wherein a connection portion that connects between the front and back surfaces of the substrate is provided at an end portion of the board so as to face the front and back surfaces, and connects the end portion of the board to the substrate. A portable navigation device wherein the connection portions on the front and back surfaces are connected by a connector held along the shape of a substrate end. 7. The portable navigation device according to claim 6, wherein the connector has a conductive pattern formed inside a metal cover having a spring property. The portable navigation device according to any one of claims 1 to 7, comprising: a front cabinet having a transparent window having a shape similar to the shape of the display panel; and a rear cabinet fitted to the front cabinet. A portable navigation device having a cabinet for storing a substrate on which a circuit unit is arranged. The portable navigation device according to any one of claims 1 to 7, comprising: a front cabinet having a transparent window having a shape similar to the shape of the display panel; and a bottom cabinet fitted to the front cabinet. A cabinet that houses the board on which the circuit portion is arranged, and a rear cabinet that is arranged on the back of the bottom cabinet, wherein a locking hole formed in the bottom cabinet and a rotating shaft provided in the rear cabinet are provided. The portable navigation device, wherein the rear cabinet is rotatably provided by being engaged. The portable navigation device according to any one of claims 1 to 7, comprising: a front cabinet having a transparent window having a shape similar to the shape of the display panel; and a bottom cabinet fitted to the front cabinet. A cabinet that houses the circuit board on which the circuit unit is arranged; and a back cabinet that is arranged on the back of the bottom cabinet. A locking groove formed in the bottom cabinet is engaged with a slide shaft provided on the back cabinet. A portable navigation device characterized in that the rear cabinet is slidably provided.

Images