JP2004118069A - Mobile equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce size and weight of mobile equipment capable of magnifying the display of a display part. <P>SOLUTION: This invention is characterized in that when a projection lens 4 is mounted and a reversal indication output means 7 outputs an reversal indication to a display control means 8, the display control means 8 displays a picture displayed in the display part 3 vertically and horizontally inverted. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mobile device having a display unit such as a mobile phone or a PDA.
[0002]
[Prior art]
In recent years, mobile devices such as mobile phones and PDAs have become widespread, and a display unit made of, for example, a liquid crystal display panel is attached to these mobile devices. Since the mobile device itself is small, the size of the display unit is small, and it is desired to increase the screen display of the mobile device.
[0003]
Therefore, it has been proposed to provide a mobile device with a small screen to enlarge the screen display (see Patent Document 1). Specifically, a liquid crystal display panel, an imaging optical system, and a screen are arranged in the casing of the mobile device so that the screen displayed on the liquid crystal display panel is enlarged and displayed on the screen by the imaging optical system. It has become.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-295690
[Problems to be solved by the invention]
However, in order to display the image of the liquid crystal plate on the screen in Patent Document 1, it is necessary to form the image of the liquid crystal plate on the screen using an optical lens or the like. For this reason, a considerable optical path length from the liquid crystal plate to the screen is required in the mobile device, and there is a problem that miniaturization of the mobile device is hindered. In addition, when the screen is enlarged in order to enlarge an image, there is a problem that the mobile device itself is enlarged. On the other hand, since the mobile device has a structure having a screen, there is a problem that there is a limit to the enlarged display of an image.
[0006]
Accordingly, an object of the present invention is to provide a mobile device capable of reducing the size and weight of the device while enabling an enlarged display of a display unit.
[0007]
[Means for Solving the Problems]
The mobile device of the present invention is a mobile device in which a display unit is provided in a casing, and is capable of projecting and displaying an enlarged screen by mounting a projection lens on the display unit, and the display content of the display unit An inversion instruction output means for outputting an inversion instruction for inverting the display, and a display control means for receiving the inversion instruction output from the inversion instruction output means and causing the display content of the display unit to be inverted vertically and horizontally for display. It is characterized by having.
[0008]
Here, the “display content displayed on the display unit” includes characters, figures, symbols, or combinations thereof.
[0009]
The “inversion instruction output unit” may be a button that can be manually operated by the user, or a lens detection unit that detects that the projection lens is mounted on the display unit and outputs an inversion instruction. It may be.
[0010]
Note that the “display control means” may be one that controls to increase the brightness of the display unit when the inversion instruction is output by the inversion instruction output means.
[0011]
Further, the “housing” may have a lens housing portion that houses the projection lens. Furthermore, a lens holding unit for holding the projection lens on the display unit may be provided in the housing.
[0012]
【The invention's effect】
According to the mobile device of the present invention, when the inversion instruction is received from the inversion instruction output unit, the display control unit is configured to invert the display content displayed on the display unit vertically and horizontally, so that the projection lens is used. The image on the display unit can be projected in the correct orientation even when it is in the screen, so it is possible to enlarge and display the display unit in the correct orientation by attaching a projection lens on the display unit. Compared to a case where an optical system is built in, the size and weight can be reduced.
[0013]
In addition, since the display unit can be enlarged and displayed using a projection lens, the enlargement magnification can be greatly increased as compared with a conventional case where a mobile device is provided with a screen for enlarged display.
[0014]
If the inversion instruction output means is constituted by lens detection means for detecting that the projection lens is mounted on the display unit and outputting the inversion instruction, the inversion display is automatically detected by detecting the mounting of the projection lens. As a result, the user-friendliness can be improved.
[0015]
Further, by increasing the brightness of the display unit when receiving the inversion instruction from the inversion instruction output unit, it is possible to make the projected display on the display unit easier to see.
[0016]
Also, by providing the lens housing portion for housing the projection lens in the housing, the projection lens can be carried along with the mobile device, so that user convenience can be improved.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 are diagrams showing a preferred embodiment of the mobile device of the present invention. 1 and 2 are perspective views showing the mobile device 1, FIG. 3 is a top view showing the mobile device, and FIG. 4 is a side view showing the mobile device.
[0018]
A mobile device 1 in FIG. 1 is a portable electronic device such as a mobile phone or a PDA, and has a structure in which a display unit 3 is provided in a housing 2. In general, the user performs an operation while viewing characters or the like displayed on the display unit 3 or views an image.
[0019]
On the other hand, for example, when the display unit 3 is enlarged when viewed by a plurality of people, the user removes the projection lens 4 from the housing 2 and attaches the projection lens 4 to the display unit 3 as shown in FIG. . Then, the user can see the enlarged screen with the display unit 3 facing the desk, wall, paper, or the like.
[0020]
The projection lens 4 is normally housed in a concave lens housing portion 5 provided on the back surface 2a of the housing 2, and is mounted on the display portion 3 during use. Here, as shown in FIG. 3, the projection lens 4 has a sandwiching portion 4 b that sandwiches the housing 2 on both side surfaces 4 a and 4 a, and a groove for inserting the sandwiching portion 4 b in the side surface 2 b of the housing 2. 2c is formed. When the projection lens 4 is not used, the clamping portion 4 b is inserted into the groove 2 c and the projection lens 4 is held by the housing 2. Similarly, when the projection lens 4 is disposed on the display unit 3, the clamping unit 4 b is inserted into the groove 2 c and the projection lens 4 is held by the housing 2. That is, the groove 2c functions as a lens holding unit that holds the projection lens 4 in a state of being mounted on the display unit 3.
[0021]
In addition, although the case where the projection lens 4 has the clamping part 4b and the housing | casing 2 has the groove | channel 2c is illustrated as a structure which hold | maintains the projection lens 4 on the display part 3 and the lens accommodating part 5, the housing | casing 2 is shown. Can be held by various other techniques such as holding the projection lens 4 by sandwiching the outer peripheral side of the projection lens 4.
[0022]
Here, the projection lens 4 is composed of an aspheric lens that magnifies and displays the light incident from the display unit 3 side. Then, as shown in the top view of FIG. 3, the projection lens 4 displays an enlarged display in a state where the contents of the display unit 3 are horizontally reversed. Similarly, as shown in the side view of FIG. 4, the projection lens 4 enlarges and displays the contents of the display unit 3 in a vertically inverted state. Therefore, the display on the display unit 3 and the enlarged display are in an inverted state, and when displayed by a display method that looks normal when the display unit 3 is directly viewed, the display is enlarged in an inverted state. The
[0023]
Therefore, in order to display a screen in a normal orientation even when enlarged by the projection lens 4, inversion instruction output means 7 for outputting an inversion instruction for inverting the display content of the display unit 3 to the mobile device 1. The display control means 8 is provided to display the display content of the display unit 3 by being inverted vertically and horizontally when the inversion instruction is output from the inversion instruction output means 7.
[0024]
Specifically, the inversion instruction output means 7 in FIG. 4 is composed of lens detection means including switches arranged around the display section 3 of the housing 2 (see FIG. 3), and the projection lens 4 is on the display section 3. When the projection lens 4 is attached, the switch is pushed (ON state), and when the projection lens 4 is removed, the switch returns (OFF state). Then, the inversion instruction output means 7 outputs an inversion instruction signal to the display control means 8 when it is in the ON state. On the other hand, the inversion instruction output means 7 does not output an inversion instruction signal to the display control means 8 when it is in the OFF state.
[0025]
The display control unit 8 has a function of displaying the display of the display unit 3 symmetrically in the vertical and horizontal directions when an inversion instruction signal is sent from the inversion instruction output unit 7. Then, the top, bottom, left and right of the screen projected by the projection lens 4 are correctly displayed. As described above, when the projection lens 4 is not mounted on the display unit 3, a normal screen display is displayed on the display unit 3, and when the projection lens 4 is mounted on the display unit 3, the screen is inverted vertically and horizontally. Can be displayed. Therefore, an imaging optical system and a screen for enlarging and displaying in the casing of the mobile device are not required as in the prior art, and the mobile device can be reduced in size and weight.
[0026]
Further, it is possible to selectively use a case where a normal screen by the display unit 3 is used and a case where an enlarged display is performed by the projection lens 4 instead of always performing the enlarged display on one mobile device 1. Furthermore, the use of the projection lens 4 enables a greatly enlarged display as compared with the conventional case, so that the user-friendly mobile device 1 can be provided.
[0027]
Further, the display control means 8 has a function of increasing the brightness of the display unit 3 when an inversion instruction signal is sent from the inversion instruction output means 7. Here, the display unit 3 includes a liquid crystal display panel 3a and a backlight 3b (see FIG. 3). Then, the display control means 8 increases the light intensity emitted from the display unit 3 by increasing the brightness of the backlight 3b. Thereby, since the light of the image projected by the projection lens 4 can be enlarged, it is possible to make the enlarged screen easy to see.
[0028]
According to the embodiment of the present invention, when the inversion instruction is received from the inversion instruction output unit 7, the display control unit 8 is configured to display the display content displayed on the display unit 3 by being inverted up and down and left and right. Even when the projection lens 4 is used, the image on the display unit 3 can be projected in the correct direction. Therefore, the projection lens 4 can be mounted on the display unit 3 so that the display unit 3 can be enlarged and displayed in the correct direction. Thus, the size and weight can be reduced as compared with the case where the screen 2 and the imaging optical system are built in the housing 2.
[0029]
Further, since the enlarged display on the display unit 3 can be performed using the projection lens 4, the enlargement magnification can be greatly increased as compared with the conventional case where the mobile device 1 is provided with a screen for enlarged display. it can.
[0030]
When the reversal instruction output means 7 is constituted by lens detection means for detecting that the projection lens 4 is mounted on the display unit 3 and outputting a reversal instruction, the mounting of the projection lens 4 is automatically detected. Therefore, the usability of the user can be improved.
[0031]
Further, by increasing the brightness of the display unit 3 when receiving the inversion instruction from the inversion instruction output unit 7, it is possible to make the projected display on the display unit 3 easier to see.
[0032]
Further, by providing the lens housing portion 5 for housing the projection lens 4 in the housing 2, the projection lens 4 can be carried along with the mobile device 1, so that user convenience can be improved.
[0033]
The embodiment of the present invention is not limited to the above embodiment. For example, in FIGS. 1 and 2, a lens housing portion 5 for housing the projection lens 4 is formed in the housing 2, but without the lens housing portion 5 in the housing 2, it is separate from the mobile device 1. The user may have the projection lens 4 and attach the projection lens 4 on the display unit 3 as necessary, thereby reducing the weight of the mobile device 1 itself.
[0034]
Further, in the above embodiment, the display control means 8 is pressed by the projection lens 4 so that the inversion instruction output means 7 formed of a switch is pressed, so that the display on the display unit 3 is vertically and horizontally symmetrical. Thus, the display unit 3 may have a function of making it vertically and horizontally symmetrical. In addition, the brightness of the display unit 3 may be set by a user operating a button.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a preferred embodiment of the mobile device of the present invention. FIG. 2 is a perspective view showing a preferred embodiment of the mobile device of the present invention. Schematic diagram of the mobile device as viewed from the top [Fig. 4] Schematic diagram of the mobile device as viewed from the side when the projection lens is attached to the display unit [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Mobile device 2 Housing | casing 3 Display part 4 Projection lens 5 Lens accommodating part 7 Inversion instruction | indication output means 8 Display control means

Claims (4)

In mobile devices that have a display on the housing,
By mounting a projection lens on the display unit, the screen can be projected and enlarged,
An inversion instruction output means for outputting an inversion instruction for inverting the display content of the display unit;
A mobile device comprising display control means for receiving a reversal instruction output from the reversal instruction output means and reversing the display content of the display unit vertically and horizontally. The mobile device according to claim 1, wherein the inversion instruction output unit is a lens detection unit that detects that the projection lens is mounted on the display unit and outputs an inversion instruction. 3. The display control unit according to claim 1, wherein the display control unit controls the display unit to increase brightness when an inversion instruction is output by the inversion instruction output unit. Mobile devices. The mobile device according to claim 1, wherein the housing includes a lens housing portion that houses the projection lens.

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