JPH0876882A - Portable terminal equipment - Google Patents

Abstract

PURPOSE: To obtain an inexpensive portable terminal equipment with a simple structure, where the enlargement of the size is prevented, by illuminating an operating part through the use of a light source which illuminates a display part. CONSTITUTION: A backlight system is constituted in such a way that light from a fluorescent lamp 9 is guided from the upper end edge of a light guide plate 7 to inside the light guide plate 7, light is reflected by a reflection plate 8 from its rear part and a liquid crystal panel 6 is illuminated. Then, the reflection plate 10 with a prescribed reflection angle is arranged diagonally upward and in parallel with the fluorescent lamp 9 and also a condenser lens 12 is arranged at position being opposite to the fluorescent lamp across the reflection plate 10 in the notch window 11 of the upper part of the display part 3. By the configuration, a part of light of the fluorescent lamp 9 is reflected by the reflection plate 10 and collected in a whole keyboard 4 from the upper part of the operating part 2 by the condenser lens 12 so as to illuminate the keyboard 4 so that the keyboard 4 is operated even in a dark place. Here, the condenser lens 12 is constituted so as to collect light in length L in the back and forth direction of the keyboard 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal device such as a word processor and a personal computer, and more particularly to an illumination structure for illuminating a keyboard of an operation section.

[0002]

2. Description of the Related Art Generally, a portable terminal device of this type is operated by operating a plurality of keyboards having kana characters, alphabets or symbols attached to their heads, and selecting and pressing the keyboards. A liquid crystal display panel for displaying contents is provided, and an illumination mechanism for illuminating the display panel from the back side of the display panel is provided.

[0003]

However, in the above-mentioned conventional portable terminal device, the display panel is provided with the illumination mechanism, but the operation unit is not provided with the illumination mechanism, and therefore there is no illumination. In the dark, since the keyboard cannot be operated, there is an inconvenience that the portable terminal device cannot be used after all. In order to eliminate this inconvenience, some keyboards have a light emitting device inside, but in that case, the keyboard is made of a translucent member or the light emitting device is arranged corresponding to each keyboard. Since it has to be provided, the structure is complicated, and since it has to be arranged on the entire keyboard, it is large and expensive.

Therefore, the present invention has been made in view of the above-mentioned conventional inconveniences or problems, and an object thereof is to provide a portable terminal device which has a simple structure, is inexpensive, and prevents an increase in size. Especially.

[0005]

In order to achieve this object, a portable terminal device according to the present invention displays an operation section on which a keyboard is arranged and operation contents by operating this operation section. A display unit and a light source for illuminating the display unit are provided, and a part of the light from the light source is guided to the operation unit. Further, the portable terminal device according to the present invention, an operation unit in which a keyboard is arranged in a substantially horizontal shape, a display unit that stands substantially upright from the operation unit and displays the operation content on the screen by the operation of the operation unit, A light source that is disposed above the display unit and illuminates the display unit from the back surface of the display unit, and a reflector disposed near the light source; and light from the light source that is reflected by the reflector, A condensing lens for condensing light is provided on the operation unit. Further, in the portable terminal device according to the present invention, the light source is a fluorescent lamp, and the lengths of the fluorescent lamp, the reflector and the condenser lens in the longitudinal direction are larger than the width of the operation portion. is there.

[0006]

According to the present invention, the operation portion is illuminated by using the light source that illuminates the display portion. Further, according to the present invention, the light of the light source arranged above the operation unit is condensed on the operation unit by the condenser lens. Further, according to the present invention, the light having the width in the radial direction of the fluorescent lamp is condensed by the condensing lens over the entire vertical direction of the operating portion, and the light in the longitudinal direction of the fluorescent lamp causes the entire horizontal direction of the operating portion. Is irradiated.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall perspective view of a portable terminal device according to the present invention with a part thereof cut away. The portable terminal device, which is generally designated by reference numeral 1, includes an operation unit 2 and a display unit 3. Although not shown, the display unit 3 can be freely opened and closed with respect to the operation unit 2 by a conventionally known hinge mechanism. And when using,
The operation portion 2 having a horizontal shape is opened so as to stand substantially vertically.

On the operation unit 2, a large number of keyboards 4 having kana characters, alphabets or symbols (not shown) attached to their heads are arranged in a matrix, and the keyboards 4 can be selectively depressed. Thus, the converted characters and the like are displayed on the liquid crystal display panel 6 described later. The overall external dimensions of these keyboards 4 are W in width and L in length.
Has become.

Reference numeral 5 is a display window formed in a rectangular shape on the front surface of the display unit 3, and 6 is a display window 5 attached to the back surface of the display window 5.
LCD panel with an outline slightly larger than the outline of 7
Is a light guide plate provided on the back surface of the liquid crystal display panel 6 and having an upper end extended, and 8 is a light guide plate 7 provided on the back surface of the light guide plate 7.
Reference numeral 9 denotes a fluorescent plate as a light source arranged near the upper edge of the light guide plate 7 so as to be substantially parallel to the upper edge thereof.

In this way, the light from the fluorescent lamp 9 is guided from the upper edge of the light guide plate 7 into the light guide plate 7, and the liquid crystal panel 6 is reflected by the reflector 8 from the rear side thereof to illuminate the liquid crystal panel 6. The backlight system is configured.

Further, in the present invention, a reflecting plate 10 having a predetermined reflection angle is arranged diagonally above the fluorescent lamp 9 in parallel with the fluorescent lamp 9, and the fluorescent plate 9 is sandwiched by the reflecting plate 10. A condenser lens 12 is arranged in a notched window 11 in the upper part of the display unit 3 at a position on the opposite side.

With such a structure, a part of the light of the fluorescent lamp 9 is reflected by the reflection plate 10, and is condensed by the condenser lens 12 from above the operation portion 2 to the entire keyboard 4, and the keyboard 4 Since it is illuminated, the keyboard 4 can be operated even in a dark place.

Here, the condenser lens 11 is constructed so as to condense the light from the fluorescent lamp 9 on the keyboard 4 to a length L in the front-rear direction of the keyboard 4. Also,
The lengths of the fluorescent lamp 9, the reflector 10 and the condenser lens 12 in the longitudinal direction are formed to be longer than the width W of the keyboard 4, so that the entire width direction of the keyboard 4 is illuminated.

[0014]

As described above, according to the present invention, the operation section provided with the keyboard, the display section for displaying the operation contents on the screen by the operation of the operation section, and the light source for illuminating the display section Since a part of the light from the light source is guided to the operation section, it is not necessary to provide a new light source for illuminating the operation section as in the conventional case, and thus the cost is reduced.

Further, according to the present invention, an operating section in which a keyboard is arranged substantially horizontally, a display section which stands substantially upright from the operating section and displays operation contents on the screen by operating the operating section, A reflector provided above the display and illuminating the display from the back of the display, the reflector disposed near the light source, and the light from the light source reflected by the reflector is operated as described above. Since the condensing lens for condensing the light is provided on the part, the operation part can be illuminated from above the operation part, so that the structure is simplified.

Further, according to the present invention, the light source is a fluorescent lamp, and the fluorescent lamp, the reflecting plate and the condenser lens have a length in the longitudinal direction larger than the width of the operating portion. Despite the configuration, it is possible to reliably illuminate the entire operation unit.

[Brief description of drawings]

FIG. 1 is an overall perspective view in which a part of a portable terminal device according to the present invention is cut away.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Portable terminal device, 2 ... Operation part, 3 ... Display part, 4 ... Keyboard, 6 ... Liquid crystal panel, 7 ... Light guide plate, 9 ... Fluorescent lamp, 10 ... Reflector plate, 12 ... Condensing lens.

Claims (3)

[Claims] 1. A portable terminal device comprising: an operation unit having a keyboard, a display unit for displaying operation contents on a screen by operating the operation unit; and a light source for illuminating the display unit. A portable terminal device, wherein a part of light from a light source is guided to the operation unit. 2. An operating section in which a keyboard is arranged substantially horizontally, a display section which stands substantially upright from the operating section and displays operation contents on a screen by operating the operating section, and an operating section arranged above the display section. In a portable terminal device provided with a light source that illuminates the display unit from the back of the display unit, a reflector disposed in the vicinity of the light source, and the light from the light source reflected by the reflector is operated by the operation. A portable terminal device, wherein a condensing lens for condensing light is provided on the part. 3. The portable terminal device according to claim 2, wherein the light source is a fluorescent lamp, and the fluorescent lamp, the reflector and the condenser lens have a length in a longitudinal direction that is larger than a width of the operation portion. A portable terminal device characterized by being large.