JPH11275201A - Illuminator for portable radio telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily illuminate a display or buttons with a lamp even at a dark place by operating a switch means by pulling out or pressing in an antenna, and turning on lamps for illuminating the display and buttons with a lighting control circuit. SOLUTION: This device is provided with a switch means 24 to be operated by pressing an antenna 13 with the top of a finger or the like and a lighting control circuit 25 for controlling the lighting of lamps 22 and 23 with the power of a battery 12 by operating the switch means 24. In an illuminator 14, when a pressure more than a fixed level is applied to the antenna 13 with the top of a finger for originating a telephone call in the case of a standby state by pressing a power source button, for example, the switch means 24 detects that operation and is turned on. In this way, the lighting control circuit 25 turns on lamps 22 for display and lamps 23 for buttons for fixed time with power supplied from the battery 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device for illuminating a display and buttons of a portable radio telephone with a built-in lamp.

[0002]

2. Description of the Related Art In recent years, portable wireless telephones have become increasingly lighter and smaller, and operability has been improved. In this type of portable radio telephone, when a predetermined dial button is pressed to make a call when the power button is pressed and a standby state is set, a lamp for illuminating the liquid crystal display and buttons is turned on for a fixed short time. The buttons can be operated while looking at the display on the liquid crystal display. Thus, the mobile wireless telephone can be used even in a dark place at night.

[0003]

However, in a conventional portable radio telephone, for example, when used in a dark place at night, pressing one of the buttons illuminates the liquid crystal display or the buttons. All lamps can be operated by turning them on for a certain period of time. For example, when pressing a dial button other than the power button or clear / reset button, volume adjustment, menu selection button, mode switching or set button, Since the operation corresponding to the pressing is performed and displayed on the liquid crystal display, the operation has to be performed after clearing the operation. This is because, when using the mobile wireless telephone in a dark place such as at night, the user operates by fumbling and cannot determine which button is used.

[0004] The present invention has been made in view of the above circumstances,
It is an object of the present invention to provide a lighting device for a portable radio telephone, which can easily illuminate a display or buttons with a lamp even in a dark place, and can eliminate a problem that must be cleared by pressing an incorrect button.

[0005]

In order to achieve the above object, a lighting device for a portable radio telephone according to the present invention is provided with switch means that is activated by pulling out or pressing an antenna of the portable radio telephone, and by operating the switch means. A lighting control circuit for lighting lamps for illuminating the display and the buttons, and a battery for supplying power to the respective units are provided. By activating the switch means by pulling out or pressing the antenna, the lighting control circuit turns on the lamps that illuminate the display and the buttons, so that it is easy to groping the antenna even in dark places and press the wrong button This eliminates the problem that must be cleared.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the drawings. FIG. 1 is a block diagram illustrating a configuration of a lighting device of a portable wireless telephone according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating an operation state of the portable wireless telephone according to the embodiment of the present invention.

[0007] In these drawings, a portable radio telephone 10 of the present embodiment has a main body 11 formed in a slightly vertically long box shape having a size convenient for carrying, and a front side of which is provided with various operation buttons and a liquid crystal display. The operation side provided is a battery 1 of lithium ion or nickel hydride on the back side.
2, a fixed antenna 13 protrudes slightly to the right of the upper end, and a lighting device 14 for lighting lamps is built in the main body 11.

On the front side of the main body 11, a liquid crystal display 15 is arranged at a slightly upper part thereof, and at a lower part thereof, a power / end button 16, a start button 17, a volume adjustment and menu selection button 18, a mode / set button 19 , A dial button 20, a clear button 21 and the like, and a display lamp 22 and a button lamp 2 near the display 15 and the buttons, respectively.
3 is built-in. In FIG. 2, reference numeral 26 denotes a receiver, and reference numeral 27 denotes a microphone.

The illuminating device 14 includes switch means 24 which is operated by pressing the antenna 13 with a fingertip or the like,
The lighting control circuit 2 that controls the lighting of the lamps 22 and 23 by the operation of the switch means 24 by the power of the battery 12.
5 is provided. The switch means 24 can use, for example, a pressure sensor that detects a pressing force when the fixed antenna 13 is pressed with a fingertip, and is turned on by a pressing force equal to or more than a certain value. The lighting control circuit 25
This is a circuit that supplies power from the battery 12 and turns on the display lamps 22 and the button lamps 23 for a certain period of time, for example, about 10 seconds by turning on the switch means 24.

In the lighting device for a portable radio telephone having the above-described configuration, when the power button 16 is pressed and the mobile phone is in a standby state, for example, when making a telephone call, the antenna 13 is pressed by a fingertip with a predetermined pressure or more. The lighting control circuit 25 turns on the display lamps 22 and the button lamps 23 for a certain period of time by the power supplied from the battery 12 by detecting the pressing force. Thus, for example, buttons can be easily operated while viewing the liquid crystal display 15 even in a dark place at night. Also, in a dark place, even if you groping, antenna 1
It is easy to know the existence of 3 and it is possible to eliminate the problem that the user has to clear by pressing an incorrect button as in the related art.

In the above embodiment, a portable radio telephone equipped with a fixed antenna 13 has been described as an example.
It can also be used for a portable radio telephone equipped with a drawer-type antenna. In such a case, the switch means only needs to be turned on by pulling out the antenna.

[0012]

As described above, the lighting device for a portable radio telephone according to the present invention operates the switch means by pulling out or pressing the antenna, and the lighting control circuit turns on the lamps for illuminating the display and the buttons.
The antenna can be easily operated by groping even in a dark place, and the problem that must be cleared by pressing the wrong button can be eliminated.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a lighting device of a portable wireless telephone according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an operation state of the portable wireless telephone according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Mobile radiotelephone 11 Main body 12 Battery 13 Antenna 14 Lighting device 15 Display 16 Power / end button 17 Start button 18 Volume adjustment / menu selection button 19 Mode / set button 20 Dial button 21 Clear button 22 Display lamps 23 Lamp for button Class 24 switch means 25 lighting control circuit 26 receiver 27 microphone

Claims (1)

[Claims] 1. A switch which operates by pulling out or pressing an antenna of a portable radio telephone, a lighting control circuit which turns on lamps for illuminating a display and a button by operating the switch, and supplies power to the respective parts. A lighting device for a portable wireless telephone, comprising: a battery.