JPH08125730A - Illumination lighting device for keyboard part in portable radio equipment - Google Patents

Abstract

PURPOSE: To obtain illumination lighting device of a keyboard part for performing lighting without performing an operation to a push button under simple constitution for which a timer for automatic turning off is not necessarily required. CONSTITUTION: A switching circuit for opening and closing a power feeding circuit for an illuminating lamp 6 provided inside a portable radio equipment such as a telephone set or the like is provided and both terminals 9 of the switching circuit are provided in an exposed state on the grasping part of the main body of the portable radio equipment. By grasping the portable radio equipment, a part between both terminals 9 is closed with a human body as a contact piece and the switching circuit is operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illumination and lighting device for a keyboard portion of a portable wireless device such as a mobile phone or a handy terminal.

[0002]

2. Description of the Related Art When a light is provided so that a keyboard of a mobile phone can be operated in a dark place, a light source is provided inside a translucent push button to turn on the light. Alternatively, a light source that indirectly illuminates the surroundings of the push button is provided to light it, and in use, after it is turned on by pressing one of the many push buttons, it is turned on. In many cases, a specific push button for clearing is pressed and then a telephone number is dialed, and as for turning off the light, the timer is automatically turned off after a certain period of time after the final operation on the push button.

[0003]

In the above-mentioned prior art, when used in a dark place, it is necessary not only to push any push button for lighting, but also to push the push button when lighting before dialing. The operation is complicated, for example, it is necessary to operate a specific push button for clearing in order to clear the push button, and there is a disadvantage that a timer must be provided for turning off the light.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an illumination lighting device for a keyboard portion, which has a simple structure and is turned on without operating a push button, and does not necessarily require a timer for automatically turning off. To provide.

[0005]

According to the present invention, a switch circuit for opening and closing a power supply circuit for an illumination lamp provided in a portable wireless device such as a telephone is provided, and both terminals of this switch circuit are gripped by a main body of the portable wireless device. It is characterized in that it is provided in an exposed state on the part, and by grasping the portable wireless device, the human body is used as a contact piece to make a circuit between the two terminals to operate the switch circuit.

[0006]

[Function] By grasping the body of the portable wireless device by hand,
The two terminals of the switch circuit are electrically connected with each other through a hand, the switch circuit is activated, the lighting lamp power supply circuit is closed, and the lighting is turned on. After use, the main body of the mobile wireless device is released from the hand so that the terminals of the switch circuit are insulated and the lights are automatically turned off.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated embodiment in which the illumination lighting device of the present invention is applied to the keyboard portion of a mobile phone will be described in detail below.

As a portable telephone equipped with the illumination lighting device of the present invention, for example, as shown in FIG. 1, an LCD display 2 is provided near the upper end of a grip type main body 1 suitable for grasping a flat and substantially rectangular shape, and A keyboard part 4 having push buttons 3 and 3 for functions and dials is provided over most of the above, and a semitransparent panel 5 is attached to the surface of the keyboard part 4 excluding the push buttons 3 and 3. Illumination lamps 6 and 6 such as LEDs are provided at a plurality of places inside the panel 5,
With the switch circuit 7 provided inside the main body 1, the illumination lamp 6,
The type in which the power supply circuit 8 for 6 is opened and closed is adopted.

As a special structure of the present invention for the above structure type, terminals 9, 9 are provided in the vicinity of both side edges of the grip portion of the main body 1, and the terminals 9, 9 are used as contacts of the switch circuit 7, By grasping the main body 1 during use, the terminals 9 and 9 are electrically connected by the palm and the switch circuit 7
And the power supply circuit 8 is activated by the operation of the switch circuit 7.
And the lighting lamps 6 and 6 are turned on.

When turning off the light, the main body 1 is opened from the hand, the terminals 9 are insulated from each other, the power supply circuit 8 is opened, and the illumination lamps 6 are turned off. Note that a timer may be attached so as to automatically turn off the light when a certain time has elapsed since the light was turned on.

In the switch circuit 7, for example, as shown in FIG. 2, a transistor 10 is used to connect both terminals 9 and 9 to the emitter side of the switch circuit 7 and an illumination lamp 6 to the collector side.
6 may be connected to the power supply circuit 8.

As the installation structure of the illumination lamps 6 and 6, semitransparent push buttons 3 and 3 are adopted as shown in FIG.
Illumination lamps 6 and 6 such as LEDs may be provided inside or inside each push button 3, and both the terminals 9 and
With respect to No. 9, it is also possible to provide not only the both side edges of the grip portion in the main body 1 but also the side edges on one side in an adjacent state with an appropriate interval.

In the above embodiment, the illumination lighting device is applied to the keyboard portion of the portable telephone, but it goes without saying that the present invention may be applied to the keyboard portion of the handy terminal.

[0014]

As described above, according to the present invention, a power supply circuit for the illuminating lamp and a switch circuit for opening and closing the power supplying circuit are provided inside the grip-type main body having the keyboard portion with the illuminating light. In contrast to the type of portable wireless device provided, a pair of terminals serving as contact points of the switch circuit are provided in an exposed state in the grip portion of the main body, which allows the portable wireless device to be used without using the push button. You can operate the switch circuit to turn on the light by just performing the normal operation of grasping the main body with your hands, and after using it, simply release the main body of the portable wireless device from your hand without any special operation. The configuration and operation are extremely simple, such as automatically turning off the light.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a portable wireless device including an illumination lighting device for a keyboard unit of the present invention.

FIG. 2 is an electrical block diagram of an illumination lighting device.

FIG. 3 is a perspective view of a portable wireless device including an illumination lighting device according to another embodiment of the present invention.

[Explanation of symbols]

 1 Main body 4 Keyboard part 6 Illumination lamp 7 Switch circuit 8 Feed circuit 9 terminal

Claims (1)

[Claims] 1. A keyboard portion (4) with an illumination lamp (6)
A portable wireless device of a type in which a power supply circuit (8) for the illuminating lamp (6) and a switch circuit (7) for opening and closing the power supply circuit (8) are provided inside a grip type body (1) 2. An illumination lighting device for a keyboard portion in a portable wireless device, characterized in that terminals (9), (9) as contacts of a switch circuit (7) are provided in an exposed state on a grip portion of the main body (1).