JPS6181038A - Telephone device - Google Patents

Abstract

PURPOSE:To improve the operability in a dark place by providing an illuminat ing device in a handset where functions are integrated, and a hand set is remov able from a case and lighting the illuminating device automatically to illuminate operation switches such as push buttons or the like if the handset is detached from a casing in the dark. CONSTITUTION:A handset 13 incorporates an off-hook detecting circuit 54, a lightness detecting circuit 62, a controller 63, and an illuminating device 64. When the handset 13 is detached from the casing, a terminal 65 is open, and a potential V1 becomes OV, and an output V2 goes to the high level. Meanwhile, a photoelectric element 621 is provided near push buttons 133 on the back of the handset 13, and its output V3 is lowered according as it is darker around the handset; and when the output V3 is lower than a reference potential V4, an output V5 of a comparator 631 goes to the high level. Consequently, if the handset 13 is detached from the casing and the lightness around it is lower than a prescribed value, and output V6 of a NAND gate 632 goes to the low level, and the illuminating device 64 is driven to illuminate operation switches such as push buttons 133 or the like, and the call operation is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a telephone device, and particularly to a telephone device having a handset with an operation panel such as a button for calling a called party.

[Background Art] In recent years, with the development of mobile telephone communication networks, there has been an increasing demand for installing telephone devices in mobile bodies such as automobiles. However, conventional telephone devices installed in automobiles and the like are the same as normal home appliances, and do not take into account the special characteristics of mobile objects.

For example, in a car, the interior lights must be turned on every time a dial is operated at night. Turning on the interior lights while driving is not only inconvenient, but also
There is a risk that rearward visibility may be reduced.

[Problems to be Solved by the Invention] The present invention has been made to improve the above-mentioned conventional drawbacks, and aims to improve the operability of a telephone device.

[Means for Solving the Problems] The present invention includes at least a microphone that converts the voice of a caller into an electrical signal, a speaker that converts a received signal into voice, and a device for rejecting the called party and conducting a telephone conversation. A telephone device comprising a handset having an operation switch and a housing housing the handset, the handset comprising: an off-hook detection circuit for detecting that the handset has been removed from the housing; a brightness detection circuit that detects the brightness of the surroundings in which the control switch is used; a lighting device that illuminates the operation switch group; signals from the off-hook detection circuit and the brightness detection circuit are input; A control device for driving a lighting device.

The telephone device of the present invention is not particularly limited in its use. That is, it can be used for home use, and for mobile objects such as automobiles, ships, and aircraft. The telephone device of the present invention is a telephone device in which a handset is provided with a group of operation switches, such as a pushbutton and a dial, particularly for calling a called name. This handset is
In addition to being connected to the main body of the telephone device by wire, it may be connected electrically wirelessly. Also, if it is used as a portable telephone device, it may have a built-in transmitter/receiver body. The lighting device used in the handset can be a light bulb, a light emitting diode, an electroluminescent plate, or the like. Further, a photoconductive element such as a photodiode or CdS can be used as a sensor for detecting ambient brightness.

The housing typically houses the handset. For example, it may have only the function of mechanically fixing the handset, or it may have a mechanical fixing device, a station, or some or all of the electrical devices necessary for communication with the handset. The location where the casing is provided is arbitrary. Particularly when the present invention is used as a car telephone device, the casing can also be used as a steering wheel pad.

[Operation] To make a call, the handset is removed from the housing,
When the ambient brightness is not sufficient, the lighting device automatically illuminates the operating switches of the handset. Therefore, even in a dark place, it is possible to easily call the called party.

[Example] Hereinafter, the present invention will be explained in detail based on specific examples.

This embodiment describes the present invention, particularly for mobile phone equipment for automobiles! It was applied to The housing that holds the handset is the pad of the steering wheel. Communication is carried out wirelessly using FM waves between a mobile device, which transmits and receives data between a wireless base station and a car, and a handset.

FIG. 1 is a perspective view showing the configuration of the apparatus of this embodiment.

The steering wheel 10 includes a ring 11 and a pad 12.
It consists of The handset 13 is placed on the pad 12.
R are freely arranged. The handset 13 releases the pad 12 by operating the eject switch 121.
It can be removed from the FIGS. 2 and 3 are a rear perspective view and a front perspective view showing the configuration of the handset 13, respectively. The handset 13 has a microphone 131, a speaker 132 for close calls, a pushbutton 133 for calling a called party, a talk switch 134 for controlling calls, and a hook switch 135 on the front thereof. In addition, on the front of the handset 13, there are a sound collection port 136 of a microphone 131 for amplified calls, a speaker 137 for amplification, a tuning switch 138 for selecting a pre-stored called party number, and a selected station. A display 139 is provided for displaying the abbreviated number of the caller.

In the telephone device of this embodiment, when the handset 13 is attached to the pad 12, the driver can make a loudspeaker call so that he can operate the telephone even while driving, and the called party can also be called by operating the channel selection switch 138. fT [Nyorujun] Has a function that allows you to easily make calls through primary access. Furthermore, when the handset 13 is removed from the pad 12, it is possible to make a close call using the pushbutton 133 or the channel selection switch 138, just like a normal telephone.

FIG. 4 shows the configuration of a telephone device installed in the bud 12 and handset 13. Further, FIG. 5 shows the configuration of a relay device provided on the heavy body side. Electrical control within handset 13 is performed by CPtJ32. C.P.
A button 133 (numeric keypad), a channel selection switch 138, a hook switch 135, and a talk switch 134 are connected to U32, and the control input from these operation switches is processed by the CPU 32. , is frequency modulated by the modulator 7A device 42 and sent to the FM stereo transmitter 36.

In the close talk state, the audio signal is input from the microphone 131 by the microphone switching circuit 44 and sent to the FM stereo transmitter 36 via the amplifier 46. The control signal is divided into a right channel and the audio signal is divided into a left channel, and these FM waves are transmitted from the FM stereo transmitter 36 and received by the FM stereo receiver 1178 on the relay device side.

On the other hand, the FM waves transmitted from the FM stereo transmitter 76 on the relay device side are received by the Flyl stereo receiver 34. The audio signal is outputted via the speaker switching circuit 38 to the speaker 132 in the case of a close call, and to the speaker 137 via the amplifier 40 in the case of a loudspeaker call.

When the handset 13 is attached to the bud 12, these devices in the handset are powered from the vehicle battery via a constant voltage circuit 58 provided in the bud 12. On the other hand, the in-vehicle battery charges a rechargeable battery 60 in the handset 13 via a charging circuit 56 provided in the bud 12. Handset 13 is bad 12
When the off-bad detection circuit 54 operates, the power supply switching circuit 52 operates via the CPU 32, and the power supply is switched to the rechargeable battery 60.

A constant voltage circuit 53 generates various voltages from the voltages supplied by both types of sources.

The relay device includes a mobile device interface 72 connected to the mobile device main body 9o, a CPU 70, an SFM stereo transmitter 76,
It has an FM stereo receiver l1i 78, a modem 74, an audio switch 80, and the like. Among the signals received by the FM stereo receiver 78, the audio signal is sent to the audio switch 8.
The signal is input to the audio signal input terminal of the mobile device main body 90 via the terminal o.

Meanwhile, the received control signal is encoded by the variable 11vA device 74 and input to the CPU 70, and after signal processing is input to the control input terminal of the mobile device main body 90 via the mobile condyle interface 72.

FIG. 6 is an electrical circuit diagram showing the characteristic parts of the device of this embodiment. The off-pad detection circuit 54 is configured with a transistor Tr1 and receives a voltage v1 supplied by the on-vehicle battery 61.
By detecting , removal of the handset 13 can be detected. That is, when the handset 13 is attached to the pad 12, a constant voltage is applied to the terminal 65, and therefore the collector potential 2 of the conductor Tri is at a low level. On the other hand, when the handset 13 is removed from the pad 12, the terminal 65 becomes an oven and the M position V1 becomes Ov. Therefore, the output v2 becomes high level.

On the other hand, the brightness detection circuit 62 consists of a resistor R1 and a CdS photoelectron 621. The photoelectric element 621 is connected to the handset 1
3, near the bushing button 133, detects the brightness of the surrounding area, and its output (3) decreases as the surrounding area becomes darker.

The control device 63 includes a comparator 631 and a NAND gate 6
It consists of 32. When the output 3 of the brightness detection circuit 62 becomes lower than the reference potential 4, that is, when the surrounding brightness becomes darker than a predetermined brightness, the output V5 of the comparator 631 becomes a high level. Since the NAND gate 632 receives the outputs V2 and 5, its output v6 becomes low level only when both are at high level. When V6 goes low, current flows through the light emitting diode 641 of the lighting device 64, causing it to emit light. Therefore, when the handset 13 is removed from the pad 12 and the surrounding brightness is lower than a predetermined value, the illumination device 64 is activated to illuminate the operation switches such as the button 133, making it easier to operate the call. Become.

FIGS. 7 and 8 are a perspective view and a sectional view showing the configuration of the bushing button 133 incorporating the illumination device 64. The button 133 includes a transparent plastic substrate 642 containing a light emitting diode 641, a transparent electrode 646 consisting of a pair of transparent conductive films provided below each character, and a gap between the transparent electrodes 646. It consists of a spacer 643 that maintains a constant value, a character printing plate 644 disposed on the upper surface of the spacer 643, and a transparent plastic sheet 645 covering the upper surface.

The button 1 is activated by the action of the light emitting diode 641.
It is possible to brighten the entire surface of 33.

In the above embodiment, the illumination device 64 is □, the push button 1-
Although the light is radiated from the back of the button 133, it is also possible to provide only the illumination 'JA' in a place other than the button and in close proximity to illuminate the operation switch group.

[Effects of the Invention] The present invention provides a lighting device in a handset with integrated functions, and when the handset is removed from the housing and the surroundings are dark, the lighting device is automatically turned on and an operation switch such as a button is activated. illuminate. Therefore, when the user removes the handset and makes a call in a dark place, there is no need to turn on the external lighting every time, and the operability of the telephone device is improved.

[Brief explanation of the drawing]

FIG. 1 is a mechanical diagram showing the configuration of a telephone device according to a specific embodiment of the present invention, and FIGS. 2 and 3 are perspective views showing the structure of a handset of the device. Figures 4 and 5
The figure is a block diagram showing the configuration of the electrical system of the device. FIG. 6 is an electric circuit diagram showing the characteristic parts of the device, and FIGS. 7 and 8 are a perspective view and a sectional view showing the structure of a button having an illumination device. 133... Bush button 641... Light emitting diode 621... Photoelectric element 644... Character printing board 6
46... Transparent electrode 643... Spanner patent applicant Toyoda Gosei Co., Ltd. Aisin Seisatsu Co., Ltd. Agent Patent attorney Hirodo Okawa Patent attorney Shudo Fujitani Patent attorney Akio Maruyama

Claims (2)

[Claims] (1) At least a microphone that converts the voice of the caller into an electrical signal, and a speaker that converts the received signal into voice;
A telephone device comprising a handset having a group of operation switches for selecting a called party and making a call, and a housing housing the handset, wherein the handset is removed from the housing. an off-hook detection circuit that detects that the handset is used; a brightness detection circuit that detects the brightness of the surroundings in which the handset is used; a lighting device that illuminates the operation switch group; and signals from the off-hook detection circuit and the brightness detection circuit. 1. A telephone device comprising: a control device that inputs a signal and drives the lighting device according to the signal. (2) The telephone device according to claim 1, wherein the housing is a pad of a steering wheel of an automobile.