JPH0727722Y2 - Illumination device for dial operation buttons of cordless telephones - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a cordless telephone, and particularly to a dial operation button lighting device for illuminating a dial operation button provided in a handset (hereinafter, a handset) of the cordless telephone. Regarding

(B) Conventional technology A cordless telephone is composed of a master unit connected to a telephone line and a slave unit having a transmission / reception section and operating buttons such as dial operation buttons. Connect with
By using a child device, basic operations such as making, receiving, and calling can be performed as a telephone. The cordless telephone slave unit is provided with, for example, an opening surface of the transmitter and an opening surface of the receiver protruding from the front cabinet, and the transmitter between the transmitter and the receiver of the front cabinet is provided. A button for operation such as a dial operation button is installed on the concave surface that is lower than the opening surface of the earpiece and the earpiece, and the cordless handset is charged near the center of the side surface facing the concave surface of the earpiece. In order to set and charge the battery in a battery charger, there is a device provided with a locking hole that engages with a locking claw provided in the battery charger. As a technology related to such a cordless telephone, for example, there is a technology described in Japanese Utility Model Laid-Open No. 59-81147.

(C) Problems to be solved by the invention In the cordless telephone set described above, the master unit needs to be always installed in a fixed position, but the slave unit can be freely carried and is wirelessly connected to the master unit. Calling is performed from anywhere within the range in response to the user's operation, and the other party of the desired telephone line terminal and the user are allowed to make a call through the cordless handset. In a dark place where the dial operation button of is not visible to the user,
In general, the dial operation button cannot be operated, and the handset cannot be operated. Therefore, it is conceivable to provide a lighting device so that the dial operation button can be seen even in a dark place. However, it is not easy to install the lighting device on the surface cabinet of the slave device in terms of space. There is a problem in that cost is increased when a method of providing an illuminating device inside the dial operation button and illuminating the dial operation button itself is used.

The present invention provides a dial operation button illuminating device for a cordless telephone that can illuminate the dial operation button by providing an illuminating device at a position to solve such a problem.

(D) Means for Solving the Problems A dial operation button lighting device of a cordless telephone according to the present invention is a board provided with a connection terminal of a dial operation button in a slave unit, a light emitting diode connected to the board, and the light emission. It is composed of a light guide body which guides the light emitted by the diode and emitting the light to a locking hole which is provided in the receiver section or the transmitter section of the slave unit and is engaged with the locking claw of the charging stand.

(E) Operation The dial operation button lighting device of the cordless telephone of the present invention has a light emitting diode provided on a substrate provided with contact terminals of the dial operation button, and guides the light emitted from the light emitting diode through the light guide body, and has a locking hole. I tried to illuminate the dial operation button more.

(F) Embodiment An embodiment of the dial operation button lighting device of the cordless telephone of the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway side view showing an embodiment of a cordless telephone with a dial operation button lighting device according to the present invention, and FIG. 2 is an enlarged view of a main part of FIG. 1, FIG. (A) and (b) are views showing a light guide used in this embodiment. (A) is a side view, (b) is a front view, and FIG. 4 is (b) of FIG. A-A 'sectional view at
FIG. 5 is a circuit diagram showing a lighting operation control circuit for controlling a lighting operation of a light emitting diode according to an embodiment of the present invention. (1) is the cordless telephone handset unit, (2) is the handset unit of the handset unit (1), (3) is the transmitter unit of the handset unit (1),
(4) is the transmitter (3) of the receiver (2) for engaging the locking claw provided in the charger when the slave unit (1) is set in the charger (not shown). Locking hole provided in the central portion of the side surface facing to, and (5) is the receiving section (2) and the transmitting section (3).
The concave surface between and is provided with operation buttons such as a dial operation button (6) and a hook switch (7) on the concave surface (5). Reference numeral (8) is a board provided in contact with the back surface of the concave surface (5) in the slave unit (1), and the contact terminal of the dial operation button (6) and the hook switch (7) are provided on the board (8). The contact terminals, etc. are wired. (9) is a light emitting diode connected and installed on the substrate (8), (10)
Is the locking hole (4) for the light emitted by the light emitting diode (9).
In the present embodiment, a light guide body that guides up to is a transparent light guide material having a shape in which L-shaped corner portions are obliquely cut as shown in FIGS. 3 and 4, and is obliquely cut. The light is refracted at the part. Further, in the present embodiment, in order to further enhance the light collecting property of the light emitting diode (9), the light guide body (10)
The concave portion (11) having an arc shape corresponding to the circular arc of the tip of the light emitting diode (9) so that the tip of the light emitting diode (9) fits on the surface facing the tip of the light emitting diode (9). Is formed. Therefore, the amount of light guided to the locking hole (4) is increased, and the range of spread of the light emitted from the locking hole (4) is expanded. Next, in the lighting operation control circuit shown in FIG. 5, (12) is a dial circuit which transmits a dial signal in response to the operation of the dial operation button (6), (13)
Is activated by a timer circuit that is activated in response to the closing of the interlocking switch (14) interlocking with the hook switch (7), and is in a state of continuously outputting an output signal for about 10 seconds. Every time a dial signal from the dial circuit (12) is applied within 10 seconds, the dial signal is reset and the output signal is continuously output again for 10 seconds. Reference numeral (15) is a switch circuit which is turned on when receiving an output signal from the timer circuit (13) and turns on the light emitting diode (9).

As described above, the dial operation button lighting device of the cordless telephone of the present invention is configured. Next, the illumination operation for the dial operation button of the dial operation button lighting device will be described. First, the hook switch (7) is closed to bring the slave unit (1) into a callable state. By this operation, the interlocking switch (14) is also closed, the timer circuit (13) is activated, and the output signal is output for about 10 seconds. The switch circuit (15) is turned on by the output signal, and the light emitting diode (9) provided on the substrate (8) inside the slave unit (1) is turned on. As a result, the light emitting diode (9) is turned on, and the light emitted from the light guide body (10) strikes the sloped surface of the arcuate recess (11), and the light refracted by the sloped surface enters the locking hole (4). It is guided through the inside of the light guide (10). The light guided to the locking hole (4) by this is the concave surface (5) of the slave unit (1) from the locking hole (4).
The dial operation button (6), etc. provided on the touch panel is struck and the dial operation button (6) is illuminated. As a result, the dial operation button (6) can be seen even in a dark place. In such a state, before the timer circuit (13) counts about 10 seconds, the dial operation button (6) illuminated by the light from the light emitting diode (9) from the locking hole (4) is operated, When a dial signal is sent from the dial circuit (12) to a desired partner, the timer circuit (13) is reset each time the dial signal of the dial circuit (12) is received, and the output signal is again output for about 10 seconds. Will be in the state of issuing. for that reason,
While the dial operation button (6) is being operated, the dial operation button (6) is continuously illuminated by the light from the light emitting diode (9) through the locking hole (4), and the last number dialed for the desired telephone number. When the operation button (6) is operated,
Since the timer circuit (13) does not receive the dial signal by the dial operation later, it resets after sending the output signal for about 10 seconds, it becomes inactive, and the switch circuit (15) turns off, so it emits light. The diode (9) is turned off, does not emit light, and the dial operation button (6)
Etc. will not be illuminated. Further, in the present embodiment, the interlock switch (1
4) is also opened and the timer circuit (13) is reset to make it inoperative. As described above, the dial operation button (1) on the concave surface (5) of the slave unit (1) can be illuminated without any change on the surface of the slave unit (1). The light emitting diode (9) used in this example.
The circuit for turning on is not limited to the one having the circuit configuration, and even if a circuit having another configuration is used, no problem occurs. Further, in the present embodiment, the description has been given of the case where the receiving portion is provided with the locking hole, but the same operation can be performed even when the transmitting portion is provided with the locking hole.

(G) Effect of the Invention The dial operation button lighting device of the present invention has the light emitting diode mounted and fixed on the substrate provided inside the slave unit body and on which the contact terminals of the dial operation button are arranged.
The light emitted from the light emitting diode is guided to the locking hole by the light guide, and the dial operation button is illuminated by the light emitted from the locking hole, so that the dial operation can be performed even in a dark place. It is very convenient.

In addition, since the light from the light emitting diode is guided to the locking hole by the light guide, there is no restriction on the mounting position of the light emitting diode. It has a great effect and its practical value is very high.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of a cordless telephone handset equipped with a dial operation button lighting device of the cordless telephone of the present invention, and FIG. 2 is an enlarged view of a main part of FIG.
3 (a) and 3 (b) are views showing a light guide used in one embodiment of the present invention. FIG. 3 (a) is a side view, FIG. 3 (b) is a front view, and FIG. FIG. 5B is a sectional view taken along the line AA 'in FIG. 5B, and FIG. 5 is a circuit diagram showing a lighting operation control circuit for controlling the lighting operation of the light emitting diode in one embodiment of the present invention. Description of main drawing numbers (1) …… Slave unit, (4) …… Locking hole, (6) …… Dial operation button, (8) …… Board, (9) …… Light emitting diode, (10) ...... Light guide.

Claims (1)

[Scope of utility model registration request] 1. A locking claw provided with a transmitter section and a receiver section, a dial operation button arranged on a concave surface between the transmitter section and the receiver section, and provided on a charging stand. A main body of the cordless handset having a locking hole that engages with the center portion of a surface of the voice receiver or the voice transmitter facing the dial operation button, and the dial main body and the dial. A substrate on which a contact terminal of an operation button is arranged and a light emitting diode is attached and fixed, and a light guide provided inside the main body of the slave unit and for guiding light emitted from the light emitting diode to the locking hole. The dial operation button illumination device of the cordless telephone is characterized in that the dial operation button is illuminated by the light from the light emitting diode which is guided by the light guide body and emitted from the locking hole.