JPH04218795A - Alarm clock - Google Patents

Abstract

PURPOSE:To reduce switch components of an alarm clock. CONSTITUTION:This purpose is attained by providing an alarm set switch, an alarm time detecting means which generates an output when an alarm time comes, a manual control switch, an alarm device which is put in an alarm set state by the aforesaid alarm set switch and conducts an alarm operation when the output of the alarm time detecting means is generated, and a control circuit which conducts a snooze control of the aforesaid alarm device by an operation of the aforesaid control switch during the operation of the alarm device and makes the aforesaid alarm device conduct demonstration by the operation of the aforesaid control switch during a non-operation of the aforesaid alarm device.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm clock.

0002

[Prior Art] Some conventional alarm clocks with a snooze feature have an alarm demonstration function, but in this type of alarm clock, a snooze switch and a demonstration switch are used, respectively. It is set up independently. Its circuit configuration is, for example, as shown in FIG. The snooze switch and the demonstration switch are independent and each connected to a separate terminal of the IC circuit.

0003

[Problems to be Solved by the Invention] In the above-mentioned conventional alarm clock, the snooze and demonstration switches are independently connected to different terminals, which increases the cost and causes the alarm clock to timepieces become larger.

The present invention aims at reducing the number of switch parts in an alarm clock.

[0005]

[Means for Solving the Problems] The present invention provides an alarm set switch, an alarm time detection means that produces an output when the alarm time comes, a manual control switch, and an alarm set state using the alarm set switch. , and an alarm device that performs an alarm operation when the output of the alarm time detection means occurs, and a snooze control of the alarm device is performed by operating the control switch while the alarm device is operating, and the alarm device is deactivated. The above problem is solved by providing a control circuit that allows a demonstration of the alarm device to be performed by operating the control switch therein.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is an alarm set switch;
2 is an alarm time detection means, which in this example is a switch that is closed for a certain period of time from the alarm time. 3 is a control switch that opens and closes manually, 4 is an alarm signal output circuit, 5 is an alarm device that generates an alarm sound, 6 is a demonstration control circuit, 7 is a snooze control circuit, and 8 is a control switch for each game. - This is a control circuit consisting of two circuits.

Next, the operation will be explained. First, when at least one of the alarm set switch 1, the alarm time detection means 2, and the control switch 3 are open, both the terminals A and B are "L", and the terminal C, Since D and E also become "L", the alarm signal output circuit 4, demonstration control circuit 6, and snooze control circuit 7 do not operate.

Next, when the control switch 3 is closed with at least one of the alarm set switch 1 and the alarm time detection means 2 open, that is, with no alarm sounding, the terminal A becomes "L". , the terminal B becomes "H", and the terminal E becomes "H" through each gate circuit of the control circuit 8,
Since the terminals C and D become "L", the demonstration control circuit 6 operates, and the alarm signal for demonstration is output from the alarm signal output circuit 4.
An alarm sound is generated from the alarm device 5 and a demonstration is performed.

Next, when the alarm set switch 1 is closed, that is, in the alarm set state, when the alarm time comes, the alarm time detection means 2 is closed, and the control switch 3 is closed.
is open, terminal A is “H” and terminal B is “L”.
”, the terminal D becomes “H” and the terminals C and E become “L” through each gate circuit of the control circuit 8, so an alarm signal is output from the alarm signal output circuit 4 and an alarm sound is output from the alarm device 5. occurs.

Therefore, when the alarm set switch 1 and the alarm time detection means 2 are both closed, that is, when the alarm time has come and the alarm sound is generated,
When the control switch 3 is closed, both terminals A and B are “H”.
”, the terminal C becomes “H” and the terminals D and E become “L” through each gate circuit of the control circuit 8, so the snooze circuit 7 operates and the alarm signal is output from the alarm signal output circuit 4. is stopped for a predetermined period of time.

As described above, the snooze and demonstration operations can be selectively performed by operating the control switch 3.

[0012] In the above embodiment, the alarm time detection circuit 2 is used as an open/close switch, but the present invention is not limited to this, and means for digitally detecting the coincidence of the alarm time and the current time may be used.

[0013]

According to the present invention, in an alarm clock, one switch serves both as a snooze switch and a demonstration switch, so cost reduction and space saving can be achieved accordingly.

[Brief explanation of the drawing]

[Fig. 1] Block diagram showing one embodiment of the present invention

[Figure 2]
Block diagram showing conventional example

[Explanation of symbols]

1 Alarm set switch 2 Alarm time detection means 3 Control switch 5 Alarm device 8 Control circuit

Claims (1)

[Claims] 1. An alarm set switch, an alarm time detection means that produces an output when the alarm time is reached, a manual control switch, an alarm set state by the alarm set switch, and an output of the alarm time detection means. an alarm device that performs an alarm operation when an alarm occurs, a snooze control of the alarm device by operating the control switch while the alarm device is operating, and a snooze control of the alarm device by operating the control switch while the alarm device is not operating. An alarm clock comprising a control circuit for demonstrating the alarm device.