JPH0564314B2 - - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm clock that automatically sets an alarm when lights are turned off.

[0002]

2. Description of the Related Art Generally, in an alarm clock, an alarm is set by a push-type or slide-type silence switch, and whether or not the alarm is set is determined from the state of the silence switch.

【0003】

[Problems to be Solved by the Invention] In the conventional system described above, an alarm is set every night before going to bed.
I often forget to set my alarm.
As a result, I ended up oversleeping the next morning and being late.

[0004] The present invention uses a detection circuit to detect when the surroundings suddenly become dark, assumes that the lights are off, and sets an alarm using a setting device,
The location of the clock at that time is also clearly indicated.

[0005]

Embodiment In FIG. 1, 1 is an oscillator, 2 is a frequency divider, 3 is a drive circuit for a motor 4, and the motor 4 is used to advance a time display hand (not shown).
Reference numeral 5 denotes a sound generation circuit, which generates a message such as "Alarm has been set" when an alarm is set. 6 is an alarm circuit, 7 is a generator, 8, 9, and 10 are gate circuits, and 11 is a differential circuit. 12 is a phototransistor, 13 is a resistor, 14 is a differential circuit, 15 is a level detection circuit, 16 is a timer circuit set to, for example, 10 outputs, and this and the gate circuit 8 constitute a detection circuit. 17 is an alarm set switch, and 18 is an alarm switch that closes at a set time. 19 is a one-shot circuit, and 20 is a light emitting device. 21 is a setting device that automatically sets the alarm by closing the alarm switch 17;
For example, it has a configuration as shown in FIG.

[0006] In FIG. 2, 22 is an alarm set button, which has an arm portion 22a extending downward and a collar portion 22b. Arm portion 22a
is for opening and closing the alarm switch 17 by pressing the spring contact piece 17a of the alarm switch 17, and is always pressed upward by the spring force of the spring contact piece 17a. The flange portion 22b engages with the locking piece 23 to hold the set button 22 in a pressed state. The locking piece 23 is fixed to a magnetic body 24, and both are fixed so as to be swingable about a shaft 25. One end of a spring 26 is fixed to the magnetic body 24, and is always pulled upward in the drawing.
Further, a pressing member 27 is fixed to the magnetic body 24, and a degree determining member 28 is provided on this pressing member 27. A solenoid 29 is driven by the output from the gate circuit 8 in FIG.

[0007] Next, the operation will be explained. now,
The set button 22 in FIG. 2 is connected to the locking piece 2 as shown.
It is assumed that the set switch 17 is held in the pressed state by the switch 3 and the alarm is in the non-set state. When the user forgets to set the alarm and turns off the light while trying to sleep, the phototransistor 12 suddenly changes from on to off, and the differentiator circuit 14 generates a differential pulse. The timer circuit 16 is activated by this differential pulse, and a pulse is generated after 10 seconds. On the other hand, the level detection circuit 15 produces an output when the surrounding area is dark beyond a certain level, and when this output and the pulse from the timer circuit 16 occur simultaneously, it is assumed that the light is turned off. For example, if a person crosses in front of this clock device and enters into the shadow, it will suddenly become dark and a pulse will be generated from the differentiator circuit 14, but in this case, the dark time is instantaneous and 10 When a pulse is generated from the timer circuit 16 seconds later, the light has already become bright and no output from the level detection circuit 15 is generated. Therefore, in such a case, it is not assumed that the lights are off, but only when it is dark even 10 seconds after the differential pulse is generated.

[0008] As mentioned above, when the pulse from the timer circuit 16 is generated from the gate circuit 8 10 seconds after the light is turned off, this causes the pulse to be supplied to the solenoid 29 in FIG. Therefore, the magnetic body 24 is attracted and the locking piece 23 rotates, disengaging from the flange 22b, and the spring force of the spring contact piece 17a causes the locking piece 23 to rotate.
is pushed upward. In this way, the set switch 17 is closed and the alarm is set. A differential pulse is generated from the differential circuit 11 by opening and closing the set switch 17, a message is read from the voice generating circuit 5, and a voice is generated from the sound generating device 7 saying "The alarm has been set."

On the other hand, from the gate circuit 19, for example, the width
A pulse of about 10 seconds is generated, and the light emitting device 20 lights up. The light emitting device 20 is provided near the set button 22 in FIG. 1 (not shown) so that the location of the set button can be known for only 10 seconds even after the light is turned off. In other words, when the alarm setting is not necessary, the set button 22 is pressed while the light is off and the light from the light emitting device 20 is used to bring the alarm into the non-set state.

[0010] Now, the alarm is set as described above, and when the alarm switch 18 is closed the next morning, the alarm circuit 6 is activated by the output from the gate circuit 9, and the sounding device 7 generates an alarm sound.

[0011] To stop the ringing, press the set button 22 in FIG. 2 to open the set switch 17. The set button 22 is held in a pressed state by a locking piece 23.

[0012] By the way, if you want to set an alarm during bright times such as daytime, press member 27 in FIG.
By pressing , the magnetic body 24 is pushed down, and the locking piece 23 is swung to disengage from the flange 22b.

[0013] Next, another embodiment will be described.
In FIG. 3, an alarm set switch 30
is a push-and-push type set button (not shown) used in general alarm clocks.
It is opened and closed by the 31 is a flip-flop circuit, 32 is a gate circuit, 33
is an inverter, and 34, 35, and 36 are analog switches.

[0014] The same numbers as in FIG. 1 indicate the same things.

[0015] In the above configuration, it is assumed that the set switch 30 is open, the flip-flop circuit 31 is reset, and the alarm is in a non-set state. If you forget to set the alarm and turn off the light in this state, a pulse will be generated from the gate circuit 8 in the same manner as above, the flip-flop circuit 31 will be set, and the alarm will be set. As the output of the flip-flop circuit 31 rises, a pulse is generated from the differentiating circuit 36, a message saying "Alarm has been set" is generated from the voice generating circuit 5, and a voice is generated from the sound generating device 7.

[0016] When the alarm switch 17 is closed the next morning, an output is generated from the gate circuit 9, an alarm signal is generated from the alarm circuit 6, and an alarm sound is generated from the sound generating device 7.

[0017] To stop the ringing, the set button of the set switch 30 is pressed twice. Since the set switch 30 is currently open, one press will close the set switch 30 and another press will open it again. This opening/closing generates a pulse from the differential circuit 35, resets the flip-flop circuit 31, and stops the alarm sound.

[0018] If the set switch 30 is closed and the alarm is set before the lights are turned off, pressing the set button once changes the set switch 30 from closed to open, so the sound can be stopped.

[0019] The present invention is applicable not only to analog watches but also to all-electronic watches.

【0020】

[Effects of the Invention] According to the present invention, since the alarm is automatically set when the lights are turned off, it is possible to eliminate forgetting to set the alarm.
Frees you from the hassle of setting alarms.

[0021] Moreover, since the light emitting device is turned on for a certain period of time when the alarm is set by turning off the light, the whereabouts of the clock can be known even when the light is off, and the setting of the alarm can be easily canceled when it is not necessary.

[0022] Furthermore, when the alarm is set, by notifying the user that the alarm has been set, the user can confirm that the alarm has been set, and can go to bed with peace of mind.

[Brief explanation of the drawing]

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

[Fig. 2] Cross-sectional view showing an example of a setting device

[Figure 3] Logical diagram showing another embodiment

[Explanation of symbols]

5...Sound generation circuit 6...Alarm circuit 7...Sounding device 8...Gate circuit 12...Phototransistor 14... Differential circuit 15...Level detection circuit 16...Timer circuit 17...Set switch 19...One shot circuit 20...Light-emitting device 21...Set device 22...Set button 23...Latching piece 24...Magnetic material 29...Solenoid 31...Flip-flop circuit.

Claims (2)

[Claims] Claim 1: A detection circuit that generates an output when the surrounding area suddenly becomes dark due to lights being turned off, etc., a setting device that sets an alarm based on the output of the detection circuit, and a device that generates a constant alarm when the alarm is set. and a light emitting device that lights up for a period of time. [Claim 2] A detection circuit that generates an output when the surroundings suddenly become dark due to lights being turned off, etc., a setting device that sets an alarm based on the output of this detection circuit, and a set device that generates an alarm based on the output of the detection circuit. An alarm clock comprising: a notification device that notifies the user that an alarm has been set; and a light emitting device that lights up for a certain period of time when the alarm is set.