JPH0997501A - Emergency flash lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an emergency flash lamp capable of smoothly accessing its location, by lighting the flash lamp for a fixed time, when an earthquake of a certain magnitude or more occurs in dark, or when sudden dark is caused due to power outage, other than a normal lighting function. SOLUTION: When a phototransistor 23 is turned off and when an earthquake occurs in a dark condition, the vibration of the earthquake is detected by a vibration detecting part 24 to output a signal by an AND circuit 29. A timer circuit 27 starts to drive a driver circuit 28 to light a lamp 1 for a fixed time. Also when it becomes suddenly dark, a lamp 1 is lit for a fixed time by a differentiation circuit 25. In dark, when an earthquake occurs, or the electricity is cut off, a user can easily access the flash lamp.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flashlight suitable for disaster prevention, which has a normal lighting function and is turned on for a certain period of time when it suddenly becomes dark or when vibration is detected in the dark.

[0002]

2. Description of the Related Art A flashlight exerts its power when it becomes dark due to a sudden power failure. However, it is difficult to smoothly go through the darkness to the place where the flashlight is stored. Of course, when there is a power outage due to a breaker, you have to go to the place where the breaker is,
After all, it is necessary to travel in the darkness along the walls. Also, when going to sleep, if you turn off the switch on the wall and turn off the lights, you have to feel for the sleeping position. Besides this, for example, if an earthquake occurs in the dark,
Depending on the size of the earthquake, it may be necessary to evacuate to a safe place or to prevent furniture with poor sitting from falling down. In this case, the above measures cannot be taken smoothly in the darkness.

[0003]

SUMMARY OF THE INVENTION In addition to the normal lighting function, an object of the present invention is to turn on for a certain period of time when an earthquake of a certain magnitude or more occurs in the dark or when it suddenly becomes dark due to a power failure or the like. By providing a flashlight for disaster prevention, it is possible to smoothly go to the storage location of the flashlight.

[0004]

In order to achieve the above object, a flashlight for disaster prevention according to the present invention comprises a lamp, a manual switch for turning on the lamp, and a light detection sensor for detecting light and darkness of an external environment. , A vibration detecting means for detecting a vibration of the flashlight body having a strength higher than a predetermined level, the vibration detecting means detecting a vibration having a strength higher than a predetermined level, and the light detection sensor detecting a brightness higher than a predetermined level. If not, an AND circuit that outputs a signal, a timer circuit that is activated by the signal of the AND circuit and creates a fixed time, and the output of the timer circuit connects the lamp to a power supply for the fixed time. A switch circuit for operating the lamp, and in addition to lighting the lamp by the manual switch, when the external environment has a brightness below a predetermined level and vibration of a predetermined level or more is detected, the lamp for a certain period of time. It is arranged to light up. Further, the present invention, in the above configuration, provided with a differentiating circuit for detecting that the light detection sensor darkens at a predetermined speed or more, is connected so as to input the detection output of the differentiating circuit to the timer circuit, In addition to the signal from the AND circuit, the timer circuit is configured to be activated by the detection output of the differentiating circuit. When the vibration of the intensity is detected and when the external environment becomes darker than a predetermined speed, the lamp is configured to be turned on for a certain period of time. Furthermore, the present invention is the above-mentioned configuration, wherein the flashlight is a type in which the lamp part including the reflector can be removed from the flashlight body, and when the lamp part is coupled to the flashlight body, the positive terminal and the negative terminal of the battery are manually operated. A circuit board on which the AND circuit, the timer circuit, and the switch circuit are mounted is provided at the base of the lamp by pressing the pair of lamp terminal contact parts provided at the base of the lamp through a switch. Configured. Furthermore, the present invention is configured as described above, in which the flashlight main body is formed of a resin member through which light passes, and the sensor is arranged inside the flashlight main body.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a more preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external view of a flashlight for disaster prevention according to the present invention, partially broken away.
This flashlight is of a type in which a lamp portion including a transparent resin plate, a reflector 11, a lamp 10 and the like is screwed into the flashlight body side. The lamp 10 is inserted and fixed in the socket portion 13 a of the lamp base 13, and the circuit board 9 on which components such as ICs configuring each circuit are mounted is attached to the lamp base 13. When the lamp part is screwed into the flashlight body side, the + and-terminals of the battery housed in the flashlight body are pressed against the connection terminals 8 and the lamp terminals 12 (see FIG. 2) of the lamp base 13. At the same time, the connection terminals 7 and 8 also protrude from the switch portion 3 of the lighting switch 2,
6 are pressed against each other. When the lighting switch 2 is pressed, the battery is connected to the lamp 10 and functions as a portable illuminator.

FIG. 2 (a) is a right side view of FIG. 1 showing the structure around the lamp base, and FIG. 2 (b) is a view showing the peripheral part of the lamp.
2A is a left side view, and FIG. 2C is a right side view of FIG. 2A showing a connection state of a lighting switch and a connection terminal of a lamp base. The central terminal 10a of the lamp 10 has stop tabs 14,1
In FIG. 5, it is pressed against the lamp connecting portion 12b which is one end of the lamp terminal 12 attached to the lamp base 13. On the other hand, the grounding terminal 10b of the lamp 10 is
At 19, the socket connection portion 7 a, which is one end of the connection terminal 7 attached to the lamp base 13, is brought into contact. The lamp base 13 is engaged with the flange 11a of the reflector 11 by the claw 13b, and the lamp base 13 is rotatable with respect to the reflector 11. Therefore, when the lamp unit is screwed into the flashlight body side, the reflector 11 rotates, but the lamp base 13 does not rotate. The circuit board 9 mounted on the lamp base 13 has a phototransistor 23, which is a light detection sensor for detecting the light and darkness of the external environment.
Is directly attached. Further, a vibration sensor 24 that detects a vibration having a predetermined strength or more is attached.

The circuit board 9 has connection cables 20, 21, 2
2, the lamp terminal 12 and the connection terminals 7 and 8 are connected to each other to supply power. FIG. 3 is a circuit block diagram of a disaster prevention flashlight according to the present invention. The circuit of this flashlight is a phototransistor 23, which is a light detection sensor.
It is composed of a differentiating circuit 25, an amplifying circuit 26, a timer circuit 27, a driver circuit 28, a vibration detecting section 24, an AND circuit 29 and an amplifying circuit 30. Phototransistor 2
3. The circuit parts of the differentiating circuit 25 and the amplifying circuit 26 are circuits for detecting a sudden darkening, and the circuit parts of the vibration detecting part 24, the AND circuit 29 and the amplifying circuit 30 are in a dark state in case of an earthquake. This is a circuit for detecting shaking.

FIG. 4 is a circuit diagram showing an embodiment of a flashlight circuit according to the present invention. A series circuit of a diode 36, a resistor 37, and a phototransistor 23 is connected between the + and − terminals of the battery 31. The diode 36 is for protecting the IC and the like when the dry battery is put in reverse. In addition, when it is desired to use only the function of a normal flashlight without operating the automatic lighting function according to the present invention, the battery may be inserted so that the polarity thereof is opposite to that shown in FIG. The differentiating circuit 25 includes a resistor 37, a capacitor 38 and a resistor 4
It is composed of 1. An inverter 39 composed of a NAND gate is connected to a connection point between the capacitor 38 and the resistor 41, and an inverter 40 is connected to the inverter 39. The output of the inverter 40 is a timer circuit 2 including a diode 42, a capacitor 43 and a transistor 44.
7 is connected. The collector of the transistor 44 is connected to the base of the transistor 46,
Is connected to the base of the transistor 47. The emitter of the transistor 47 is connected to one end of the lamp 1, and the current of the battery 31 is applied to the lamp 1 by the diode 36,
It can be supplied through the transistor 47.

The vibration sensor 32 is composed of a magnet 34 suspended from the circuit board 9 by a spring 33, and a detection coil 35 arranged close to the magnet 34. When a strong shaking exceeding a predetermined level occurs due to an earthquake, the vibration of the spring 33 changes the magnetic flux of the magnet 34 to generate an electromotive force in the detection coil 35. The vibration sensor 32 can be manufactured at a low cost because it has a simple shape including a coil, a magnet and a spring. Vibration detector 2
4 is composed of a vibration sensor 32 and an operational amplifier 49. One end of the detection coil 35 is connected to the inverting input terminal of the operational amplifier 49, and ground is connected to the non-inverting input terminal. Output of operational amplifier 49 and phototransistor 23
Is output from the NAND gate 50 that constitutes the AND circuit 29.
Of the NAND gate 50, and the output of the NAND gate 50 is connected to the input of
It is connected to the. The cathode of the diode 52 is connected to the base of the transistor 44.

FIG. 5 is a waveform diagram for explaining the circuit operation of FIG. When the external environment is bright, the phototransistor 23 is turned on through the main body of the flashlight. Therefore, the input of the inverter 39 is low level, and the output of the inverter 40 is low level. Also,
Since the input of the NAND gate 50 is also low level, the output of the inverter 51 is also low level. Transistor 4
The base of 4 is at the low level, and the transistor 4
7 is off and the lamp is off.

Now, for example, when it suddenly becomes dark due to a power failure or the like, the brightness changes as shown in (a1), and the output of the differentiating circuit, that is, the output voltage of the capacitor 38 is (b).
As shown in 1), the on level of the inverter 39 is exceeded. Therefore, the output of the inverter 39 becomes low level, and the capacitor 43 is connected to the inverter 40 and the diode 42.
To charge the battery to near the battery voltage. Transistor 4
4, 46, 47 are turned on, and the lamp 1 is turned on ((d1) (e1)). The output voltage of the capacitor 43 is
As shown in (c1), it is gradually discharged through the resistor 45 between the base and the emitter of the transistor 44, and decreases with time. After t seconds, for example, 20 seconds, the output voltage of the capacitor 43 drops to a voltage at which the transistor 44 is turned off, the transistor 47 is also turned off, and the lamp 1 is turned off ((d1) (e1)).

The lamp 1 maintains normal brightness for a predetermined period of time, becomes gradually darker after a predetermined period of time, and finally turns off. This is before turning off completely
By gradually dimming, it prompts you to take the flashlight early and turn on the lighting switch, and because the flashlight itself goes out of the pat, such lighting is prevented to prevent it from repeating lighting again. It has a characteristic. At dusk or the like, it becomes dark gradually and the input of the inverter 39 does not reach the ON voltage, so that the lamp 1 does not light up. Next, the operation when an earthquake occurs in the dark will be described. When the brightness is below a predetermined level as shown in (a2), the output of the collector of the phototransistor 23 is (b2).
Since it is at a high level as shown in, the NAND gate 50
One of the inputs is high level. However, since the other input is at the low level, the lamp 1 is off.

When a strong shaking exceeding a certain level occurs due to an earthquake, the magnet 34 vibrates and an electromotive force is generated in the detection coil 35 (c2). Therefore, the output of the operational amplifier 49 becomes high level as shown in (d2), the output of the NAND gate 50 becomes low level, and the output of the inverter 51 becomes high level (e2), so that the timer circuit is activated and (f2 ) Lamp 1 with the characteristics of (g2) and (h2)
Lights up. While the magnet 34 is vibrating with a certain strength or more, electromotive force is generated in the detection coil 35 as shown in (c2), so that the outputs of the operational amplifier 49 and the inverter 51 are (d2) ( As shown in e2), the output of the detection coil 35 is output until it falls below a certain level.
The timer circuit is restarted multiple times during that time, and the inverter 5
Lamp 1 from the time when the output of 1 last became high level
Lights for t seconds. The operational amplifier 49 can adjust the offset level by a variable resistor in the circuit board, and can adjust the lighting level of the lamp depending on the intensity of vibration. In this embodiment, the example in which the lamp part is removed and the dry battery is inserted has been described, but a flashlight of a type in which a battery cover is provided at the rear or side of the main body of the flashlight and the battery is inserted to remove the battery is also the same. Is applicable to.

[0014]

As described in detail above, the flashlight for disaster prevention according to the present invention includes a lamp, a manual switch for lighting the lamp, a light detection sensor for detecting the light and dark of the external environment, and a light detection sensor. Differentiation circuit for detecting that it becomes dark at a speed of above, vibration detection means for detecting the vibration of the flashlight body with a predetermined strength or more, and the vibration detection means detects a vibration of a predetermined strength or more, And when the light detection sensor does not detect the brightness higher than a predetermined value, an AND circuit that outputs a signal and a timer circuit that is activated by the detection output of the differentiation circuit or the signal of the AND circuit and creates a certain time And a switch circuit that connects the lamp to the power supply for a certain period of time by the output of the timer circuit, and in addition to lighting the lamp by a manual switch, when the external environment becomes darker than a predetermined speed, Certain time a predetermined less brightness when detecting vibration of a predetermined or higher strength and, is arranged to light the lamp. Therefore, even if the room goes dark due to an unexpected power outage, the flashlight automatically turns on for a certain period of time, and you can rely on the light to go smoothly to the place where the flashlight is installed. After you get the light, you can turn on the light switch and take action to deal with the power failure. In addition, when an earthquake occurs in the dark, the flashlight will automatically turn on for a certain period of time at the same time as the earthquake occurs, and you can hold the flashlight in your hand. There is an effect that can be taken.

[Brief description of drawings]

FIG. 1 is an external view of a flashlight for disaster prevention according to the present invention, partially broken away.

2A is a right side view of FIG. 1 showing a structure around a lamp base, FIG. 2B is a left side view of FIG. 2A showing a peripheral part of the lamp, and FIG. 2C is a lighting switch and a lamp. It is a right view of FIG. 2A which shows the connection state of the connection terminal of a base.

FIG. 3 is a block diagram of a circuit of a flashlight for disaster prevention according to the present invention.

FIG. 4 is a diagram showing an embodiment of a circuit of a flashlight for disaster prevention according to the present invention.

FIG. 5 is a waveform chart for explaining the operation of FIG. 4;

[Explanation of symbols]

 1 ... Flashlight for disaster prevention 2 ... Lighting switch (manual switch) 3 ... Switch part 5, 6 ... Switch terminal 7, 8 ... Connection terminal 9 ... Circuit board 10 ... Lamp 11 ... Reflector 12 ... Lamp terminal 13 ... Lamp base 14 -19 ... Stop tab 20, 21, 22 ... Connection cable 23 ... Phototransistor 24 ... Vibration detection section 25 ... Differentiation circuit 26, 30 ... Amplification circuit 27 ... Timer circuit 28 ... Driver circuit 29 ... AND circuit 31 ... Battery 32 ... Vibration Sensor 33 ... Spring 34 ... Magnet 35 ... Detection coil 36, 42, 52 ... Diode 37, 41, 45 ... Resistor 38, 43, 48 ... Capacitor 39, 40, 51 ... Inverter 44, 46, 47 ... Transistor 49 ... Operational amplifier 50 ... Nand Gate

Claims (4)

[Claims] 1. A lamp, a manual switch for turning on the lamp, a light detection sensor for detecting light and darkness of an external environment, and a vibration detection unit for detecting vibration of a main body of the flashlight having a strength higher than a predetermined level. An AND circuit that outputs a signal when the vibration detection unit detects a vibration of a predetermined intensity or more and the light detection sensor does not detect a brightness of a predetermined intensity or more, and the signal is activated by the AND circuit. And a switch circuit for connecting the lamp to a power source during the fixed time by the output of the timer circuit and a timer circuit for creating a fixed time. A flashlight for disaster prevention, characterized in that it is configured to turn on the lamp for a certain period of time when a vibration having the following brightness and having a strength higher than a predetermined level is detected. 2. A differential circuit is provided for detecting that the light detection sensor becomes dark at a predetermined speed or more, and the differential circuit is connected to the timer circuit so as to input the detection output of the differential circuit. In addition to the signal, the timer circuit is configured to be activated by the detection output of the differentiating circuit. The flashlight for disaster prevention according to claim 1, characterized in that the lamp is turned on for a certain period of time even when vibration is detected and when the external environment becomes darker than a predetermined speed. 3. A flashlight of a type in which a lamp part including a reflector can be removed from a flashlight body, wherein a positive terminal and a negative terminal of a battery are connected via the manual switch when the lamp part is coupled to the flashlight body. And a circuit board on which the AND circuit, the timer circuit, and the switch circuit are mounted, is provided at the base of the lamp. The flashlight for disaster prevention according to claim 1 or 2. 4. The flashlight for disaster prevention according to claim 3, wherein the flashlight main body is formed of a resin member through which light passes, and the sensor is arranged in the flashlight main body.