JPH08241611A - Earthquake light - Google Patents

Abstract

PURPOSE: To automatically turn on a light so as to illuminate around it in the occasion of an earthquake so that one can take an action quickly, wherein the detection of an earthquake shake by a shake detecting switch allows an electric power source circuit to change from the normaly-open circuit into the closed one so that electric supply to a bulb is started. CONSTITUTION: Poles 9a and 9b of an earthquake light are put in sockets of an commercial electric power source so that a battery 4 may be charged by a charging circuit 5, wherein a power switch 7 should be turned on to automatic side in advance. In this circumstance, an output contact 52a of a power failure detecting relay 52, a shake detecting switch 3, and a contact element 8b of operating relay 8 are all turned off, so that power is not supplied to the relay 8, causing the contact element 8a to be off, further causing no power to be supplied to a bulb 1. However, if shaking occurs by the earthquake, switch 3 is turned on, so that the relay 8 is turned on, causing the elements 8a and 8b to be turned on, further causing the power to be supplied to the bulb 1 so as to turn on it. Then, the power is supplied to the relay 8 through the element 8b even when the switch 3 is turned off, so that the power is usually supplied to the bulb 1, securing it to be continuously turned on. In case of the power failure with the earthquake, the power is supplied to the bulb 1 from the battery 4, allowing the bulb 1 to be turned on.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake light which is automatically turned on when an earthquake occurs.

[0002]

2. Description of the Related Art Conventionally, in a building or the like that relies on electric lighting with a commercial power source, there are known lamps that automatically turn on when the commercial power source fails.

[0003]

When an earthquake occurs in a building or the like that relies on electric lighting with the lighting switch turned off, it takes time to search for a flashlight or a lighting switch in the dark. , It was difficult to take prompt action. As described above, there are lamps that are automatically turned on when there is a power failure, but there are few lamps that are automatically turned on when an earthquake occurs, and there is no lamp for general household use.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an earthquake light that illuminates the surroundings so that prompt action can be taken by automatically turning on the light when an earthquake occurs. That is.

[0005]

In order to achieve the above object, the seismic lamp according to the first aspect of the present invention comprises a light emitting body which emits light by electric power, a power supply circuit for supplying electric power to the light emitting body, and a shake caused by an earthquake. When an electric shock is detected, a seismic switch for closing the normally open circuit of the power supply circuit is provided so as to start supplying electric power to the light emitter.

A seismic lamp according to a second aspect is the seismic lamp according to the first aspect, wherein the power supply circuit is configured to supply electric power from a battery to the light emitting body.

According to a third aspect of the present invention, in the seismic light according to the second aspect, a rechargeable battery is used as the battery, and a charging circuit for charging the battery with electric power from a commercial power source is provided. It is a thing.

According to a fourth aspect of the present invention, there is provided the seismic light according to the third aspect, wherein the lamp is provided with an electrode plug so that the power source of the charging circuit can be directly received from a commercial power outlet. .

The seismic lamp according to claim 5 is the seismic lamp according to claim 1, in which the ambient illuminance is detected, and when the detected illuminance is larger than a predetermined illuminance, the power supply circuit is forcibly opened. It is characterized in that a detection switch is provided.

[0010]

In the seismic lamp of the first aspect, the power supply circuit is an open circuit during normal times when there is no shaking of the earthquake, so that no power is supplied to the light emitter and the light emitter does not emit light. On the other hand, when an earthquake sways, the seismic switch detects the sway and closes the power supply circuit, so that power is supplied to the light emitter and the light emitter emits light. The surroundings are illuminated by this light emission.

According to the seismic lamp of the second aspect, even if a power failure occurs due to an earthquake, the battery can supply electric power to the light emitting body to emit light.

In the seismic light of claim 3, the battery is charged by the electric power from the commercial power source in the charging circuit,
There is no possibility that the battery will be completely discharged by spontaneous discharge etc. unlike when the battery is not charged.

In the seismic lamp according to the fourth aspect, the lamp can be installed and charged simply by inserting the lamp into a commercial power outlet, and installation work and wiring work are unnecessary.

According to the seismic lamp of claim 5, when the surrounding illuminance detected by the illuminance switch is larger than a predetermined illuminance, the power circuit is forcibly opened so that the surroundings are sufficiently bright in the daytime. Regardless of the earthquake
It is possible to prevent the light emitting body from emitting light by not supplying electric power to the light emitting body.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction and operation of an embodiment of the seismic lamp according to the present invention will be described below with reference to FIGS. FIG. 1 is an electric circuit showing a configuration example of the electric circuit of the seismic lamp according to the embodiment. In this electric circuit, the seismic lamp is composed of a light bulb 1 as a light emitting body which emits light by electric power, and a power supply circuit 2 for supplying electric power to the light bulb 1. The power supply circuit 2 includes a seismic switch 3 that detects shaking of an earthquake, a rechargeable battery 4, a charging circuit 5 for the battery 4, an illuminance detection switch 6, and the like. The light bulb 1 is connected between a continuous lighting side terminal of a power switch 7 (SW1) described later and the negative side of the battery 4. In addition, the drive relay 8 (X1) that operates by the operation of the seismic switch 3
One of the contact elements 8a is connected to the positive side of the battery 4 and the same location as the light bulb 1 connected to the continuous lighting side terminal of the power switch 7.

One of the contact terminals of the seismic switch 3 which is closed by the shaking of the earthquake is connected to the automatic lighting side terminal of the power switch 7, and the other is connected to one of the coil terminals of the drive relay 8. One of the coil terminals of the drive relay 8 is connected to the negative side of the battery 4 via the output transistor 63 of the illuminance detection switch 6. Another contact element 8b of the drive relay 8 is connected in parallel to the contact terminal of the seismic switch 3. Further, the contact terminal 52a which is closed at the time of power failure of the power failure detection relay 52 (X2) is similarly connected in parallel. The common terminal of the power switch 7 is connected to the positive side of the battery 4.

When the power switch 7 is closed on the "automatic" side and an earthquake occurs when the ambient illuminance is not sufficient and the seismic switch 3 is closed, the positive switch of the battery 4 causes the power switch 7-the seismic switch. 3-Drive relay 8-Current flows to the negative pole of the battery 4 via the output transistor 63 of the illuminance detection switch 6. Drive relay 8 when current flows
And the contact elements 8a and 8b are closed. When 8a is closed, electric power is supplied from the battery 4 to the light bulb 1, and the light bulb 1 emits light. When 8b is closed, the self-holding circuit of the drive relay 8 is formed, and even if the vibration of the earthquake is suppressed and the seismic switch 3 is opened, the drive relay 8 continues to operate, so that the light bulb 1 can continue to emit light. . To turn off the lighted bulb 1, the power switch 7 is switched to the “off” position and the self-holding circuit of the drive relay 8 is released.

The power failure detection relay 52 provided on the commercial power circuit side of the charging circuit 5 closes the output contact element 52a when the commercial power fails, and operates the drive relay 8 in the same manner as described above to cause the light bulb 1 to emit light. it can.

The illuminance detection switch 6 outputs the output voltage Vout according to the difference between the voltage Vpc at one end of the photoconductive element 61 and the voltage Vpc at the one end of the photoconductive element 61 whose electric resistance changes according to the amount of received light. It is configured by an operational amplifier 62 for changing, an output transistor 63 for switching whose base is connected to the output side of the operational amplifier 62, and other resistance elements. The collector of the output transistor 63 is connected to the coil terminal of the drive relay 8 and the emitter is connected to the negative side of the battery 4. The reference voltage Vref is the voltage V at one end of the photoconductive element 61 when the illuminance at the installation location is the minimum illuminance that does not require the lighting of the light bulb 1.
The value of each resistive element for voltage division is set so as to be the same as pc. When the illuminance at the installation place becomes smaller than the above-mentioned minimum illuminance, the output side of the operational amplifier 62 is turned on, and the transistor 63 can be turned on.

The power switch 7 is "automatic", "off",
"Continuous" mode can be switched, "Automatic" side when automatically lighting in the event of an earthquake or power failure, "Continuous" side when used in the same way as a flashlight, when automatically lighting and then extinguishing, or continuous lighting After turning off the light, turn it off.
Switch to the side.

The charging circuit 5 comprises a protective fuse 51, a power failure detection relay 52, a transformer 53 for lowering the commercial power supply voltage to a desired voltage, a money flow circuit 54 on the secondary side of the transformer, and the like, and is plugged into a commercial power outlet. Are connected to the electrode plugs 9a and 9b.

FIGS. 2A and 2B are a front perspective view and a left side perspective view showing the internal structure of the seismic lamp according to the embodiment. Each component of the power supply circuit 2 (excluding the battery 4) and the light bulb 1 are mounted on the same substrate 21, and the substrate 21 is fixed to the upper region inside the casing 100. Further, electrode plugs 9a and 9b to be inserted into a commercial power outlet are attached to a rear wall portion of the casing 100, and four NiCd batteries 4 connected in series are arranged in a lower region of the casing 100. An opening window 100a for illuminance detection is formed on the front wall of the casing 100 facing the light receiving portion of the illuminance detection switch 6. Further, the front wall portion (the thick line portion 100b in FIG. 2B) of the casing 100 facing the light bulb 1 is formed of a transparent material so that the light of the light bulb 1 is transmitted to the outside. An opening 100c is provided on the side surface of the casing 100 so that the power switch 7 can be operated, and a knob of the power switch 7 is exposed to the outside.

In the seismic lamp having the above structure, the electrode plug 9
The batteries a and 9b are inserted into commercial power outlets, and the battery 4 is charged by the charging circuit 5 in a normal state without an earthquake. Further, the power switch 7 is switched to the "automatic" side, and at this time, all of the output contact 52a of the power failure detection relay 52, the seismic switch 3, and the contact element 8b of the drive relay 8 are OF.
Since it is F, the drive relay 8 is not energized, the contact element 8a is turned off, and electric power is not supplied to the electric bulb 1.

In this state, if an earthquake causes shaking,
The seismic switch 3 is turned on, the drive relay 8 is energized, the contact elements 8a and 8b are turned on, and electric power is supplied to the light bulb 1 to turn it on. After that, even if the seismic switch is turned off, the drive relay 8 is energized via the contact element 8b and the electric power is continuously supplied to the electric bulb 1, so that the electric bulb 1 is continuously turned on. Here, even if a power failure occurs with an earthquake, electric power is supplied to the light bulb 1 from the battery 4 that is charged in normal time,
The light bulb 1 can be turned on. To turn off the automatically lighted bulb 1, the power switch 7 may be switched to the “off” position. In addition to the automatic lighting function, if you want to forcibly light the light bulb 1, the power switch 7
Should be switched to the "continuous" position.

In the above-mentioned earthquake light, when a normal power failure occurs, the output contact 52a of the power failure detection relay 52 becomes O.
Since it is N, the light bulb 1 can be turned on in the same manner as when the earthquake occurred.

Although the rechargeable battery 4 is used for the power supply circuit 2 in the seismic lamp of the above-mentioned embodiment, a dry battery having no charging function is used in place of the battery 4 and the charging circuit 5, and an earthquake having a simpler structure is performed. You may comprise a light.

The electrode plugs 9a and 9b are not only for the purpose of obtaining charging power from a commercial power outlet, but also because the lamp is held by the contact pressure between the outlet and the plug when it is inserted into the outlet, the lamp is not attached. It also serves as a jig for the purpose, and the two purposes of mounting the lamp and receiving charging power can be achieved simply by inserting it into an outlet.

[0028]

According to the seismic lamp of the first aspect, since the power supply circuit is opened by the seismic switch and power is not supplied to the light emitter, the light emitter does not emit light during normal times when there is no shaking of the earthquake. This has the effect of not wasting power.
When an earthquake shakes, the seismic switch detects the shake and closes the power supply circuit, so that power is supplied to the light emitter and the light emitter emits light. Therefore, when an earthquake occurs, the surroundings are illuminated by the light-emitting body and the visibility can be secured, so that there is an effect that prompt action can be taken.

According to the seismic lamp of the second aspect, even if a power failure occurs concurrently with the occurrence of an earthquake, it is possible to supply electric power to the light emitting body to cause the light emitting body to emit light, so that the surroundings are illuminated by the light emission of the light emitting body. The effect is that

According to the seismic lamp of claim 3, it is possible to prevent the situation where the battery is completely discharged by spontaneous discharge or the like and the light emitter cannot be made to emit light in an emergency, unlike when the battery is not charged. The effect is that you can do it.

According to the seismic lamp of the fourth aspect, since the charging power source can be secured and the lamp can be installed at the same time, there is an effect that the installation work and the wiring work for the separate lamp are unnecessary, and the installation can be easily performed.

According to the seismic lamp of claim 5, when the surroundings are sufficiently bright such as daytime, power is not supplied to the light emitter and the light emitter does not emit light even if an earthquake occurs.
This has an effect of preventing wasteful consumption of electric power.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram of an earthquake light according to an embodiment.

[Fig. 2] (a) is a front perspective view of the earthquake light (b) is a left side perspective view of the earthquake light

[Explanation of symbols]

 1 light bulb 2 power circuit 3 seismic switch 4 battery 5 charging circuit 6 illuminance detection switch 7 power switch 8 drive relay 9a, b electrode plug

Claims (5)

[Claims] 1. A light emitting body which emits light by electric power, a power supply circuit for supplying electric power to the light emitting body, and a power supply circuit which is normally opened so as to start supplying electric power to the light emitting body when a shake due to an earthquake is detected. The seismic lamp is provided with a seismic switch that closes the power circuit that is a circuit. 2. The power supply circuit is configured to supply electric power from a battery to the light emitter.
Earthquake lights. 3. The seismic lamp according to claim 2, wherein a rechargeable battery is used as the battery, and a charging circuit for charging the battery with electric power from a commercial power source is provided. 4. The seismic lamp according to claim 3, wherein an electrode plug is provided so that power can be supplied from the commercial power source directly from a commercial power outlet. 5. An illuminance detection switch for detecting ambient illuminance and forcing the power supply circuit to open circuit when the detected illuminance is higher than a predetermined illuminance. Earthquake light.