JP3867827B2 - Emergency lighting device and emergency lighting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an emergency lighting device and an emergency lighting device.
[0002]
[Prior art]
An emergency lighting device such as a guide light or an emergency light is supposed to normally turn on a lamp for a specified time by an emergency battery when a commercial AC power supply fails. For this reason, it is necessary to detect whether the battery is at the end of its life by detecting the capacity of the battery.For example, a manual or automatic check switch forcibly generates a power outage and discharges the battery. Check the lighting status. Then, after the inspection, when it is determined that the battery is at the end of its life, the battery is replaced.
[0003]
This type of emergency lighting device is disclosed, for example, in Japanese Patent Laid-Open No. 9-19084 (prior art). In the emergency lighting device 30, as shown in FIG. 5, the light emitting diode LED emits light when the battery B is charged by the DC power source 31, and the light emitting diode LED does not emit light when the battery B is not charged. It is configured as follows. That is, when the commercial AC power supply AC is in a non-interruptible state, the battery B is charged by the DC power supply 31, and the transistor Q1 is turned on so that current flows through the path of the transistor Q1, the resistor R4, the light emitting diode LED, and the lamp L. The light emitting diode LED emits light. Further, when the commercial AC power supply AC is in a power failure state, no current flows through the resistor R5, so that the transistor Q1 is not turned on and the light emitting diode LED does not emit light. Furthermore, since the resistance value of the resistor R6 is increased, when the battery B is disconnected, no current flows through the resistor R5, and the light emitting diode LED does not emit light.
[0004]
[Problems to be solved by the invention]
In such an emergency lighting device of the prior art, when the battery is normally charged, a display is made with a light emitting diode or the like, and the life of the battery is compulsory using an inspection switch. It is checked immediately after a power failure. Then, the battery determined to have a lifetime has been replaced. However, checking and replacing batteries for a large number of emergency lighting devices is cumbersome and labor intensive because it is not possible to specify a battery that has a lifetime and it is necessary to prepare a large number of batteries. There are drawbacks.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide an emergency lighting device and an emergency lighting device capable of notifying battery life and easily replacing the battery.
[0006]
[Means for Solving the Problems]
The invention of the emergency lighting device according to claim 1 includes: a direct current power source; a charging circuit connected to the direct current power source and charging the battery during a non-power failure; a lighting circuit operating with the battery as a power source; A battery to be lit; a battery having a built-in backup power supply and having no capacity to normally light the lamp for a specified time within a first predetermined period immediately after the battery is connected to the lighting device Without determining the life state, it is determined that the battery is normal after the first predetermined period has elapsed and the battery voltage immediately after the second predetermined period has elapsed is equal to or higher than the predetermined voltage. thereby determining the battery life when the below, it is the second battery voltage even within the predetermined time period is determined to battery life falls below the predetermined voltage The determination condition of normal or battery life is determined by the battery determining means; battery determining means and adapted to always successfully reset the determination condition of normal or battery life when it is further desorbed battery Storage means for overwriting and storing each time judgment is made; when the connection between the battery and the lighting circuit is released when the power failure is released, the judgment state of the normality or life of the battery is read from the storage means, and the battery is In some cases, there is provided an informing means for informing that the battery life can be easily confirmed by changing the display state or generating sound, and that the battery can be replaced. A featured emergency lighting device.
[0007]
In the present invention and each of the following inventions, definitions and technical meanings of terms are as follows.
[0008]
The DC power supply may be anything as long as it can charge a battery. Examples thereof include a rectified or rectified and smoothed commercial AC voltage, and a rectified and smoothed circuit connected to a chopper circuit for smoothing.
[0009]
The lamp may be anything such as an incandescent bulb, a hot cathode fluorescent lamp, a cold cathode fluorescent lamp, or a rare gas discharge lamp.
[0010]
The notification means may be either display or sound. The notification according to the determination state of the battery life is, for example, differentiating the notification when the battery is normal and the notification when the battery is normal. For example, in the display, when the battery is normal, it is always turned on, when the battery is at the end of its life, it is blinked, or the display color is different between the two. Further, in sound, when the battery is normal, no sound is generated, and when the battery is at the end of its life, a sound is generated, or the timbre is made different between the two.
[0011]
The determination of the battery life state is not particularly limited as long as the battery life can be determined. For example, it can be determined by detecting the lamp lighting time, detecting the battery voltage, or the like.
[0012]
The battery is connected to a lighting circuit, and the lamp is turned on by the lighting circuit. In such a case, the battery voltage is lowered or is unstable due to fluctuations in the battery voltage within a first predetermined period, for example within a few seconds, immediately after the battery is connected to the lighting circuit. Noise may occur. For this reason, the battery determination means determines the state of battery life after the first predetermined period has elapsed.
[0013]
According to the present invention, the battery determination means is after the first predetermined period immediately after the battery is connected to the lighting device and when the battery voltage is equal to or higher than the predetermined voltage after the second predetermined period elapses. The battery is determined to be normal, and the battery life is determined when the battery voltage falls below a predetermined voltage. When the battery voltage falls below the predetermined voltage even within the second predetermined period, the battery life is determined and the battery life is determined. It can be easily confirmed and the battery can be replaced.
[0018]
The invention of the emergency lighting device according to claim 2 comprises the emergency lighting device according to claim 1, and a lighting device main body provided with the emergency lighting device.
[0019]
The emergency lighting device may be an emergency lighting device including the emergency lighting device of the present invention, such as a guide light embedded in a wall surface, and the lighting device main body on which the emergency lighting device is disposed.
[0020]
ADVANTAGE OF THE INVENTION According to this invention, the emergency lighting apparatus which arrange | positioned the emergency lighting device which can confirm battery life easily by an alerting | reporting means can be provided.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0022]
FIG. 1 is a circuit diagram of an emergency lighting device showing a first embodiment of the present invention. In the figure, 1 is an emergency lighting device, 2 is a DC power supply, 3 is a charging circuit, 4 is a lighting circuit, 5 is a lamp, 6 is battery determination means, 7 is storage means, and 8 is notification means.
[0023]
In FIG. 1, the commercial AC power supply Vs is connected to an input terminal of a rectifier DB1 via a normally closed switch SW1 and a transformer Tf, and a smoothing capacitor C1 is connected between output terminals of the rectifier DB1. The rectifier DB1 and the smoothing capacitor C1 rectify and smooth the AC voltage supplied from the commercial AC power supply Vs. The commercial AC power supply Vs, the rectifier DB1 and the smoothing capacitor C1 constitute a DC power supply 2, and the voltage across the smoothing capacitor C1 forms the output voltage of the DC power supply 2.
[0024]
The switch SW1 may be either a manual switch or an automatic switch. When the switch SW1 is turned on (opened), the electrical connection between the commercial AC power supply Vs and the rectifier DB1 is cut off. That is, the switch SW1 forcibly causes a power failure. The transformer Tf steps down the AC voltage of the commercial AC power supply Vs and inputs it to the input terminal of the rectifier DB1. The voltage ratio of the transformer Tf is appropriately set according to the rating characteristics of the lamp 5 described later.
[0025]
Further, between the switch SW1 and the transformer Tf, a relay coil of the relay Ry1 as a power failure detection means is connected between the input winding Tf1 of the transformer Tf. The relay Ry1 is energized by the commercial AC power supply Vs when there is no power failure, but is deactivated by a power failure of the commercial AC power supply Vs or an ON operation of the switch SW1. The relay Ry1 detects a power failure to the DC power source 2.
[0026]
A battery B1 is connected to the output side of the DC power source 2, that is, both ends of the smoothing capacitor C1 via the charging circuit 3 and relay contacts Ry1-a and Ry1-c of the relay Ry1. The positive side of the battery B1 is connected to the common contact Ry1-c of the relay Ry1, and the negative side is connected to the negative terminal of the DC power source 2. Since the relay Ry1 is energized at the time of non-power failure, the common contact Ry1-c and the normally open contact Ry1-a are connected, and the battery B1 is charged by the DC power supply 2. The charging circuit 3 includes a resistor R1.
[0027]
Further, a series circuit of a normally closed contact Ry2-b of a relay Ry2, which will be described later, a PNP transistor Tr as a switch element, a current limiting resistor R3, and a light emitting diode LED is connected to both ends of the smoothing capacitor C1. The base of the transistor Tr is connected to the normally open contact Ry1-a of the relay Ry1 via the base resistor R4. During a non-power failure, a DC voltage is generated across the smoothing capacitor C1. Then, a current flows from the positive terminal of the smoothing capacitor C1 to the normally open contact Ry1-a side of the relay Ry1 via the normally closed contact Ry2-b, the emitter, base and base resistance R4 of the transistor Tr, and the transistor Tr is turned on. . When the transistor Tr is turned on, current flows from the positive terminal of the smoothing capacitor C1 to the normally closed contact Ry2-b, the emitter and collector of the transistor Tr, the current limiting resistor R3, the light emitting diode LED, and the negative terminal of the capacitor C1, and the light emitting diode LED. Emits light. Since the battery B1 is charged by the direct current power source 2 at the time of non-power failure, the light emission of the light emitting diode LED indicates that the battery B1 is charged by the direct current power source 2.
[0028]
The lighting circuit 4 is connected to the battery B1 via the common contact Ry1-c and the normally closed contact Ry1-b of the relay Ry1, and the fluorescent lamp 5 as a lamp is connected to the output side of the lighting circuit 4. . The lighting circuit 4 is, for example, a high-frequency lighting circuit that outputs high-frequency power. When the relay Ry1 is de-energized, the common contact Ry1-c and the normally closed contact Ry1-b are connected to the battery B1. During the period when the relay Ry1 is de-energized, that is, during a power failure, the lighting circuit 6 operates using the battery B1 as a power source to turn on the fluorescent lamp 7.
[0029]
Further, both terminals of the battery B1 are connected to an input terminal of a battery determination circuit 6 as battery determination means. That is, the battery determination circuit 6 detects the battery voltage of the battery B1. The battery determination circuit 6 includes relay contacts (not shown) of the timer T1 and the relay Ry1 inside. Then, when the relay Ry1 is de-energized, that is, when switching from a non-power failure to a power failure, the timer T1 starts time measurement by the operation of the relay contact of the relay Ry1. The battery determination circuit 6 is configured to determine the battery voltage after the first predetermined period has elapsed without determining the battery voltage within a first predetermined period (for example, 3 seconds). .
[0030]
The first predetermined period is immediately after the battery B1 is electrically connected to the lighting circuit 4, so that the battery voltage is lowered, the battery voltage fluctuates and is unstable, and noise is generated. As a result, the battery determination circuit 6 may determine that the battery B1 has a lifetime. Therefore, after the first predetermined period has elapsed, by determining the battery life state, the battery determination circuit 6 may erroneously detect the battery voltage of the battery B1, or the battery determination circuit 6 itself may malfunction. Can be avoided.
[0031]
Then, as shown in FIG. 2, the battery determination circuit 6 determines that the battery B1 is normal when the battery voltage is equal to or higher than the predetermined voltage after the second predetermined period (for example, 25 minutes), and the battery voltage falls below the predetermined voltage. The battery B1 is sometimes determined to have a lifetime. Further, even within the second predetermined period, when the battery voltage falls below the predetermined voltage, the battery B1 is determined to have a lifetime.
[0032]
As described above, the battery determination circuit 6 as the battery determination means switches from a non-power failure to a power failure, and determines the state of battery life after the first predetermined period has elapsed. The battery determination circuit 6 is configured to reset the determination state of the battery B1, that is, to normalize the battery B1 when the battery B1 is detached. Although not shown, the battery determination circuit 6 is powered by the DC power source 2 when there is no power failure, and is powered by the built-in backup power source when there is a power failure.
[0033]
The battery life determination state determined by the battery determination circuit 6 is stored in a nonvolatile memory 7 as a storage unit. The nonvolatile memory 7 stores the normality (for example, “00”) and the life (for example, “01”) of the battery B1. The nonvolatile memory 7 is overwritten and stored every time the battery determination circuit 6 determines the battery life state. Therefore, when the battery B1 is detached, the battery B1 is stored as normal.
[0034]
The determination state of the battery life stored in the nonvolatile memory 7 as the storage means, that is, the normality or the life of the battery B1 is configured to be read by the control circuit 9. The control circuit 9 is operated by supplying power from the DC power supply 2 with its power supply terminals connected to both ends of the smoothing capacitor C1. In addition, a battery (not shown) is provided inside, and is operated by being powered by the battery during a power failure. The control circuit 9 includes a microcomputer having a CPU, ROM, RAM, etc. (not shown), a relay Ry2, and the like. The relay Ry1 is provided with a relay contact (not shown), and is configured to detect a power failure and the cancellation of the power failure. When the power failure is canceled, the battery life determination state stored in the nonvolatile memory 7, that is, the normal (for example, “00”) or the life (for example, “01”) of the battery B 1 is read and the determination is made. Notification according to the state is performed. That is, when battery B1 is normal, relay Ry2 is de-energized. Then, the light emitting diode LED always maintains a lighting state. Further, when the battery B1 is at the end of its life, the relay Ry2 is energized at a predetermined interval, for example, at an interval of 1 second. Then, the light emitting diode LED blinks at a predetermined interval, for example, at an interval of 1 second. The notification means 8 is formed by the control circuit 9 and the light emitting diode LED.
[0035]
When the light emitting diode LED is blinking, the battery B1 is at the end of its life and the battery B1 is replaced. When the battery B1 is detached from the emergency lighting device 1, the battery determination circuit 6 resets the determination state of the battery B1 to make the battery B1 normal. Thereby, normality of the battery life can be stored in the non-volatile memory 7, and the normal display of the battery B1 can be automatically displayed on the light emitting diode LED.
[0036]
As described above, since the battery determination circuit 6 determines the battery life after the first predetermined period has elapsed, erroneous detection of the battery voltage and malfunction can be prevented and determination with high reliability can be performed.
[0037]
Further, the notification unit 8 reads the battery life determination state of the battery B1 stored in the nonvolatile memory 7, and when the battery B1 is normal, causes the light emitting diode LED to be in a constantly lit state so that the battery B1 has a life. In this case, since the light emitting diode LED blinks, the life of the battery B1 can be easily confirmed and the battery can be replaced.
[0038]
Further, when the battery B1 is detached from the emergency lighting device 1, the battery determination circuit 6 resets the determination state of the battery B1 to normalize the battery B1, so that the battery B1 is automatically normal when the battery is replaced. It can be displayed.
[0039]
Next, a second embodiment will be described.
[0040]
FIG. 3 is a cross-sectional view of an emergency lighting device showing a second embodiment of the present invention, and FIG. 4 is a perspective view showing the appearance. Note that the same parts as those in FIG.
[0041]
The emergency lighting device 10 shown in FIGS. 3 and 4 is a guide light. In FIG. 3, the emergency lighting device 1 shown in FIG. In the figure, 7 is a straight tube fluorescent lamp, B1 is a battery, LED is a light emitting diode, and 12 is a lighting unit obtained by removing the fluorescent lamp 7, battery B1 and light emitting diode LED from the emergency lighting device 1. Is.
[0042]
The illuminating device main body 11 has a box-like body 14 having a translucent opening 13 on the front surface, and the emergency lighting device 1 shown in FIG. A frame-like frame body 15 is attached to the side so as to be openable and closable, and a projecting wall 16 having a tip abutting against a wall surface is provided around the frame body 15. Further, a translucent panel 17 is supported on the inner surface side of the frame 15, and a guidance display 18 is provided on the translucent panel 17 to cover the translucent opening 13 of the box-shaped body 14.
[0043]
Further, the reflecting portion 19 is attached to the frame 15 integrally with a support member 20 provided on the frame 15 so as to face the light emitting diode LED when the frame 15 is closed, and light is led out to the lower surface of the frame 15. A hole 21 is formed.
[0044]
And as shown in FIG. 4, the illuminating device main body 11 is embedded in wall surfaces 23, such as the escape port 22, and displays the escape port 22. As shown in FIG.
[0045]
When the battery B1 is normal, the light emitting diode LED is always turned on, and when the battery B1 is at the end of its life, the emergency lighting device 10 that can replace the battery can be provided by the notification means 8 that blinks the light emitting diode LED. .
[0046]
【The invention's effect】
According to the present invention, the battery determination means is after the first predetermined period immediately after the battery is connected to the lighting device and when the battery voltage is equal to or higher than the predetermined voltage after the second predetermined period elapses. the battery is judged to be normal, with the battery voltage is determined to battery life when below a predetermined voltage, a second battery voltage even within the predetermined time period is determined to battery life falls below a predetermined voltage, the notification means, Since the state of determination of the normality or the life of the battery is read from the storage means and the battery is informed of the end of the life, the life of the battery can be easily confirmed and the battery can be replaced.
[0049]
According to the second aspect of the present invention, it is possible to provide an emergency lighting device provided with an emergency lighting device that can easily check the battery life by the notification means.
[Brief description of the drawings]
FIG. 1 is a circuit diagram of an emergency lighting device showing a first embodiment of the present invention.
FIG. 2 is also an explanatory diagram showing determination of battery life based on battery voltage.
FIG. 3 is a cross-sectional view of an emergency lighting device showing a second embodiment of the present invention.
FIG. 4 is a perspective view showing the appearance.
FIG. 5 is a circuit diagram of a conventional emergency lighting device.
[Explanation of symbols]
B1 ... Battery 1 ... Emergency lighting device 2 ... DC power supply 3 ... Charging circuit 4 ... Lighting circuit 5 ... Fluorescent lamp 6 as a lamp ... Battery judgment circuit 7 as a battery judgment means ... As a storage means Non-volatile memory 8 ... notification means 10 ... lighting device 11 ... lighting device body

Claims (2)

DC power supply;
A charging circuit connected to a DC power source and charging the battery during a non-power failure;
A lighting circuit that operates using a battery as a power source;
A lamp that is lit by a lighting circuit in the event of a power failure;
In the first predetermined period immediately after the battery is connected to the lighting device with a built-in backup power supply, determine the battery life state in which there is no remaining capacity for the lamp to light normally over a specified time. Instead, the battery is determined to be normal when the battery voltage is equal to or higher than the predetermined voltage after the first predetermined period has elapsed and immediately after the second predetermined period has elapsed, and the battery life is determined to be when the battery voltage falls below the predetermined voltage. while, in the second battery voltage even within the predetermined time period is below a predetermined voltage can be determined that the battery life, and resets the determination condition of normal or battery life when the further battery desorbed Battery determination means configured to always be normal;
Storage means for overwriting and storing each time a judgment state of normality or life of the battery determined by the battery determination means is determined;
When the connection between the battery and the lighting circuit is released when the power failure is released, the normal state or life determination state of the battery is read from the storage means, and when the battery is at the end of life, the display state is changed or a sound is generated. A notification means for performing notification that the life of the battery can be easily confirmed and the battery can be replaced;
An emergency lighting device comprising: An emergency lighting device according to claim 1;
A lighting device main body provided with the emergency lighting device;
An emergency lighting device comprising:

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