JPH10228811A - Battery powered light equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery powered light equipment to apply illumination light to an object with a storage battery as an electric power source, in which an alarm is given and power supply is cut off by detecting that a terminal voltage of a battery has dropped a specific level or less. SOLUTION: This equipment is equipped between a storage battery 1 and an illuminating lamp 3, with detecting means 18, 19, 20 to output a signal by detecting that an output voltage has dropped down to a specific voltage predetermined in advance or less and, alarm means 21, 22a, 23, 23' to activate alarms 24, 16 by inputting the detected signal and an alarm interrupting device 15 with interrupting means 21, 22b, 25 to interrupt a power supply circuit to the illuminating lamp 3 after a specific time predetermined in advance by inputting the detected signal. While providing the alarm 16 which is activated by inputting the detected signal from the detecting means in the alarm interrupting device 15, a flashing circuit 17 to activate the alarm 16 intermittently is provided in the illuminating lamp 3. Thereby, an end of discharge in a storage battery 1 can be predicted and a new storage battery 1 can be replaced by an appropriate timing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery light device for illuminating a subject with a storage battery as a power source at a site where an image is taken by, for example, a camera or a television camera. The present invention relates to a battery light device that can detect a decrease and issue an alarm and can cut off power supply after a predetermined time.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional battery light device of this type includes a storage battery 1 such as a secondary battery for supplying power, a cable 2 for transmitting power from the storage battery 1, and a cable 2 for transmitting power from the storage battery 1. And an illuminating lamp 3 that emits illuminating light by the electric power transmitted in 2. In FIG. 4, the storage battery 1 uses, for example, two (4a, 4b) nickel-cadmium battery packs of 12V, and connects the contact pins 6a, 6b of the battery cords 5a, 5b to the female contacts 8a, 8b of the connection box 7. Respectively, so that the two nickel-cadmium battery packs 4a and 4b are connected in series and used as 24V. In addition, by connecting a connector 9 provided at a base end of the cable 2 to a socket 10 of the connection box 7, power is supplied to the illumination lamp 3. The illuminating lamp 3 includes, for example, an incandescent lamp of 100 to 150 W inside, and emits illumination light by turning on and off the lighting switch 11.

In the above battery light device, 2
Although the nickel-cadmium battery packs 4a and 4b are connected in series and used as a 24V power supply, the voltages of the two batteries may become unbalanced as the use time elapses. Here, each of the nickel-cadmium battery packs 4a and 4b is a unit cell 1 having a rated voltage of 1.2V.
The voltage is gradually reduced at the time of discharging, but is relatively slow up to 1.1 V, and rapidly drops below that. In this case, for example, when the battery is further discharged to 1.0 V or less, a unit cell having a voltage of zero appears, and from that moment, the unit cell is charged in the opposite direction by the discharge current of another battery, and the unit cell is destroyed. It will be. That is, the storage battery 1 cannot be reused after being discharged to a predetermined voltage or less.

[0004]

However, in such a conventional battery light device, when the output voltage from the storage battery 1 falls below a predetermined voltage, an alarm is issued, and the detection is performed. No measures have been taken to cut off the power supply circuit to the lamp by inputting a signal. Therefore, the illumination light suddenly becomes dark during photographing using the illumination lamp 3, and sometimes a good image cannot be photographed or photographing becomes impossible. Then, only after reaching such a state, the storage battery 1
Was replaced with a new one. In this case, even if it is necessary to continue shooting, the storage battery 1 has to be replaced, and a decisive moment may be missed, for example, in the case of on-site shooting or news coverage. In addition, the storage battery 1 may be in a state of being excessively discharged, and the battery may be damaged, and may not be used again even if recharged. Therefore, a new battery had to be purchased, which was uneconomical.

In view of the above, the present invention addresses such a problem, detects that the terminal voltage of the storage battery has dropped below a predetermined voltage over time, issues an alarm, and shuts off power supply after a predetermined time. It is an object of the present invention to provide a battery light device capable of performing the above.

[0006]

In order to achieve the above object, a battery light device according to the present invention comprises a storage battery for supplying power, a cable for transmitting power from the storage battery, and a power supply for transmitting the power from the cable. A lighting device that emits illuminating light according to the following. In the battery light device, between the storage battery and the lighting lamp, it is detected that the output voltage from the storage battery has dropped below a predetermined voltage, and the signal thereof is detected. A detection means for outputting a detection signal, an alarm means for inputting a detection signal from the detection means to operate an alarm device, and a detection signal from the detection means for inputting a detection signal from the detection means and outputting power to the illumination lamp after a predetermined time. An alarm shut-off device having a shut-off means for shutting off a supply circuit of the alarm circuit, wherein the illuminating lamp includes an alarm which operates by inputting a detection signal from a detecting means in the alarm shut-off device. With kicking, it is provided with a flushing circuit for intermittently operating the alarm.

[0007] The alarm device may generate light, sound, or vibration as alarm information.

Further, the operation of the alarm device may be turned on by inputting a detection signal from the detection means and inverting the polarity of a power supply circuit to the illumination lamp.

Further, the predetermined time for shutting off the power supply circuit to the illumination lamp may be arbitrarily adjustable.

[0010] The alarm cutoff device may be provided in either the storage battery or the lighting.

[0011]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an external perspective view showing an embodiment of a battery light device according to the present invention. This battery light device is a lighting device that illuminates an object with a storage battery as a power source at a site where an image is taken by, for example, a camera or a television camera. As shown in FIG. And further, an alarm cutoff device 15 described below, an alarm device 16,
And a flushing circuit 17.

The storage battery 1 supplies power to the illumination lamp 3 and uses, for example, two (4a, 4b) nickel-cadmium battery packs of 12V and a battery cord 5
a, 5b contact pins 6a, 6b are connected to connection box 7
The two nickel-cadmium battery packs 4 are inserted into the female contacts 8a and 8b, respectively.
a and 4b are connected in series and used as 24V. Each of the nickel-cadmium battery packs 4a and 4b is configured by connecting ten unit cells having a rated voltage of 1.2 V in series.

The cable 2 transmits electric power from the storage battery 1 to the lighting lamp 3, and is, for example, a conventional two-core cable having a distal end connected to the lighting lamp 3 and a base end. Is connected to the socket 10 of the connection box 7 to supply power to the illuminating lamp 3.

The illuminating lamp 3 emits illuminating light by the electric power transmitted through the cable 2 to illuminate the subject, and has, for example, an incandescent lamp 12 (see FIG. 2) of 100 to 150 W inside. By turning on and off the lighting switch 11, illumination light is generated.

Here, in the present invention, as shown in FIG.
The illumination lamp 3 is provided with an alarm 16 and a flashing circuit 17.

The alarm cutoff device 15 detects that the output voltage from the storage battery 1 has dropped below a predetermined voltage, operates the alarm using the detection signal, and
A circuit for supplying power to the illuminating lamp 3 is cut off after a predetermined time set in advance using the detection signal. The internal circuit is configured as shown in FIG. That is, the constant voltage circuit 18, the variable voltage circuit 19, and the voltage comparison circuit 20 constitute detection means for detecting that the output voltage from the storage battery 1 has fallen below a predetermined voltage and outputting the signal. The control thyristor 21, the first relay 22a, and the changeover switches 23 and 23 'attached to the control thyristor 21 serve as alarm means for inputting a detection signal from the detection means to operate the alarm 24 and the alarm 16 described later. Further, the control thyristor 21, the second relay 22b having a predetermined delay time set therein, and the cutoff switch 25 attached to the control thyristor 21 input a detection signal from the detection means, and after a predetermined time, the detection signal is inputted. It constitutes a blocking means for blocking a circuit for supplying electric power to the illumination lamp 3.

The constant voltage circuit 18 provides a reference voltage for detecting a decrease in output voltage from the storage battery 1, and is composed of, for example, a Zener diode. The fluctuating voltage circuit 19 provides a threshold value for detecting fluctuation of the output voltage of the storage battery 1, and is composed of, for example, a potentiometer that can adjust the voltage. Further, the voltage comparison circuit 20 receives and compares the reference voltage V ₁ of the constant voltage circuit 18 and the detection voltage V ₂ of the variable voltage circuit 19, and detects that the detection voltage V ₂ has decreased, and compares the voltage. and outputs a signal S _1, for example, a comparator for the IC, and this non-inverting input of the comparator for IC (+ side) to the constant voltage circuit 18
Of the reference voltage V ₁ is entered, the inverting input - the detection voltage V ₂ of the variable voltage circuit 19 (the side) is adapted to enter.

The reference voltage V ₁ is given, for example, 12 V by a Zener diode (18), and the detection voltage V ₂
It is arbitrarily set so that the voltage comparator circuit 20 outputs a comparison signals S ₁ when it is the output voltage V _0, for example 20~22V from the battery 1 to adjust the potentiometer (19). With such a circuit of the detecting means, a slight voltage change of 0.1 V or less with respect to the set voltage can be accurately detected.

The control thyristor 21 receives the comparison signal S ₁ output from the voltage comparison circuit 20 via a resistor R ₁ , and when its gate G is triggered, conducts and connects to the anode A side. The first relay 22a is turned on. The first relay 22a is turned on by the conduction of the control thyristor 21 and simultaneously switches the changeover switches 23 and 23 'attached thereto to invert the polarity of the power supply circuit to the illumination lamp 3. is there. That is, in the normal state, the changeover switch 23 is located on the contact a side and is connected to the + side of the storage battery 1, and the changeover switch 23 'is located on the contact c side and is connected to the-side of the storage battery 1. . When the first relay 22a is turned on and operated, the changeover switch 23 switches to the contact b side and is connected to the minus side of the storage battery 1, and the changeover switch 2
3 'switches to the contact d side and is connected to the + side of the storage battery 1. Thereby, the direction of the current supplied to the illumination lamp 3 is reversed. The resistor R ₁ and capacitor C ₁ which is inserted into the gate G of the control thyristor 21 constitute a low pass filter for preventing malfunction due to noise.

The alarm 24 operates by inverting the direction of the current by switching the changeover switches 23 and 23 'to generate an alarm, and is composed of, for example, a light emitting diode (LED). At this time, when the polarity of the voltage applied to the both ends of the diode 26 connected to the alarm device 24 is reversed, the diode 26 conducts and current flows, and an alarm is issued by light or the like. That is, when the first relay 22a is turned on and the changeover switches 23 and 23 'are simultaneously switched to reverse the polarity of the voltage, the diode 26 conducts and current flows through the alarm 24, and the alarm 24 lights. .

The second relay 22b is turned on by the conduction of the control thyristor 21 and switches a cut-off switch 25 attached thereto to cut off a power supply circuit to the illuminating lamp 3. Although connected in parallel with one relay 22a, it is a delay relay that operates after a predetermined delay time (for example, 3 to 5 minutes) even if it is turned on at the same time as the first relay 22a. This second relay 22b
For example, a delay time of, for example, 0 to 5 minutes can be arbitrarily set, and is automatically reset without a voltage. When the second relay 22b operates,
The cutoff switch 25 is opened to cut off the power supply circuit for the illumination lamp 3 connected to the break contact e. Thereby, the illumination lamp 3 is turned off.

The alarm cut-off device 15 thus configured
Is provided, for example, inside the connection box 7 in FIG. The alarm 24 is provided on the storage battery 1 side, for example, on the upper surface of the connection box 7.

Next, an alarm device 16 provided in the illumination lamp 3
Operates at the same time as the turning on of the alarm 24 provided on the upper surface of the connection box 7 on the storage battery 1 side, and the terminal voltage of the storage battery 1 falls below a predetermined voltage to the person using the illumination lamp 3. , For example, a light emitting diode (LED). As shown in FIG. 3, the alarm device 16 is connected to the changeover switches 23 and 23 'in the alarm cutoff device 15 via the cable 2,
The operation is controlled by the control thyristor 21 and the first relay 22a.
Is exactly the same as the alarm 24 controlled by In FIG. 3, reference numeral 26 'denotes the alarm 24
Similarly to the diode 26 connected to, a diode which turns on and turns on the alarm 16 when the polarity of the voltage applied to both ends thereof is reversed is shown. The alarm 16 is provided, for example, on the back side of the grip 27 on the side of the illumination lamp 3 in FIG.

The operation of the alarms 24 and 16 is as follows.
Since the detection signal (comparison signal S ₁ ) from the detection means is input and the polarity of the power supply circuit to the illumination lamp 3 is inverted to turn on the power, the detection signal is output to the illumination lamp 3 as an alarm. Without the need for a special signal line to send to the
It is only necessary to connect the conventional power transmission cable 2 to the storage battery 1 via the alarm cutoff device 15. Therefore, the cable 2, the connector 9, and the socket 10 used in the conventional battery light device can be used as they are.

The flashing circuit 17 provided in the lamp 3 is for intermittently operating the alarm 16 on the lamp 3 side. The flashing circuit 17 is, for example, a single integrated circuit (IC). In order to make the operation of the alarm device 16 noticeable, for example, the light emission is made to blink. The alarm 16 is connected to a part of the flushing circuit 17.

Next, the thus configured battery
The use and operation of the light source device will be described. First, FIG.
, The battery cords 5a and 5b of the storage battery 1
Connect the contact pins 6a and 6b to the female contour of the connection box 7.
For example, by inserting into each of the objects 8a and 8b, for example,
Connect two nickel-cadmium battery packs 4a and 4b
It is assumed that they are connected in columns and used as 24V. And ke
To insert the connector 9 of the cable 2 into the socket 10
Thus, the illumination lamp 3 is connected to the storage battery 1. At this time,
At the time of car shipment or user's first use, FIG.
At reference voltage V ₁As a Zener diode (18)
For example, 12 V is applied, and the detection voltage V_TwoIs a potenti
The output voltage V from the storage battery 1 is adjusted by adjusting the
₀When the voltage becomes, for example, 20 to 22 V
0 is the comparison signal S₁Arbitrarily set to output
You.

In this state, for example, when photographing a subject at the site, the lighting switch 11 shown in FIGS. 1 and 3 is turned on to supply electric power from the storage battery 1 to the illuminating lamp 3 so that the illuminating lamp 3 emits light. Hold the illumination light 27 toward the subject. With this use, the output voltage V ₀ of the storage battery 1 gradually decreases. However, even if the reference voltage V ₁ input to the voltage comparison circuit 20 is slightly lower than the detection voltage V ₂ , the detection voltage of the storage battery 1 is smaller than the point where the detection voltage V ₂ becomes equal. When V ₂ decreases, the output voltage of the voltage comparator circuit 20 is rapidly transitions from the low level to the high level, the comparison signal S ₁ is output. The output comparison signal S ₁ is input to the control thyristor 21 of the alarm unit via the resistor R ₁ .

[0028] When the comparison signals S ₁ to the gate G of the control thyristor 21 is inputted, the gate G is conductive is triggered to turn on the first and second relay 22a which is connected to the anode A, 22b simultaneously . Then, the first relay 22a is connected to the changeover switch 2 attached thereto.
3, 23 'are simultaneously switched to invert the polarity of the power supply circuit to the illumination lamp 3. That is, one changeover switch 23 switches from the contact a to the contact b and is connected to the minus side of the storage battery 1, and the other changeover switch 23 ′ switches from the contact c to the contact d and changes the + of the storage battery 1. Connected to the side. Thereby, the direction of the current supplied to the lighting lamp 3 is inverted, and the polarity of the voltage applied to the alarm 24 on the storage battery 1 side and the alarm 16 on the lighting lamp 3 side is inverted.

Accordingly, the polarity of the voltage applied to both ends of the diodes 26 and 26 'connected to the alarms 24 and 16 is inverted, the diodes 26 and 26' conduct, and the current flows. , 16 give an alarm by light or the like. At this time, since the flashing circuit 17 is connected to the alarm 16 on the side of the illumination lamp 3, the drive signal is turned on and off at a predetermined time constant set by the operation thereof, and the alarm 16 is Flashes and emits light to alert the user.
The illuminating lamp 3 is instantaneously extinguished due to the reversal of the direction of the current, but the illuminating light does not significantly change because it is instantaneously switched and the filament of the bulb has a heat capacity. As a result, the user can know that the terminal voltage of the storage battery 1 has dropped below the predetermined voltage by watching the lighting of the alarm 24 or 16. Then, it is possible to measure an appropriate timing for the replacement time of the storage battery 1.

On the other hand, since the second relay 22b is a delay relay, it actually operates after a predetermined delay time even if it is turned on simultaneously with the first relay 22a. Then
The second relay 22b opens the break contact e by switching the cutoff switch 25 attached to the first relay 22a, for example, 3 to 5 minutes after the first relay 22a is turned on.
To shut off the power supply circuit. As a result, power is not supplied from the storage battery 1 to the lighting lamp 3, and the lighting lamp 3 is turned off. At this time, the alarm 16 on the side of the illumination lamp 3 is turned off at the same time, but the alarm 24 on the side of the storage battery 1 remains lit.
It indicates that the alarm means is in the hold state.

In such a state, the user connects the connector 9 of the cable 2 in FIG.
Remove from Then, the storage battery 1 whose output voltage has dropped is replaced with a new storage battery 1, and the socket 1 of the new storage battery 1 is replaced.
0 and the connector 9 of the cable 2 is inserted and connected. As a result, the battery light device is used again.
At this time, in FIG. 3, the control thyristor 21 has a characteristic that once turned on, it does not reset unless the anode voltage is turned off. Maintain the hold state unless it is replaced. In this case, when the storage battery 1 is removed for replacement of the storage battery 1, the circuit becomes zero voltage and is automatically reset.

The alarm cut-off device 15 shown in FIG. 3 functions with the basic configuration and operation as described above, but further details will be described below. First, when the illuminating lamp 3 is a tungsten lamp, the filament resistance at the time of extinguishing is extremely low due to the low temperature, and at the moment of the next lighting, a current close to a short-circuit state flows and the voltage of the battery is greatly reduced for a moment. . Due to this phenomenon, when trying to increase the detection sensitivity of the voltage comparison circuit 20,
The spike portion is detected and malfunctions. In order to solve this condition, in this embodiment, the switching diode 28 and the large-capacity capacitor 2 are connected to the voltage comparing circuit 20 as the detecting means in the alarm cutoff device 15.
9 is added. The operation is such that when the voltage on the storage battery 1 side drops momentarily, the switching diode 2
8 is reverse biased, and the storage battery 1 and the alarm cutoff device 1
5 is cut off. However, since the large-capacity capacitor 29 is connected to the voltage comparison circuit 20, the circuit voltage during this period is held and does not affect the operation. In the actual measurement example, a spike voltage of several volts or more was sometimes generated. However, the operation of the voltage comparison circuit 20 was not affected at all, and the detection sensitivity of the voltage comparison circuit 20 was maintained at about 0.1 V. Can be.

When the large-capacity capacitor 29 for holding is added to the voltage comparison circuit 20 in this way, even if the storage battery 1 is replaced after the alarm cutoff device 15 operates, the circuit is in a hold state for a considerable time, and the voltage comparison circuit 20 In addition, the second relay 22b may be reset by the control thyristor 21, which may hinder replacement of the storage battery 1. In order to avoid this, it is necessary to discharge the voltage of the alarm cutoff device 15 promptly. However, in this embodiment, a discharge circuit is not particularly provided, and a circuit between the switching diode 28 and the large-capacity capacitor 29 is provided. Site A
Between the control thyristor 21 and the first relay 22
By connecting a circuit consisting of a and the second relay 22b, the circuit also functions as a discharge circuit. In this circuit, before operation, the control thyristor 21 is in an open state and has no effect, but the control thyristor 21 has no effect.
Is turned on, the first and second relays 22a, 22b
An electric current flows through the coil and serves also as a discharge circuit. As a result, as an example of the actually measured value, the reset state can be achieved in 10 to 15 seconds.

At this time, if the storage battery 1 is replaced in a completely reset state, the control thyristor 21 may be triggered. This is because the output of the voltage comparison circuit 20 momentarily becomes high level in a transient state and a trigger is activated. In this embodiment, in order to prevent this, a capacitor 3 is provided between the inverting input section (− side) for applying the detection voltage V ₂ to the voltage comparison circuit 20 and the + side power supply.
0 is added. Thereby, during the transitional state in which the alarm cutoff device 15 is started, the voltage of the inverting input section (− side) is pulled up to a positive voltage, and the output of the voltage comparison circuit 20 is pulled down to a negative voltage, thereby controlling. The thyristor 21 is not triggered.

Although the alarms 24 and 16 have been described as LEDs, the present invention is not limited to this, and ordinary alarm lamps may be used. Further, the present invention is not limited to a device that emits alarm information by light, but may be a unit that emits alarm information by voice or a unit that emits alarm information by vibration.

Further, in the above description, the alarm shutoff device 1
5 is provided on the storage battery 1 side, but is not limited thereto, and may be provided on the illumination lamp 3 side. In this case, the circuit part of the alarm cutoff device 15 shown in FIG. 3 may be inserted as it is on the path for supplying power from the cable 2 to the lighting lamp 3. Also in this case, the cable 2 can use a conventional two-core cable. In this case, since the alarm cutoff device 15 is provided at the subsequent stage of the cable 2, the operation of the alarm devices 24 and 16 is turned on by intentionally reversing the polarity of the power supply circuit to the illumination lamp 3. There is no need to make it happen. Therefore, the changeover switches 23 and 23 'in FIG. 3 and their contacts a, b, c,
d, and this part is directly connected, and the diodes 26, 2
An on / off switch may be provided in the portion 6 ', and these switches may be turned on by the first relay 22a.

Further, in FIG. 1, the illuminating lamp 3 is of a hand-held type, but may be of a stand type or a fixed type. Further, the battery light device is not limited to a device used at a site where an image is taken with a camera or a television camera, but can be used at any lighting site such as stage lighting or construction site lighting.

[0038]

The present invention has been configured as described above.
Detecting means for detecting that the output voltage from the storage battery has dropped below a predetermined voltage and outputting a signal between the storage battery and the lighting, and inputting a detection signal from the detection means; An alarm shut-off device having alarm means for operating an alarm device and shut-off means for shutting off a circuit for supplying power to the illumination lamp after a predetermined time set by inputting a detection signal from the detection means, The illuminating lamp is provided with an alarm which operates by inputting a detection signal from a detection means in the alarm shutoff device, and a flashing circuit which operates the alarm intermittently is provided, so that the use time elapses. Accordingly, it is possible to detect that the terminal voltage of the storage battery has dropped below a predetermined voltage, to issue an alarm, and to cut off the power supply. At this time, the alarm device on the illumination lamp side operates intermittently and emits alarm information, so that the user can be alerted well. Therefore, the end of discharging of the storage battery can be predicted in advance, so that it is possible to replace the storage battery with a new storage battery at an appropriate timing. For example, it is possible to avoid a situation in which the illumination lamp is turned off unexpectedly during shooting. This eliminates the need for the user to always worry about the replacement time of the storage battery, and can reduce the psychological burden.

Further, as described above, it is possible to detect that the terminal voltage of the storage battery has dropped below a predetermined voltage as the usage time has elapsed, to issue an alarm, and to cut off the power supply. It can be prevented that the battery is destroyed and cannot be used again even when recharged. From this, economy can be improved.

[0040] Further, in the apparatus in which the operation of the alarm is turned on by inputting a detection signal from the detection means and inverting the polarity of a power supply circuit to the illuminating lamp, There is no need for a special signal line for sending to the alarm device on the side of the illumination lamp, and it is only necessary to connect a conventionally used power transmission cable to the storage battery via the alarm cutoff device. Therefore, the cables, connectors and sockets used in the conventional battery light device can be used as they are, and compatibility with the conventional device can be provided.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing an embodiment of a battery light device according to the present invention.

FIG. 2 is a front view showing an illumination lamp of the battery light device.

FIG. 3 is a circuit diagram showing an internal configuration of an alarm cutoff device and a flushing circuit.

FIG. 4 is an external perspective view showing a conventional battery light device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Storage battery 2 ... Cable 3 ... Illumination light 4a, 4b ... Nickel-cadmium battery pack 5a, 5b ... Battery cord 9 ... Connector 10 ... Socket 11 ... Lighting switch 15 ... Alarm cutoff device 16 ... Alarm device on the illumination light side 17 ... Flushing circuit 18 ... Constant voltage circuit 19 ... Variable voltage circuit 20 ... Voltage comparison circuit 21 ... Control thyristor 22a ... First relay 22b ... Second relay 23, 23 '... Changeover switch 24 ... Alarm 25 ... Cutoff switch 26 , 26 '... diodes a, b, c, d, e ... contact S ₁ ... comparison signal (detection signal)

Claims (5)

[Claims] 1. A battery light device comprising: a storage battery for supplying power; a cable for transmitting power from the storage battery; and an illuminating lamp that emits illumination light using the power transmitted by the cable. Detecting means for detecting that the output voltage from the storage battery has dropped below a predetermined voltage and outputting a signal between the storage lamp and an illuminating lamp; And an alarm shut-off device having an alarm shut-off device having an alarm unit for operating the lighting unit, and a shut-off unit for shutting off a power supply circuit to the illumination lamp after a predetermined time set by inputting a detection signal from the detection unit. Is provided with an alarm which operates by inputting a detection signal from a detection means in the alarm shutoff device, and a flashing circuit which operates the alarm intermittently. And battery light device. 2. The battery light device according to claim 1, wherein the alarm device generates light, sound, or vibration as alarm information. 3. The operation of the alarm device according to claim 1, wherein the detection signal is input from the detection means to turn on the power by inverting the polarity of a power supply circuit to the illumination lamp. Or the battery light device according to 2. 4. The battery light device according to claim 1, wherein a predetermined time during which the power supply circuit to the illumination lamp is shut off can be arbitrarily adjusted. 5. The battery light device according to claim 1, wherein the alarm cutoff device is provided in one of a storage battery and an illumination lamp.