JPH10199312A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a lamp from being left on lighting and save energy by supplying the power source to the lamp from a storage battery when the power is not supplied from the external power source while monitoring whether or not the power source is supplied from the external power source and by turning on or off a power supply to the lamp when the output of a surrounding illuminance exceeds a threshold value through detection of the surrounding illuminance. SOLUTION: A user can easily carry out inspection work whether or not a lamp 1 turns on by supplying the power source from a storage battery 2 under the normal operation of a power supply monitoring circuit 3. When the storage battery 2 is discharged by the inspection work, the storage battery 2 can prevent its performance from deteriorating rather than continuous charge for a long time. In addition, when the detection output of a detection element 4 exceeds the threshold value as relatively lowering a value of surrounding illuminance, the power source is supplied from the external power source to the lamp 1 by turning on a transistor by a control circuit 5. It is therefore not necessary to manually turn on or off the lamp 1 as a conventional safety lamp device is done.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illuminating device having a storage battery charged by an external power supply and lighting a lamp by the power supply from the storage battery when the power supply from the external power supply is stopped.

[0002]

2. Description of the Related Art Conventionally, there is a lighting device that includes a storage battery that is charged by an external power supply, and turns on a lamp when the power supply from the external power supply stops. Such a lighting device is generally called a security light device because a lamp is turned on at the time of a power failure of a commercial power supply, and is embedded in a wall surface of a bedroom or the like. Note that a manual switch for turning on / off the lamp is usually provided so that the lamp can be used as illumination for illuminating the darkness (so-called night light) other than during a power failure.

[0003]

However, in the above-mentioned conventional example, the lamp is turned on / off by turning on / off the manual switch. Therefore, the lamp is turned on by forgetting to turn off the switch (forgetting to turn off the lamp). There is a problem that power is wasted and power is wasted.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a lighting device which can prevent forgetting to turn off a lamp and save energy.

[0005]

According to a first aspect of the present invention, there is provided an external power supply for monitoring a lamp, a storage battery charged by an external power supply, and the presence or absence of power supply from the external power supply. Power supply monitoring means for supplying power from the storage battery to the lamp when power is not supplied from the battery, ambient illuminance detection means for detecting ambient illuminance, and detection output by comparing the detection output of the ambient illuminance detection means with a threshold value And control means for turning on / off the power supply to the lamp when the ambient light exceeds a threshold value. When the ambient illuminance decreases, the control means starts the power supply to the lamp and the ambient illuminance. When the power becomes high, the power supply to the lamp is stopped by the control means, so that forgetting to turn off the lamp can be prevented and energy saving can be achieved.

According to a second aspect of the present invention, in the first aspect of the present invention, there is provided means for providing a hysteresis to a threshold value to be compared with a detection output of the ambient illuminance detection means, and the lamp is turned on by the hysteresis. It is possible to prevent the lamp from being repeatedly turned on / off by changing the threshold value between the time and the time of turning off the light. According to a third aspect of the present invention, in the first aspect of the present invention, a means is provided for dulling a change in the detection output of the ambient illuminance detection means. Lighting can be prevented.

According to a fourth aspect of the present invention, in the first aspect, the control means compares the detection output of the ambient illuminance detecting means with a threshold value and supplies power to the lamp when the ambient illuminance exceeds the threshold value. Means for forcibly stopping the function of turning on / off the lamp. By forcibly stopping the function of the control means, the lamp can be turned off when it is not necessary to turn on the lamp unlike when the user is absent. Lighting prevents power from being wasted.

According to a fifth aspect of the present invention, in the first aspect of the present invention, a commercial AC power supply is used as the external power supply, and rectifying means for half-wave rectifying the AC supplied from the external power supply to the lamp is provided. By supplying half-wave alternating current to the lamp, the lamp life can be prolonged.
According to a sixth aspect of the present invention, in the first aspect of the present invention, there is provided an inspection means for forcibly stopping a power supply from an external power supply and performing an inspection. It is possible to check whether or not the lamp is normally turned on at the time of the power failure.

A seventh aspect of the present invention is characterized in that, in any one of the first to sixth aspects, the apparatus main body is formed in a size that can be attached to a mounting frame of a large-sized continuous wiring device. The wiring frame can be shared with a mounting frame and the like, and can be easily arranged on a wall surface or the like.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments. FIG. 1 is a circuit diagram showing an embodiment of the present invention. A lamp 1 composed of a light bulb called a so-called search ball, a storage battery 2 charged by an external power supply (commercial AC power supply) not shown, and an external power supply A power supply monitoring circuit 3 for monitoring the presence or absence of power supply from the power supply and supplying power from the storage battery 2 to the lamp 1 when there is no power supply from the external power supply, and a detection element 4 comprising CdS and detecting ambient illuminance.
And a control circuit 5 for comparing the detection output of the detection element 4 with a threshold value and turning on / off the power supply to the lamp 1 when the detection output exceeds the threshold value. Although a NiCd (NiCd) battery is used as the storage battery 2 in the present embodiment, the type of the storage battery 2 is not the gist of the present invention and may be another type.

An external power supply terminal T ₁ , to which an external power supply is connected,
T is between ₂ and primary winding n ₁ of the transformer T of the step-down through the surge absorbing element ZNR is connected. Further, the secondary winding n ₂ of the transformer T is connected to the AC input terminal of the diode bridge DB via the switch SW.
Switching the switch SW, the common terminal c connected to the 2 end of winding n ₂ of the transformer T, a terminal a connected to the AC input terminal of the diode bridge DB, to the terminal b, separated from the circuit And constitutes inspection means described later.

A smoothing capacitor C ₀ , a Zener diode ZD, a lamp 1, a storage battery 2, a power supply monitoring circuit 3, a sensing element 4, and a control circuit 5 are connected in parallel between the DC output terminals of the diode bridge DB. Incidentally, the transformer T, a diode bridge DB, a smoothing capacitor C ₀ and a Zener diode ZD, a power supply circuit 6 for converting an AC voltage of the external power supply a relatively low DC constant voltage is formed.

The terminal a of the switch SW is connected to the
Through a series circuit of a rectifying means serving diode D ₁ and the transistor Q ₃ to the next side output (AC) half-wave rectification,
It is connected to the positive electrode of the storage battery 2. Lamp 1 is
One end is connected to the connection point between the collector of the cathode and the transistor Q ₃ of the diode D _1, the other end is connected to the negative pole of the battery 2 via the transistor Q _2.

The base of the transistor Q ₃ are via a resistor R ₁₂ is connected to the collector of the transistor Q _1, further emitter of the transistor Q ₁ is connected to the base of the transistor Q _2. The transistor Q ₁ is be one that is turned on / off by the power supply monitoring circuit 3 is turned on by the power supply monitoring circuit 3 when the power supply from the external power supply is stopped by a power failure or the like. And Thus, the transistor Q ₂ and the transistor Q If transistor Q ₁ is turned on
_Since both the lamps ₃ are turned on, a closed loop including the lamp 1 and the storage battery 2 is formed, and the lamp 1 is turned on by the power supply from the storage battery 2.

On the other hand, the power supply monitoring circuit 3 includes a transistor Q ₁
Based on the output end of which comprises an operational amplifier IC ₁ connected. The inverting input terminal and the non-inverting input terminal of the operational amplifier IC ₁ are connected to a connection point of voltage dividing resistors R ₈ and R ₉ for dividing the output voltage of the power supply circuit 6 and a voltage dividing resistor R _{4 for} dividing the battery voltage of the storage battery 2. They are respectively connected to the connection point of R _5.
Here, between the dividing resistors R ₈ divider resistor R ₄ diode D ₂ is inserted. Therefore, when power is supplied from an external power supply, the voltage level obtained by dividing the output voltage of the power supply circuit 6 by the voltage dividing resistors R ₈ and R ₉ is higher than the voltage of the storage battery by the voltage dividing resistors R ₄ and R ₅ . for the second battery voltage is higher than the divided voltage level, the output of the operational amplifier IC ₁ becomes the L level, the transistor Q ₁ is turned off. However, when the power supply from the external power supply is stopped due to a power failure or the like, the voltage level obtained by dividing the output voltage of the power supply circuit 6 by the voltage dividing resistors R ₈ and R ₉ becomes the voltage of the storage battery 2 by the voltage dividing resistors R ₄ and R ₅ . since lower than the voltage level obtained by dividing the battery voltage divided output of the operational amplifier IC ₁ 'inverted from L level to H level, the transistor Q ₁ is turned on. As a result, the transistors Q ₂ and Q ₃ are turned on to form a closed loop, and the lamp 1 is turned on by the power supply from the storage battery 2.

In the present embodiment, the control circuit 5 compares the detection output of the detection element 4 with a threshold, and when the detection output exceeds the threshold, the transistor Q
₂ is turned on / off to turn on / off the power supply to the lamp 1. The control circuit 5 is provided with an operational amplifier IC ₂ to end output to the base of the transistor Q ₂ is connected. The non-inverting input of the operational amplifier IC ₂ is connected to a connection point of the voltage dividing resistors R _4, R _5, electrolytic capacitor C ₃ in parallel with the dividing resistor R ₅ is connected. Further, the inverting input terminal, a connection point of the parallel-connected series circuits of the sensing element 4 and the resistor R ₂ to the output terminal of the power supply circuit 6 is, via a delay circuit 7 including the resistor R ₃ and a capacitor C ₂ connected Have been.

[0017] In Thus, Day and as at the time of lighting of the disposed luminaire on a ceiling, due to the low resistance value of the sensing element 4 when the ambient illuminance is relatively high, the inverting input of the operational amplifier IC ₂ The voltage level (detection output) at the terminal becomes higher than the voltage level (threshold) at the non-inverting input terminal obtained by dividing the battery voltage of the storage battery 2. Therefore, the transistor Q ₂ output of the operational amplifier IC ₂ becomes the L level is turned off, the lamp 1 is turned off.

On the other hand, when the ambient illuminance is relatively low, such as at night or when the lighting equipment is turned off, the voltage level at the inverting input terminal of the operational amplifier IC ₂ (detection output) because the resistance value of the detection element 4 is high. Becomes lower than the voltage level (threshold) of the non-inverting input terminal obtained by dividing the battery voltage of the storage battery 2. Therefore, the output of the operational amplifier IC ₂ is inverted from L level to H level, the transistor Q ₂ is turned on. As a result, the switch SW, a diode D ₁ from the secondary side of the transformer T, the lamp 1, the transistor Q ₂ and the diode bridge D
Is a closed loop formed of B, half-wave rectified pulsating voltage in the diode D ₁ is turned on is applied to the lamp 1. Also,
If the ambient illuminance increases and the voltage level (detection output) at the inverting input terminal of the operational amplifier IC ₂ becomes higher than the voltage level (threshold) at the non-inverting input terminal obtained by dividing the battery voltage of the storage battery 2, the operational amplifier IC 2 output ₂ is inverted from H level to L level, the lamp 1 is turned off transistor Q ₂ is turned off.

When the power supply from the external power supply is stopped as in the case of a power failure, the power supply from the storage battery 2 to the control circuit 5 is blocked by the diode D ₂ , so that the control circuit 5 does not function. , Lamp 1 regardless of the level of ambient illumination
Lights up. The above description of the operation is all for the case where the switch SW is connected to the terminal a, and such a state will be referred to as an automatic mode. Here, if the switch SW is switched to the terminal b side, it is disconnected from the external power supply on the secondary side of the transformer T, and it is possible to simulate a state in which the external power supply has stopped. This state is called an inspection mode. Thus, the switch SW
When the operation mode is switched to the inspection mode, the power supply monitoring circuit 3 operates normally and checks whether the lamp 1 is turned on by the power supply from the storage battery 2 by creating a state in which the external power supply is cut off in a pseudo manner. Therefore, there is an advantage that the user can easily perform the inspection work. Furthermore, when the storage battery 2 is discharged by the inspection work, there is an advantage that the performance of the storage battery 2 can be prevented from deteriorating as compared with the case where the storage battery 2 is continuously charged.

[0020] In this embodiment as described above, the external power source is turned on when the detection output of the detecting element 4 is surrounding illuminance is relatively low exceeds a threshold value, the control circuit 5 to the transistor Q ₂ Since power is supplied to the lamp 1 from the lamp, the trouble of manually turning on / off the lamp 1 as in the conventional security light device can be omitted, and at the same time, forgetting to turn off the lamp 1 can be prevented, and the lamp 1 can be wasted. Energy saving can be achieved by eliminating unnecessary lighting.

The lamp 1 is supplied with power from an external power supply.
When turning on the diode D ₁By half-wave rectification
The applied pulsating voltage is applied to the lamp 1.
Comparison when applying full-wave rectified pulsating voltage
As a result, the life of the lamp 1 can be extended. sand
That is, the lamp 1 is automatically turned on / off according to the ambient illuminance.
Configuration so that only during a power outage
Lamp 1 in one day compared to turning on lamp 1
Lighting time is much longer (for example, 12 hours
/ 1 day), which greatly shortens the life of the lamp 1.
The lamp 1 has to be replaced frequently
There is a risk. However, as described above, lamp 1
Applying half-wave rectified pulsating voltage, the life of lamp 1
Can be prevented from becoming extremely short.

Further, in this embodiment, by connecting the delay circuit 7 to the non-inverting input terminal of the operational amplifier IC ₂ included in the control circuit 5, the detection output of the detection element 4 is changed according to the instantaneous change of the ambient illuminance. Even in the case of a sudden change, such a sudden change in the detection output can be slowed down by the delay circuit 7. As a result, the lamp 1 is inadvertently turned on or repeatedly turned on and off in a situation that may occur on a daily basis, such as when the detection output of the detection element 4 is momentarily reduced due to the shadow of a person. Such a problem can be prevented.

In this embodiment, the output terminal of the operational amplifier IC ₂ of the control circuit 5 and the non-inverting input terminal are connected via a resistor R ₆ , so that the battery voltage of the storage battery 2 is divided. The voltage level (threshold) at the inverting input terminal has hysteresis. That is, when the lamp 1 is turned on due to a decrease in ambient illuminance, the detected output of the detection element 4 exceeds the threshold value and the lamp 1 is turned off by the brightness of the turned on lamp 1, and the lamp 1 is turned on. There is a possibility that flickering may occur due to repetition of turning off the light.
However, in this embodiment, the operational amplifier IC
₂ changes to H level once, the voltage dividing resistors R ₄ , R ₄
The voltage level (threshold) at the connection point of No. ₅ rises, and the above-mentioned problems can be prevented from occurring.

Next, the structure of this embodiment will be described with reference to FIGS. The apparatus main body 10 of the present embodiment includes:
It is assembled with a body 10a made of synthetic resin and a cover 10b, and its dimensions are such that it can be attached to two mounting frames 40 of a large-sized continuous wiring device standardized in JIS C8375 or the like. .

The body 10a is formed in a substantially box shape.
At its bottom, printed boards 11 to 13 on which electronic components and the like constituting each circuit described above are mounted are fixed by fixing screws 15, and a battery chamber 21 in which the storage battery 2 is stored is provided. The sensing element 4 is provided on the printed circuit board 11,
A switch SW composed of a slide switch, a transformer T and the like are mounted, and are connected to the printed circuit board 12 by a flat cable 16. On the other hand, this printed circuit board 12
Are mounted with a pair of lamp receivers 17a and 17b, a battery socket 18 to which a connector 2a provided on the storage battery 2 is detachably connected. Furthermore, the transformer T 1
On the printed circuit board 13 to which the secondary lead wire 19 is connected,
A conventionally well-known quick-connecting terminal block 14 including a not-shown locking spring, a terminal plate, a release button, and the like is mounted.
Wire insertion hole (not shown) of this quick connection terminal block 14
Is exposed to the outside through an exposure hole 20 provided in the bottom of the body 10a, and an electric wire for connection to an external power supply can be inserted. The switch SW mounted on the printed circuit board 11 is a slide switch,
A switch handle 22 is attached for easy operation.

On the other hand, the cover 10b has a recess 23 formed on the front surface, and a flange 24 protrudes from a pair of opposite side surfaces. An assembly claw 25a is formed at a tip portion of each of the plurality of assembly pieces 25 erected on the back side of the cover 10b.
The body 10a and the cover 10b are assembled by being engaged with the peripheral edge of the assembly hole 26 formed on the side surface of the body a. Further, two pairs of locking claws 27 project from the side surfaces of the flange portion 24, respectively.
These locking claws 2 are inserted into locking holes 41a provided in
By locking 7, it can be attached to the mounting frame 40 in the same manner as a large-sized continuous wiring device such as a switch or an outlet. A pair of mounting portions 28 for mounting on a metal mounting frame is provided on each side surface portion where the flange portion 24 protrudes.

An opening 29 communicating with the battery chamber 21, a fitting hole 30 into which the battery socket 18 mounted on the printed circuit board 12 fits, and a base portion of the lamp 1 are provided at the bottom of the recess 23. And a lamp mounting part 31 which is inserted and held detachably. Body 10a and cover 1
The battery 2 is stored in the battery chamber 21 through the opening 29 in a state where the battery 2 has been assembled, and the connector 2 a is connected to the battery socket 18 fitted in the fitting hole 30.
Here, a pressing piece 32 for pressing the storage battery 2 is provided from the side surface of the opening 29, so that the storage battery 2 stored in the battery chamber 21 is prevented from jumping out and rattling.

By the way, a rectangular switch hole 33 through which the switch handle 22 is slidably exposed is provided in a portion other than the recess 23 of the cover 10b.
, The switch handle 22 can be operated from the front side. A circular through-hole 34 for allowing the light-receiving surface of the sensing element 4 to face the outside is also provided with the cover 1.
0b is provided in a portion other than the concave portion 23. However, a sensing element cover 36 made of a light-transmitting material is attached to the through hole 34 to protect the sensing element 4. Further, on the back side of a portion other than the recessed portion 23 of the cover 10b, a holding rib 35 which abuts on the transformer T and prevents rattling is provided upright. The reflector 37 and the shade 38 are attached to the front surface of the recess 23 of the cover 10b.

The present embodiment has the above-described structure. When the apparatus main body 10 is mounted on a mounting frame 40 attached to a wall or the like, the wall is formed in the same manner as a general large-sized continuous wiring device. And the like. Thus, the switch SW
Can be operated from the front side of the apparatus main body 10 so that the switching between the automatic mode and the inspection mode described above can be easily performed even when the apparatus main body 10 is embedded. is there. Note that a rectangular frame-shaped decorative cover 43 is detachably attached to the front surface of the mounting frame 40. That is, the locking pieces 43 a projecting from the four corners on the rear side of the decorative cover 43 are provided with the locking portions 40 a provided on the mounting frame 40.
It is detachably locked to the.

FIG. 4 is a circuit diagram according to another embodiment of the present invention. In this embodiment, the switch S
W through a diode D ₃ between the AC input ends of the terminal a and the diode bridge DB of is characterized in that provided another terminal d, the circuit embodiment circuit configuration other than it's shown in FIG. 1 It is completely common with the configuration. Therefore, in the following, common portions are denoted by the same reference numerals, description thereof will be omitted, and only the above characteristic portions will be described.

In this embodiment, by switching the switch SW to the terminal d, the power supply circuit 6 is switched from an external power supply.
While maintaining the power supply to, by the diode D ₃ can be cut off only the power supply path from the external power supply to the lamp 1. That is, it is possible be transistor Q ₂ is turned on by the control circuit 5 to decrease ambient luminance, since the power supply to the lamp 1 is not performed, to have the lamp 1 is turned off at all times. In other words, the switch SW causes the control circuit 5 to compare the detection output of the detection element 4 with the threshold value, and determine if the ambient illuminance exceeds the threshold value.
The function of turning on / off the power supply to the power supply is forcibly stopped, and when it is not necessary to turn on the lamp 1 unlike when the user is absent, the lamp 1 is turned on due to a decrease in the ambient illuminance and the power is reduced. There is an advantage that wasteful consumption can be prevented.

[0032]

According to the first aspect of the present invention, a lamp, a storage battery charged by an external power supply, and the presence or absence of power supply from the external power supply are monitored, and when there is no power supply from the external power supply, the storage battery is switched to the lamp. A power supply monitoring means for supplying power, an ambient illuminance detecting means for detecting ambient illuminance, and comparing a detection output of the ambient illuminance detection means with a threshold value, and supplying power to the lamp when the detection output exceeds the threshold value Control means for turning on / off the supply, so that when the ambient illuminance decreases, the control means starts power supply to the lamp,
When the ambient illuminance increases, power supply to the lamp is stopped by the control means, so that it is possible to prevent forgetting to turn off the lamp and save energy.

According to the second aspect of the present invention, since the threshold value to be compared with the detection output of the ambient illuminance detection means is provided with a hysteresis, the threshold value is determined by the hysteresis when the lamp is turned on and when the lamp is turned off. In other words, there is an effect that the lamp can be prevented from being repeatedly turned on / off.
According to the third aspect of the present invention, there is provided means for dulling the change in the detection output of the ambient illuminance detection means, so that it is possible to prevent the lamp from being inadvertently turned on in response to a momentary change in the ambient illuminance. There is.

According to a fourth aspect of the present invention, the control means has a function of comparing the detection output of the ambient illuminance detection means with a threshold value and turning on / off the power supply to the lamp when the ambient illuminance exceeds the threshold value. Since a means for forcibly stopping is provided, by forcibly stopping the function of the control means, the lamp is turned on when the lamp does not need to be turned on unlike when the user is absent, and power is wasted. This has the effect that it can be prevented.

According to a fifth aspect of the present invention, a commercial AC power supply is used as an external power supply, and a rectifying means for half-wave rectifying the AC supplied from the external power supply to the lamp is provided. This has the effect of extending the lamp life. The invention of claim 6 is
Inspection means for forcibly stopping the power supply from the external power supply and performing inspections are provided, so that the inspection means can check whether the lamp is normally lit at the time of a power failure without actually causing a power failure. There is an effect that can be.

According to the seventh aspect of the present invention, since the main body of the apparatus is formed in a size that can be attached to the mounting frame of the large-sized continuous wiring device, the mounting frame and the like can be shared with the large-sized continuous wiring device and the wall surface and the like can be shared. There is an effect that the arrangement can be easily performed.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view with a part omitted from the above.

FIG. 3 is an exploded perspective view of the same.

FIG. 4 is a circuit diagram showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lamp 2 Storage battery 3 Power supply monitoring circuit 4 Detecting element 5 Control circuit 6 Power supply circuit 7 Delay circuit

Claims (7)

[Claims] 1. A power supply monitor for monitoring a lamp, a storage battery charged by an external power supply, and the presence or absence of power supply from the external power supply, and supplying power from the storage battery to the lamp when there is no power supply from the external power supply. Means, ambient illuminance detecting means for detecting ambient illuminance, and control for turning on / off the power supply to the lamp when the detected output of the ambient illuminance detecting means exceeds a threshold value And a lighting device. 2. A lighting device according to claim 1, further comprising means for giving a hysteresis to a threshold value to be compared with a detection output of the surrounding illuminance detecting means. 3. The lighting device according to claim 1, further comprising: means for dulling a change in the detection output of the ambient illuminance detection means. 4. A control means for comparing a detection output of the ambient illuminance detection means with a threshold value and forcibly stopping a function of turning on / off the power supply to the lamp when the ambient illuminance exceeds the threshold value. 2. The lighting device according to claim 1, further comprising means. 5. The lighting device according to claim 1, wherein a commercial AC power supply is used as the external power supply, and rectifying means for half-wave rectifying AC supplied from the external power supply to the lamp is provided. 6. The lighting device according to claim 1, further comprising inspection means for forcibly stopping power supply from an external power supply and performing inspection. 7. The lighting device according to claim 1, wherein the main body of the lighting device is formed in a size that can be mounted on a mounting frame of a large-sized continuous wiring device.