JP4736360B2 - Lighting device and lighting system - Google Patents

Description

  The present invention relates to an illumination device and an illumination system that light a lamp with an emergency power source such as a secondary battery when an ordinary power source such as an emergency light fails.

  Emergency lighting devices such as guide lights and emergency lights are used to turn on (emergency lighting) the lamp with an emergency power source consisting of a secondary battery in the event of a power failure due to a fire or an earthquake. It is required by the Fire and Disaster Management Agency Notification and the Building Standards Law to regularly check whether it is normally performed.

  Usually, an emergency lighting device is provided with a switch for forcibly stopping the power supply from the utility power supply (commercial power supply) to the lamp to make a pseudo power outage. The secondary battery is inspected by operating the hanging strap and turning on the switch to supply electric power from the secondary battery and to turn on the lamp. Here, according to the provisions of the Fire and Disaster Management Agency and the Building Standard Law, the lamps are effectively lit up for 20 minutes or 60 minutes in the case of guide lights and 30 minutes in the case of emergency lights by supplying power from the secondary battery. Normally, the inspector must hang a weight on the drawstring, turn on the switch, and monitor whether the lamp can be effectively lit within the specified time. . Moreover, in general, guide lights and emergency lights are installed at multiple locations in a building, and it is necessary to look around each of these lighting devices one by one. Met.

  In view of this, various lighting devices that automate the inspection work have been proposed in order to save labor of the inspection work as described above (see, for example, Patent Document 1). FIG. 11 is a block diagram of the lighting device A disclosed in Patent Document 1. The lighting device A includes a secondary battery 1 serving as an emergency power source, a lamp 2 including an incandescent lamp and a discharge lamp, and a regular power source ( A check switch 3 that opens and closes a power supply path connected to the commercial power supply AC), and a power supply that is connected to the power supply path via the check switch 3 and steps down and stabilizes the alternating current supplied from the commercial power supply AC to obtain a desired direct current. The circuit unit 4, the charging unit 5 that charges the secondary battery 1 with the DC power output from the power circuit unit 4, and the lamp 2 is always turned on by power supply from the power circuit unit 4, and in an emergency (power failure At the time of power supply from the secondary battery 1, the lighting circuit unit 6 that lights the lamp 2, the switch element Q that opens and closes the power supply path from the secondary battery 1 to the lighting circuit unit 6, Detect power recovery and switch element It includes a control unit 9 that turns on and off Q and detects an abnormality such as secondary battery 1 and lamp 2 and an indicator lamp 15 for notifying abnormality detection, and is always supplied with power from commercial power supply AC. The lighting circuit unit 6 is charged and the secondary battery 1 is charged, and the lamp 2 that is an emergency lamp is turned on by supplying power from the secondary battery 1 when the commercial power source AC is blacked out.

  The control unit 9 includes a microcomputer having a timer function as a main component, a charge detection unit 10 that detects the presence or absence of a charging current flowing from the charging unit 5 to the secondary battery 1, and a voltage that detects the voltage of the secondary battery 1. The detection unit 11, the lighting detection unit 20 that measures the current (lamp current) flowing from the lighting circuit unit 6 to the lamp 2 to detect lighting / non-lighting of the lamp 2, and the detection results of the detection units 10, 11, 20 To a determination unit 13 for comprehensively determining abnormality of the secondary battery 1 and the lamp 2, and a storage unit 14 including a nonvolatile memory such as an EEPROM. Here, the control unit 9 inspects the secondary battery 1 by forcibly lighting the lamp 2 for a predetermined inspection time or more with the secondary battery 1 as a power source by the lighting circuit unit 6 in a state where the power supply path is cut off by the inspection switch 3. And a monitoring function for constantly monitoring the state of charge of the secondary battery 1. The indicator lamp 15 is composed of a light emitting diode and is driven by the determination unit 13 to emit light.

The lighting device A is an emergency lighting device such as a guide light or an emergency light. Generally, in a guide light, a cold cathode fluorescent lamp is mainly used as a light source, and in an emergency light, a hot cathode fluorescent lamp is mainly used as a light source. The In the above-described lighting device A, the lamp 2 is lit by the common lighting circuit unit 6 both when the commercial power source AC is energized and during a power failure. However, in the case of an emergency lamp using a hot cathode fluorescent lamp as the lamp 2, FIG. As shown in FIG. 4, a regular lighting circuit 6a that turns on the lamp 2 by receiving power from the commercial power supply AC, and a lighting circuit that turns on the lamp 2 by receiving power from the secondary battery 1 in an emergency (power failure). 6b is generally provided separately.
Japanese Patent Application Laid-Open No. 2004-119151 (page 2 to page 3, FIG. 1)

  By the way, in the lighting device A shown in FIG. 11, the lamp 2 is lit by the same lighting circuit section 6 in normal and emergency situations, so that only one lighting circuit section 6 is required. However, an emergency using a hot cathode fluorescent lamp is necessary. As shown in FIG. 12, the lighting device A such as a lamp includes two lighting circuit portions, that is, a regular lighting circuit portion 6a and an emergency lighting circuit portion 6b. Therefore, a lighting circuit is provided for each of the lighting circuit portions 6a and 6b. It is necessary to provide a lighting detection unit that detects lighting or non-lighting of the lamp 2 by measuring the current flowing from the units 6a and 6b to the lamp 2.

  However, if the lamp characteristics of the lamp 2 (lamp voltage or lamp current) are directly detected in the state where the lamp 2 is lit by the emergency lighting circuit unit 6b to determine whether the lamp 2 is lit or not lit, A problem occurs. That is, when an impedance element for measuring lamp characteristics is added in the middle of the electric circuit from the emergency lighting circuit unit 6b to the lamp 2, the lamp-side impedance of the normal lighting circuit unit 6a changes, and lighting by the normal lighting circuit unit 6a is performed. There is a possibility of affecting the characteristics. In some cases, even when the lamp 2 is normally lit when energized, the lighting detection unit 8 may erroneously detect an abnormality in the lamp 2 and the lamp 2 may become inconspicuous. was there. Also, suppose that an impedance element for measuring lamp characteristics is provided in the electric circuit between the emergency lighting circuit section 6b and the switching circuit section 7, and a detection circuit section (not shown) detects the lamp state from the output of the impedance element. Even in this case, the emergency lighting circuit portion 6b often employs an insulating push-pull inverter. Therefore, if the detection circuit portion and the lamp 2 are not electrically insulated, the regular lighting circuit portion is also used. Although the lamp-side impedance of 6a is changed and the lamp 2 is normally lit, there is a possibility that the lighting detection unit 8 erroneously detects the abnormality of the lamp 2.

  The time for the emergency lighting circuit 6b to actually light the lamp 2 is very short compared to the time for the regular lighting circuit 6a to light the lamp 2. If the lamp 2 can be reliably turned on in the event of an emergency such as a fire or a power failure, etc. Since it is good, in order to simplify the circuit configuration and reduce the cost, the lighting detection unit 8 is provided only in the regular lighting circuit unit 6a, and is not provided in the emergency lighting circuit unit 6b.

  As described above, in the lighting device A such as an emergency light provided with the regular lighting circuit unit 6a and the emergency lighting circuit unit 6b separately, the lamp state is detected by measuring the lamp characteristics only in the regular lighting circuit unit 6a. When the lighting detection unit 8 is provided and no means for detecting the lamp state is provided on the emergency lighting circuit unit 6b side, the control unit 9 determines the state of the secondary battery 1 only from the battery voltage of the secondary battery 1. Therefore, there is a possibility that the state of the secondary battery 2 is erroneously detected due to the impedance change of the hot cathode fluorescent lamp that is a load.

  The cold-cathode fluorescent lamp mainly used for induction lamps has almost no change in lamp impedance even at the end of its life, but in the hot-cathode fluorescent lamp mainly used for emergency lights, the emitter applied to the filament electrode has a lighting time. Therefore, the cathode fall voltage increases, and the lamp impedance tends to increase as the lifetime approaches.

  Therefore, when the end of the life of the lamp 2 approaches and the lamp impedance rises, the discharge current of the secondary battery 1 increases as compared with the normal lighting, and the secondary battery 1 is consumed in a short time. Even in a normal state, the lamp 2 cannot be lit for a specified inspection time, and there is a possibility that the secondary battery 1 is detected to be abnormal.

  Further, when the emergency lighting circuit 6b performs a lighting operation in a no-load state in which the lamp 2 is disconnected, the discharge current of the secondary battery 1 is reduced as compared with the normal lighting, so that the battery capacity of the secondary battery 1 is reduced. Although the battery capacity is low and the battery capacity is low, the battery voltage after the specified inspection time has elapsed is higher than a predetermined reference value, and the secondary battery 1 is determined to be “normal”. There was a possibility. That is, as shown in Table 1, when the state of the secondary battery 1 is normal, it is determined to be normal regardless of the lamp state, and when the state of the secondary battery 1 is abnormal, it is determined to be abnormal regardless of the lamp state. However, as shown in Table 2, there was a possibility that the secondary battery 1 could not be accepted or rejected with certainty at the end of its life or out of the lamp. In addition, the shaded portion in Table 2 indicates a condition where there is a possibility of erroneous detection.

  The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to reliably check whether the battery is normal or not even when the lamp state is abnormal, such as lamp life or detachment. It is in providing the illuminating device and lighting system which can be performed.

In order to achieve the above object, the invention of claim 1 is provided with a normal lighting means for lighting a lamp by receiving power supply from a normal power supply, and a lamp receiving power supply from a secondary battery at the time of power failure and inspection of the normal power supply. Based on the detection results of the emergency lighting means for lighting the battery, the voltage detecting means for detecting the battery voltage of the secondary battery, and the voltage detecting means when the emergency lighting means forcibly turns on the lamp for a predetermined inspection time or longer. In addition to the inspection means for checking the secondary battery, at least during the operation of the emergency lighting means, the lamp is in a state other than the power supply path from the emergency lighting means to the lamp while being electrically insulated from the regular lighting means. It is equipped with a lamp abnormality detection means that detects the end-of-life condition of the lamp and lamp failure based on the measurement signal that measured the physical quantity related to the lamp, and the lamp abnormality detection means detects the end-of-life condition and lamp outage. When the inspection means detects an abnormality in the secondary battery, the indicator lamp blinks to notify the battery abnormality, and when the lamp abnormality detection means detects the end of life state or out of the lamp, Is characterized in that the indicator lamp blinks in a different pattern to notify the lamp abnormality , and the inspection means corrects the inspection result of the secondary battery based on the detection result of the lamp abnormality detection means .

The invention of claim 2 is characterized in that, in the invention of claim 1 , the measurement signal is a signal obtained by measuring the light output of the lamp.

A third aspect of the invention is characterized in that, in the first aspect of the invention, the measurement signal is a signal obtained by measuring an element temperature of an element constituting the emergency lighting means.

The invention of claim 4 is characterized in that, in the invention of claim 1 , the emergency lighting means comprises a switching power supply, and the measurement signal is a signal obtained by measuring the oscillation frequency of the emergency lighting means.

The invention of claim 5 is characterized in that, in the invention of claim 1 , the measurement signal is a signal obtained by measuring a battery voltage.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the battery voltage measurement signal is an absolute value of the battery voltage when a certain time has elapsed from the start of operation of the emergency lighting means.

A seventh aspect of the invention is characterized in that, in the fifth aspect of the invention, the battery voltage measurement signal is a change in which the battery voltage has changed during a certain period during lighting by the emergency lighting means.

The invention of claim 8 is characterized in that, in the invention of claim 1 , the measurement signal is a signal obtained by measuring a discharge current of the secondary battery.

A ninth aspect of the invention includes a plurality of lighting devices according to any one of the first to eighth aspects, and a control device that exchanges data with each lighting device. The inspection result of the apparatus is acquired and stored, and the presence or absence of abnormality of each lighting device is determined based on the history of the stored inspection result.

  By the way, when a lamp abnormality occurs such as an Emile state at the end of the lamp life or when the lamp comes off, the detection result of the voltage detection means changes compared to when the lamp is normal, so the inspection means can accurately check the secondary battery. According to the first aspect of the present invention, since the lamp abnormality detecting means detects the presence or absence of the lamp abnormality while the lamp is lit by the emergency lighting means, the lamp abnormality detecting means When the abnormality of the lamp is detected, the secondary battery can be inspected accurately by the inspection means by performing the inspection again by replacing the lamp. Moreover, since the lamp abnormality detection means detects the presence or absence of the lamp abnormality while being electrically insulated from the normal lighting means, the impedance viewed from the lamp side from the normal lighting means does not change, and the normal lighting is performed. There is also an effect that the lighting state of the lamp by the means is not affected.

Moreover, since the lamp abnormality detecting means measures the physical quantity related to the lamp state at a place other than the power supply path from the emergency lighting means to the lamp, the impedance of the normal lighting means as viewed from the lamp side does not change. There is an effect that the lighting state of the lamp by the regular lighting means is not affected. Further, since the inspection means corrects the inspection result of the secondary battery based on the detection result of the lamp state, there is an effect that the state of the secondary battery can be accurately detected regardless of the lamp state.

According to the invention of claim 2 , the lamp abnormality detecting means can detect the presence or absence of abnormality of the lamp by measuring the light output that changes according to the lamp state.

According to the invention of claim 3 , since the lamp abnormality detecting means detects the presence / absence of the lamp abnormality by measuring the element temperature continuously changing depending on the lamp state, the presence / absence of the lamp abnormality is easily determined. There is an effect that can be done.

According to the invention of claim 4 , since the lamp abnormality detecting means detects the presence or absence of the lamp abnormality by measuring the oscillation frequency continuously changing depending on the lamp state, the presence or absence of the lamp abnormality is easily determined. In addition, since the oscillation frequency is stabilized in a short time from the start of lighting, the lamp state determination time can be shortened.

According to the fifth to seventh aspects of the present invention, since the lamp abnormality detecting means detects the presence or absence of the lamp abnormality by measuring the battery voltage continuously changing depending on the lamp state, the presence or absence of the lamp abnormality is easily detected. In addition, since it is possible to detect a lamp abnormality using a voltage detection unit necessary for inspecting the secondary battery, it is not necessary to provide a separate detection unit, and the circuit configuration can be simplified. There is also an effect.

According to the invention of claim 8 , since the lamp abnormality detecting means detects the presence or absence of the lamp abnormality by measuring the discharge current continuously changing depending on the lamp state, the presence or absence of the lamp abnormality is easily determined. In addition, since the discharge current is stabilized in a relatively short time from the start of lighting, the lamp state determination time can be shortened.

According to the ninth aspect of the invention, there is an effect that the presence or absence of abnormality of a plurality of lighting devices can be managed in a unified manner by a single control device.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
Embodiment 1 of the present invention will be described with reference to FIG. As shown in the block diagram of FIG. 1, the illuminating device A of this embodiment includes a secondary battery 1 serving as an emergency power source, a lamp 2 including a discharge lamp such as a hot cathode fluorescent lamp, and a regular power source (commercial power source). AC switch 3 that opens and closes the power supply path connected to AC), and a power supply circuit section that is connected to the power supply path via the check switch 3 and that steps down and stabilizes the alternating current supplied from the commercial power supply AC to obtain a desired direct current. 4, a charging unit 5 that charges the secondary battery 1 with DC power output from the power supply circuit unit 4, a regular lighting circuit unit 6 a that receives power from the commercial power supply AC and lights the lamp 2, The emergency lighting circuit 6b that turns on the lamp 2 by receiving power supply from the secondary battery 1 at the time of a power failure of the commercial power supply AC, and the output of either the regular lighting circuit 6a or the emergency lighting circuit 6b to the lamp 2 Switching circuit unit 7 to be supplied and common use By measuring the current (lamp current) flowing from the lamp circuit unit 6 a to the lamp 2, the lighting detection unit 8 that detects lighting and non-lighting of the lamp 2 and the power supply path from the secondary battery 1 to the lighting circuit unit 6 are opened and closed. A switching element Q that detects power failure and power recovery of the commercial power supply AC, turns on and off the switching element Q, and detects abnormality such as the secondary battery 1 and the lamp 2, and notifies abnormality detection. The indicator lamp 15 is provided, and the lamp 2 is turned on while receiving power from the commercial power source AC at all times, and the secondary battery 1 is charged. 2 is lit.

  The control unit 9 includes a microcomputer with a built-in timer function as a main component, and a charge detection unit 10 that detects the presence or absence of a charging current flowing from the charging unit 5 to the secondary battery 1 and the voltage of the secondary battery 1 (hereinafter, A voltage detection unit 11 for detecting the battery voltage), a light detection unit 12 for detecting the light output of the lamp 2 from the output of the light receiving element 12a made of CdS or photodiode disposed in the vicinity of the lamp 2, A determination unit 13 that comprehensively determines abnormality of the secondary battery 1 and the lamp 2 from detection results of the detection units 10, 11, and 12 and a storage unit 14 including a nonvolatile memory such as an EEPROM are provided.

  In addition, the control unit 9 inspects the secondary battery 1 by forcibly lighting the lamp 2 for a predetermined inspection time with the secondary battery 1 as a power source by the lighting circuit unit 6 in a state in which the power supply path is cut off by the inspection switch 3. And a monitoring function for constantly monitoring the state of charge of the secondary battery 1. The indicator lamp 15 is composed of a light emitting diode and is driven by the determination unit 13 to emit light.

  Thus, when the power is supplied from the commercial power source AC (always), the secondary battery 1 is charged by the charging unit 5 and the switch element Q is turned off by the control unit 9 and the emergency lighting circuit unit Since the output of 6b is stopped, the switching circuit unit 7 supplies the output of the regular lighting circuit unit 6a to the lamp 2, and the regular lighting circuit unit 6a lights the lamp 2. On the other hand, when the power supply from the commercial power supply AC is stopped due to a power failure (emergency), the charge detection unit 10 stops detecting the charging current, and the control unit 9 turns on the switch element Q. As a result, power can be supplied from the secondary battery 1 to the emergency lighting circuit unit 6b. Therefore, the switching circuit unit 7 supplies the output of the emergency lighting circuit unit 6b to the lamp 2, and the emergency lighting circuit unit 6b supplies the lamp 2 to the emergency lighting circuit unit 6b. Lights up. When the power supply from the commercial power supply AC is resumed by the power recovery, the power detection is detected by the charge detection unit 10 to detect the power recovery, and the control unit 9 turns off the switch element Q. The power supply from the secondary battery 1 to the emergency lighting circuit unit 6b is stopped, and the switching circuit unit 7 supplies the output of the regular lighting circuit unit 6a to the lamp 2, thereby lighting the lamp 2.

  Here, the control unit 9 periodically checks the quality of the secondary battery 1, and at the time of inspection, the operation of the regular lighting circuit unit 6a is stopped, and the emergency lighting circuit unit 6b uses the secondary battery 1 as a power source. 2 is forcibly lit and the secondary battery 1 is discharged for a predetermined time (inspection time), and the secondary battery 1 is determined to be normal if the detection voltage of the voltage detector 11 is higher than a predetermined threshold voltage. If it is lower than the threshold voltage, it is determined that the secondary battery 1 is abnormal.

  By the way, in the no-load state in which the lamp 2 is disconnected, even if the operation of the emergency lighting circuit 6b is normal, the lamp 2 is not present. Therefore, the voltage drop of the battery voltage becomes gentle. Therefore, even when the battery capacity of the secondary battery 1 is small, consumption of the battery capacity can be suppressed. Therefore, when the determination unit 13 determines whether the secondary battery 1 is acceptable or not only by the battery voltage, the battery capacity of the secondary battery 1 is sufficient. There is a possibility of misjudging it. In addition, when the lamp 2 is in an Emileless state at the end of its life, the lamp resistance of the lamp 2 becomes larger than that in the normal state, the inverter resonance current is increased, and the consumption of the secondary battery 1 is increased. growing. That is, in the Emires state, even when the battery capacity of the secondary battery is sufficient, the battery capacity is consumed very much. Therefore, when the determination unit 13 determines pass / fail of the secondary battery 1 only by the battery voltage, the battery capacity of the secondary battery 1 is determined. May be erroneously determined to be insufficient.

  Therefore, in the present embodiment, the light detection unit 12 that detects the light output of the lamp 2 is provided, and the determination unit 13 determines the lamp state of the lamp 2 based on the detection result of the light detection unit 12, and the lamp state and the battery Whether the secondary battery 1 is normal or not is determined by comprehensively determining the voltage.

  Table 3 shows the relationship between the lamp state of the lamp 2 and the light output. Since the lamp 2 is steadily lit when the lamp 2 is normal, the determination unit 13 is detected when the light detection unit 12 detects that the light output is stable. Determines that the lamp 2 is normal. Further, when the Emires state occurs at the end of the life of the lamp 2, half-wave discharge and flickering of the lamp 2 occur. Therefore, the light detection unit 12 performs frequency analysis on the detection output of the light receiving element 12a, etc. When a state or flicker is detected, the determination unit 13 determines that the lamp 2 is at the end of its life. In the state where the lamp 2 is removed (no load state), the light detection unit 12 cannot detect the lamp light. Therefore, the determination unit 13 determines that the lamp has been removed based on the detection result of the light detection unit 12.

  As described above, since the determination unit 13 determines the lamp state (normal, end of life, off-lamp) based on the detection result of the light detection unit 12, the determination result of the lamp state and the detection result of the voltage detection unit 11 Can be determined from the detection result of the voltage detection unit 11 only when it is determined from the detection result of the light detection unit 12 that the lamp 2 is normal. Whether the secondary battery 1 is acceptable or not is determined. When an abnormality of the secondary battery 1 is detected, the indicator lamp 15 is blinked to notify the inspector of the abnormality of the secondary battery 1. Further, when the determination unit 13 determines from the detection result of the light detection unit 12 that the lamp 2 is at the end of its life or out of the lamp, it checks the abnormality of the lamp 2 by blinking the indicator lamp 15 in a pattern different from that at the time of battery abnormality. The user is informed, and the checker is urged to replace the lamp 2, and the inspection is performed again after the lamp replacement, whereby the pass / fail of the secondary battery 1 can be correctly determined.

  In this embodiment, the light detection unit 12 that detects the light output of the lamp 2 is provided, the determination unit 13 determines the lamp state of the lamp 2 from the detection result of the light detection unit 12, and the light detection unit 12 Since the lighting state of the lamp 2 is detected while being electrically insulated from the side, the impedance when the lamp 2 side is seen from the normal lighting circuit unit 6a does not change, and the lighting performance by the normal lighting circuit unit 6a is affected. In addition, insulation between the control unit 9 and the lamp 2 side can be easily secured.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIG. In the first embodiment, the light detection unit 12 that detects the light output of the lamp 2 is provided to detect the lamp state, whereas in the present embodiment, an element (for example, a switching element or the like) constituting the emergency lighting circuit unit 6b is provided. ) Is measured, and the lamp state is determined from the temperature detected by the temperature detector 16. In addition, since structures other than the temperature detection part 16 are the same as that of Embodiment 1, the same code | symbol is attached | subjected to a common component and the description is abbreviate | omitted.

  As described above, when the lamp 2 reaches the end of its life, the lamp impedance rises and the power consumption increases, so the discharge current of the secondary battery 1 increases compared to when the lamp 2 is normally lit. Therefore, in the state where the lamp 2 is lit by the emergency lighting circuit unit 6b at the end of the life, when the elements constituting the emergency lighting circuit unit 6b, for example, the emergency lighting circuit unit 6b includes a switching power source such as an inverter, the power source The temperature of the switching elements constituting the circuit rises compared to when it is normally lit. On the other hand, when the emergency lighting circuit unit 6b operates in a state where the lamp 2 is disconnected, the power consumption of the emergency lighting circuit unit 6b is remarkably reduced as compared with the normal lighting, and the discharge current of the secondary battery 1 hardly flows. The temperature of the switching element is lower than that during normal lighting. Since the element temperature changes depending on the state of the lamp 2 as described above, it is possible to determine the state of the lamp 2 by detecting the temperature change by the temperature detection unit 16.

  Table 4 shows an example of the element temperature of the switching element constituting the emergency lighting circuit portion 6b. When the lamp 2 is normally lit, the element temperature is 75 ° C., but is lit at the end of the life. In this case, the temperature is 100 ° C., and when the lamp 2 is detached, the temperature is 50 ° C. Therefore, in this case, for example, the threshold is set to 60 ° C. and 90 ° C., and if the detected temperature (element temperature) of the temperature detecting unit 16 is less than 60 ° C., the determining unit 13 determines that the lamp is off and the element temperature is If the temperature is 60 ° C. or higher and lower than 90 ° C., the determination unit 13 determines that the lamp 2 is normally lit. If the element temperature is 90 ° C. or higher, the determination unit 13 indicates that the lamp 2 is in the end of life state. Judge.

  Thus, the determination unit 13 determines whether the secondary battery 1 is normal by comprehensively determining the result of determining the state of the lamp 2 from the temperature detected by the temperature detection unit 16 and the voltage detected by the voltage detection unit 11. Abnormality can be determined, and only when it is determined from the detection result of the temperature detection unit 16 that the lamp 2 is normal, the pass / fail of the secondary battery 1 is determined from the detection result of the voltage detection unit 11. When the abnormality is detected, the indicator lamp 15 blinks to notify the inspector of the abnormality of the secondary battery 1. If the determination unit 13 determines from the detection result of the temperature detection unit 16 that the lamp 2 is at the end of its life or out of the lamp, the determination unit 13 checks the abnormality of the lamp 2 by blinking the indicator lamp 15 in a pattern different from that when the battery is abnormal. The user is informed, and the checker is urged to replace the lamp 2, and the inspection is performed again after the lamp replacement, whereby the pass / fail of the secondary battery 1 can be correctly determined.

  As described above, in this embodiment, the temperature detection unit 16 that detects the element temperature of the component of the emergency lighting circuit unit 6b is provided, and the determination unit 13 determines the lamp state of the lamp 2 from the detection result of the temperature detection unit 16. Since the lamp state is determined from the element temperature continuously changing according to the lamp state, it is easy to set the threshold value, and the temperature detector 16 is electrically insulated from the lamp 2 side. Since the temperature is detected, the impedance when the lamp 2 side is viewed from the normal lighting circuit unit 6a does not change, and the lighting performance by the normal lighting circuit unit 6a is not affected. Insulation can be easily secured. In the first embodiment, since the light receiving element 12a is disposed in the vicinity of the lamp 2, the design of the appearance of the illumination device A is restricted, and the light detection unit 12 analyzes the frequency component of the received light. However, since the temperature detection unit 16 only detects the element temperature of the component of the emergency lighting circuit unit 6b, the lighting device A is designed. Therefore, the circuit cost can be reduced because no complicated signal processing is required.

  The temperature detection unit 16 detects the element temperature of the switching element that constitutes the emergency lighting circuit unit 6b. If the element temperature is an element that changes continuously according to the state of the lamp, the switching element The temperature of other elements may be detected. For example, the state of the lamp can be reliably determined by detecting the temperature of an element such as a transformer or a choke coil.

(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIGS. In the first and second embodiments, the lamp state is determined from the change in the light output of the lamp 2 and the temperature change in the elements constituting the emergency lighting circuit unit 6b. A frequency detection unit 17 for detecting the oscillation frequency of the lighting circuit unit 6 b is provided, and the lamp state is determined from the oscillation frequency detected by the frequency detection unit 17. In addition, since structures other than the frequency detection part 17 are the same as that of Embodiment 1, the same code | symbol is attached | subjected to a common component and the description is abbreviate | omitted.

  FIG. 4 shows the relationship between the load impedance (lamp impedance) of the push-pull inverter generally used in the emergency lighting circuit section 6b and the oscillation frequency, and shows the tendency that the oscillation frequency increases as the load impedance increases. Yes. When the lamp 2 is a hot cathode fluorescent lamp, the lamp impedance increases as compared with the normal state when the lamp 2 enters the Emiless state at the end of the lifetime, and the load impedance further increases in the no-load state. The oscillation frequency will change. That is, assuming that the oscillation frequency at normal lighting is f1, the oscillation frequency at the end of life is f2, and the oscillation frequency in the no-load state is f3, the relationship of f1 <f2 <f3 is established, and by detecting this frequency change, The state of the lamp 2 can be determined.

  Table 5 shows an example of the oscillation frequency of the emergency lighting circuit unit 6b. When the lamp 2 is normally lit, the oscillation frequency is 25 kHz, but when the lamp 2 is lit at the end of the life, the frequency is 35 kHz. When 2 is out, it is 50 kHz. Therefore, in this case, the threshold is set to 30 kHz and 45 kHz, for example, and if the oscillation frequency of the emergency lighting circuit unit 6b is less than 30 kHz, the determination unit 13 determines that the lamp 2 is normally lit, and the oscillation frequency Is 30 kHz or more and less than 45 kHz, the determination unit 13 determines that the lamp 2 is in the end of life state, and if the oscillation frequency is 45 kHz or more, the determination unit 13 determines that the lamp 2 is disconnected.

  Thus, the determination unit 13 comprehensively determines the result of determining the state of the lamp 2 from the oscillation frequency detected by the frequency detection unit 17 and the detection voltage of the voltage detection unit 11, thereby determining the rechargeable battery 1. Only when it is determined that the lamp 2 is normal from the oscillation frequency, whether the secondary battery 1 is acceptable or not is determined from the detection result of the voltage detection unit 11 and the abnormality of the secondary battery 1 is detected. Then, the indicator lamp 15 is blinked to notify the inspector of the abnormality of the secondary battery 1. If the determination unit 13 determines from the oscillation frequency that the lamp 2 is at the end of its life or out of the lamp, the determination unit 13 notifies the inspector of the abnormality of the lamp 2 by blinking the indicator lamp 15 in a pattern different from that when the battery is abnormal. Thus, by prompting the inspector to replace the lamp 2 and performing another inspection after the lamp replacement, it is possible to correctly determine whether the secondary battery 1 is acceptable.

  As described above, in this embodiment, the frequency detection unit 17 that detects the oscillation frequency of the emergency lighting circuit unit 6b is provided, and the determination unit 13 determines the lamp state of the lamp 2 from the detection result of the frequency detection unit 17, Since the lamp state is determined from the oscillation frequency that continuously changes in accordance with the lamp state, it is easy to set a threshold value, and the frequency detection unit 17 determines the oscillation frequency while being electrically insulated from the lamp 2 side. As a result of the detection, the impedance when the lamp 2 side is viewed from the normal lighting circuit unit 6a does not change, and the lighting performance by the normal lighting circuit unit 6a is not affected, and the control unit 9 and the lamp 2 side are insulated. Can be easily secured.

  In the first embodiment, since the light receiving element 12a is disposed in the vicinity of the lamp 2, the design of the appearance of the illumination device A is restricted, and the light detection unit 12 analyzes the frequency component of the received light. However, since the frequency detection unit 17 only detects the oscillation frequency of the emergency lighting circuit unit 6b, the lighting device A is restricted in terms of design. The circuit cost is low because no complicated signal processing is required. Furthermore, in the second embodiment, the element temperature of the component of the emergency lighting circuit unit 6b is detected by the temperature detection unit 16, and the emergency lighting circuit unit 6b starts operating after the commercial power source AC has failed. It takes at least a few minutes from the start of operation to stabilize, and the absolute temperature of the element to be detected changes due to changes in the ambient temperature of the illumination device A. In order to make a determination, it is preferable to perform correction according to the elapsed time or the ambient temperature after the emergency lighting circuit unit 6b starts operating, and the determination process of the determination unit 13 becomes complicated. On the other hand, the oscillation frequency of the emergency lighting circuit unit 6b detected by the frequency detection unit 17 is not easily affected by the elapsed time or the ambient temperature after the emergency lighting circuit unit 6b starts to operate. If the discharge is stable, it becomes possible to determine the lamp state within a few seconds after the operation of the emergency lighting circuit unit 6b, and the lamp state can be shortened in a shorter time than when determining the lamp state from the element temperature. Can be determined.

(Embodiment 4)
A fourth embodiment of the present invention will be described with reference to FIG. In the first to third embodiments described above, the lamp state is determined from the change in the light output of the lamp 2, the change in the temperature of the elements constituting the emergency lighting circuit unit 6b, and the change in the oscillation frequency. The lamp state is determined from the battery voltage detected by the voltage detection unit 11 in the lighting state by the emergency lighting circuit unit 6b. In addition, since the structure except the point which eliminated the photon detection part 12 and the light receiving element 12a is the same as that of Embodiment 1, the same code | symbol is attached | subjected to a common component and the description is abbreviate | omitted.

  In the present embodiment, the lamp state of the lamp 2 is determined based on the battery voltage detected using the voltage detection unit 11 that is indispensable in the lighting device A having the inspection function of the secondary battery 1. Since it is not necessary to add a separate detection unit to determine the lamp state as in 1 to 3, the circuit configuration can be simplified, and the size and cost of the apparatus can be reduced.

  FIG. 6 shows the relationship between the discharge time of the secondary battery 1 and the battery voltage VBT, and the judgment unit 13 determines the battery voltage VBT at the time when a certain time T1 has elapsed from the start of discharge and predetermined thresholds Va and Vb (Va <Va). The lamp state is determined by comparing the level with Vb), and the quality of the two-time battery 1 is determined by comparing the level between the battery voltage VBT and the threshold voltage Vth after a predetermined inspection time Ta has elapsed. Judgment. In the figure, a indicates a discharge curve at the time of normal lighting, b indicates a discharge curve at the end of the lifetime, and c indicates a discharge curve when the lamp is off.

  As described above, when the lamp 2 reaches the end of its life, the lamp impedance increases and the power consumption increases. Therefore, the discharge current of the secondary battery 1 increases as compared with the normal lighting of the lamp 2, and the battery voltage VBT decreases. Also grows. On the other hand, when the emergency lighting circuit unit 6b operates in a state where the lamp 2 is disconnected, the power consumption of the emergency lighting circuit unit 6b is remarkably reduced as compared with the normal lighting, and the discharge current of the secondary battery 1 hardly flows. The decrease in battery voltage VBT is reduced. As described above, the decrease in the battery voltage VBT varies depending on the state of the lamp 2, so that the state of the lamp 2 can be determined by detecting the decrease in the voltage drop by the voltage detector 11. Accordingly, the determination unit 13 determines the lamp state from the detected voltage (battery voltage VBT) after the lapse of the predetermined time T1, and if the battery voltage VBT is between the threshold value Va and the threshold value Vb, the lamp 2 is normally lit. If it is lower than the threshold value Va, it is determined that the end of life state is reached, and if it is higher than the threshold value Vb, it is determined that the lamp has been removed (see Table 6).

  Here, immediately after the emergency lighting circuit 6b lights the lamp 2, the voltage difference of the battery voltage VBT due to the lamp state is small, so by setting the certain time T1 to a time of about several tens of seconds to several minutes, The accuracy of determining the lamp state can be increased. In particular, the push-pull inverter mainly used as the emergency lighting circuit unit 6b performs a resonance operation even in a no-load state, so that the battery voltage VBT gradually decreases even when the lamp is disconnected. Although it is difficult to stick, the timing for determining whether the lamp is normal or out of the lamp is delayed until the inspection time Ta, which is stipulated in the provisions of the Fire and Disaster Management Agency and Building Standards Law, so that the battery voltage VBT will be The difference can be increased and the accuracy of discrimination can be increased. On the other hand, it is necessary to detect the end of life before the battery voltage VBT reaches the threshold voltage Vth for determining whether or not the battery is acceptable. The constant time T1 is set to a time of several tens of seconds to several minutes to set the lamp The state needs to be determined.

  In the present embodiment, the lamp state is determined from the battery voltage at the time when a certain time T1 has elapsed from the start of lighting of the emergency lighting circuit unit 6b. However, as shown in FIG. The lamp state can also be determined from the change (voltage difference ΔV) of the battery voltage VBT during the period up to T2. In FIG. 7, a is a discharge curve at the time of normal lighting, b is a discharge curve at the end of life, c is a discharge curve when the lamp is off, and as is apparent from this figure, the lamp 2 is at the end of life. Then, since the lamp impedance rises and the power consumption increases, the discharge current of the secondary battery 1 increases as compared with the normal lighting of the lamp 2, and the change amount ΔV2 of the battery voltage VBT is greater than the change amount ΔV1 at the normal time. Also grows. On the other hand, when the emergency lighting circuit unit 6b operates in a state where the lamp 2 is disconnected, the power consumption of the emergency lighting circuit unit 6b is remarkably reduced as compared with the normal lighting, and the discharge current of the secondary battery 1 hardly flows. The change ΔV3 of the battery voltage VBT becomes small. Thus, since the change ΔV of the battery voltage VBT changes depending on the state of the lamp 2, the state of the lamp 2 can be determined by detecting the change ΔV of the battery voltage VBT by the voltage detector 11. . Therefore, in the determination unit 13, the difference ΔV (that is, a certain period) of the detection voltage (battery voltage VBT) of the voltage detection unit 11 when a certain time T 1, T 2 has elapsed since the emergency lighting circuit unit 6 b lights the lamp 2. The lamp state is determined from the amount of change in (2), and if the absolute value of the voltage difference ΔV is between the threshold values Vth1 and Vth2 (Vth1 <Vth2), it is determined that the lamp 2 is normally lit, and the threshold value Vth2 If it is greater than the threshold value Vth1, it is determined that the lamp is out of the lamp (see Table 7).

  When the lamp state is determined from the voltage difference ΔV of the battery voltage VBT, the times T1 and T2 at which the battery voltage VBT is measured are respectively the time after the start of lighting by the emergency lighting circuit unit 6b and the battery voltage 2 is the threshold. It is necessary to set the time before the voltage voltage drops to the threshold voltage Vth. This condition is satisfied, and the voltage difference ΔV increases when the lamp 2 is normally lit, at the end of its life, and when the lamp is out of the lamp. By setting at such times T1 and T2, it becomes possible to determine with high accuracy.

  As described above, in the present embodiment, the determination unit 13 determines the lamp state from the battery voltage of the secondary battery 1 detected by the voltage detection unit 11, and from the battery voltage that changes continuously according to the lamp state. Since the lamp state is determined, it is easy to set the threshold value, and the voltage detection unit 11 detects the oscillation frequency in a state of being electrically insulated from the secondary side (lamp 2 side) of the emergency lighting circuit unit 6b. Therefore, the impedance when the lamp 2 side is viewed from the normal lighting circuit unit 6a does not change, the lighting performance by the normal lighting circuit unit 6a is not affected, and the control unit 9 and the lamp 2 side are easily insulated. Can be secured.

(Embodiment 5)
A fifth embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a current detection unit 18 that detects the discharge current of the secondary battery 1 using a non-contact sensor unit 18a such as a Hall element is provided, and the current detection unit 18 detects the lighting state by the emergency lighting circuit unit 6b. The lamp state is judged from the discharged current. Since the configuration other than the current detection unit 18 and the sensor unit 18a is the same as that of the first embodiment, common components are denoted by the same reference numerals and description thereof is omitted.

  FIG. 8 shows the relationship between the load impedance (lamp impedance) of the push-pull inverter generally used in the emergency lighting circuit 6b and the battery discharge current of the secondary battery 1, and the load impedance is released from the short-circuited state (opened). ) When the battery changes to a state, the battery discharge current becomes maximum under a certain impedance condition, and the battery discharge current tends to be smaller on both the higher and lower impedance sides. The impedance at which the battery discharge current becomes maximum is substantially the same as the impedance at the end of the lamp life, and the battery discharge current (I1) at normal lighting is the battery discharge current (I2) at the end of life and the battery at no load. It is a value between the discharge current (I3). Therefore, the threshold value Ia is set between the battery discharge current I1 at normal lighting and the battery discharge current I3 at no load, and the threshold Ib is set to be the battery discharge current I1 at normal lighting and the battery discharge current I3 at the end of life. If the lamp 2 is normally lit between the battery discharge current I and the predetermined threshold values Ia and Ib (Ia <Ib) as shown in Table 8, Ia <I <Ib If the relationship is established and the end of life state is reached, I> Ib, and if the lamp 2 is disconnected, I <Ia. Therefore, the determination unit 13 compares the battery discharge current I with the predetermined threshold values Ia, Ib. By doing so, the lamp state can be determined.

  Thus, the determination unit 13 comprehensively determines the result of determining the state of the lamp 2 from the battery discharge current of the secondary battery 1 detected by the current detection unit 18 and the detection voltage of the voltage detection unit 11. The normality / abnormality of the secondary battery 1 can be determined. Only when it is determined that the lamp 2 is normal from the battery discharge current, the pass / fail of the secondary battery 1 is determined from the detection result of the voltage detection unit 11. When an abnormality of the secondary battery 1 is detected, the indicator lamp 15 blinks to notify the inspector of the abnormality of the secondary battery 1. If the determination unit 13 determines from the battery discharge current that the lamp 2 is at the end of life or out of the lamp, the determination unit 13 notifies the inspector of the abnormality of the lamp 2 by blinking the indicator lamp 15 in a pattern different from that when the battery is abnormal. In addition, by prompting the inspector to replace the lamp 2 and performing another inspection after the lamp replacement, the pass / fail of the secondary battery 1 can be correctly determined.

  As described above, in this embodiment, the current detection unit 18 that detects the battery discharge current of the secondary battery 1 is provided, and the determination unit 13 determines the lamp state of the lamp 2 from the detection result of the current detection unit 18. Since the lamp state is determined from the battery discharge current that continuously changes in accordance with the lamp state, it is easy to set a threshold value, and the current detector 18 is discharged in a state of being electrically insulated from the lamp 2 side. Since the current is detected, the impedance when the lamp 2 side is seen from the normal lighting circuit unit 6a does not change, and the lighting performance by the normal lighting circuit unit 6a is not affected. Insulation can be easily secured. Here, the battery discharge current I greatly changes as shown in FIG. 9 depending on the load impedance (lamp impedance), and becomes almost constant when the lamp 2 is stably lit. Therefore, the impedance change due to the change in the ambient temperature is taken into account. However, the setting of the threshold values Ia and Ib is relatively easy, and the time required for the determination can be as short as several seconds to several minutes, so the lamp state can be determined in the same time as in the third embodiment. become.

  In each of the above-described embodiments, when the determination unit 13 detects an abnormality in the lamp 2, the abnormality is notified by blinking the indicator lamp 15 in a pattern different from that at the time of battery abnormality. The lamp 2 may be turned off before reaching the time.

(Embodiment 6)
Embodiment 6 of the present invention will be described with reference to FIG. In the present embodiment, the communication unit 19 that transmits the determination result of the determination unit 13 to the control device B via the communication line 21 in the lighting device A of the above-described fifth embodiment is provided in the control unit 9, and the determination of the determination unit 13 The result is transmitted to the external control device B so that the inspection result of the lighting device A can be managed by the control device B. In addition, since structures other than the communication part 19 and the control apparatus B are the same as that of Embodiment 1, the same code | symbol is attached | subjected to a common component and the description is abbreviate | omitted.

  In this lighting system, the lighting device A and the control device B are connected via the communication line 21, and the control device B receives the secondary battery 1 and the lamp 2 from the lighting device A connected via the communication line 21. The inspection results are collected and stored, and the presence or absence of abnormality of each lighting device A is determined based on the history of the stored inspection results, and displayed on a display monitor (not shown) to display the control device B. It is possible to notify the monitor who monitors the abnormality of the secondary battery 1 and the lamp 2 and to prompt maintenance. In addition, the control device B comprehensively determines whether or not there is an abnormality including not only one inspection result acquired from the lighting device A but also the results of the past several times, and there is an advantage that the accuracy of abnormality detection is improved. is there.

  In FIG. 10, only one lighting device A is connected to the control device B. However, a plurality of lighting devices A may be connected to the control device B, and the lighting device A and the control device B are individually connected. Data can be exchanged between the lighting device A and the control device B using the assigned address.

  In the other embodiments described above, it is needless to say that the communication unit 19 may be provided in the control unit 9 so that the determination result of the determination unit 13 is transmitted from the communication unit 19 to the external control device B.

  Moreover, in each embodiment mentioned above, you may make it the determination part 13 correct | amend the determination result of the pass / fail of the secondary battery 1 based on the determination result of a lamp state. For example, when the threshold voltage Vth for determining the presence or absence of abnormality from the battery voltage after discharging for a predetermined inspection time Ta at the time of inspection is 1.1 V / cell, the detection result of the voltage detector 11 is 1. If the voltage is 0.0 V / cell, the determination unit 13 determines that the secondary battery 1 is “abnormal”, but when the end-of-life state of the lamp 2 is detected, the voltage drop is earlier than when the lamp is normal. And the detection result of the voltage detector 11 is corrected to 1.2 V / cell, and it is determined that the secondary battery 1 is “normal”. On the contrary, if the detection result of the voltage detection unit 11 is 1.2 V / cell, the determination unit 13 determines that the secondary battery 1 is “normal”, but if the lamp removal is detected, the lamp is normal. It is determined that the voltage drop has been delayed more than that, and the detection result of the voltage detector 11 is corrected to, for example, 1.0 V / cell, and the secondary battery 1 is determined to be “abnormal”. In this way, the determination unit 13 only needs to correct a predetermined value according to the determination result of the lamp state (“normal”, “end of life”, “out of lamp”), and the inspection accuracy of the secondary battery 1 is improved. To do. When the lamp state is determined from a physical quantity that continuously changes according to the lamp state as in the second to fifth embodiments described above, the correction value is changed according to the absolute value of the physical quantity related to the lamp state. Anyway.

It is a block diagram of the illuminating device of Embodiment 1. FIG. It is a block diagram of the illuminating device of Embodiment 2. It is a block diagram of the illuminating device of Embodiment 3. It is a figure which shows the relationship between the load impedance same as the above and the oscillation frequency of an emergency lighting circuit part. It is a block diagram of the illuminating device of Embodiment 4. It is a figure which shows the relationship between discharge time same as the above, and battery voltage. It is a figure which shows the relationship between discharge time same as the above, and battery voltage. It is a block diagram of the illuminating device of Embodiment 5. It is a figure which shows the relationship between a load impedance same as the above and a battery discharge current. It is a block diagram of the illuminating device of Embodiment 6. It is a block diagram of the conventional illuminating device. It is a block diagram of the other conventional illuminating device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Secondary battery 2 Lamp 6a Common lighting circuit part 6b Emergency lighting circuit part 11 Voltage detection part 12 Photodetection part 13 Judgment part AC Commercial power supply

Claims (9)

A normal lighting means for lighting the lamp by receiving power supply from the normal power source;
Emergency lighting means for lighting the lamp by receiving power supply from a secondary battery at the time of power failure and inspection of the regular power source;
Voltage detection means for detecting a battery voltage of the secondary battery;
Inspection means for inspecting the secondary battery based on the detection result of the voltage detection means when the lamp is forcibly lit for a predetermined inspection time by the emergency lighting means;
A measurement signal obtained by measuring a physical quantity related to a lamp state at a place other than a power supply path from the emergency lighting means to the lamp while being electrically insulated from the normal lighting means at least during the operation of the emergency lighting means. A lamp abnormality detection means for detecting the end of life state of the lamp and a lamp detachment based on
In a state where the lamp abnormality detection means has not detected the end of life state or the lamp detachment, when the inspection means detects the abnormality of the secondary battery, the indicator abnormality blinks to notify the battery abnormality, and the lamp abnormality When the detecting means detects an end of life state or a lamp failure, the indicator lamp blinks in a pattern different from that at the time of battery abnormality to notify the lamp abnormality , and the inspection means detects the lamp abnormality detecting means. A lighting device , wherein the inspection result of the secondary battery is corrected based on the above .   The lighting device according to claim 1, wherein the measurement signal is a signal obtained by measuring a light output of the lamp.   The lighting device according to claim 1, wherein the measurement signal is a signal obtained by measuring an element temperature of an element constituting the emergency lighting unit.   2. The lighting device according to claim 1, wherein the emergency lighting means comprises a switching power supply, and the measurement signal is a signal obtained by measuring an oscillation frequency of the emergency lighting means.   The lighting device according to claim 1, wherein the measurement signal is a signal obtained by measuring a battery voltage.   6. The lighting device according to claim 5, wherein the battery voltage measurement signal is an absolute value of the battery voltage when a certain time has elapsed from the start of the operation of the emergency lighting means.   6. The lighting device according to claim 5, wherein the battery voltage measurement signal is a change in the battery voltage during a certain period during lighting by the emergency lighting means.   The lighting device according to claim 1, wherein the measurement signal is a signal obtained by measuring a discharge current of the secondary battery. A plurality of lighting devices according to any one of claims 1 to 8, and a control device that exchanges data with each lighting device, wherein the control device acquires a check result of each lighting device. The lighting system is characterized by determining whether there is an abnormality in each lighting device based on the history of the stored inspection results.

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