JP2015118837A - Led illuminating device, power supply device, and power supply package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED illuminating device for indoor/outdoor installation illumination that functions as a portable lamp and emergency illumination, and to provide a lighting control method for the same.SOLUTION: An LED illuminating device comprises: an LED array 208 arranged on a flat surface; a secondary battery 110 for operating the LED array 208 in a case where no power is supplied from a commercial power supply; a DC conversion part 202 for driving the LED array 208, and provided for charging the secondary battery 110; a voltage comparator 205 (604) comparing a charging voltage for charging the secondary battery means with a probe voltage, or comparing a ground voltage with the probe voltage; and a switch part 209 turning on/off an output of the voltage comparator 205. In response to the comparison with the probe voltage, the voltage comparator 205 outputs an output voltage of the secondary battery means at service interruption to control to lighten the LED array.

Description

  The present invention relates to an electric lamp device including a light emitting diode (hereinafter referred to as LED), and more particularly to an LED lighting device, a power supply device, and a starch package.

  In recent years, white LEDs and the like have become widespread, and there is a demand for power saving, and LED lighting devices that use LEDs as light sources are often used. Since an LED can emit light with high luminance at a current of several mA to several tens of mA, a large-scale power supply device is not required even when used as a light bulb. For this reason, it is also used as a portable light, a light bulb and a stationary illumination light source, or a light source of a battery-powered light device.

  In recent years, commercial power supply has been stopped in the event of a natural disaster such as an earthquake, large typhoon, or guerrilla heavy rain, and it has been recognized again that it must be assumed that it can be used even in the event of a natural disaster when the commercial power supply stops. It is being done. Furthermore, even when the commercial power supply is stopped, it is necessary to evacuate quickly from a place where lighting is necessary at night or in the daytime.

  However, if there is no light at night or in the daytime, for example, in underground shopping malls, subway premises, or tunnels, the commercial power supply will not be visible, and even if evacuated, there are few cases of danger. Absent. In the event of a power outage during a disaster, even if there is a backup emergency power generation facility, it cannot be said that the power line for the emergency power generation facility is sound.

  Therefore, for the above-mentioned purpose, it is provided in a building exclusively as emergency lighting, or a flashlight is used as emergency lighting in the home. However, power outages occur unexpectedly, so if you forget where emergency lighting equipment and flashlights are, or if you are at night, you can not find emergency lighting equipment and flashlights and it will not be useful In some cases. Even if there is no power outage in the event of an emergency, if a power breaker is used excessively, the safety breaker will operate, all the lights in the building will be turned off, and a similar case may occur in the immediate vicinity. It is.

  Various techniques have already been known to improve such problems. For example, Japanese Unexamined Patent Application Publication No. 2011-90970 (Patent Document 1) describes an LED emergency lighting device and uses a power failure detection circuit. A technique for automatically lighting an LED emergency lighting device in the event of a power failure is described. However, in the technique described in Patent Document 1, although the LED lighting device can be automatically turned on at the time of a power failure, the charging line and the LED drive current supply line are shared. Therefore, there is a problem that the current supplied to the LED from the secondary battery to the LED at the time of a power failure becomes excessive, and the lighting life cannot be controlled. Overcurrent is supplied to the LED, and there is a problem in using it as an emergency lighting device in terms of the life of the LED. In addition, a secondary battery has to be prepared for each LED, and it was not versatile as a lighting fixture even in terms of cost.

  Japanese Patent Laid-Open No. 2010-73334 (Patent Document 2) describes an LED that can function as a stationary illumination lamp at all times, function as an emergency light during a power failure, and be removed and used as a flashlight. The lamp is listed.

  Patent Document 2 describes that an automatic changeover switch is provided so that an automatic changeover switch is turned on when an AC power supply is interrupted in order to automatically turn on at the time of a power failure. However, in Patent Document 2, since both the manual operation switch and the automatic change-over switch are provided, it may be assumed that the automatic lighting operation does not function smoothly. Moreover, since a dedicated charging / switching circuit for controlling charging / switching is required, there is a concern that the circuit configuration is complicated.

  Japanese Patent Laid-Open No. 2013-101785 (Patent Document 3) discloses that a stationary LED lighting device is automatically turned on during a power failure, and when the user turns off the light-off switch, the light is turned off by voice recognition instructing the user to turn off. Describe the points to be made.

  The LED lighting device described in Patent Document 3 can also provide an automatic lighting function at the time of a power failure, but even when the user intentionally operates the wall switch, power is supplied from the built-in battery, and the charged battery is the user's intention. There is a problem that it is consumed by the lighting operation that does not. In addition, the user continues to turn on the light even though the user tried to turn off the wall switch, and the user is confused as to whether the LED lighting should be turned on or off at present. was there.

  As described above, the conventional LED lighting device can provide an automatic lighting function at the time of a power failure, but the circuit configuration is complicated, and it cannot be said that it is sufficient in terms of life.

JP 2011-90970 A JP 2010-733334 A JP 2013-101785 A

  The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide an LED lighting device, a power supply device, and a power supply package that also function as an emergency light.

  In order to solve the above-described problems, the present invention receives power from a commercial power source, charges the secondary battery when the commercial power is normal, and controls the lighting of the LED lighting device at the request of the user. An LED lighting apparatus including a planarly arranged LED array that smoothly functions as an emergency light by receiving power supply from a secondary battery when a commercial power supply is abnormal is provided. The LED lighting device uses a predetermined probe voltage to determine that the power supply from the commercial power source has been lost, and automatically lights up.

  Further, the present invention is applicable to any LED lighting device, and includes a power supply device that detects a predetermined probe voltage and controls charging to a secondary battery and power supply from the secondary battery. Can be provided. Furthermore, the present invention can provide a power supply package in which a power supply device and a secondary battery are integrated.

  According to the present invention, it is possible to recover the lighting when the commercial power source is shut off by supplying power from the secondary battery that is charged when the commercial power source is normal, and a special control device for automatic switching is necessary. In addition, it is possible to suppress the deterioration of the LED and the deterioration of the battery caused by leaving the LED within an unpredictable period such as driving at the time of power failure. Therefore, it is possible to provide an LED lighting device, a power supply device, and a power supply package that function as an emergency light automatically at the time of a power failure and reliably function as an emergency light while simplifying the circuit configuration.

The figure which shows the LED lighting apparatus of this embodiment. The figure which shows embodiment of the power supply device of this embodiment. The figure which shows embodiment of the voltage comparison circuit of the voltage comparison part of this invention. The figure which shows 2nd Embodiment of the power supply device of this invention. The figure explaining the charging operation of the power supply device of this embodiment, and the lighting operation of an LED array corresponding to the output voltage _Vout of a comparator. The functional block diagram which shows 3rd Embodiment of the power supply device of this embodiment. The figure which showed embodiment of the circuit structure of the voltage comparison part in this embodiment, and the automatic lighting part at the time of a power failure. The figure which put together the lighting state of the installation type LED lighting apparatus in this embodiment.

100: LED lighting device 101: casing 102: substrate 103: LED
104: Power plug 105: Power supply device 106: Secondary battery 110: Secondary battery 150: LED lighting device 150: Installation type LED lighting device 151: Case 152: Substrate 153: LED
154: Power plug 155: Secondary battery 156: Power supply device 160: Section 163: LED
200: power supply device 201: switch unit 202: DC conversion unit 202a, 202b: DC conversion unit 203: DC-DC conversion unit 204: control resistor 205: voltage comparison unit 207: charge control unit 208: LED array 209: switch unit 210 : Secondary battery 300: Voltage comparison circuit 301: Comparator 302: Resistor 304: Resistor 305: Resistor 600: Power supply device 601: DC converter 602: Charge controller 603: DC-DC converter 604: Voltage comparator 605: 2 Secondary battery 606: Automatic lighting unit during power failure 607: Switch unit 608: LED lighting circuit 610: LED array 611: Switch 612: Potential generator 701: OR gate 703: Transistor 704: Inverter 705: FET

  Hereinafter, the present invention will be described using embodiments. However, the present invention is not limited to the embodiments described below. FIG. 1 shows an embodiment of the LED lighting device of the present embodiment. The LED illuminating device of this embodiment means a relatively large and large light amount LED illuminating device of a type that is fixed to a wall or ceiling of a building via a fixture. The LED lighting device 100 is configured as a bar shape, and is provided with a casing unit 101, a power plug 104 that is disposed at both ends of the casing unit 101, and allows commercial power to be drawn into the casing unit 101, and And a substrate 102 on which an LED (Light Emitting Diode) 103 is mounted. The LED lighting device 100 is fixed to an appropriate position such as a wall or a ceiling via a fixture (not shown) fixed to the wall, ceiling, or the like.

  The casing 101 is not particularly limited in material and color as long as it has optical characteristics such as glass and plastic that can emit LED light to the outside. When the commercial power is normal, that is, when there is no power failure, the LED 103 is supplied with power by a direct current obtained by direct conversion from the commercial power.

  In addition, the LED 103 is supplied with power from the secondary battery 106 charged by the power supply device 105 during normal times when the commercial power supply is abnormal, for example, a power failure or breaker breakage, and functions as an emergency light. It is possible to do.

  In addition, the LED lighting device 150 shown in FIG. 1 has a casing 151 that has a ring shape, and is arranged in the casing 151 from a power plug 154 formed in a part of the casing 151. Commercial power is being supplied to (not shown). The cross-section 160 shows the stationary LED lighting device 150 as a cross-section along the cutting line A-A ′. A substrate 152 extending in an arc shape is disposed inside the LED illumination device 150. A plurality of LEDs 153 are arranged on the substrate 152 and receive power supply from the power supply device 156 or the secondary battery 155 (not shown). The LED lighting device 150 is also fixed at an appropriate position such as a wall or ceiling via a fixture (not shown) fixed to the wall or ceiling.

  In addition, in the present embodiment, any shape of the fluorescent lamp known so far can be used, and the shape is not particularly limited. The LED lighting devices 100 and 150 of the present embodiment also function as a portable light with a large amount of light by being removed from the fixture. For this reason, even if there is no flashlight at the time of emergency, it functions as an emergency portable light by removing the LED lighting devices 100 and 150 from the fixture.

  FIG. 2 shows the power supply device 200 mounted on the substrates 102 and 152 in this embodiment. The configuration excluding the secondary battery from FIG. 2 is an embodiment of the power supply device, and the entire FIG. 2 corresponds to the configuration of the power supply package. 2 will be described in order from the power input side on the left hand side of FIG. 2, the commercial power supply line is first introduced into the DC conversion unit 202 of the power supply device 200. The direct current conversion unit 202 is a rectifier circuit including a transformer, a transistor, and an inverter as necessary, and converts alternating current of a commercial power source into direct current within a predetermined or set range. The output of the direct current converter 202 is introduced into the DC-DC converter 203.

  The DC-DC conversion unit 203 generates a drive voltage for driving the LED array 208, supplies an LED drive current given by the operating voltage / control resistor to the LED array 208 via the control resistor 204, and supplies the LED array 208. Lights up. In parallel with this, the output of the DC conversion unit 202 is also supplied to the charging control unit 207 so that the secondary battery 210 can be charged in the power supply device of FIG. The LED array 208 means an array light source in which a plurality of LEDs 103 and 153 are mounted on the substrates 102 and 152 as shown in FIG.

  The output of the charging control unit 207 is supplied to the secondary battery 210 and is used for charging the secondary battery 210 in the embodiment described. In addition, the charging voltage output from the charging control unit 207 is input to the voltage comparison unit 205 and is used to determine the interruption of the commercial power supply. In addition, since the output of the direct current | flow conversion part 202 is also supplied also to the charge control part 207, the charge of the secondary battery by a commercial power supply is also enabled simultaneously. Thereby, since the secondary battery 210 can be always charged, LED drive power in an emergency can be ensured more reliably.

  On the other hand, the output of the secondary battery 210 is connected to the voltage comparison unit 205. The voltage comparison unit 205 compares the charging voltage with the voltage of the secondary battery 210 and controls the supply of the drive current from the secondary battery 210 to the LED array 208.

The function of the voltage comparison unit 205 will be described. The voltage comparison unit 205 compares the charging voltage (V _in ) with the output voltage (V _ref ) of the secondary battery 210, and determines the output voltage V _ref of the secondary battery 210. If it is higher, it is determined that charging is not in progress. If the voltage comparison unit 205 determines that V _in is higher than V _ref , the voltage comparison unit 205 determines that charging is in progress or lighting by a commercial power source. When charging or lighting by a commercial power source is performed, the output is turned off (Low level), and the drive current from the secondary battery 110 is not supplied to the LED array 208.

On the other hand, the voltage comparison unit 205 outputs a drive voltage necessary for driving the LED array 208 when V _ref is higher, that is, when the battery is not charged and commercial power is not supplied. To function. The output voltage of the voltage comparison unit 205 is sent to the switch unit 209. The switch unit 209 provides a function for switching the installation type LED lighting devices 100 and 150 on and off. Note that the switch unit 209 may be a mechanical contact switch or may be capable of remote control operation.

  Hereinafter, the function of the switch unit 209 will be described. When the voltage comparison unit 205 determines that the battery is not being charged, power is supplied from the secondary battery 210 to drive the LED array 208 as described above. The power from the secondary battery 210 is applied to the switch unit 209. In the case of the switch unit 209, the LED lighting devices 100 and 150 do not need to function due to reasons such as daytime or absence of people. The electric power from the secondary battery 110 is not supplied to the LED array 208 and does not cause the LED array 208 to emit light.

  On the other hand, when the switch unit 209 is on, the power from the secondary battery 210 is supplied to the LED array 208 to cause the LED array 208 to emit light. When charging is suspended to prevent overcharging of the secondary battery 210, the voltage comparison unit 205 can supply power from the secondary battery 210, but the output of the DC-DC conversion unit 203 By setting the potential higher than the potential of the secondary battery 210 and disposing a diode for preventing overcurrent to the voltage comparison unit 205 between the voltage comparison unit 205 and the switch unit 209, the commercial power supply is normal. In this case, the power supply from the secondary battery 210 is not substantially performed.

  The control resistor 204 may be the same as or different from the control resistor connected to the DC-DC conversion unit 203 and the control resistor connected to the switch unit 209, but the operation when the secondary battery 210 is driven is performed. For the purpose of extending the time, it is preferable to set the maximum resistance value according to the purpose of the flashlight or emergency light.

  In the embodiment illustrated in FIG. 2, the power supply device 200 and the secondary battery 210 are described as being disposed on the substrates 102 and 152. In other embodiments, only the secondary battery 210 may be disposed on the substrate, and the power supply device 200 may be disposed separately from the LED lighting device. In still another aspect, the power supply device 200 and the secondary battery can be integrated and separated from the LED lighting devices 100 and 150, for example, as a power supply package. In this aspect of the power supply package, in the embodiment, any type of LED lighting device can function as an emergency light.

  FIG. 3 shows an embodiment of the voltage comparison circuit 300 of the voltage comparison unit 205 of the present invention. The voltage comparison circuit 300 can be configured to include the comparator 301. The operating voltage is lower than the rated output voltage of the secondary battery 210 even when the output voltage of the secondary battery 210 is used and the commercial power supply is shut off. And it works without any problems. Further, the comparator 301 is configured as an inverting comparator, and the negative input terminal (−) is an input voltage and the positive input terminal (+) is a reference voltage.

On the other hand, the charging voltage (V _in ) is input to the negative input terminal (−) via the resistor 302, and the voltage (V _ref ) of the secondary battery 210 is input to the positive input terminal (+) via the resistor 304. Have been entered. Since the comparator 301 is an inverting comparator, the output is turned off (Low level) when V _in ≧ V _ref, and the on output (secondary battery output voltage) is given when V _in <V _ref , A voltage equal to the voltage of the secondary battery 210 is output. Note that the resistor 305 connected to the output terminal of the comparator 301 is a pull-up resistor.

That is, when the charging voltage has a significant value exceeding 0 V, it is indicated that charging is in progress, and the charging voltage during charging is at least the output voltage of the secondary battery 210, so the commercial power supply is shut off. There is nothing. In this case, since it is not necessary to supply power from the secondary battery 210, the comparator 301 is turned off as a result of the inversion determination by the comparator 301. On the other hand, when the charging voltage is 0 V, the LED lighting devices 100 and 150 are: (1) a state where the commercial power supply is interrupted, (2) a state where the user turns off the hand switch, and (3) the LED lighting device, It is one of the states where it is removed from the fixture and used as a portable electric lamp, and at the same time, V _in <V _ref is satisfied.

At this time, the comparator 301 gives an ON output, and generates an output voltage equal to the voltage (V _ref ) of the secondary battery 210 at its output side terminal. If the user sets the switch unit 209 according to the purpose, the charge voltage (V _in ) is _in the state of (2) above in which the user simply instructs to turn off. Wasteful power supply from the secondary battery 210 does not occur.

On the other hand, in the cases (1) and (3) above, if the user turns on the switch unit 209, the comparator 301 has already output the voltage (V _ref ) of the secondary battery 210 to its output terminal. It is possible to supply current up to the limit current of the comparator 301. In many cases, since the LED array 208 operates at about 20 mA, if a power operational amplifier is used as the comparator 301, for example, a large LED lighting device 100 or 150 equipped with a large number of LEDs 103 and 163 can be used. . Further, according to the required output current, a transistor can be arranged on the output side of the comparator 301 to amplify the output current.

  By using the voltage comparison unit 205 described above, the LED lighting devices 100 and 150 can be operated as fluorescent lamps and emergency lights.

  FIG. 4 shows a second embodiment of the power supply device 200. The configuration excluding the secondary battery from FIG. 2 is an embodiment of the power supply apparatus, and FIG. 4 as a whole corresponds to the configuration of the power supply package. Elements having the same functions as those shown in FIG. 2 are referred to with the same reference numerals. In the embodiment shown in FIG. 4, the DC converter 202 of FIG. 2 is separated into two series of DC converters 202 a and 202 b, and functions independently for lighting the LED and charging the secondary battery 210, respectively. ing. In addition, the point which also shows the secondary battery 210 for description is the same as that of 1st Embodiment. In the embodiment, the power supply device 200 and the secondary battery 210 are described as being disposed on the substrates 102 and 152. In other embodiments, only the secondary battery 210 may be disposed on the substrate, and the power supply device 200 may be disposed separately from the LED lighting device. Moreover, it can also be comprised as a power supply package integrated with the power supply device 200 and the secondary battery. In this embodiment, any type of LED lighting device can function as an emergency light.

  Also in the embodiment shown in FIG. 4, the voltage comparison unit 205 compares the charging voltage with the output voltage of the secondary battery 210, and determines the drive voltage of the LED array 208 from the secondary battery 210 side according to the comparison result. It is possible to apply.

FIG. 5 is a diagram for explaining the charging operation and the lighting operation of the LED array 208 according to the present embodiment in association with the output voltage _Vout of the comparator 301. The charging operation of the LED lighting devices 100 and 150 is performed at the time of purchase and when the commercial power supply is turned on. Regarding this period, the power supply from the secondary battery 210 is useless. Since the secondary battery 210 is charged at the same time during normal lighting by a commercial power supply, the power supply device of this embodiment does not have to be driven in the charging mode.

When a Li ion battery is used as the secondary battery, the rated output voltage is 3.7 to 3.8 V, and the voltage decreases according to the discharge. On the other hand, in the charging operation, in many cases, a constant current charging operation with a charging voltage Vin at least equal to or higher than the output voltage of the secondary battery is initially performed, and thereafter a constant voltage charging of 4.1 to 4.2 V is performed. The output voltage V _{out of the} secondary battery is given as a value equal to V _ref . In the embodiment shown in FIG. 5, in FIG. 5A, when charging is started, the charging voltage V _in immediately exceeds V _ref , so that the output voltage V _out of the comparator 301 transitions to 0 V, and the secondary voltage The LED array 208 is not driven by the battery 210.

On the other hand, when the charging mode ends, the charging voltage transitions to 0 V, and the condition of V _in <V _ref is satisfied. Therefore, as shown in FIG. 5B, the comparator 301 sets the output voltage to V _ref . The state is transitioned to This charging termination operation occurs when the switch unit 201 is switched, the LED lighting device 100 is disconnected from the commercial power source, the charging control unit 207 is turned off, or the commercial power source is shut off. At this time, if the switch unit 209 is turned off, the LED array 208 is not lit.

  Further, when functioning as an emergency light, the user intentionally turns on the switch unit 209. In this state, as soon as the charging voltage becomes 0 V, the drive voltage is applied from the secondary battery 110 to the LED array 208, so that the LED array 208 is turned on, and the LED illumination device 100 is turned on in response to an unexpected interruption of the commercial power supply. To do. When the charging operation is stopped to prevent overcharge, the output voltage of the DC-DC conversion unit 203 is set so that power is not supplied from the secondary battery 210 as described in FIG. Use of a diode or the like for preventing overcurrent can prevent wasteful power supply.

  FIG. 6 is a functional block diagram showing a third embodiment of the power supply device 600 of the present embodiment. The configuration excluding the secondary battery from FIG. 6 is an embodiment of the power supply device, and the entire FIG. 6 corresponds to the configuration of the power supply package. In many cases, indoor lighting is configured to turn on a power-stopping light so that the location of the switch can be seen when the lamp is turned off. In 3rd Embodiment, while functioning as an indoor illumination lamp, the function which turns on automatically at the time of a power failure is provided. In FIG. 6, the DC converter 601, the charging controller 602, the DC-DC converter 603, the secondary battery 605, and the LED array 610 are the same as described in the first embodiment. Further, the secondary battery 605 is described for the sake of explanation, and is not an essential configuration for configuring the power supply device 600. Furthermore, the power supply device 600 and the secondary battery 605 do not need to be disposed on the substrates 102 and 152. In other embodiments, only the secondary battery 605 is disposed on the substrate, and the power supply device 200 includes an LED. It is also possible to configure as an independent device separated from the lighting device. Further, the power supply device 600 and the secondary battery 605 may be integrated as a power supply package regardless of the LED lighting device. In this embodiment, any type of LED lighting device can function as an emergency light.

  The embodiment of FIG. 6 includes a voltage comparison unit 604 for comparing voltage changes due to a power failure, a power failure automatic lighting unit 606 that automatically turns on when a power failure is determined, and an LED lighting circuit 608. This is different from the LED lighting device 100 shown in the first embodiment. The voltage comparison unit 604 is a member that compares the probe voltage with the charging voltage for charging the secondary battery 110 or the probe voltage with the ground voltage.

  The LED array 610 is subjected to lighting control using a so-called firefly switch 611 and a switch unit 607 that are attached to a wall surface or the like. The firefly switch 611 has a function of turning on when the switch is turned off and turning off when the switch is turned on, and can include an internal resistance and a light emitting element (firefly lamp) such as an LED. When the firefly switch 611 is OFF, a current flows through the path on the left hand side in FIG. 6, and when it is ON, a current flows through the path on the right hand side in FIG. When the firefly switch 611 is OFF, a weak current flows, but the DC-DC converter 603 cannot be operated and the LED cannot be turned on.

  In addition, the power supply apparatus 600 includes a firefly potential generation unit 612 that indicates that the firefly switch 611 is turned off. Note that the fire potential generating unit 612 illustrated in FIG. 6 only illustrates the most essential configuration, and it is needless to say that it can be mounted as a module such as a board or an IC. The firefly potential generator 612 includes a diode (a diode bridge capable of full-wave rectification), a capacitor, and a capacitor. A low current flows when the firefly switch 611 is OFF. The firefly bulb is emitting light so that it can indicate the position of the switch.

  At this time, if the firefly lamp is composed of LEDs, a current of approximately several mA flows. At this time, the firefly potential generation unit 612 includes a capacitor having a capacitance C, and the capacitor is charged up to the charge Q by the potential divided by the voltage dividing resistor and approximately in the relationship represented by the following formula (1). .

  In the above formula, V (t) is a potential applied to the upstream side of the capacitance of the firefly potential generation unit 612, and the potential of the capacitor of the following formula (2) becomes the fire potential HV.

  The firefly potential HV is a probe indicating that the commercial power supply VAC is normal during a period in which the commercial power supply is normally supplied, regardless of whether the firefly lamp is lit or not. Provides potential. The probe potential is input to the voltage comparison unit 604. The power supply path to the LED array 610 is switched by controlling the automatic lighting unit 606 at the time of a power failure. Thereby, the LED array 610 emits light, and the LED lighting devices 100 and 150 according to the present embodiment function as an emergency light.

  FIG. 7 is an embodiment of a circuit configuration of the voltage comparison unit 604 and the automatic lighting unit 606 at the time of power failure in the present embodiment. The probe voltage is a firefly potential generated by the output voltage of the secondary battery or a weak current for turning on the light emitting element for recognizing the position of the switch when the switch is turned off. The fire potential HV, which is a probe voltage, is input to each of the two OR gates via a voltage dividing resistor. When the firefly potential (probe potential) HV has a potential indicating that the commercial power supply is normal, the OR gate 701 is asserted to L, and the firefly potential HV is a power failure potential (for example, ground potential). Are asserted high and they are all driven by the secondary battery.

  The automatic lighting unit 606 at the time of power failure can be configured to include a transistor 703, an inverter 704, and an FET 705. When the fired potential HV is a normal potential, the transistor 703 is turned off without asserting the power failure state, and the LED lighting circuit 608 is supplied with power from the DC-DC converter 603. At this time, since the fire potential HV itself does not operate the DC-DC converter 603, the DC-DC converter 603 does not operate, and the LED lighting circuit 608 does not operate. 610 also does not light up.

  At the time of a power failure, in response to the comparison with the probe voltage, the transistor 703 asserts a power failure state and turns on. As a result, the FET 705 is closed, the LED lighting circuit 608 is supplied with power from the secondary battery 605, and turns on the LED array 610 as an emergency light. In the case of an indoor light or emergency light application, if the switch unit 607 is closed and connected, when the commercial power supply is normal, the power supply from the secondary battery 605 is caused by the action of the fire potential HV. Instead, the LED array 610 emits light by supplying power from the trademark power supply.

  In addition, at the time of a power failure, the commercial power supply does not supply current, while on the other hand, the power supply from the secondary battery 605 is started by the automatic power-on control at the time of power failure by the automatic lighting unit 606 at the time of power failure due to the fire potential HV. Both the indoor and emergency lights can be switched smoothly without receiving power from the route. At this time, if there is no person at the time of a power failure and the light is turned off, it does not function as an emergency light.

  FIG. 8 summarizes the lighting state of the LED lighting device in the present embodiment. In the present embodiment, there are three states of the LED lighting device, and the light emission state of the LED array 610 at that time is lit (O) when turned on, turned off (X) when turned off (firefly switch OFF), Then, the lighting (O) operation is performed at the time of a power failure. For this reason, in the event of a power failure at night or when power is lost in a tunnel or shopping district, it automatically turns on and effectively functions as an emergency light.

  As described above, according to the present invention, it is possible to immediately replace a conventional installation type illumination device, and to provide an installation type LED illumination device that automatically functions as an emergency light during a power failure and a power supply device therefor. In addition, the installation type LED lighting apparatus of this embodiment is not limited to home and leisure use, but may cause inconvenience due to sudden commercial power cut off such as underground shopping streets / underpasses / tunnels, subways, runways, heliports, etc. It can also be used as a lighting device with low power consumption for buildings and structures.

  Furthermore, according to various purposes, the shape, the number of LEDs, the light emitting area, the capacity or the number of secondary batteries, and the like can be appropriately selected according to a specific purpose.

Although the present invention has been described with the embodiments shown in the drawings, the present invention is not limited to the embodiments shown in the drawings, and other embodiments, additions, modifications, deletions, etc. It can be changed within the range that can be conceived by a trader, and any embodiment is included in the scope of the present invention as long as the effects and effects of the present invention are exhibited.

Claims (8)

A plurality of LEDs;
Secondary battery means for operating the LED when there is no power supply from a commercial power source;
A power supply device that supplies direct current power converted from a commercial power source to the LED when the commercial power source is normal, and supplies direct current power from a secondary battery charged when the commercial power source is normal to the LED when the commercial power source is abnormal; ,
The power supply device
DC driving means for driving the LED and charging the secondary battery;
Comparing means for comparing the probe voltage and the threshold voltage, voltage comparing means for detecting an abnormality of the commercial power supply,
A power failure automatic lighting means for supplying power from the secondary battery to the LED lighting circuit when the voltage comparison means indicates a power failure of the commercial power supply,
The said voltage comparison part is an LED illuminating device which makes the said LED light by outputting the electric power of the said secondary battery to the said LED in response to the comparison with the said probe voltage at the time of abnormality of a commercial power source.   2. The LED illumination according to claim 1, wherein the probe voltage is a firefly potential generated by a weak current for turning on a light emitting element for recognizing a switch position when the output voltage of the secondary battery or the switch is turned off. apparatus.   The LED lighting device according to claim 1, wherein the voltage comparison unit includes a gate array that detects disappearance of a firefly potential and asserts a power failure signal. A power supply device that controls lighting of an LED for illumination,
DC driving means for driving the LED and charging the secondary battery for driving the LED when a commercial power supply is abnormal;
Voltage comparison means comprising gate means for comparing the probe voltage and the threshold voltage, and detecting an abnormality of the commercial power supply;
A power failure automatic lighting means for supplying power from the secondary battery to the LED lighting circuit when the voltage comparison means indicates a power failure of the commercial power supply,
When the commercial power supply is normal, DC power converted from the commercial power supply is supplied to the LED, and when the commercial power supply is abnormal, the secondary battery power is output to the LED in response to the comparison with the probe voltage. A power supply device for lighting the LED.   5. The power supply device according to claim 4, wherein the probe voltage is a fired potential generated by a weak current for lighting a light emitting element for recognizing a position of the switch when the output voltage of the secondary battery or the switch is turned off. .   The power supply apparatus according to claim 4, wherein the voltage comparison unit includes a gate array that detects disappearance of a fire potential and asserts a power failure signal.   The said LED is a power supply device of any one of Claims 4-6 arrange | positioned at the LED lighting apparatus isolate | separated from the said power supply device.   The power supply package for LED arrays containing the power supply device of any one of Claims 4-6, and the secondary battery connected to the said power supply device.