JP2011146294A - Lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device capable of attaining power-saving of power to be consumed by light-emission of a plurality of LEDs connected in series. <P>SOLUTION: The lighting device 10A has a solar battery panel 12, a storage battery 14, an illuminance sensor 13, a voltmeter 15, a lighting fixture 11 formed by the plurality of LEDs connected in series, and a controller 16 for adjusting brightness of these LEDs. The controller 16 is formed by a pulsating power generation section for generating pulsating power by rectifying AC input power, an output power generation section for generating output power with a designated waveform by adding an AC component to a pulsating component of the pulsating power, a power variation section which makes use of a PWM signal and varies the output power generated by the output power generation section at designated frequency and a designated output level, and a resonant output section for retaining the frequency of the output power output from the output power generation section at a resonant frequency by being varied by the power variation section and outputting the output power retained at the resonant frequency to the LEDs. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lighting device using a plurality of LEDs (light emitting diodes).

  A plurality of LEDs connected in series and a fluorescent lamp ballast connected in series between an AC power source and a rectifier, and the total amount of forward voltage drop due to these LEDs is compatible with the fluorescent lamp ballast. There is an AC LED lighting circuit in which the number of LEDs is adjusted so as to correspond to the lighting voltage and the resistance is not connected in series (see Patent Document 1). The total amount of forward voltage drop due to these LEDs is set to 1 or more times the lighting voltage of the compatible lamp in the fluorescent light ballast. This AC LED lighting circuit can be simplified in structure, reduced in manufacturing cost, and improved in power supply efficiency.

JP 2009-238579 A

  Since the AC LED lighting circuit disclosed in Patent Document 1 uses only a commercial power source for light emission of the LED, it is not possible to achieve power saving in the circuit as compared with the case of using power generated by solar power generation. In addition, since the amount of light emitted from the LEDs connected in series cannot be adjusted, the interior of the room where the LEDs are installed cannot be made to have suitable brightness, and the LEDs are always output at 100% output level. Since the light is emitted, the power consumption of the LEDs cannot be reduced, and the power consumed for the light emission of the LEDs cannot be reduced. Furthermore, this AC LED lighting circuit is provided with a brightness more than necessary from the LEDs during the daytime when the illuminance of the room can be sufficiently secured by sunlight, and the room is moderately lighted including sunlight. It cannot be kept at high brightness.

  The objective of this invention is providing the illuminating device which can adjust the power consumption in several LED connected in series, and can aim at the power saving of the electric power consumed by light emission of these LED. . Another object of the present invention is to provide an illuminating device that can adjust the light emission amount of a plurality of LEDs connected in series, and can make a predetermined space that needs illumination have optimum brightness. It is in.

  An illuminating device according to the present invention for solving the above-mentioned problems is formed by a solar cell panel, a storage battery that stores electricity generated by the solar cell panel, and a plurality of LEDs (light emitting diodes) connected in series. And a controller that adjusts the brightness of the LEDs while supplying power necessary for light emission of the LEDs from the storage battery, and the controller is output from the storage battery. AC input power generator that converts the DC electricity into AC input power, a pulsating power generator that rectifies the AC input power to generate pulsating power, An output power generation unit that generates an output power having a predetermined waveform by adding components, and a PWM signal, and the output power generated by the output power generation unit is set to a predetermined frequency and a predetermined level The power variable unit that varies to the power level, and the output power frequency that is varied by the power variable unit and output from the output power generation unit modulates the frequency of the output power to the resonance frequency so that the resonance condition in the lighting fixture is satisfied. And a resonant output unit that outputs the output power held in the LED to those LEDs of the lighting fixture.

  As an example of the present invention, the lighting device includes an illuminance sensor that measures the illuminance at a location where the solar cell panel is installed and outputs the measured illuminance to the controller, and the controller is proportional to the illuminance output from the illuminance sensor. Variable the output level of output power.

  As another example of the present invention, based on the illuminance output from the illuminance sensor, the controller charges the storage battery from the solar battery panel, and the lighting operation turns on the LEDs with the power stored in the storage battery. Do at least one.

  As another example of the present invention, the lighting device includes a voltmeter that outputs the measured generated voltage to the controller while measuring the generated voltage of the solar panel, and the controller converts the generated voltage to the generated voltage output from the voltmeter. The output level of output power is varied in proportion.

  As another example of the present invention, the controller turns on the LEDs by the charging operation in which the storage battery is charged from the solar battery panel based on the generated voltage of the solar battery panel output from the voltmeter, and the power stored in the storage battery. At least one of the lighting operation to be performed is executed.

  As another example of the present invention, the lighting device includes a voltmeter that outputs the measured storage voltage to the controller while measuring the storage voltage of the storage battery, and the controller is based on the storage voltage output from the voltmeter, Execute at least one of storage battery operation that introduces DC input power from the storage battery and lights the LED with the DC input power, and external power operation that introduces AC input power from the external power supply and lights the LED with the AC input power To do.

  As another example of the present invention, the frequency of the output power can be varied in the range of 16 kHz to 20 kHz in the power varying unit of the controller.

  As another example of the present invention, the number of LEDs connected in series in a lighting fixture is in the range of 100 to 180.

  According to the lighting device of the present invention, the direct current electricity output from the storage battery is converted into alternating current input power, and the alternating current component of the alternating current input power is added to the pulsating flow component of the rectified pulsating current. The output power of a predetermined frequency having a predetermined waveform and a predetermined output level is generated, and the output power is output to a plurality of LEDs connected in series in a state where the output power is held at a resonance frequency that resonates the lighting fixture. The power consumption in the LEDs can be adjusted, and the power consumed for the light emission of the LEDs can be reduced. Furthermore, since the electric power generated by the solar cell panel is used for the light emission of the LED, significant power saving can be achieved as compared with the case where only the commercial power source is used for the light emission of the LED. The illuminating device can vary the light emission amount of these LEDs in a range of 0 to 100%, and can make a predetermined space requiring illumination an optimum brightness. Since this illuminating device adds an alternating current component to the pulsating current component, the alternating current component can prevent a voltage drop of the pulsating power and can supply stable power to a plurality of LEDs connected in series. Moreover, since the output power output to these LEDs is held at the resonance frequency, the output power can be controlled without load, and loss of output power can be prevented.

  An illuminating device that includes an illuminance sensor that measures illuminance at a location where a solar cell panel is installed, and in which the controller varies the output level of output power in proportion to the measured illuminance output from the illuminance sensor, has a photovoltaic power generation panel installed By adjusting the light emission amount of these LEDs according to the external brightness, it is possible to reduce the light emission amount of the LED during the day when the illuminance of the space such as the room can be sufficiently secured by sunlight, The space where the lighting fixture is installed can be kept at an appropriate brightness including sunlight. In addition, the amount of light emitted from these LEDs can be increased at night when brightness is required, and the space can be kept sufficiently bright at night.

  Based on the measured illuminance output from the illuminance sensor, the lighting device that executes at least one of the charging operation in which the controller charges the storage battery from the solar battery panel and the lighting operation in which the LEDs are turned on by the electric power stored in the storage battery, for example, When the measured illuminance output from the illuminance sensor is smaller than the set illuminance range, it is determined that charging is not possible and lighting is necessary, and a lighting operation is performed in which the LED is lit by the power stored in the storage battery. If it is within the range, it is determined that charging is possible and lighting is necessary, charging operation and lighting operation for charging the storage battery from the solar battery panel are performed, and charging is possible and lighting when the measured illuminance is greater than the set illuminance range Judgment is unnecessary and charging operation is performed. As described above, at least one of the charging operation and the lighting operation can be selected and executed according to the illuminance output from the illuminance sensor.

  A lighting device that includes a voltmeter that measures the power generation voltage of the solar panel, and in which the controller varies the output level of the output power in proportion to the power generation voltage output from the voltmeter. By adjusting the amount of light emitted from the LED, the amount of light emitted from the LED can be reduced during the daytime when the illuminance of a room or the like can be sufficiently secured by sunlight. Appropriate brightness including light can be maintained. In addition, the amount of light emitted from these LEDs can be increased at night when brightness is required, and the space can be kept sufficiently bright at night.

  Lighting that performs at least one of a charging operation in which the controller charges the storage battery from the solar cell panel and a lighting operation in which the LEDs are turned on by the electric power stored in the storage battery, based on the generated voltage of the solar panel output from the voltmeter For example, when the generated voltage output from the voltmeter is smaller than the set voltage range, the device determines that charging is not possible and lighting is necessary, and performs a lighting operation in which the LED is turned on by the power stored in the storage battery. Is within the set voltage range, it is determined that charging is possible and lighting is necessary, charging operation and lighting operation for charging the storage battery from the solar battery panel are performed, and furthermore, when the generated voltage is larger than the set voltage range, It is determined that charging is possible and lighting is not necessary, and charging operation is performed. In this way, at least one of the charging operation and the lighting operation can be selected and executed by the generated voltage output from the voltmeter.

  Includes a voltmeter to measure the storage voltage of the storage battery, and based on the storage voltage output from the voltmeter, the controller turns on the LED with the DC input power of the storage battery and the external to turn on the LED with the AC input power of the external power supply The lighting device that executes at least one of the power supply operation determines the amount of power stored in the storage battery based on the storage voltage output from the voltmeter, and uses only the storage battery when the storage battery stores enough power. Therefore, it is not necessary to use an external power source (commercial power source), and significant power saving can be achieved. In addition, when power is not sufficiently stored in the storage battery, the LED is turned on using an external power source, so that it is possible to prevent the LED from being turned off due to power shortage.

  The lighting device capable of changing the frequency of the output power in the range of 16 kHz to 20 kHz outputs high frequency output power to the LEDs, so that the light emission of the LEDs is stabilized and flicker does not occur in the LEDs. The space where the lighting equipment is installed can be kept at a comfortable brightness.

  The lighting device in which the number of LEDs connected in series in the lighting fixture is in the range of 100 to 180, and the light is supplied to the space where the lighting fixture is installed by the plurality of LEDs, so that the space is kept sufficiently bright. In addition to being able to add an alternating current component to the pulsating flow component and preventing a voltage drop of the pulsating flow power due to the alternating current component, it is possible to supply stable power necessary for the light emission to the plurality of LEDs, Insufficient issuance of these LEDs can be prevented. This illuminating device can adjust the issuing amount of these several LED separately, and can maintain a space in moderate brightness.

The block diagram of the illuminating device shown as an example. The circuit diagram of a lighting fixture. The block diagram of the controller shown as an example. 4a shows an example of the output power waveform, FIG. 4b shows an example of the output power waveform, FIG. 4c shows an example of the output power waveform, and FIG. 4d shows an example of the output power waveform. FIG. The block diagram of the illuminating device shown as another example.

  The details of the lighting device according to the present invention will be described with reference to the accompanying drawings such as FIG. 1 which is a block diagram of the lighting device 10A shown as an example. 2 is a circuit diagram of the lighting fixture 11 shown as an example, and FIG. 3 is a block diagram of the controller 16 shown as an example. 4a to 4d are diagrams illustrating an example of a waveform of output power output to the LED 19 (light emitting diode). The illuminating device 10A is formed of a luminaire 11, a solar cell panel 12, an illuminance sensor 13, a storage battery 14, a voltmeter 15, and a controller 16. An infrared remote controller 17 (remote controller) is attached, and an external power source 18 (commercial power source). Is connected.

  The luminaire 11 uses a plurality of LEDs 19 (light emitting diodes) as the light emitting elements. The luminaire 11 is installed on a ceiling, a wall, a pillar, or the like of a space 20 such as a room or an underground building that requires lighting. In addition, the space 20 in which the lighting fixture 11 is installed is not limited to a room or an underground building, and the lighting fixture 11 can also be installed outdoors (outside). The luminaire 11 is connected to the controller 16 via an interface (electric wire). As shown in FIG. 2, the LED 19 has a plurality of them connected in series, and the number of series connections is in the range of 100 to 180, preferably in the range of 130 to 160. The LEDs 19 emit light when a predetermined power is supplied, and emit light to the space 20.

  The solar cell panel 12 is installed outdoors and connected to the storage battery 14 via an interface (electric wire). The solar cell panel 12 outputs DC power generated by sunlight to the storage battery 14. The solar cell panel 12 includes a silicon type such as a single crystal silicon type, a polycrystalline silicon type, a microcrystalline silicon type, an amorphous silicon type, an InGaAs solar cell, a GaAs solar cell, a CIS solar cell, a CU2ZnSnS4 (CZTS) solar cell, Compound systems such as CdTe-CdS solar cells, and organic systems such as dye-sensitized solar cells and organic thin film solar cells can be used. A thin film silicon type, a hybrid type, a multi-junction type, a spherical silicon type, or the like can also be used.

  The illuminance sensor 13 is installed at a location (outdoors) close to the solar cell panel 12 and is connected to the controller 16 via an interface. The illuminance sensor 13 measures the illuminance at the place where the solar battery panel 12 is installed, converts the measured illuminance into a current value or a voltage value, and outputs the measured current value or the measured voltage value to the controller 16.

  The storage battery 14 is connected to the controller 16 via an interface (electric wire). The storage battery 14 stores (charges) the DC electricity generated by the solar cell panel 12 and outputs (discharges) the stored DC electricity to the controller 16. The storage battery 14 may be a general type such as a lead storage battery, lithium ion secondary battery, lithium ion polymer secondary battery, nickel / hydrogen storage battery, nickel cadmium storage battery, redox flow battery, zinc / chlorine battery, zinc / bromine battery, etc. Liquid circulation type, mechanical charge type such as aluminum / air battery, air / zinc battery, air / iron battery, and high temperature operation type such as sodium / sulfur battery and lithium / sulfide battery can be used.

  The voltmeter 15 is connected to the controller 16 via an interface. The voltmeter 15 measures the voltage of the storage battery 14 and outputs the measured storage voltage of the storage battery 14 to the controller 16. The infrared remote controller 17 is used for ON / OFF operation of the illumination device 11 and output operation of the LED 19. An infrared signal is oscillated from the remote controller 17 toward a light receiving element (not shown) of the controller 16, and the ON / OFF of the illumination device 10A and the output of the LED 19 are operated by the infrared signal.

  The controller 16 adjusts (dimming) the brightness of the LEDs 19 while supplying power necessary for the light emission of the LEDs 19. The controller 16 includes an AC input power generation unit 21, a pulsating power generation unit 22, an output power generation unit 23, a power variable unit 24, and a resonance output unit 25. The controller 16 includes a computer (not shown) having a central processing unit (CPU or MPU) and a memory (storage unit), and an input device (not shown) for inputting each set value and each set value. A display device (not shown) for displaying is connected.

  In the memory of the computer, direct current input power is introduced from the storage battery 14 and the direct current input power is used for lighting the LED 19, and the alternating current input power is introduced from the external power supply 18 to turn on the LED 19. The set voltage of the storage battery 14 in the case of performing at least one of the external power supply operation to be used is stored. The set voltage of the storage battery 14 can be confirmed by the display device and can be changed by the input device. In the memory of the computer, a set illuminance (set current value) when performing at least one of a charging operation for charging the storage battery 14 from the solar battery panel 12 and a lighting operation for turning on the LEDs 19 by the electric power stored in the storage battery 14. Or a set voltage value) is stored. The set illuminance can be confirmed by the display device and can be changed by the input device.

  In the computer memory, the correlation between the measured illuminance output from the illuminance sensor 13 (the value obtained by converting the illuminance by the sensor 13 into a current value or voltage value) and the output of the LED 19, and the output of the LED 19 and the output of the LED 19 emit light. The correlation with the output power to be stored is stored. The correlation between the illuminance and the output of the LED 19 and the correlation between the output of the LED 19 and the output power for causing the LED 19 to emit light by the output can be confirmed by the display device and can be changed by the input device.

  The memory of the computer stores a set frequency of output power to be output to the luminaire 11 and a resonance frequency that causes the luminaire 11 to resonate. The set frequency and resonance frequency of the output power can be confirmed by the display device and can be changed by the input device. The set frequency of the output power can be changed in the range of 16 kHz to 20 kHz.

  The computer built in the controller 16 executes either the storage battery operation or the external power supply operation while referring to the storage voltage of the storage battery 14 output from the voltmeter 15 and the set voltage of the storage battery 14, or those Perform both driving. Furthermore, either charging operation or lighting operation is executed while referring to the measured illuminance (measured current value or measured voltage value) and the set illuminance (set current value or set voltage value) output from the illuminance sensor 13. Or both of these operations are executed.

  The computer of the controller 16 determines the output (issue amount) of the LED 19 corresponding to the measured illuminance (measured current value or measured voltage value) output from the illuminance sensor 13 based on the correlation between the illuminance and the LED output. At the same time, based on the correlation between the output of the LED 19 and the output power for causing the LED 19 to emit light with the output, the output power for causing the LED 19 to emit light with the determined output is determined, and the determined output power is supplied to the LED 19. . Further, the computer of the controller 16 adjusts the output (issue amount) of the LED 19 based on an instruction from the remote controller 17.

  The AC input power generation unit 21 of the controller 16 converts the DC electricity output from the storage battery 14 into AC input power, and outputs the converted AC input power to the pulsating power generation unit 22. The pulsating power generation unit 22 smoothes the negative value of the AC input power passing through the smoothing circuit to a positive value, and is input from the AC input power input from the AC input power generation unit 21 or the external power source 18. The AC input power is rectified to generate pulsating power. The output power generation unit 23 controls the switching speed while realizing a current loop circuit, and generates output power having a predetermined waveform by adding the AC component of the AC input power to the pulsating component of the pulsating power.

  The power variable unit 24 of the controller 16 uses the PWM signal to vary the output power generated by the output power generation unit 23 to a predetermined frequency and a predetermined output level. The power varying unit 24 varies the output level of the output power in proportion to the measured illuminance (measured current value or measured voltage value) output from the illuminance sensor 13 or the output of the LED 19 instructed from the remote controller 17. The output level of output power is varied in proportion to The power variable unit 24 varies the frequency of the output power in the range of 16 kHz to 20 kHz. The resonance output unit 25 modulates the frequency of the output power to the resonance frequency so that the output power that is varied by the power variable unit 24 and output from the output power generation unit 23 satisfies the resonance condition of the lighting fixture 11 (load circuit). The output power held at the resonance frequency is output to the LEDs 19 of the lighting fixture 11.

  Hereinafter, the operation of the illumination device 10A will be described. The lighting device 10A is activated by the remote controller 17, or the lighting device 10A is turned on to activate the device 10A. When the lighting device 10A is activated, AC input power is supplied from the storage battery 14 and the external power source 18 to the lighting device 10A (including the illuminance sensor 13 and the voltmeter 15), and the illuminance sensor 13 and the voltmeter 15 are activated. The illuminance sensor 13 measures the illuminance at the location (outdoor) where the solar cell panel 12 is installed, converts the measured illuminance into a current value or a voltage value, and outputs the converted measured current value or measured voltage value to the controller 16. The voltmeter 15 measures the voltage of the storage battery 14 and outputs the measured storage voltage of the storage battery 14 to the controller 16. In addition, if the output (issue amount) of LED19 is instruct | indicated from the remote controller 17, the controller 16 will adjust the output (issue amount) of LED19 based on the instruction | indication.

  The controller 16 compares the storage voltage of the storage battery 14 output from the voltmeter 15 and the set voltage of the storage battery 14, and if the storage voltage is at the maximum in the range of the set voltage, the storage battery 14 has sufficiently stored power. Therefore, the storage battery operation is performed in which the DC input power is introduced from the storage battery 14 and the DC input power is used to turn on the LED 19. The controller 16 determines that the storage battery 14 can be discharged when the stored voltage is not within the set voltage range but is within the set voltage range, and determines that the storage battery 14 needs to be charged. While performing the operation, an external power supply operation is performed in which AC input power is introduced from the external power supply 18 and the LED 19 is turned on by the AC input power. When the stored voltage is less than the set voltage range, the controller 16 determines that discharging from the storage battery 14 is impossible, determines that the storage battery 14 needs to be charged, and performs external power supply operation.

  When the storage battery operation is performed, DC power is input from the storage battery 14 to the AC input power generation unit 21 of the controller 16, and the DC power is converted into AC input power by the AC input power generation unit 21, and the AC input power is AC input. The power is generated from the power generator 21 to the pulsating power generator 22. When performing the storage battery operation and the external power supply operation, the DC power is converted into AC input power in the AC input power generation unit 21, and the AC input power is output from the AC input power generation unit 21 to the pulsating power generation unit 22. In addition, AC input power is supplied from the external power supply 18 to the pulsating power generation unit 22. When the external power supply operation is executed, the discharge from the storage battery 14 is stopped, and AC input power is supplied from the external power supply 18 to the pulsating power generation unit 22.

  The controller 16 compares the measured illuminance output from the illuminance sensor 13 with the set illuminance, and when the measured illuminance is smaller than the set illuminance range, the power generation amount of the solar battery panel 12 is small and it is determined that charging is impossible. It is determined that the LED 19 needs to be turned on, and a lighting operation for turning on the LED 19 is performed. When the measured illuminance is within the set illuminance range, the controller 16 determines that the power generation amount of the solar battery panel 12 is sufficient and can be charged, determines that the LED 19 needs to be turned on, and charges the storage battery 14 from the panel 12. The charging operation and the lighting operation are performed. When the measured illuminance is larger than the set illuminance range, the controller 16 determines that the power generation amount of the solar battery panel 12 is sufficient and can be charged, determines that the LED 19 is not lit, and performs a charging operation. When the controller 16 determines that only the charging operation is to be performed, the LED 19 is not turned on, and the storage battery 14 is charged with power using the solar battery panel 12. Alternatively, the LED 19 is turned on using the external power source 18 and the storage battery 14 is charged with power using the solar battery panel 12. The illuminating device 10 </ b> A can select and execute at least one of a charging operation and a lighting operation according to the illuminance output from the illuminance sensor 13.

  The controller 16 determines that at least one of the storage battery operation and the external power supply operation is to be executed, and determines that the lighting operation or both the lighting operation and the charging operation are to be executed, and then the set frequency of the output power stored in the memory And the resonance frequency at which the luminaire 11 is resonated, the frequency of the output power is determined in the range of 16 kHz to 20 kHz, and the resonance frequency is determined. The lighting device 10A outputs high-frequency output power of 16 kHz to 20 kHz to the LEDs 19, whereby the light emission of the LEDs 19 is stabilized, flicker does not occur in the LEDs 19, and the space 20 in which the lighting fixture 11 is installed. Can be kept at a comfortable brightness. When both the lighting operation and the charging operation are performed, the storage battery 14 is charged with power using the solar battery panel 12 while the LED 19 is turned on.

  The controller 16 refers to the correlation between the illuminance stored in the memory and the output of the LED 19, applies the measured illuminance to the illuminance stored in the memory in advance, and outputs the LED 19 corresponding to the applied illuminance (0 to 100). %) And the correlation between the output of the LED 19 and the output power for causing the LED 19 to emit light is referred to, and the determined output of the LED 19 is applied to the output stored in the memory in advance. The output power (supply power) corresponding to the output is determined. The controller 16 supplies the determined output power to the LED 19 while setting the determined output power to the set frequency and modulating the determined output power to the resonance frequency of the luminaire 11.

  As an example, when the measured current value output from the illuminance sensor 13 is 4 mA to 20 mA (current value obtained by converting the illuminance), the controller 16 sets the output level within the range of 0% to 100% according to 4 mA to 20 mA. At the same time, the output power corresponding to the determined output level is determined. The output power generation unit 23 of the controller 16 generates output power having a predetermined waveform by combining the pulsating flow component of the pulsating flow power output from the pulsating flow power generation unit 22 and the alternating current component of the alternating current input power. The power variable unit 24 uses the PWM signal to convert the output power generated by the output power generation unit 23 into output power having a predetermined frequency and a determined output level. The resonance output unit 25 converts the output power, which is converted to the predetermined frequency and the output level determined by the power variable unit 24 and output from the output power generation unit 23, to the resonance frequency of the lighting fixture 11, and the output power thereof. It supplies to LED19. The LED 19 emits light at an output (issue amount) corresponding to the supplied output power (power amount).

  As another example, when the measured voltage value output from the illuminance sensor 13 is 0 V to 10 V (voltage value obtained by converting the illuminance), the controller 16 ranges the output level from 0% to 100% according to 0 V to 10 V. And the output power corresponding to the determined output level is determined. The output power generation unit 23 of the controller 16 generates output power having a predetermined waveform by combining the pulsating flow component of the pulsating flow power output from the pulsating flow power generation unit 22 and the alternating current component of the alternating current input power. The power variable unit 24 uses the PWM signal to convert the output power generated by the output power generation unit 23 into output power having a predetermined frequency and a determined output level. The resonance output unit 25 converts the output power, which is converted to the predetermined frequency and the output level determined by the power variable unit 24 and output from the output power generation unit 23, to the resonance frequency of the lighting fixture 11, and the output power thereof. It supplies to LED19. The LED 19 emits light at an output (issue amount) corresponding to the supplied output power (power amount).

  FIG. 4a shows a waveform of output power with an output level of 0%. When the output level is 0%, the waveform includes a pulsating flow component and an AC component obtained by rectifying AC input power, but is substantially linear. The output power of the pulsating component is 0 (0 V), and the LED 19 does not emit light. FIG. 4b shows an output power waveform with an output level of 30%. The waveform includes a pulsating flow component L1 and an AC component L2 obtained by rectifying the AC input power, and all LEDs 19 emit light at an output of 30%. . FIG. 4c shows an output power waveform with an output level of 50%. The waveform includes a pulsating flow component L1 and an AC component L2 obtained by rectifying the AC input power, and all LEDs 19 emit light at an output of 50%. . FIG. 4d shows an output power waveform with an output level of 100%. The waveform includes a pulsating flow component L1 and an AC component L2 obtained by rectifying the AC input power, and all LEDs 19 emit light at an output of 100%. . In addition, although the waveform when the output level of the LED is 0%, 30%, 50%, and 100% is illustrated, this lighting device 10A adjusts the output level of the LED 19 steplessly between 0% and 100%. Can do.

  The illuminating device 10A adds the AC component of the AC input power to the AC input power obtained by converting the DC electricity output from the storage battery 14 and the pulsating current component of the pulsating current rectified from the AC input power supplied from the external power source 18. The output power of a predetermined frequency having a predetermined waveform and a predetermined output level is generated, and the output power is output to a plurality of LEDs 19 connected in series in a state where the output power is held at a resonance frequency that causes the lighting fixture 11 to resonate. The power consumption of the LEDs 19 can be adjusted, and the power consumed for the light emission of the LEDs 19 can be reduced. Furthermore, since the electric power generated by the solar cell panel 12 is used for the light emission of the LED 19, it is possible to achieve a significant power saving as compared with the case where only the external power source 18 (commercial power supply) is used for the light emission of the LED 19.

  Since the lighting device 10A varies the light emission amount of the LEDs 19 in a range of 0 to 100%, the predetermined space 20 that needs illumination can be set to an optimal brightness. Since the illuminating device 10A adds an alternating current component to the pulsating flow component, it is possible to prevent a voltage drop of the pulsating flow power due to the alternating current component, and to supply stable power to the plurality of LEDs 19 connected in series. Further, since the output power output to the LEDs 19 is held at the resonance frequency, the output power can be controlled without load, and loss of output power can be prevented.

  Since the illuminating device 10A adjusts the amount of light emitted from the LEDs 19 according to the measured illuminance measured by the illuminance sensor 13 (external brightness where the photovoltaic power generation panel 12 is installed), the illuminance of the space 20 is sufficiently increased by sunlight. The amount of light emitted by the LED 19 can be reduced during the day that can be secured, and the space 20 in which the lighting fixture 11 is installed can be kept at an appropriate brightness including sunlight. Further, the amount of light emitted from the LEDs 19 can be increased at night when brightness is required, and the space 20 can be maintained at sufficient brightness at night.

  The illuminating device 10A determines the amount of power stored in the storage battery 14 based on the storage voltage output from the voltmeter 15. When the power is sufficiently stored in the storage battery 14, the LED 19 is turned on using only the storage battery 14. Therefore, it is not necessary to use the external power source 18, and a significant power saving can be achieved. Moreover, since the LED 19 is turned on using the external power source 18 when the power is not sufficiently stored in the storage battery 14, the non-lighting of the LED 19 due to power shortage can be prevented.

  FIG. 5 is a block diagram of a lighting apparatus 10B shown as another example. The lighting device 10B is formed of a lighting fixture 11, a solar battery panel 12, a storage battery 14, a voltmeter 15, and a controller. An infrared remote controller 17 (remote controller) is attached to the external power source 18 (commercial power source). Yes. The luminaire 11 uses a plurality of LEDs 19 (light emitting diodes) connected in series as the light emitting elements (see FIG. 2). The luminaire 11 is connected to the controller 16 via an interface. The number of LEDs 19 connected in series is the same as that of the illumination device 10A of FIG. The LEDs 19 emit light when a predetermined power is supplied, and supply light to the space 20.

  The solar cell panel 12 is connected to the storage battery 14 via an interface, and outputs DC power generated by sunlight to the storage battery 14. As the solar cell panel 12, the same panel 12 as the lighting device 10A of FIG. 1 is used. The storage battery 14 is connected to the controller 16 via an interface, stores (charges) the DC electricity generated by the solar battery panel 12, and outputs (discharges) the stored DC electricity to the controller 16. As the storage battery 14, the same battery 14 as the lighting device 10 </ b> A of FIG. 1 is used.

  The voltmeter 15 is connected to the controller 16 via an interface. The voltmeter 15 measures the voltage of the storage battery 14, outputs the measured storage voltage of the storage battery 14 to the controller 16, measures the voltage of the solar battery panel 12, and outputs the measured voltage of the panel 12 to the controller 16. To do. The infrared remote controller 17 is used for ON / OFF operation of the lighting device 10B and output operation of the LED 19. An infrared signal is oscillated from the remote controller 17 toward the light receiving element of the controller 16, and the ON / OFF of the illumination device 10B and the output of the LED 19 are operated by the infrared signal.

  The controller 16 adjusts (dimming) the brightness of the LEDs 19 while supplying power necessary for the light emission of the LEDs 19. The controller 16 is formed of an AC input power generation unit 21, a pulsating power generation unit 22, an output power generation unit 23, a power variable unit 24, and a resonance output unit 25 (see FIG. 3). The controller 16 has a built-in computer having a central processing unit (CPU or MPU) and a memory (storage unit), similar to that of the lighting device 10A of FIG. 1, and an input device for inputting each set value and each set value. Is connected to the display device.

  In the memory of the computer, direct current input power is introduced from the storage battery 14 and the direct current input power is used for lighting the LED 19, and the alternating current input power is introduced from the external power supply 18 to turn on the LED 19. The set voltage of the storage battery 14 in the case of performing at least one of the external power supply operation to be used is stored. The set voltage of the storage battery 14 can be confirmed by the display device and can be changed by the input device. In the memory of the computer, a set voltage of the panel 12 when performing at least one of a charging operation for charging the storage battery 14 from the solar battery panel 12 and a lighting operation for turning on the LEDs 19 by the electric power stored in the storage battery 14 is stored. Stored. The set voltage of the solar cell panel 12 can be confirmed by the display device and can be changed by the input device.

  The memory of the computer stores the correlation between the generated voltage of the solar battery panel 12 output from the voltmeter 15 and the output of the LED 19, and the correlation between the output of the LED 19 and the output power for causing the LED 19 to emit light by the output. Has been. The correlation between the generated voltage and the output of the LED 19 and the correlation between the output of the LED 19 and the output power for causing the LED 19 to emit light by the output can be confirmed by the display device and can be changed by the input device.

  The memory of the computer stores a set frequency of output power to be output to the luminaire 11 and a resonance frequency that causes the luminaire 11 to resonate. The set frequency and resonance frequency of the output power can be confirmed by the display device and can be changed by the input device. The set frequency of the output power can be changed in the range of 16 kHz to 20 kHz.

  The computer built in the controller 16 executes either the storage battery operation or the external power supply operation while referring to the storage voltage of the storage battery 14 output from the voltmeter 15 and the set voltage of the storage battery 14, or those Perform both driving. Further, referring to the power generation voltage of the solar battery panel 12 output from the voltmeter 15 and the set voltage of the panel 12, either the charging operation or the lighting operation is executed, or both of these operations are executed. .

  The computer of the controller 16 determines the output (issue amount) of the LED 19 corresponding to the generated voltage output from the voltmeter 15 based on the correlation between the generated voltage of the solar battery panel 12 and the output of the LED 19, and The output power for causing the LED 19 to emit light with the determined output is determined based on the correlation between the output and the output power for causing the LED 19 to emit light with the output, and the determined output power is supplied to the LED 19. Further, the computer of the controller 16 adjusts the output (issue amount) of the LED 19 based on an instruction from the remote controller 17. The functions of the AC input power generation unit 21, the pulsating power generation unit 22, the output power generation unit 23, the power variable unit 24, and the resonance output unit 25 of the controller 16 are the same as those of the controller 16 of FIG. The description of the controller 16 of FIG. 1 is used, and the same reference numerals as those in FIG.

  Hereinafter, the operation of the illumination device 10B will be described. The lighting device 10B is activated by the remote controller 17 or the device 10B is activated by turning on the switch of the lighting device 10B. When the lighting device 10B is activated, AC input power is supplied from the storage battery 14 or the external power source 18 to the lighting device 10B (including the voltmeter 15), and the voltmeter 15 is activated. The voltmeter 15 measures the power generation voltage of the solar battery panel 12, outputs the measured power generation voltage of the panel 12 to the controller 16, measures the voltage of the storage battery 14, and supplies the measured storage voltage of the storage battery 14 to the controller 16. Output. In addition, if the output (issue amount) of LED19 is instruct | indicated from the remote controller 17, the controller 16 will adjust the output (issue amount) of LED19 based on the instruction | indication.

  The controller 16 compares the storage voltage of the storage battery 14 output from the voltmeter 15 and the set voltage of the storage battery 14, and if the storage voltage is at the maximum in the range of the set voltage, the storage battery 14 has sufficiently stored power. Therefore, the storage battery operation is performed in which the DC input power is introduced from the storage battery 14 and the DC input power is used to turn on the LED 19. The controller 16 determines that the storage battery 14 can be discharged when the stored voltage is not within the set voltage range but is within the set voltage range, and determines that the storage battery 14 needs to be charged. While the operation is performed, an external power supply operation is performed in which AC input power is introduced from the external power supply 18 (commercial power supply) and the LED 19 is turned on by the AC input power. When the stored voltage is less than the set voltage range, the controller 16 determines that discharging from the storage battery 14 is impossible, determines that the storage battery 14 needs to be charged, and performs external power supply operation.

  When the storage battery operation is performed, DC power is input from the storage battery 14 to the AC input power generation unit 21 of the controller 16, and the DC power is converted into AC input power by the AC input power generation unit 21, and the AC input power is AC input. The power is generated from the power generator 21 to the pulsating power generator 22. When performing the storage battery operation and the external power supply operation, the DC power is converted into AC input power in the AC input power generation unit 21, and the AC input power is output from the AC input power generation unit 21 to the pulsating power generation unit 22. In addition, AC input power is supplied from the external power supply 18 to the pulsating power generation unit 22. When the external power supply operation is executed, the discharge from the storage battery 14 is stopped, and AC input power is supplied from the external power supply 18 to the pulsating power generation unit 22.

  The controller 16 compares the power generation voltage of the solar battery panel 12 output from the voltmeter 15 with the set voltage of the panel 12, and when the power generation voltage is smaller than the set voltage range, the power generation amount of the panel 12 is small and charging is performed. While judging that it is impossible, it judges that lighting of LED19 is required, and performs the lighting operation which lights LED19. When the generated voltage is within the set voltage range, the controller 16 determines that the amount of power generated by the solar battery panel 12 is sufficient and can be charged, determines that the LED 19 needs to be lit, and charges the storage battery 14 from the panel 12. The charging operation and the lighting operation are performed. When the generated voltage is larger than the set voltage range, the controller 16 determines that the amount of power generated by the solar cell panel 12 is sufficient and can be charged, determines that the LED 19 is not required to be turned on, and performs a charging operation. When the controller 16 determines that only the charging operation is to be performed, the LED 19 is not turned on, and the storage battery 14 is charged with power using the solar battery panel 12. Alternatively, the LED 19 is turned on using the external power source 18 and the storage battery 14 is charged with power using the solar battery panel 12. The illuminating device 10B can select and execute at least one of a charging operation and a lighting operation based on the generated voltage output from the voltmeter 15.

  The controller 16 determines that at least one of the storage battery operation and the external power supply operation is to be executed, and determines that the lighting operation or both the lighting operation and the charging operation are to be executed, and then the set frequency of the output power stored in the memory And the resonance frequency at which the luminaire 11 is resonated, the frequency of the output power is determined in the range of 16 kHz to 20 kHz, and the resonance frequency is determined. The lighting device 10B outputs a high frequency output power of 16 kHz to 20 kHz to the LEDs 19, so that the light emission of the LEDs 19 is stabilized, flicker does not occur in the LEDs 19, and the space 20 in which the lighting fixture 11 is installed. Can be kept at a comfortable brightness. When both the lighting operation and the charging operation are performed, the storage battery 14 is charged with power using the solar battery panel 12 while the LED 19 is turned on.

  The controller 16 refers to the correlation between the voltage stored in the memory and the output of the LED 19, applies the generated voltage to the voltage stored in advance in the memory, and outputs the LED 19 corresponding to the applied voltage (0 to 100). %) And the correlation between the output of the LED 19 and the output power for causing the LED 19 to emit light is referred to, and the determined output of the LED 19 is applied to the output stored in the memory in advance. The output power (supply power) corresponding to the output is determined. The controller 16 supplies the determined output power to the LED 19 while setting the determined output power to the set frequency and modulating the determined output power to the resonance frequency of the luminaire 11. In addition, the waveform of the output electric power in this illuminating device 10B is the same as that of 10 A of illuminating devices of FIG. 1 (refer FIG. 4 a-FIG. 4 d).

  As an example, the controller 16 determines the output level in the range of 0% to 100% in accordance with 0V to 80V when the power generation voltage of the solar cell panel 12 output from the voltmeter 15 is 0V to 80V. The output power corresponding to the determined output level is determined. The output power generation unit 23 of the controller 16 generates output power having a predetermined waveform by combining the pulsating flow component of the pulsating flow power output from the pulsating flow power generation unit 22 and the alternating current component of the alternating current input power. The power variable unit 24 uses the PWM signal to convert the output power generated by the output power generation unit 23 into output power having a predetermined frequency and a determined output level. The resonance output unit 25 converts the output power, which is converted to the predetermined frequency and the output level determined by the power variable unit 24 and output from the output power generation unit 23, to the resonance frequency of the lighting fixture 11, and the output power thereof. It supplies to LED19. The LED 19 emits light at an output (issue amount) corresponding to the supplied output power (power amount).

  The lighting device 10B adds the AC component of the AC input power to the AC input power obtained by converting the DC electricity output from the storage battery 14 and the pulsating current component of the pulsating current rectified from the AC input power supplied from the external power source 18. The output power of a predetermined frequency having a predetermined waveform and a predetermined output level is generated, and the output power is output to a plurality of LEDs 19 connected in series in a state where the output power is held at a resonance frequency that causes the lighting fixture 11 to resonate. The power consumption of the LEDs 19 can be adjusted, and the power consumed for the light emission of the LEDs 19 can be reduced. Furthermore, since the electric power generated by the solar cell panel 12 is used for the light emission of the LED 19, it is possible to achieve a significant power saving as compared with the case where only the external power source 18 (commercial power supply) is used for the light emission of the LED 19.

  The illuminating device 10B can vary the light emission amount of the LEDs 19 in a range of 0 to 100%, and can make the predetermined space 20 that needs illumination have an optimal brightness. Since the illuminating device 10B adds an alternating current component to the pulsating flow component, it is possible to prevent a voltage drop of the pulsating flow power due to the alternating current component, and to supply stable power to the plurality of LEDs 19 connected in series. Further, since the output power output to the LEDs 19 is held at the resonance frequency, the output power can be controlled without load, and loss of output power can be prevented.

  The lighting device 10B adjusts the light emission amount of the LEDs 19 according to the generated voltage of the photovoltaic power generation panel 12 (external brightness where the panel 12 is installed). The amount of light emitted by the LED 19 can be reduced during the day that can be secured, and the space 20 in which the lighting fixture 11 is installed can be kept at an appropriate brightness including sunlight. Further, the amount of light emitted from the LEDs 19 can be increased at night when brightness is required, and the space 20 can be maintained at sufficient brightness at night.

  The lighting device 10B determines the amount of power stored in the storage battery 14 based on the storage voltage output from the voltmeter 15, and when the storage battery 14 has sufficient power stored, the LED 19 is turned on using only the storage battery 14. Therefore, it is not necessary to use the external power source 18 (commercial power source), and significant power saving can be achieved. Moreover, since the LED 19 is turned on using the external power source 18 when the power is not sufficiently stored in the storage battery 14, the non-lighting of the LED 19 due to power shortage can be prevented.

DESCRIPTION OF SYMBOLS 10A Illuminating device 10B Illuminating device 11 Illuminating fixture 12 Solar cell panel 13 Illuminance sensor 14 Storage battery 15 Voltmeter 16 Controller 17 Infrared remote controller (remote control)
18 External power supply (commercial power supply)
19 LED (Light Emitting Diode)
20 space 21 AC input power generation unit 22 pulsating power generation unit 23 output power generation unit 24 power variable unit 25 resonance output unit

Claims (8)

A solar battery panel; a storage battery that stores electricity generated by the solar battery panel; and a lighting fixture that is formed from a plurality of LEDs (light emitting diodes) connected in series and is installed in a predetermined space that requires illumination; A controller that adjusts the brightness of the LEDs while supplying power necessary for light emission of the LEDs from the storage battery,
The controller includes an AC input power generation unit that converts DC electricity output from the storage battery into AC input power, a pulsating power generation unit that rectifies the AC input power to generate pulsating power, and the pulsating current An output power generation unit that generates an output power having a predetermined waveform by adding the AC component of the AC input power to a pulsating current component of power, and an output power generated by the output power generation unit using a PWM signal A power variable unit that varies to a predetermined frequency and a predetermined output level; and the output power that is varied by the power variable unit and that is output from the output power generation unit so as to satisfy a resonance condition in the lighting fixture. And a resonance output unit that outputs output power held at the resonance frequency to the LEDs of the lighting fixture.   The illumination device includes an illuminance sensor that measures illuminance at a location where the solar cell panel is installed and outputs the measured illuminance to the controller, and the controller is proportional to the illuminance output from the illuminance sensor. The lighting device according to claim 1, wherein the output level of the output power is variable.   Based on the illuminance output from the illuminance sensor, the controller performs at least one of a charging operation in which the storage battery is charged from the solar battery panel and a lighting operation in which the LEDs are turned on by the electric power stored in the storage battery. The lighting device according to claim 2.   The lighting device includes a voltmeter that outputs the measured power generation voltage to the controller while measuring the power generation voltage of the solar panel, and the controller is proportional to the power generation voltage output from the voltmeter. The lighting device according to claim 1, wherein the output level of the output power is variable.   Based on the generated voltage of the solar cell panel output from the voltmeter, the controller charges the storage battery from the solar cell panel, and a lighting operation that turns on the LEDs by the electric power stored in the storage battery The illuminating device according to claim 4, wherein at least one of the following is executed.   The lighting device includes a voltmeter that outputs the measured storage voltage to the controller while measuring the storage voltage of the storage battery, and the controller performs direct current from the storage battery based on the storage voltage output from the voltmeter. At least one of a storage battery operation in which input power is introduced and the LED is lit by the DC input power, and an external power supply operation in which AC input power is introduced from an external power source and the LED is lit by the AC input power is executed. The lighting device according to claim 1.   The lighting device according to any one of claims 1 to 6, wherein a frequency of the output power can be varied in a range of 16 kHz to 20 kHz in the power variable unit of the controller.   The lighting device according to any one of claims 1 to 7, wherein the number of LEDs connected in series in the lighting fixture is in a range of 100 to 180.

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