JP2005228639A - Wind power generating lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wind power generating lighting fixture capable of utilizing effectively energy of electric power generated by performing a control, according to the characteristics of wind power generation, and thus extending the lighting hours of a lighting fixture. <P>SOLUTION: A wind power generating lighting fixture includes a wind turbine generator 3, a lead accumulator 4, a lighting fixture 5, a solar cell 6 or EE switch 7, a controller 8, a first switch 9 provided between the wind turbine generator and the controller, and a second switch 10 and a third switch 11, provided in series between the lighting fixture and the controller. The controller 8 discriminates the daytime and nighttime from the converted voltage of the solar cell 6 and the EE switch 7, and transmits the ON instruction to the first switch 9, if the charge amount of the lead accumulator is at an upper limit value; while transmitting OFF direction to the second switch 10, if the charge amount of the lead accumulator reaches an lower limit value, and transmitting the OFF instruction to the third switch 11 in the case of daytime. A brake mechanism 2 is activated, if the first switch 9 is at ON position. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a wind-powered lighting device that charges a storage battery with electricity generated by a wind power generator and performs illumination at night using the electricity.

In a stand-alone lighting system using natural energy, a lighting battery can be stably turned on regardless of weather conditions by charging a storage battery with electricity generated by a solar battery panel or a wind power generator. As the storage battery, a lead storage battery is generally used in terms of cost and the like. Lead-acid batteries are vulnerable to overcharge and over-discharge, and a controller is provided to control the charge / discharge of the lead-acid battery in order to prevent them and extend the life of the lead-acid battery. In general, the controller stops discharging when the amount of charge falls below a certain lower limit value (for example, 50%), charges until the storage battery is fully charged, and then discharges until the amount of charge reaches the lower limit value. Such control is performed. Furthermore, in the system described in Patent Document 1, discharge is not performed immediately after the charge amount is recovered, and a discharge prohibition cancel command from any of the reset switch, timer, and illuminance detection circuit is input to the controller. The lead-acid battery is efficiently charged by preventing the wasteful discharge by resuming the discharge after waiting. In general, the controller is provided with an overcharge prevention circuit so that after the battery is fully charged, the solar cell or the like is not charged even if power is generated.
JP-A-8-275390

  As described above, in the conventional lighting system using natural energy, when the charge amount of the lead storage battery reaches the lower limit value, the discharge is stopped and the battery is charged until it is fully charged. In a system using only a wind power generator, since it is rarely charged at a stretch like a solar battery, it takes a long time to recover to full charge once the charge amount reaches the lower limit. Therefore, when the charge amount is between the lower limit value and the full charge, the lighting time of the illuminator becomes very short although there is usable energy. In view of such circumstances, the present invention aims to provide a wind power generator-type lighting device that can effectively use generated energy and extend the lighting time of the lighting device by performing control according to the characteristics of wind power generation. To do.

  In order to achieve the above object, a wind power generator-type illuminating device according to claim 1 includes a wind power generator having a brake mechanism for stopping rotation of the windmill, a lead storage battery for storing electricity generated by the wind power generator, and a lead storage battery. A lighting device that is turned on by electricity stored in the solar cell, a solar battery or an EE switch, a controller, a first switch provided between the wind power generator and the controller, and a serial connection between the lighting device and the controller. The solar cell and the EE switch are used to convert illuminance into voltage, and the controller discriminates day and night from the converted voltage, and the first switch is provided with a second switch and a third switch. On the other hand, when the charge amount of the lead storage battery is the upper limit value, it is ON and when it is less than the upper limit value, an OFF instruction is transmitted, and the charge amount of the lead storage battery is the lower limit value for the second switch. When it becomes OFF, it sends an ON instruction when it is above the reference value arbitrarily set between the upper limit value and the lower limit value, and is OFF at daytime and ON at night time to the third switch The brake mechanism is activated when the first switch is ON, and the lighting device is lit when the second switch and the third switch are ON.

  In the wind power generation type lighting device of the present invention, when the charge amount of the lead storage battery reaches the upper limit value, the controller transmits an ON instruction to the first switch, and then the brake mechanism works to stop the rotation of the windmill and stop the power generation. It is possible to reliably prevent overcharge of the lead storage battery. Further, when the charge amount of the lead storage battery reaches the lower limit value, the controller transmits an OFF instruction to the second switch and does not turn on the illuminator, so that overdischarge can be prevented and the action of the solar battery or the EE switch and the third switch Since no lighting is turned on in the daytime, electricity is not wasted. Furthermore, when the charge amount of the lead storage battery reaches a predetermined reference value, the controller transmits an ON instruction to the second switch to enable the lighting device to be lit, so that the lead storage battery is discharged once to the lower limit value. It becomes possible to shorten the time required until the discharge state becomes possible again, and to effectively use the generated energy and extend the lighting time of the luminaire.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a circuit diagram of a wind power generation type lighting device of the present invention, and FIG. 2 is a side view of the wind power generation type lighting device of the present invention. In this wind power generation type lighting device, a wind power generator 3 is installed at the upper end of a pillar 12, and electricity generated by the wind power generator 3 is charged into a lead storage battery 4 installed in the ground, and the electricity is used. The lighting fixture 5 attached to the pillar is turned on at night, and the controller 8 controls the charging and discharging of the lead storage battery 4.

  The wind power generator 3 generates power by transmitting the rotation of the propeller-type windmill 1 having a plurality of blades to the power generator. The wind power generator 3 includes a brake mechanism 2 that stops the rotation of the windmill 1. ing. The specific structure of the brake mechanism 2 does not matter, but for example, a mechanical plate such as a brake plate fixed to a rotating shaft of a windmill or a generator may be stopped by friction, or Japanese Patent Laying-Open No. 2003-21046. It may be electrical as disclosed in the publication. As the wind power generator 3, a wind turbine 1 having a diameter of 950 mm and a rated output of 62 W (when the wind speed is 8 m / s) is used. The illuminator 5 uses 12 W LED illumination.

  As shown in FIG. 1, a first switch 9 is provided between the wind power generator 3 and the controller 8a of the controller, and a second switch 10 is provided between the lighting device 5 and the controller 8a of the controller. A third switch 11 is provided in series. Further, an illuminance-voltage conversion unit 14 including an EE switch 7 and an illuminance-voltage conversion circuit 13 is connected to the controller 8a of the controller. The EE switch 7 detects external illuminance (brightness), the illuminance-voltage conversion circuit 13 converts the illuminance into voltage, and the control unit 8a recognizes whether it is day or night from the converted voltage value. As the illuminance-voltage converter 14, the solar cell 6 can also be used. Reference numeral 18 in FIG. 1 denotes a backflow prevention diode.

  The controller 8a of the controller recognizes the amount of charge from the voltage value of the lead storage battery 4, and based on the amount of charge and the conversion voltage of the illuminance-voltage converter 14, the first switch 9, the second switch 10, and the third switch 11 is instructed to send ON / OFF instructions to control charging and discharging of the lead storage battery 4. When the processing of the control unit 8a for each switch is specifically described, for the first switch 9, when the charge amount of the lead storage battery 4 is the upper limit value (100%), the ON instruction 15a is less than the upper limit value. In this case, an OFF instruction 15b is transmitted, and when the charge amount reaches the lower limit (50%) for the second switch 10, the OFF instruction 16a exceeds the reference value (60%). An ON instruction 16b is transmitted to the third switch 11, and an ON support 17a is transmitted to the third switch 11 at daytime, and an OFF instruction 17b is transmitted at night. And when the 1st switch is ON, the brake mechanism 2 act | operates and rotation of the windmill 1 stops so that the overcharge of the lead storage battery 4 can be prevented. Moreover, when both the 2nd switch 10 and the 3rd switch 11 are ON, ie, the charge amount of the lead acid battery 4 is more than a reference value (60%), and the illumination tool 5 lights up at night. When either one of the switches is OFF, the lighting fixture 5 does not light up. Thereby, the overdischarge of the lead storage battery 4 can be prevented, and the lighting fixture 5 is not turned on unnecessarily during the daytime.

  The design concept of the illumination system will be described with reference to FIG. If the 12 W lighting fixture 5 is turned on every day for 6 hours and the power consumption of the controller 8 is 5 W, the entire system consumes 80 Wh per day. The wind power generator 3 is selected so that it can generate an average power per day that is equal to or higher than the daily power consumption of the entire system in anticipation of loss. The capacity of the lead-acid battery 4 is 1200 Wh, and it can be used by 50% of the capacity, which is 504 Wh multiplied by 0.84, which is a ratio that can be taken out at low temperatures. 6.3 Lighting can be turned on for 3 days. The reference value (60%), which is the amount of charge when the illuminator becomes unlightable after the charge amount falls below the lower limit (50%) and becomes unlightable, is consumed by the entire system per day. It is determined based on the fact that the electric power that is slightly higher than the electric power to be used is charged for the lead storage battery. That is, the power that can be used when the charging amount is 60% is 1200 Wh × 0.1 = 120 Wh, and the value is slightly higher than the daily power consumption 80 Wh of the entire system.

  By doing so, it is possible to reduce the time required for the charging amount to fall below the lower limit value so that the lighting device cannot be turned on and to return to the lighting-enabled state as much as possible. You can turn on the light at night, and if the wind blows normally during the day, it will light up the next night. The strength of the wind varies from day to day, but when a strong wind blows, you can save money for tomorrow, and if the wind doesn't blow, it may not light up for days. In such a case, the reason why the lamp does not turn on is the same even when charging until the amount of charge reaches 100%, and it does not become impossible to turn on when the amount of charge is between 60 and 100%. In the long term, it is considered that wind energy can be extracted most efficiently and stable night lighting can be achieved.

  The present invention is not limited to the embodiments described above. There is no limitation on the circuit configuration, the specific form of each component such as the controller, each switch, and the generator.

It is a circuit diagram which shows one Embodiment of the wind power generation type lighting fixture of this invention. It is a side view which shows one Embodiment of the wind power generation type lighting fixture of this invention. It is a figure which shows the view of the design of the wind power generation type lighting fixture of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Windmill 2 Brake mechanism 3 Wind power generator 4 Lead acid battery 5 Illumination tool 6 Solar cell 7 EE switch 8 Controller 9 1st switch 10 2nd switch 11 3rd switch

Claims (1)

A wind power generator having a brake mechanism for stopping the rotation of the windmill, a lead storage battery that stores electricity generated by the wind power generator, a lighting device that is lit by the electricity stored in the lead storage battery, a solar battery or an EE switch, and a controller , A first switch provided between the wind power generator and the controller, and a second switch and a third switch provided in series between the lighting device and the controller, the solar cell and the EE switch, the illuminance voltage The controller determines the day and night from the converted voltage, and is ON when the charge amount of the lead storage battery is the upper limit value with respect to the first switch and is less than the upper limit value. An OFF instruction is sent to the second switch, and when the charge amount of the lead storage battery reaches the lower limit value for the second switch, the base is arbitrarily set between the upper limit value and the lower limit value. When the value is equal to or greater than the value, an ON instruction is transmitted, and an OFF instruction is transmitted to the third switch at daytime and ON at night. The brake mechanism operates when the first switch is on. The lighting device is turned on when the second switch and the third switch are ON.

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