JP2011199963A - Light-emitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reliable light-emitting device that supplies power to an LED through multiple systems and can be turned if necessary, for example, at emergency.SOLUTION: The light-emitting device includes a first system for turning on an LED in the nighttime by a battery 42 charged from a solar panel 30 during daytime, and a second system for turning on the LED by commercial AC power supply when the LED cannot be turned on by the first system because of insufficient power or the like. As a result, the light-emitting device effectively utilizes solar energy and exhibits a crime preventing function as a street light, thereby enhancing reliability thereof. To turn on the LED at emergency or the like, a remote switch 80 can be operated.

Description

  The present invention relates to a light emitting device or a lighting device, and more specifically, to an improvement of a light emitting device suitable for a street lamp using an LED (light emitting diode).

As a background art of a light emitting device using an LED, for example, there is “LED lighting device” described in Patent Document 1 below. The purpose of this is to ensure sufficient illuminance even when the storage battery is not sufficiently charged by solar power generation, and to effectively use surplus power of solar power generation. In this state, when the generated power of the solar battery is charged into the storage battery and the generated power of the solar battery is larger than the power consumption of this device such as the charging power, the surplus power flows back to the commercial power supply AC side via the grid interconnection device Let the power company sell power. At night when the amount of power generated by the solar battery decreases, lighting power is supplied to the LED unit via the DC / AC converter, the grid interconnection device, and the AC / DC converter using the charge stored in the storage battery. At this time, when the storage battery is insufficiently charged due to bad weather in the daytime or the like, lighting power is supplied from the commercial power supply AC to the LED unit via the grid interconnection device and the AC / DC converter.
JP 2007-82270 A

  However, according to the background art described above, although there are two power supply sources, ie, a commercial power source and a storage battery, only one power is supplied to the LED, which is not necessarily sufficient in terms of reliability. In addition, there are cases where it is desired to turn on the lamp urgently even when the lamp is not normally turned on, such as in an emergency.

  The present invention pays attention to the above points, and can provide power to an LED by a plurality of systems, and can be arbitrarily lit when necessary in an emergency or the like. The purpose is to provide

  In order to achieve the above object, the present invention provides a solar panel for charging a battery, a first light emitting means that lights up when power is supplied from the battery, and power is supplied from a commercial power source. A second system of light-emitting means that is sometimes lit, and a solar power generation means for charging the battery, to supply power from the battery to the light-emitting means of the first system at night The first supply control means, when the battery is below the reference voltage, the power supply by the first supply control means is stopped and the power from the commercial power supply is supplied to the light emitting means of the second system Second supply control means, and charge control means for supplying and charging the battery with electric power generated by the solar panel during the day. .

  One of the main forms is characterized in that remote means for arbitrarily supplying power from the commercial power source to the light emitting means of the second system regardless of day or night is provided. One of the other forms is characterized in that the light emitting means in each of the first and second systems is constituted by a plurality of LED lights. In another embodiment, the plurality of LED lights are arranged side by side in the same casing so that the positions of the first system LED lights and the second system LED lights are symmetrical. It is characterized by that. The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

  According to the present invention, since the first system that lights at night by a battery charged by a solar panel during the day and the second system that lights by a commercial power source are provided, solar energy is effectively utilized. Not only can it be reliable.

  Hereinafter, the best mode for carrying out the present invention will be described in detail based on examples.

  FIG. 1 shows a circuit configuration of the present embodiment. As shown in the figure, in the present embodiment, two LED street lights 10 are provided as an A system LED illumination module 10A and a B system LED illumination module 10B. The A system is a system driven by a solar panel and a battery, and the B system is a system driven by a commercial power source.

  First, from the system A, the input terminals of the system A LED illumination module 10A are connected to the terminal blocks 22 and 24, respectively. On the other hand, the output terminal of the solar panel (solar cell panel) 30 is connected to terminal blocks 32 and 34. The terminal blocks 22 and 24 are connected to one output control side of the charge / discharge controller 40, and the terminal blocks 32 and 34 are connected to the input side of the charge / discharge controller 40. The other output control side of the charge / discharge controller 40 is connected to the battery 42. The terminal blocks 22 and 24 are also connected to a DC relay coil 26C.

  Next, the B system will be described. The input terminal of the B system LED illumination module 10 </ b> B is connected to the DC output side of the AC / DC converter 60 via the terminal blocks 50 and 52. A commercial power supply 70 (for example, AC 200 V, hereinafter referred to as “always AC power supply”) 70 that is constantly applied for commercial use is applied to the terminal blocks 72 and 74. The terminal block 72 is connected to the DC relay contact 26T and the AC relay contact 78C via the breaker 76, respectively. The terminal block 74 is connected to the AC input side of the AC / DC converter 60 together with the AC relay contact 78T via the breaker 76. An AC relay coil 78C for switching the AC relay contact 78T is connected to terminal blocks 82 and 84 by a remote switch 80 for turning on and off the commercial power source remotely.

  The DC relay contact 26T switched by the DC relay coil 26C is connected to the breaker 76 on the one hand and to the terminal block 86 on the other hand. Further, the terminal block 86 is connected to the sunshine sensor 90, and the sunshine sensor 90 is connected to the AC input side of the AC / DC converter 60 via the terminal block 92.

  Among the above components, the A-system charge / discharge controller 40 supplies the power to the battery 42 when the solar panel 30 is generating power, charges it, and when the solar panel 30 is not generating power, the lighting Is necessary, and the battery 42 has a function of performing control to supply power to the LED lighting module 10A for the A system. Moreover, it has the function to judge whether it is nighttime from the electric power generation amount of the solar panel 30. A separate sunshine sensor (not shown) may be provided in the charge / discharge controller 40 to detect whether it is nighttime.

  The B-system AC / DC converter 60 is for converting the AC of the input commercial power supply 70 into a direct current and supplying it to the B-system LED lighting module 10B. The sunshine sensor 90 has a function of switching the contact by detecting day and night from the presence or absence of sunshine. On the other hand, the DC relay coil 26C and the DC relay contact 26T constitute a DC relay 26, and the DC relay contact 26T is switched when a current flows through the DC relay coil 26C. The AC relay coil 78C and the AC relay contact 78T constitute an AC relay 78, and the AC relay contact 78T is switched when a current flows through the AC relay coil 78C.

  The above-described LED illumination module for system A 10A and LED illumination module for system B 10B are formed as a composite of LED modules. FIG. 7 shows an example thereof, and the LED street light 10 is attached to a utility pole or an installation pole 100 as shown in FIG. A solar panel 30 is provided on the outer surface of the housing 102 (not shown), and the circuit shown in FIG. 1 is housed inside. FIG. 2B shows a plan view of the LED street light 10. In the example of FIG. 8, eight LED lights 110 to 126 are provided. Among these, the four LED lights 110 to 116 in the upper half of the figure constitute the LED illumination module 10A for the A system, and the four LED lights 120 to 126 in the lower half of the figure constitute the LED illumination for the B system. A module 10B is configured. In each of the LED lights 110 to 126, as shown in FIG. 4C, a large number of LED elements 201 are arranged in a ring shape on a substrate 200 on which an appropriate wiring pattern is formed, and a hoop is placed on them. The lens 202 is arranged.

Next, the operation of this embodiment will be described with reference to FIGS. In this embodiment, there are five operation modes of MA to ME as shown in the following table, which are shown in FIGS. As shown in Table 1, the operation modes MA to MC are mainly nighttime operation modes from sunset to sunrise, and the operation modes MD and ME are mainly daytime operation modes from sunrise to sunset.

  First, the operation mode MA will be described with reference to FIG. The operation mode MA is at night when the battery 42 is in a normal power supply state, that is, the remote switch 80 is OFF. In this case, the charge / discharge controller 40 determines that it is nighttime from the amount of power generated by the solar panel 30, and as shown by the arrow in FIG. 2, the A is connected from the battery 42 via the charge / discharge controller 40 and the terminal blocks 22, 24. Power is supplied to the system LED illumination module 10A, and the A system LED illumination module 10A is turned on. At this time, since it is nighttime, the sunshine sensor 90 is turned on, but the DC relay coil 26C is also energized, so the DC relay contact 26T is turned off. On the other hand, since the remote switch 80 is OFF, the AC relay contact 78T is OFF. For this reason, power is not always supplied from the AC power supply 70 to the B system LED illumination module 10B. Moreover, since it is nighttime, the battery 42 is not charged from the solar panel 30.

  Next, the operation mode MB is a case where the remote switch 80 is turned on in the operation mode MA. As indicated by arrows in FIG. 3, the operation of the A system is the same as that in the operation mode MA, and power is supplied from the battery 42 to the A system LED lighting module 10A to light up. On the other hand, in the B system, since the remote switch 80 is turned on and the AC relay coil 78C is energized, the AC relay contact 78T is turned on, and the AC power supply 70 to the AC relay 78, the AC / DC converter 60, and the terminal block 50 are always on. , 52, electric power is supplied to the LED lighting module 10B for the B system. Thereby, the LED illumination module 10B for B system is also turned on.

  Next, the operation mode MC is a case where the voltage of the battery 42 is equal to or lower than the reference voltage at the same time at night. For example, when the daytime weather is bad and the solar panel 30 is not sufficiently charged, the power of the battery 42 may be consumed, and the voltage may be lower than the reference value. In this case, no current flows through the DC relay coil 26C, and the DC relay contact 26T is turned on. On the other hand, the sunshine sensor 90 is ON because it is nighttime. For this reason, a current flows as shown by an arrow in FIG. 4, and the LED lighting module 10B for the B system is turned on. In addition, if the battery 42 is below a reference voltage at the time of starting lighting at night, the B system LED lighting module 10B is turned on. First, when the battery 42 is equal to or higher than the reference voltage, the LED lighting module 10A for the A system is turned on. After that, when the battery 42 becomes lower than the reference voltage, the LED lighting module 10B for the B system is turned on at that time. .

  Next, the operation mode MD is in the daytime when the battery 42 is in the normal power supply state, that is, the remote switch 80 is OFF. In this case, as indicated by an arrow in FIG. 5, the output of the solar panel 30 is supplied to the battery 42 by the charge / discharge controller 40 and the battery 42 is charged. At this time, the charge / discharge controller 40 does not supply power to the LED illumination module 10A for the A system, and therefore the LED illumination module 10A for the A system is not lit. Moreover, since the sunshine sensor 90 is OFF during the daytime and the remote switch 80 is also OFF, the B system LED illumination module 10B is not lit.

  Next, the operation mode ME is a case where the remote switch 80 is turned on in the operation mode MD. As indicated by arrows in FIG. 6, the operation of the A system is the same as that in the operation mode MD, and the battery 42 is charged by the output of the solar panel 30. On the other hand, in the B system, since the remote switch 80 is turned on and the AC relay coil 78C is energized, the AC relay contact 78T is turned on, and the AC power supply 70 to the AC relay 78, the AC / DC converter 60, and the terminal block 50 are always on. , 52, electric power is supplied to the LED lighting module 10B for the B system. Thereby, LED lighting module 10B for B systems lights.

As described above, according to this embodiment, there are the following effects.
(1) A first system that turns on LEDs at night by a battery 42 that is charged by the solar panel 30 during the day, and a LED that is turned on by a commercial AC power source when the LEDs cannot be turned on by the first system due to insufficient charging. Since the second system to be performed is provided, it is possible to perform functions such as crime prevention as street lights while effectively utilizing solar energy, and reliability is improved.
(2) Since both the first and second systems are LEDs, there is an advantage that they can be installed in a single street lamp in a complex manner, and are lit as if they were one light source.
(3) In the case of street lamps using conventional solar panels, it is necessary to consider rainy weather, etc., and due to the limit of sunlight exposure several to several tens of times per year, solar panels with more power than originally used are installed. It was necessary to install a large battery for power redundancy. However, according to the present embodiment, since the power supply system is provided, the redundant design of the solar power generation unit is simplified, and the initial cost can be reduced by selecting the minimum necessary solar panels and batteries. Can be achieved.

In addition, this invention is not limited to the Example mentioned above, A various change can be added in the range which does not deviate from the summary of this invention. For example, the following are also included.
(1) The circuit configuration shown in the above embodiment is merely an example, and various design changes can be made so as to achieve the same effect.
(2) In the above embodiment, as shown in FIG. 7, the LED street light 10 is configured by the eight LED lights 110 to 126. However, the number of LED lights may be increased or decreased as necessary. The light is not limited to the hoop type, and may have various structures. Moreover, you may change suitably the arrangement | positioning of the LED light in the illumination module of each system | strain. For example,
a, LED lights 110, 114, 120, and 124 are used as the LED lighting module 10A for the A system, and LED lights 112, 116, 122, and 126 are used as the LED lighting module 10B for the B system. To.
b, the LED lights 110, 116, 120, 126 are used as the A system LED illumination module 10A, and the LED lights 112, 114, 122, 124 are used as the B system LED illumination module 10B. To.
And so on.

  According to the present invention, since power is supplied to the LED light in two systems, the reliability is high and it is suitable for a street light or the like.

It is a circuit diagram which shows the structure of the Example of this invention. It is a figure which shows a mode that the electric current flows in operation mode MA. It is a figure which shows a mode that the electric current flows in operation mode MB. It is a figure which shows a mode that the electric current flows in operation mode MC. It is a figure which shows a mode that the electric current flows in operation mode MD. It is a figure which shows a mode that the electric current flows in operation mode ME. It is a figure which shows an example of the LED street light in the said Example.

10: LED street light 10A: LED lighting module for system A 10B: LED lighting module for system B 22, 24: Terminal block 26: DC relay 26C: DC relay coil 26T: DC relay contact 30: Solar panel 32, 34: Terminal Table 40: Charge / discharge controller 42: Battery 50, 52: Terminal block 60: AC / DC converter 70: Commercial power supply (always AC power supply)
72, 74: Terminal block 76: Breaker 78: AC relay 78C: AC relay coil 78T: AC relay contact 80: Remote switch 82, 84, 86: Terminal block 90: Sunlight sensor 92: Terminal block 100: Installation pole 102: Cases 110-126: LED light 200: Substrate 201: LED element 202: Lens

Claims (4)

Solar panel to charge the battery,
A first light-emitting means that lights up when power is supplied from the battery;
A second light-emitting means that lights up when power is supplied from a commercial power source;
Solar power generation means for charging the battery;
With
First supply control means for supplying power from the battery to the light emitting means of the first system at night;
A second supply control means for stopping power supply by the first supply control means and supplying power from the commercial power source to the light emitting means of the second system when the battery is below a reference voltage;
Charging control means for supplying and charging the battery with the electric power generated by the solar panel during the day;
A light-emitting device comprising:   2. The light emitting device according to claim 1, further comprising remote means for arbitrarily supplying power from the commercial power source to the light emitting means of the second system regardless of day or night.   The light emitting device according to claim 1 or 2, wherein the light emitting means in each of the first and second systems is composed of a plurality of LED lights.   4. The plurality of LED lights are arranged side by side in the same casing so that the positions of the first system LED lights and the second system LED lights are symmetrical. Light-emitting device.

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