JP4015645B2 - Automatic lighting / extinguishing type street light device using solar battery - Google Patents

Description

  The present invention relates to an automatic lighting / extinguishing type street light device using a solar battery used for night illumination of a corresponding outdoor peripheral portion by arranging and arranging a plurality of lighting street lights at every required interval along the street. Uses a solar cell as a light source lighting power source for each of these lighting street lamps, and uses each of the lighting street lights to automatically control lighting according to the brightness of the outdoor periphery. This relates to the improvement of the street lighting device with automatic lighting / extinguishing type.

  Conventionally, a general street lamp device of this type uses an incandescent bulb, a fluorescent lamp, a mercury lamp, or a plurality of light emitting diode elements as an illumination light source, and each of the illumination light sources corresponds to an alternating current. An automatic flasher that detects the degree of light and darkness in the perimeter of the outdoor area is used to emit light by supplying power from a 100 volt commercial power source or a DC power source that combines solar cells and secondary batteries. I am trying to use it.

  However, each of these conventional street lamp devices has the following undesirable problems, and hence problems, and it has been necessary to improve each of these problems.

  That is, when the former incandescent bulb, fluorescent lamp, and mercury lamp are used as the light source of the street lamp for illumination, first, as a first problem, 100 VAC is used for each lighting power source. Therefore, when laying the entire street lamp device, a transmission line route from the power supply unit to each street lamp set up individually is indispensable. For each installation of the transmission line, etc. In addition to the high installation price, maintenance costs are also required.

  Further, as a second problem, the incandescent bulb, the fluorescent lamp, and the mercury lamp are not only accompanied by the disadvantage that the overall power consumption is relatively high, but the third problem. As a result, it is inevitable that the maintenance and operation costs will increase because it is necessary to always deal with the replacement of the bulbs of the illumination light sources.

  On the other hand, when each of the latter light-emitting diode elements is used as the light source of the street light for illumination and a combination of a solar battery and a secondary battery is used as the power source, the fourth problem following the problems of the former. As a point, since the power conversion technique is constant current control at present, the secondary battery that stores the direct current generated by the solar battery and each light emitting diode element that is an illumination light source The power conversion efficiency during the period is extremely poor, and the incidental solar cell must have a large capacity that reaches 10 times the required light source power in consideration of the sunshine conditions. Expenses soar to the people and win.

  In addition, as a fifth problem, an automatic flashing device that detects the degree of light and darkness of the corresponding outdoor peripheral portion is mounted for each of the lighting street lamps, and lighting control of the lighting lamps is performed by this automatic flashing device. However, regardless of whether the flashing method is electronic or mechanical, there is a limit on the contact life, etc., so that it requires a corresponding management expense for repair or replacement when it breaks or breaks Yes.

  Furthermore, as a sixth problem, in the light emitting diode element that is an illumination light source, there is a directivity that is not preferable in order to effectively obtain an illumination action in terms of its light emission characteristics. Thus, the number of the light emitting diode elements used is increased for each surface in order to achieve good light diffusion illumination, and this also increases the initial installation cost.

  In addition to these, in the conventional street lamp device, the light diffusibility of the illumination light source itself is poor and the light irradiation range for each street lamp is limited. There is also a disadvantage that the number of street lamps installed per required lighting section in the target street is inevitably increased.

  Therefore, the object of the present invention is to solve this problem in the light of the above-described conventional situation, and to illuminate the target street surface in a good and effective manner. It is to provide an automatic lighting / extinguishing type street light device using solar cells.

The automatic lighting / extinguishing type street light device using the solar battery according to claim 1 of the present invention,
A power supply unit for lighting composed of a solar battery, a secondary battery that charges a direct current generated by the solar battery, and a charge control circuit thereof, and brightness detection that automatically detects and outputs the brightness of the outdoor lighting target A light emitting diode panel portion for illumination in which a light emitting surface corresponding to a required light emitting area is formed by mounting a plurality of light emitting diode elements in a planar shape; a secondary battery of the power supply portion; and the light emitting diode panel portion A constant current switching power supply circuit unit connected in between, and a control circuit unit for controlling the operation of each of the charge control circuit and the constant current switching power supply circuit unit corresponding to the detection output of the brightness detection circuit unit,
The control circuit unit for controlling the operation of the charge control circuit and the constant current switching power supply circuit unit is configured to perform the charging when the outdoor brightness detected by the brightness detection circuit unit is equal to or higher than a predetermined brightness. The control circuit is operated to check the brightness so that the direct current from the solar battery can be charged to the secondary battery, and when the brightness outside the illumination target is in a state of a predetermined darkness or less, The current switching power supply circuit unit is operated to check the darkness, and the secondary battery can emit light by supplying the lighting current to the light emitting diode panel unit,
The light emitting diode panel unit has a plurality of light emitting diode elements arranged in a planar shape as a plurality of light emitting diode elements and a plurality of ultraviolet light emitting diode elements arranged in a dot shape in order to diffuse and radiate illumination light over a wide range. Then, the light-emitting diode elements are connected in series to form one unit of light-emitting block, and a plurality of units of the light-emitting blocks are connected in parallel, and the phosphor element array is opposed to the light-emitting block array of the plurality of units. The power supply unit, the brightness detection circuit unit, the light emitting diode panel unit, the constant current switching power supply circuit unit, and the control circuit unit are covered with a light-transmitting skin .

The invention according to claim 2 of the present invention is an automatic lighting / extinguishing type street light device using the solar battery according to claim 1,
The power supply unit for illumination has a charge control circuit in which a capacitor for temporarily charging a direct current generated by the solar battery is disposed, and the intensity of the outdoor lighting target detected by the intensity detection circuit unit is predetermined. The secondary battery is configured to be charged by controlling the capacitor of the charge control circuit when the brightness is equal to or higher than the brightness of the secondary battery.

The invention according to claim 3 of the present invention is the automatic lighting / extinguishing type street light device using the solar battery according to claim 1 or 2,
The lightness detection circuit unit automatically detects the lightness and darkness outside the illumination target individually and outputs each lightness detection signal to each light detection element, and each light detection element. Comparing and judging each brightness detection signal output to each from the element, if the number of detection signals indicating a state of a predetermined brightness or higher among these brightness detection signals is larger, When the corresponding required brightness confirmation signal is output as the brightness detection signal of the circuit unit itself and the number of detection signals indicating a state equal to or lower than the predetermined darkness is larger, the corresponding required brightness confirmation signal is displayed. It is characterized by comprising a brightness majority decision circuit that outputs as a brightness detection signal of the circuit unit itself.

The invention according to claim 4 of the present invention is the automatic lighting / extinguishing type street light device using solar battery according to any one of claims 1 to 3,
The constant current switching power supply circuit unit includes a constant current conversion control circuit for converting an illumination current from the secondary battery to each light emitting diode element.

According to the street lamp device according to claim 1 of the present invention, a plurality of light emitting diode elements are used as an illumination light source, and a combination of a solar battery, a charging circuit and a secondary battery is used as a light emitting power source. A brightness detection circuit that automatically detects the brightness of the target outdoor area is provided so that charging control of the secondary battery and lighting control of each light-emitting diode element can be performed. Can be done. In this case, each light-emitting diode element that is a light source may consume less power, and can be used for a long period of time without breaking the bulb, unlike incandescent bulbs. Since only the inside of the apparatus is required, there is an advantage that no external installation or the like is required. In addition, a plurality of light emitting diode elements and a plurality of ultraviolet light emitting diode elements are connected in series to form one unit of light emitting block, and a plurality of units of the light emitting blocks are connected in parallel, and the plurality of units of light emitting block array are connected. Since the light emitting diode panel is configured with the phosphor element rows facing each other, visible light can be diffused in a relatively wide range between the ultraviolet light emitting diode element and the phosphor element, and this is also a disadvantage of the light emitting diode element. It is possible to improve the directivity to enable visual recognition from a distance, and to optimize the number of light emitting diode elements used.

  According to the street lamp device according to claim 2 of the present invention, a charging circuit in which a capacitor for once charging a direct current generated by the solar battery is provided, and the outdoor lighting target detected by the brightness detection circuit unit is provided. Since the secondary battery is charged by controlling the capacitor of the charge control circuit when the lightness is equal to or higher than the predetermined lightness, a power generation operation utilizing the sunshine time can be obtained.

  According to the street lamp device of the third aspect of the present invention, at least three or more independent light detection elements that individually automatically detect the brightness of the illumination target outdoor and output each brightness detection signal; In addition, since it has a brightness majority decision determination circuit that compares and determines each brightness detection signal from each light detection element, it can always accurately detect the brightness outside the illumination target. Even if any one of the detection elements continues to output an accidental darkness confirmation signal because it is shaded by trees or covered with fallen leaves or bird droppings, the output signal from the other remaining detection elements There is no risk of hindering actual operation, and as a result, it is superior to electronic and mechanical contacts and has a longer service life.

  According to the street lamp device of the fourth aspect of the present invention, the illumination current supplied from the secondary battery to each light emitting diode element is converted by the constant current switching power supply circuit unit, whereby the constant current conversion control is performed. Therefore, when compared with the constant current circuit portion of a conventional light emitting diode element, the energy conversion efficiency is about 1.6 times higher. For example, it can be lit without time limit at night, It is possible to reduce the light receiving area of the photovoltaic cell, and thus the power generation area, to about 60% of the conventional size.

 Hereinafter, embodiments of an automatic lighting / extinguishing type street light device using solar cells according to the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a vertical sectional conceptual diagram schematically showing the overall configuration of an automatic lighting / extinguishing type street light device using a solar cell (hereinafter also simply referred to as “street light device”) to which this embodiment is applied. These are circuit block diagrams which show the outline | summary of the lighting / extinction circuit part structure in the street lamp apparatus of an Example same as the above.

  As shown in FIG. 1, the street lamp apparatus according to the present embodiment is an illumination street lamp main body (hereinafter referred to as “street light main body”) A provided along a side edge of the illumination target street 100 and the like at a required interval. This street lamp main body A has a hollow cylindrical support cylinder 11 that is erected by embedding a lower end portion in a road shoulder portion or the like of a street surface 101 that is an illumination target part, and the support cylinder 11. The light source unit holding arm 12 has a hollow flat cylindrical shape that can be bent at a required angle to project above the street surface 101.

  Here, the support cylinder 11 may be a steel pipe pole or the like having a required length appropriately subjected to a stiffening treatment (not shown), etc., as in a normal case. Measures that cannot be properly performed such as swiveling or swinging after being embedded in the position are taken, and a coupling ring portion 13 that is bent at a required angle protrudes and is formed on the upper end side, and the bent portion The secondary battery 23 of the illumination power supply unit 20 having a relatively heavy weight, which will be described later, is housed and held in a space close to.

  In addition, referring to FIG. 2, the light source unit holding arm 12 is formed with a projecting ring 14 that is fitted and integrated with the coupling ring unit 13 on the base end side, and on the tip end side. Similarly, as will be described subsequently, an internal space for enclosing the lighting / extinguishing circuit unit B, in this case the lighting control circuit unit 40, etc. is provided, and the illumination power source unit 20 is disposed on the front upper surface side thereof. Therefore, the upper surface opening 15 over a relatively wide range is opened, and the lower surface opening 16 for arranging the illumination light source unit 50 on the front lower surface side is opened.

  On the other hand, as shown in FIGS. 1 and 2, the lighting / extinguishing circuit portion B in the street light device is disposed on the upper surface side of the distal end portion of the light source portion holding arm 12 in the street light main body A, An illumination power supply unit 20 that receives light from the upper surface opening 15 to be externally exposed and is fixed so as to obtain an effective power generation operation, and a lighting control circuit unit that is enclosed and held in the light source unit holding arm 12 30 and a lightness / darkness detection circuit unit 40 that constantly and accurately detects the lightness / darkness outside the illumination target, and is fixed to the lower surface opening 16 part on the lower surface side of the distal end of the light source unit holding arm 12 to face the street surface 101 Thus, the illumination light source unit 50 is configured to obtain a required illumination action.

  Thus, the illumination power supply unit 20 disposed and fixed in the upper surface opening 15 portion of the light source unit holding arm 12 is charged with the solar cell 21 formed by connecting single-crystal silicon type or thin film silicon type power generation elements. The control circuit 22 and the secondary battery 23 are connected in series, and a constant current switching power supply circuit 24 is interposed between the secondary battery 23 and the light emitting diode panel 50 described below. And in the right place on the light receiving panel surface 21a side where the solar battery 21 is exposed, the light detection elements 41a, 41b, 41c of the brightness detection circuit unit 40 are arranged in an appropriate dispersion state, The charging control circuit 22 incorporates a capacitor 22a that temporarily charges a direct current generated by the solar battery 21.

  Further, the lighting control circuit unit 30 included and held in the light source unit holding arm 12 controls the charging / discharging action in the illumination power source unit 20, and in the case of the present embodiment, the brightness detection circuit unit 40. As the signal output from, when it is daytime sunshine suitable for solar power generation, which indicates sufficient brightness (brightness) outside the illumination target, the charge control circuit 22 is operated to start from the solar battery 21. After the capacitor 22a is once charged with the direct current, the charging operation to the secondary battery 23 is continued and operated, while the outdoor lighting target is dark (darkness) that requires lighting. In some cases, the charging operation is stopped and the constant current switching power supply circuit 24 is operated to convert the charge charged in the secondary battery 23 into electric power with high efficiency to the illumination light source unit 50. It is conductive, that is, than to light irradiation by supplying lighting current.

  Here, the charging control circuit 22 stops charging the secondary battery 23 when the lightness signal from the lighting control circuit unit 30 disappears, and then from the lightness / darkness detection circuit unit 40. When the lightness confirmation signal 42-H to be described is changed to the darkness confirmation signal 42-L, or even when the lightness confirmation signal 42-H is transmitted, a preset allowable maximum charge amount or allowable maximum charge temperature is reached. Is the case.

  Further, the brightness detection circuit unit 40 included and held in the light source unit holding arm 12 is for automatically detecting the brightness of the illumination target outdoor and outputting a signal, and as described above, At least three or more individual photodetecting element groups dispersed and arranged on the light receiving panel surface 21a of the solar battery 21, in the case of the present embodiment, three (of course, four or more are prevented. Light detection elements 41a, 41b, 41c, and a lightness majority determination circuit 42 that comprehensively compares and determines the lightness detection signals output from the light detection elements 41a to 41c. ing.

  In this case, the brightness majority decision circuit 42 has a brightness detection signal number indicating a state of a predetermined brightness or higher among the brightness detection signals detected by the light detection elements 41a, 41b, 41c. When the number of darkness detection signals is larger than the number of darkness detection signals, a necessary lightness confirmation signal 42-H corresponding to the lightness detection signal 42-H corresponding to the darkness detection signal is determined and output to the lighting control circuit portion 30. On the contrary, when the number of darkness detection signals indicating a state equal to or lower than the predetermined darkness is larger than the number of lightness detection signals, the required darkness corresponding to this is used as the brightness detection signal of the circuit unit 42 itself. The confirmation signal 42 -L is judged and output to the lighting control circuit unit 30.

  Further, as the illumination light source unit 50 arranged and fixed to the lower surface opening 16 portion of the light source unit holding arm 12, a plurality of high-intensity light-emitting diode elements 51a are arranged in a plane shape, and a plurality of the light source units 50a are arranged accordingly. The ultraviolet light-emitting diode elements 51b are arranged in the form of dots, and these are connected in series to form one unit of light-emitting block 51, and a plurality of units of the light-emitting blocks 51 are connected in parallel, and the plurality of units of light-emitting block array The phosphor element array 52 is arranged so as to face the substrate, and further, these are covered with a light-transmitting jacket 53.

  That is, here, the phosphor element array 52 is also caused to emit light by the dot-shaped ultraviolet light emitting diode elements 51b together with the light emission of the light emitting diode elements 51a. In this light emitting system, the disadvantages of the light emitting diode elements 51a. However, the light directivity has been remarkably improved, and illuminance for illumination with sufficient brightness can be obtained. The amount of light-emitting diode elements 51a used is optimized, and as a result, the total amount can be reduced. Since it can be mounted in the same volume and has sufficient illuminance as described above, as a result, it is possible to easily reduce the number of street lamps per unit length.

  In addition, this invention is not limited only to the form of the said Example, A various change aspect can be taken within the range of the invention thought.

BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal cross-sectional conceptual diagram which shows schematically the whole structure of the automatic lighting and light extinction type street lamp apparatus using a solar cell to which the Example of this invention is applied. It is a circuit block diagram which shows the outline | summary of the lighting / extinction circuit part structure in the street lamp apparatus of an Example same as the above.

Explanation of symbols

A lighting street light main body B lighting / extinguishing circuit unit 11 support cylinder 12 light source unit holding arm 13 coupling ring unit 14 projecting ring 15 upper surface opening 16 lower surface opening 20 lighting power source unit 21 solar cell 21a light receiving panel surface 22 charge control circuit 22a capacitor 23 secondary battery 24 constant current switching circuit 30 lighting control circuit part 40 brightness detection circuit part 41a-c light detection element 42-H brightness check signal 42-L darkness check signal 50 illumination light source part 51 light emitting block 51a high Luminance type light emitting diode element 51b Ultraviolet light emitting diode element 52 Phosphor element array 53 Light transmissive outer cover 100 Illumination target street 101 Street surface

Claims (4)

A power supply unit for lighting composed of a solar battery, a secondary battery that charges a direct current generated by the solar battery, and a charge control circuit thereof, and brightness detection that automatically detects and outputs the brightness of the outdoor lighting target A light emitting diode panel portion for illumination in which a light emitting surface corresponding to a required light emitting area is formed by mounting a plurality of light emitting diode elements in a planar shape; a secondary battery of the power supply portion; and the light emitting diode panel portion A constant current switching power supply circuit unit connected in between, and a control circuit unit for controlling the operation of the charge control circuit and the constant current switching power supply circuit in response to the detection output of the brightness detection circuit unit,
The control circuit unit for controlling the operation of the charge control circuit and the constant current switching power supply circuit unit is configured to perform the charging when the outdoor brightness detected by the brightness detection circuit unit is equal to or higher than a predetermined brightness. The control circuit is operated to check the brightness so that the direct current from the solar battery can be charged to the secondary battery, and when the brightness outside the illumination target is in a state of a predetermined darkness or less, The current switching power supply circuit unit is operated to check the darkness, and the secondary battery can emit light by supplying the lighting current to the light emitting diode panel unit,
The light emitting diode panel unit has a plurality of light emitting diode elements arranged in a planar shape as a plurality of light emitting diode elements and a plurality of ultraviolet light emitting diode elements arranged in a dot shape in order to diffuse and radiate illumination light over a wide range. Then, the light-emitting diode elements are connected in series to form one unit of light-emitting block, and a plurality of units of the light-emitting blocks are connected in parallel, and the phosphor element array is opposed to the light-emitting block array of the plurality of units. The power supply unit, the brightness detection circuit unit, the light emitting diode panel unit, the constant current switching power supply circuit unit, and the control circuit unit are configured to be covered with a light transmissive outer skin. Automatic lighting / extinguishing type street light device using solar cells.   The power supply unit for illumination has a charge control circuit in which a capacitor for temporarily charging a direct current generated by the solar battery is provided, and the intensity of the outdoors to be detected detected by the intensity detection circuit unit is predetermined. 2. The automatic lighting of solar cell using according to claim 1, wherein the secondary battery is charged by controlling a capacitor of the charge control circuit when the brightness is equal to or higher than the brightness of the solar battery.・ Light-off type street light device.   The lightness and darkness detection circuit unit automatically and individually detects the lightness and darkness of the outdoor lighting target, and outputs each lightness and brightness detection signal to each light detection element, and each light detection element. Comparing and judging each brightness detection signal output to each from the element, among the plurality of brightness detection signals, when the number of detection signals indicating a state of a predetermined brightness or more is larger, The required brightness confirmation signal corresponding to this is output as the brightness detection signal of the circuit unit itself, and if there are more detection signals indicating a state of a predetermined darkness or less, the required brightness confirmation corresponding to this is confirmed. 3. The automatic lighting / extinguishing type street lamp device using solar cells according to claim 1 or 2, comprising a brightness majority decision circuit for outputting a signal as a brightness detection signal of the circuit unit itself.   4. The constant current switching power supply circuit unit includes a constant current conversion control circuit for converting an illumination current from the secondary battery to each light emitting diode element. Automatic lighting / extinguishing type street light device using solar battery as described.

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