JP2004087349A - Street light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact street light in which power can be saved and which has an excellent color tone and can be applied to a sidewalk. <P>SOLUTION: A sodium lamp 13 and a light-emitting diode lamp 8 are in a lighting state from sunset to midnight. Only the light-emitting diode lamp 8 is in a lighting state from midnight to sunrise. The sodium lamp 13 and the light-emitting diode lamp 8 are in un-lighted states, that is, in totally un-lighted states from sunrise to sunset. In this way, if the sodium lamp 13 and the light-emitting diode lamp 8 are lighted together from sunset to midnight, color rendering properties are enhanced. Also, if only the light-emitting diode lamp 8 is lighted from midnight to sunrise, power can be saved, and it is also useful for crime prevention. Also, since a plurality of batteries 20 are arrayed and stored in an inner hollow part of a lighting pole 2, for example, even if the street light 1 is installed on the sidewalk, a space for the sidewalk can be sufficiently secured. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a street light using a sodium lamp as a light source.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, street lights are provided in a city area or the like so that traffic can be safely performed at night. This street light generally has a configuration in which the lower end of a light pole (pole) is embedded in the ground and a light source is attached to the upper end of the light pole. Here, a street light using a sodium lamp as a light source is already well known. Also well-known is a configuration in which a power generator is arranged on a light pole, electric power is stored in a storage battery (battery) stored in a distribution panel installed beside the street light, and the electric power is used to emit a light source. ing.
[0003]
[Problems to be solved by the invention]
However, the sodium lamp has a problem that it consumes a large amount of power and is economically disadvantageous if it is turned on for a long time, and has a bad color because it is yellow light. Further, in the configuration including the power generation device, the distribution board in which the storage battery is stored becomes very large. Therefore, even if the street light is applied to a sidewalk, the distribution board narrows the sidewalk. Could not be applied. For this reason, the installation place was eventually limited to some places such as parks.
Therefore, an object of the present invention is to provide a compact street light that can save power, has good color appearance, and can be applied to a sidewalk.
[0004]
[Means for Solving the Problems]
The present invention relates to a street lamp provided with lighting control means for providing a lamp including a sodium lamp and a light emitting diode lamp on a light pole, turning on or off the sodium lamp, and turning on or off the light emitting diode lamp. The control means includes a first lighting state in which the sodium lamp and the light emitting diode lamp are turned on, a second lighting state in which only the light emitting diode lamp is turned on, and an all-off state in which the sodium light and the light emitting diode lamp are turned off. Is a street light provided with control contents for selectively generating (1).
[0005]
With this configuration, it is possible to select an optimal lighting state according to the environment. Here, there is proposed a configuration in which the lighting control means has control contents to be continuously generated in the order of the first lighting state, the second lighting state, and the all-off state (claim 2). In such a configuration, as an example, a configuration in which the first lighting state is generated from sunset to midnight, the second lighting state is generated from midnight to sunrise, and the all-light-off state is generated from sunrise to sunset. That is, the first lighting state is generated in a time zone in which the illuminance of the lamp is most required, so that the illuminance can be sufficiently ensured. Further, by causing both the sodium lamp and the light-emitting diode lamp to emit light, the color rendering is close to that of natural light, so that the tint is improved. In addition, by adopting a configuration in which the second lighting state is generated in a time zone where the illuminance is not so required, it is not necessary to light a sodium lamp having large power consumption, so that power consumption can be reduced and light emission can be reduced. By turning on the diode lamp, a configuration useful for crime prevention can be obtained. Furthermore, by turning off all lights in the daytime when light emission of the lamp is unnecessary, it is more economically advantageous. Since the time of sunrise and sunset varies depending on the region and the season, it is preferable that the start time and the stop time of each lighting state or the light-off state can be freely set.
[0006]
Further, a power generating device is disposed on a light pole or a lamp, and in a street lamp that emits light with the power generated by the power generating device, a storage battery unit configured to store the power generated by the power generating device includes a plurality of storage batteries. A configuration is proposed in which the plurality of storage batteries are arranged and stored in the interior space of the lamp pole along the vertical direction (claim 3).
[0007]
With this configuration, it is not necessary to install the distribution board separately from the street light, and it is possible to enlarge the space near the street light. Therefore, for example, even when the street light according to the present invention is installed on the sidewalk, the sidewalk can be sufficiently secured.
[0008]
Further, a plurality of storage compartments for storage batteries are formed in the interior space of the lamppost by using support rods that are bridged in the transverse direction of the interior space, and each storage battery is supported and supported by the support rods. The proposed configuration is proposed (claim 4). With such a configuration, a conventionally known lamp pole can be used as it is, so that an increase in manufacturing cost can be prevented.
[0009]
In addition, the storage battery unit of the power generation device is connected to the discharge / storage control unit that controls the conversion of the storage battery unit to the discharge state or the storage state via the power supply cord, and a plurality of storage batteries are electrically connected in parallel. In the configuration, the energizing cord has a main cord having one end connected to the discharge / charge control unit, and a plurality of slave cords having one end connected to the other end of the main cord and the other end connected to each storage battery. And the length of each slave cord is made equal (claim 5).
[0010]
In this way, by configuring the power supply cord connecting the discharge / power storage control unit and each storage battery to a configuration in which a plurality of sub cords are branched from the main code, the wiring of the storage batteries arranged in the vertical direction is complicated. And can be electrically connected in parallel. In addition, since the internal resistances of the slave cords are equalized by making the entire lengths of the slave cords equal, the electromotive force of the storage battery does not differ.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the street light according to the present invention will be described below.
As shown in FIGS. 1 and 2, the street light 1 includes a light pole 2 (pole) whose lower end is buried in the ground and a lamp 3 disposed at a substantially middle height position of the light pole 2. Have. Further above, a solar cell panel 11 is provided, and a windmill generator 5 is provided at the upper end of the lamp pole 2. The solar cell panel 11 and the wind turbine generator 5 constitute a power generation device according to the present invention.
[0012]
As shown in FIGS. 3 and 4, the lamp 3 includes a lamp 7 and a bracket 6 that supports the lamp 7 in a projecting manner to the side of the lamp post 2. A cover body 11 formed by acrylic molding is attached to the lamp body 7 from below. A reflector 9 provided with a light-emitting diode lamp 8 is provided inside the cover body 11 by screwing with reflector-mounting screws 9a, 9a. Is provided with a sodium lamp 13. More specifically, as shown in FIG. 5, a large number of light-emitting diodes are vertically and horizontally formed on both sides of a reflector 9 having a lower surface as a reflection surface. The light-emitting diode lamp 8 is implanted, and the whole of the light-emitting diode lamp 8 is directed downward. A tubular sodium lamp 13 is provided at the center of the reflector 9 so that its connection end is screwed into a socket fixed in the lamp body 7 so as to cross the lower surface of the reflector 9. You. That is, the reflection plate 9 carries the light emitting diode, and functions to reflect the irradiation light upward of the sodium lamp 13 and strengthen the irradiation light downward.
[0013]
Next, the light pole 2 will be described in detail.
As shown in FIGS. 1 and 6, shielding doors 15 a, 15 b, and 15 c which can shield the opening 14 communicating with the inner space of the lamp pole 2 are vertically continuous on the peripheral surface of the lamp pole 2. There are three pivots. Among them, the uppermost shielding door 15a and the lowermost shielding door 15c are provided with ventilation holes 16, 16, respectively. A coin lock 17 is attached to each of the shielding doors 15a, 15b, 15c for security.
[0014]
Further, in the inner space of the lamp post 2, a plurality of storage compartments 18 for a storage battery are formed by bridging a support rod 19 in the transverse direction of the lamp post 2. The support rod 19 is disposed on the near side and the back side when viewed from the opening 14 side. The support rod 19 is fixed by welding and joining its end to the inner peripheral wall of the light pole 2.
[0015]
Then, in the plurality of storage compartments 18 for storage batteries, a plurality of storage batteries 20 for storing the power generated by the solar cell panel 11 and the wind turbine generator 5 are supported by the support rods 19 and stored. The storage battery 20 constitutes the storage battery unit 12 according to the present invention. As shown in FIG. 6, the storage doors 15 a, 15 b, and 15 c are easily opened through the opening 14 by opening the shielding doors 15 a, 15 b, and 15 c. Can be put in and out. As described above, by arranging the storage batteries 20 in the interior space of the light pole 2 along the vertical direction, it is not necessary to install the distribution board separately from the street light 1, and the space near the street light 1 is reduced. Can be expanded.
[0016]
In addition, since the storage battery 20 emits high heat at the time of driving, the inside of the light pole 2 becomes hot. Therefore, as described above, the ventilation doors 16 and 16 are provided in the shielding doors 15a and 15c, and the storage battery storage chambers 18 communicate with each other. As a result, outside air is introduced from the lower ventilation port 16 and high-temperature interior air is exhausted from the upper ventilation port 16, so that the interior space of the lamp post 2 is ventilated, and the internal high temperature is prevented. Is done.
[0017]
By the way, in the present embodiment, the power controller 30 that controls the conversion of the storage battery 20 into the discharge state or the storage state is stored in the storage battery storage room 18 at the uppermost position among the plurality of storage battery storage rooms 18. You. The power controller 30 constitutes a discharge / charge control unit according to the present invention.
[0018]
The power controller 30 and each of the storage batteries 20 described above are connected in parallel using a power supply cord 21 as shown in FIG. Here, the energizing cord 21 includes a main cord 22 and a plurality of sub cords 23. That is, one end of each sub cord 23 is connected to the other end of the main cord 22 whose one end is connected to the power controller 30, and the storage battery 20 is connected to the other end of each sub cord 23. Further, the slave cords 23 have the same overall length. With this configuration, the electric resistance between the power controller 30 and each storage battery 20 can be equalized. For this reason, in the parallel connection, it is required to stabilize the output voltage of each storage battery 20, but such a wiring form can realize the stabilization as much as possible.
[0019]
Next, lighting control of the street light 1 according to the present invention will be described.
As shown in FIG. 8, the power controller 30 includes a central control unit CPU and a storage device ROM in which data of a first point state pattern, a second lighting state pattern, and an all-off state pattern is stored and held. A main control board 25 is provided. The main control board 25 constitutes a lighting control unit according to the present invention.
[0020]
The solar control panel 11, the wind power generator 5, and the storage battery unit 12 are connected to the main control board 25. Then, the electric power generated by the solar cell panel 11 and the wind power generator 5 is stored in the storage battery unit 12. On the other hand, the main control board 25 turns on the sodium lamp 13 or the light emitting diode lamp 8 using the electric power stored in the storage battery unit 12.
[0021]
Further, a first timer switch S1, a second timer switch S2, and a third timer switch S3 are connected to the main control board 25. These timer switches S1 to S3 are set to be turned on at a predetermined time. Here, the first timer switch S1 is set to emit an ON signal at the time of sunset, the second timer switch S2 emits an ON signal at midnight, and the third timer switch S3 emits an ON signal at the time of sunrise. Is set to be Then, when the central control unit CPU detects the ON signal of the first timer switch S1, a first lighting state in which both the sodium lamp 13 and the light emitting diode lamp 8 are turned on is generated. Further, when an ON signal of the second timer switch S2 is detected, a second lighting state in which only the light emitting diode lamp 8 is turned on is generated. Further, when the ON signal of the third timer switch S3 is detected, a state is generated in which the sodium lamp 13 and the light emitting diode lamp 8 are both turned off. That is, it occurs continuously in the order of the first lighting state, the second lighting state, and the all-off state.
[0022]
Hereinafter, lighting control of the sodium lamp 13 and the light emitting diode lamp 8 will be described.
When the central controller CPU detects the ON state of the first timer switch S1, both the sodium lamp 13 and the light emitting diode lamp 8 are turned on using the first point state pattern stored in the storage device ROM. Since the time zone from sunset to midnight is the time zone where the illuminance is most required, the illuminance can be sufficiently ensured by turning on both the sodium lamp 13 and the light emitting diode lamp 8. Further, since the sodium lamp 13 is yellow light, lighting alone has a problem in color. However, by lighting together with the light-emitting diode lamp 8, it is possible to obtain light close to natural light and having excellent color rendering properties. Become.
[0023]
When the central control unit CPU detects the ON state of the second timer switch S2, only the light emitting diode lamp 8 is turned on using the second point state pattern stored in the storage ROM. The time zone from midnight to sunrise is not a time zone in which there is little traffic and that much higher illuminance is required compared to the time zone in which the first lighting state is generated. Therefore, by setting the lighting state in which only the light-emitting diode lamp 8 is turned on, it is possible to suppress power consumption and to secure illuminance with which at least a security effect is obtained.
[0024]
Further, when the central control unit CPU detects the ON state of the third timer switch S3, the central control unit CPU turns the lamp 3 completely off using the all-off state pattern stored and held in the storage device ROM. Since there is no need to turn on the light from sunrise to sunset, both the sodium lamp 13 and the light emitting diode lamp 8 are turned off.
[0025]
Although the above configuration is a configuration in which time control is performed using the timer switches S1 to S3, a configuration in which light control is performed using an optical sensor is of course also possible.
[0026]
Note that the start time and stop time of the lighting state or the all-off state and the setting mode can be appropriately changed for each season. The embodiments can be appropriately modified without departing from the gist of the present invention.
[0027]
【The invention's effect】
The present invention provides a first lighting state in which the sodium lamp and the light-emitting diode lamp are turned on, a second lighting state in which only the light-emitting diode lamp is turned on, and an all-off state in which the sodium lamp and the light-emitting diode lamp are turned off. Is selectively generated (claim 1), so that there is an excellent effect that an optimal lighting state can be selected according to the environment. That is, in the time zone in which the illuminance of the lamp is most required, the first lighting state in which the illuminance is high is generated, and in the time zone in which the illuminance is not so requested, the second lighting state is generated. It is possible to generate an all-light-off state. In the first lighting state, both the sodium lamp and the light emitting diode lamp are turned on, so that there is an effect that the color rendering properties can be approximated to natural light.
[0028]
Further, when the first lighting state, the second lighting state, and the all-light-off state are continuously generated (claim 2), for example, the first lighting state is from sunset to midnight, and By setting the second lighting state from the sunrise to the sunrise and turning off all the lights from the sunrise to the sunset, a very economically advantageous configuration can be achieved.
[0029]
Further, in the case where a plurality of storage batteries are arranged in a row along the vertical direction in the inner space of the light pole and stored (claim 3), there is no need to install a distribution board separately from the street light, There is an excellent effect that the space near the street light can be enlarged. Therefore, for example, even when the street light according to the present invention is installed on the sidewalk, the sidewalk can be sufficiently secured.
[0030]
Furthermore, in the case where a plurality of storage compartments for storage batteries are formed in the inner space of the lamp pole by partitioning with the support rods, and each storage battery is supported and stored by the support rods respectively (claim 4), Since a conventionally known lamp pole can be used as it is, there is an advantage that an increase in manufacturing cost can be prevented.
[0031]
In the case where a plurality of sub cords are branched from the main cord and the entire lengths of the sub cords are made equal, the energizing cord connecting the discharge / storage control unit and each storage battery is made equal. ), The storage batteries can be electrically connected in parallel without complicating the wiring, and the internal resistance of each slave cord can be equalized, so that the problem that the electromotive force of the storage batteries differs can be eliminated. .
[Brief description of the drawings]
FIG. 1 is a left side view of a street light 1. FIG.
FIG. 2 is a front view of a street light.
FIG. 3 is a bottom view of the lamp 3 with a cover body 8 removed.
FIG. 4 is a front view of the lamp 3;
FIG. 5 is a perspective view showing a reflection plate 9 and a sodium lamp 13;
FIG. 6 is a perspective view of the lamp post 2 showing a storage state of the storage battery 20.
FIG. 7 is a schematic diagram showing a wiring mode between the power controller 30 and the storage battery 20.
FIG. 8 is a block circuit diagram of the street light 1.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Street light 2 Light pole 3 Lighting 5 Windmill generator (power generation device)
8 light emitting diode lamp 11 solar cell panel (power generation device)
12 storage battery section 13 sodium lamp 18 storage compartment for storage battery 19 support rod 20 storage battery 21 power supply cord 22 main cord 23 slave cord 25 main control board (lighting control means)
30 Power controller (discharge / storage control unit)

Claims (5)

A lighting fixture consisting of a sodium lamp and a light-emitting diode lamp is provided on a lamp pole,
A street lamp having lighting control means for turning on or off the sodium lamp and turning on or off the light emitting diode lamp,
The lighting control means includes a first lighting state in which the sodium lamp and the light-emitting diode lamp are turned on, a second lighting state in which only the light-emitting diode lamp is turned on, and an all-off state in which the sodium lamp and the light-emitting diode lamp are turned off. A street light comprising control contents for selectively generating a state. Lighting control means, the first lighting state, the second lighting state, and the all-off state, the first lighting state, the second lighting state, having a control content to continuously generate in the order of the all-off state The street light according to claim 1. In a street light in which a power generator is disposed on a lamppost or a lamp and the lamp is illuminated by the power generated by the power generator,
The storage battery unit configured to store the power generated by the power generation device includes a plurality of storage batteries, and the plurality of storage batteries are arranged in a vertical direction in an inner space of a light pole and stored. The street light according to claim 1 or 2. A plurality of storage compartments for storage batteries are formed in the interior space of the lamppost by using support rods spanned in the transverse direction of the interior space, and the storage batteries are supported and stored by the support rods, respectively. The street light according to claim 3, wherein: The storage battery unit of the power generation device is connected via a power supply cord to a discharge / storage control unit that controls the conversion of the storage battery unit into a discharge state or a storage state, and a plurality of storage batteries are electrically connected in parallel. So,
The energizing cord is composed of a main cord having one end connected to the discharge / storage control unit, a plurality of sub cords having one end connected to the other end of the main cord, and the other end connected to each storage battery. The street light according to claim 3 or 4, wherein the lengths of the slave cords are equal.

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