JPH079286Y2 - Garden light - Google Patents

Description

TECHNICAL FIELD The present invention relates to a garden light provided in a garden, and more specifically, it converts sunlight into electric energy and stores it, and then uses the electric power to change the brightness to the outside. The present invention relates to a garden light that is automatically turned on or off according to the circumstances.

2. Description of the Related Art As a known technique of this type, as shown in Japanese Patent Laid-Open No. 19802/1983, a lighting fixture for a street light, which includes a light source, a storage battery, a solar cell, a photoelectric flasher, and the like, and Kosho
There is a lighting device for a tomb in front of a grave equipped with a solar cell, a storage battery, a light emitting means, a light emitting means, a sound producing means, and a control means disclosed in Japanese Patent Laid-Open No. 63-156.

Problems to be Solved by the Invention Among the above-mentioned conventional techniques, the former (Japanese Patent Laid-Open No. 58-19802) is a practical lighting device for use as a street light or a crime prevention light, but its shape is elegant. No, it is not suitable for installation in a garden or in front of a grave as a light.

Further, in the latter (Jpn. Pat. Appln. KOKAI No. 63-156), since the main body case is made of a hollow box and has many openings, it is easy for wind and rain to enter, and the function of the housing device deteriorates. Therefore, not only is maintenance time-consuming, but it often becomes unusable in a short period of time. Moreover, if the weathering of the main body case progresses due to the entry of wind and rain into the apparatus through the opening, the case will be easily damaged. Further, like the above-mentioned prior art, it was not elegant and had a poor aesthetic appearance, and the installation location was limited.

Except for such problems, the purpose of the present invention is to improve the beauty of the garden lamp, which is elegant, hassle-free maintenance, and can be used for a long period of time. Is to provide.

Means for Solving the Problems The present invention provides a lantern-shaped case 6 and an incandescent lamp mounted as a light source inside the lantern-shaped case 6.
18 and a main body 5 having a rectangular parallelepiped outer shape on the ground, and partially embedded in the upper part of the main body 5, with its light-receiving surface facing upwards, and the light received at the light-receiving surface is electrically converted The solar cell 2 for exchanging energy, and the optical sensor 8 provided near the solar cell 2 for detecting the outside brightness are included. The solar cell 2 and the optical sensor 8 are recessed in the upper portion of the main body 5. A horizontal straight horizontal hole 10 fixed to the formed storage portion 7 and having one end opened on one side surface of the main body 5 is formed extending to an intermediate position in the width direction of the main body 5. A vertical straight-line vertical hole 17 communicating with the horizontal hole 10 at a distance Δd1 from the bottom of the accommodating portion 7 to the one side surface side from the other end of the horizontal hole 10 and further communicating with the lowermost portion of the main body 5, is provided. The tubular body 11 is fitted in the lateral hole 10 over the entire length of the lateral hole 10, and on the upper and lower sides of the peripheral wall of the tubular body 11, An upper communication hole 31 and a lower communication hole 32, which face the hole 17 and communicate with each other, are formed, and a distance Δd2 is formed in the cylindrical body 11 closer to the one side surface than the upper communication hole 31 and the lower communication hole 32. A first partition plate 12 is provided, and a plurality of storage batteries 3 are arranged in series in the cylindrical body 11 in the axial direction of the cylindrical body 11 in the space on the one side surface side of the first partition plate 12. The second partition plate 13 and the controller 14 are arranged in this order in the cylindrical body 11 on the one side surface side with respect to the storage battery 3, and the controller 14 includes the solar cell 2 to the storage battery lead. A diode D that gives an output to the storage battery 3 via lines 1 and 12 to charge it, and a voltage dividing resistor R that divides the output of the storage battery 3 to create a reference voltage V1.
Output V2 via 1, R2 and detection leads 11 and 12 of optical sensor 8
It is connected in series with the comparison means OP1 that compares the output voltage V2 of the optical sensor 8 with the reference voltage V1 by the voltage dividing resistors R1 and R2 to detect that the output V2 becomes less than the reference voltage V1 and the output l7 of the comparison means OP1. A time constant circuit composed of a resistor R4 and a capacitor C connected between the resistor R4 and one terminal of the storage battery 3 on the side opposite to the comparing means OP1, and the output of the time constant circuit is set at a predetermined level V4a. When discrimination is performed and the output V2 of the optical sensor 8 is less than the reference voltage V1 and the output of the time constant circuit reaches the discrimination level V4a or more, the power from the storage battery 3 is supplied through the lighting lead wires 13 and 14. Including the level discriminating means OP2 for giving to the incandescent lamp 18, the storage battery lead wires 1, 12 and the detection lead wires 11, 12 are inserted into the vertical hole 17 and the upper communication hole 31 above the horizontal hole 10. The lighting lead wires 13 and 14 are inserted into the lower communication hole 32 and the vertical hole 17 below the horizontal hole 10, pass through the ground, and A lid 16 which is connected to an incandescent lamp 18 through a lower portion of the basket-shaped case 6 and partially protrudes outward from the one side surface is screwed to the other end of the cylindrical body 11 through an annular packing 15. It is a garden light that is characterized by being.

Operation According to the present invention, in the daytime, the solar cell receives sunlight to charge the storage battery 3, and when the sun goes down and becomes dark, the incandescent lamp 18 is turned on by the output of the storage battery. Therefore, the operability is excellent.

Furthermore, according to the present invention, it is possible to prevent wind and rain from entering the cylindrical body 11 of the lateral hole 10, so that the storage battery and the controller will not be contaminated by rainwater and will not cause a failure. .

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an embodiment in which a battery 1 and a light emitting means 4 included in a garden light of the present invention are separately provided, and FIG. 2 is a perspective view of a case body 5 in which the battery 1 is built. FIG. 3 is a partial sectional view taken along the section line III-III in FIG. As shown in these figures, the case body 5 is formed by removing the upper part of a natural stone material such as granite, which is shaped to have a size of length × width × height of about 10 cm × 60 cm × 60 cm, to form a housing portion 7. It A plurality of solar cells 2 that receive the light of the sun and convert it into electric energy, and an optical sensor 8 that detects the brightness at sunset, dawn, and the like are housed in the housing portion 7 with their light-receiving surfaces facing outward. Be accommodated. The solar cell 2 is
For example, integrated amorphous silicon or polycrystalline silicon is used.

The ceiling portion of the accommodating portion 7 is covered with a light-transmitting plate 9 made of a light-transmitting material such as reinforced plastic, and is made watertight by silicone caulking in a gap with a stone material.

Further, a horizontal hole 10 is formed at a midway portion in the vertical direction of the case main body 5 along the horizontal direction of the main body 5 so as to be horizontally drawn out, and one end of which is opened to one side surface of the main body 5. A metal cylinder 11 is fitted into the lateral hole 10. In this cylindrical body 11 from the back,
Three storage batteries 3 made of nickel cadmium are arranged in series via a first partition plate 12, and a controller 14 is arranged with the second partition plate 13 interposed therebetween. The controller 14 receives a detection signal from the optical sensor 8 to conduct or cut off the electric power from the storage battery 3, and when the amount of received light becomes a predetermined value or less at the time of sunset, the light source 18 of the light emitting means 4 Is turned on, and the light source 18 is turned off when the amount of light received during sunshine or the like becomes larger than the predetermined value.

The opening of the cylindrical body 11 is covered with a lid 16 via an annular packing 15.
Is screwed on and closed in a watertight state. In the center of the case body 5, a vertical hole 17 is provided which penetrates the body 5 in the up-down direction in FIG. 3 and communicates with the housing portion 7 and the cylindrical body 11. In this vertical hole 17, storage lead wires 1 and 12 connecting the solar cell 2 and the storage battery 3, detection lead wires 11 and 12 connecting the optical sensor 8 and the controller 14, the storage battery 3 and the light emitting means 4 are provided. The lighting lead wires 13 and 14 to be connected are arranged. The vertical hole 17 is a small hole having a diameter of about 10 mm, and also serves as a water drain hole when water enters the housing portion 7 or the cylindrical body 11.

The light emitting means 4 has an incandescent lamp as a light source 18 mounted inside a lantern case 6 via a socket 19.

FIG. 4 is a block diagram showing a specific configuration of the control circuit 20 according to the controller 14. The control circuit 20 is provided with connection terminals 21 and 22 to which the storage lead wires 1 and 12 extending from the solar cell 2 are respectively connected, and the connection terminal 21 includes a diode D
The anode of is connected. Resistors R1 and R2 are connected in series to the cathode of the diode D via a line l3, and the resistor R2 is connected to the connection terminal 22 via a line l4 to form a closed loop. A storage battery 3 for storing electric power generated by the solar cell 2 is provided between the lines l3 and l4.

A line l5 is connected between the resistors R1 and R2, and a line l5
Is connected to the non-inverting input terminal of the first differential amplifier OP1.
Therefore, at the non-inverting input terminal of the first differential amplifier OP1,
The reference voltage V1 determined by the resistors R1 and R2 is input.

Further, the line l is connected to the inverting input terminal of the first differential amplifier OP1.
The lead wire for detection is connected between the connection terminal 23 and the connection terminal 24 to which the line l4 is connected.
A light receiving element Ds, which is realized by a photodiode or the like, is connected via 11 and 12 to form an optical sensor 8. Therefore, the detection voltage output by photoelectric conversion when the light receiving element Ds receives light is input to the inverting input terminal of the first differential amplifier OP1.

The resistor R4 is connected to the output terminal of the first differential amplifier OP1, and is connected to the non-inverting input terminal of the second differential amplifier OP2 via the line l7. A resistor R3 is connected in parallel between the inverting input terminal and the output terminal of the first differential amplifier OP1,
The gain with respect to the input voltage input to the non-inverting input terminal is set by the resistor R3.

The line 18 is connected to the output terminal of the second differential amplifier OP2, and the line 18 is connected to the connection terminal 25. A connection terminal 26 is connected to the line l4 via a line l9, and a light source 18 as a load is connected to the connection terminals 25 and 26 via lighting lead wires 13 and 14. The output terminal of the second differential amplifier OP2 is connected to the inverting input terminal via the line 10. The first and second differential amplifiers OP1 and OP
Driving power is supplied to 2 via a power supply line (not shown). A capacitor C is connected between the line l7 and the line l4, and the reference voltage input to the non-inverting input terminal of the second differential amplifier OP2 is determined by the resistor R4 and the capacitor C.

The operation mode will be described above. In the daytime, the solar cell 2 receives sunlight and exchanges light energy for electric energy, and the electric energy is charged in the storage battery 3. This electric energy is generated by the light sensor 18 by detecting the sunset.
Sent to and lighted. A more specific description will be given with reference to FIGS. 5 and 6.

FIG. 5 is a graph showing the input voltage input to each input terminal of the first differential amplifier OP1, and FIG. 6 is a timing for explaining the operating states of the first and second differential amplifiers OP1 and OP2. It is a chart. In a state in which light from the sun is applied to the solar cell 2 during the daytime, the solar cell 2 generates electromotive force by photoelectric conversion, and the power is stored in the storage battery 3. When the sunset time is reached from such a state, the irradiation amount of light from the sun to the solar cell 2 is reduced, and the detection voltage V2 by the light receiving element Ds of the optical sensor 8 becomes dark as shown in FIG. As it becomes, it decreases from time t1 with the passage of time, and becomes 0 at time t2. On the other hand, the electric power from the storage battery 3 charged by the solar cell 2 is supplied to the lines l3, l4 and the resistor R
It is input to the non-inverting input terminal of the first differential amplifier OP1 from the line l5 via 1, R2. Therefore, this voltage V1 is always constant.

Voltage V2 input to the inverting input terminal of the first differential amplifier OP1
Becomes lower than the reference voltage V1 at time t3, and at this time, as shown in FIG. 6 (1), the first differential amplifier
The output voltage V3 from the output terminal of OP1 becomes high level,
Such an output voltage is input to the non-inverting input terminal of the second differential amplifier OP2 as the input voltage V4 as shown in FIG. 6 (2) from the line l7 via the resistor R4. Such a voltage V4 rises from time t3 by the capacitor C, and when it reaches a predetermined voltage level V4a, the output voltage V5 from the output terminal of the second differential amplifier OP2 is changed to FIG. 6 (3). Set to high level as shown in. Therefore, the output voltage V5
Can be supplied to the light source 18 via the line 18 to cause the light source 18 to emit light.

Further, when the solar cell 2 is irradiated with the light from the sun at time t4, the voltage V2 input to the inverting input terminal of the first differential amplifier circuit OP1 rises, and further input to the non-inverting input terminal at time t5. The reference voltage is V2 or higher. At this time, the output voltage V3 from the output terminal of the first differential amplifier OP1 becomes low level as shown in FIG.
It is input to the non-inverting input terminal of the differential amplifier OP2. The input voltage V4 decreases as shown in FIG. 6 (2). Due to such a decrease in the voltage V4, as shown in FIG. 6 (3), the output voltage V5 at the output terminal of the second differential amplifier OP2 becomes low level, and the light source 18 is turned off.

To further describe the configuration, a horizontal straight horizontal hole 10 having one end opening on one side surface of the main body 5 is formed to extend to an intermediate position in the width direction of the main body 5, and the main body 5 has a bottom of the accommodating portion 7. From the other end of the lateral hole 10 to the one side surface with a distance Δd1 in between, and communicated with the lateral hole 10, and further provided with a vertical straight-line vertical hole 17 communicating with the lowermost part of the main body 5, in the lateral hole 10, Side hole 10
The cylindrical body 11 is fitted over the entire length of the cylindrical body 11, and an upper communication hole 31 and a lower communication hole 32 that face the vertical hole 17 and communicate with each other are formed above and below the peripheral wall of the cylindrical body 11. Inside, the upper communication hole 31
Also, a first partition plate 12 is provided at a distance Δd2 closer to the one side surface than the lower communication hole 32, and a plurality of cylinders 11 are provided in the space on the one side surface side of the first partition plate 12. Storage battery 3
Are arranged and stored in series in the axial direction of the cylinder 11, and the second partition plate 13 and the controller 14 are arranged in this order in the cylinder 11 on the one side surface side of the storage battery 3. , The controller 14
A diode D for giving an output from the solar cell 2 via the storage battery lead wires 1, 12 to the storage battery 3 for charging, a voltage dividing resistor R1, R2 for dividing the output of the storage battery 3 to form a reference voltage V1, and an optical sensor 8 Comparing means OP1 for comparing the output V2 via the detection lead wires 11, 12 with the reference voltage V1 by the voltage dividing resistors R1, R2 and detecting that the output V2 of the optical sensor 8 becomes less than the reference voltage V1; A time constant circuit composed of a resistor R4 connected in series to the output l7 of the comparison means OP1 and a capacitor C connected to one terminal of the storage battery 3 on the opposite side of the resistance R4 from the comparison means OP1, and a time constant. Predetermined level V4a for circuit output
When the output V2 of the optical sensor 8 is less than the reference voltage V1 and the output of the time constant circuit reaches the discrimination level V4a or higher, the power from the storage battery 3 is turned on by the lead wire for lighting.
Including the level discrimination means OP2 to give to the incandescent lamp 18 through 13,14, in the vertical hole 17 and the upper communication hole 31 above the horizontal hole 10,
The storage battery lead wires 1, 12 and the detection lead wires 11, 12 are inserted, and the lighting lead wires 13, 14 are connected to the lower communication hole 32.
And it is inserted into the vertical hole 17 below the horizontal hole 10 and through the ground,
It is connected to the incandescent lamp 18 through the lower part of the lantern-shaped case 6 and has a cylindrical body.
A lid 16 partially protruding outward from the one side surface is screwed to the other end portion of 11 via an annular packing 15.

Effects of the Invention According to the present invention, the lantern-shaped case 6 and the rectangular parallelepiped main body 5 made of stone are separately arranged, and can be suitably used as a garden light.

Moreover, it can be turned off automatically in the daytime and turned on at night, and the operability is good.

Particularly, in the present invention, a cylinder 11 is fitted over the entire length in a horizontal straight hole 10, and a plurality of storage batteries 3 are axially connected in series in the cylinder 11 via a first partition plate 12. It is arranged and housed, and further, a controller 14 is provided via the second partition plate 13, so that the storage battery 3 and the controller 14 for rainwater are provided.
It is possible to prevent stains from coming into contact with rainwater, especially to prevent the controller 14 from coming into contact with rainwater, and prevent occurrence of a failure.

Further, according to the present invention, the upper and lower vertical holes 17 are communicated with the cylindrical body 11 with a distance Δd1, and the upper and lower communication holes 31, 3 of the cylindrical body 11 are communicated with each other.
Since the lead wires are inserted into and guided by the lead wires 2, the excellent effect that the tubular body 11 can be easily incorporated into the main body 5 together with the lead wires is achieved.

Further, in the present invention, the first partition plate 12 is formed apart from the upper and lower communication holes 31 and 32 with a distance Δd2, which makes it more reliable that rainwater and the like enter the storage battery 3. It is prevented.

Further, the controller 14 can be opened and closed from the outside by a lid 16 in the tubular body 11 via an annular packing 15, and the controller 14
It can be adjusted and the maintenance is excellent.

Particularly, in the present invention, the output of the comparing means OP1 is given to the time constant circuit consisting of the resistor R4 and the capacitor C, and the output of this time constant circuit is given to the level discriminating means OP2. The incandescent lamp 18 does not immediately turn on even when the sunlight is temporarily blocked, for example, when a bird or the like flies upward and the sunlight to the optical sensor 8 is temporarily blocked. Malfunction is prevented.
As a result, the electric power of the electric storage device 3 is not wasted, and thus the electric power of the solar cell 2 can be sufficiently stored in the electric storage device.

Further, according to the present invention, the battery 3 and the electric circuit elements related thereto are housed in the lateral hole 10 of the main body 5 and closed by the lid 16, thereby preventing water from entering from the outside, and further, the housing portion. A vertical hole 17 is formed so as to communicate with the bottom of the horizontal hole 10 from the bottom of the horizontal hole 10 so that even if water enters, the vertical hole 17 discharges the water to the outside. The lead wires 1, l2; 13, 14 are inserted so that the wires can be electrically connected, and the lead wires cannot be seen outside. Thus, the present invention achieves excellent effects.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is an enlarged perspective view of a case body having a built-in power storage means, FIG. 3 is a sectional view taken along line III-III of FIG. 2, and FIG. A block diagram of the control circuit, FIG. 5 is a graph showing an input voltage to the first differential amplifier, and FIG. 6 is a timing chart of the differential states of the first and second differential amplifiers. 1 ... heat storage means, 2 solar cell, 3 ... storage battery, 4 ... light emitting means, 5 ... case body, 7 ... housing section, 8 ... photosensor, 9 ... translucent plate, 10 ... lateral hole , 11 …… Cylinder, 14…
… Controller, 18 …… Light source, 20… Control circuit, OP1 …… First
Differential amplifier, OP2 ... Second differential amplifier

Claims (1)

[Scope of utility model registration request] 1. A lantern-shaped case 6 and an incandescent lamp mounted as a light source inside the lantern-shaped case 6.
18 and a main body 5 having a rectangular parallelepiped outer shape on the ground, and partially embedded in the upper part of the main body 5, with its light-receiving surface facing upwards, and the light received at the light-receiving surface is electrically converted The solar cell 2 for converting into energy, and the optical sensor 8 provided near the solar cell 2 for detecting the outside brightness are included. The solar cell 2 and the optical sensor 8 are recessed in the upper portion of the main body 5. A horizontal straight horizontal hole 10 fixed to the formed storage portion 7 and having one end opened on one side surface of the main body 5 is formed extending to an intermediate position in the width direction of the main body 5. A vertical straight-line vertical hole 17 communicating with the horizontal hole 10 at a distance Δd1 from the bottom of the accommodating portion 7 to the one side surface side from the other end of the horizontal hole 10 and further communicating with the lowermost portion of the main body 5, is provided. The tubular body 11 is fitted in the lateral hole 10 over the entire length of the lateral hole 10, and on the upper and lower sides of the peripheral wall of the tubular body 11, An upper communication hole 31 and a lower communication hole 32, which face the hole 17 and communicate with each other, are formed, and a distance Δd2 is formed in the cylindrical body 11 closer to the one side surface than the upper communication hole 31 and the lower communication hole 32. A first partition plate 12 is provided, and a plurality of storage batteries 3 are arranged in series in the cylindrical body 11 in the axial direction of the cylindrical body 11 in the space on the one side surface side of the first partition plate 12. The second partition plate 13 and the controller 14 are arranged in this order in the cylindrical body 11 on the one side surface side with respect to the storage battery 3, and the controller 14 includes the solar cell 2 to the storage battery lead. A diode D that gives an output to the storage battery 3 via lines 1 and 12 to charge it, and a voltage dividing resistor R that divides the output of the storage battery 3 to create a reference voltage V1.
Output V2 via 1, R2 and lead wires 11, 12 for detection of optical sensor 8
It is connected in series with the comparison means OP1 that compares the output voltage V2 of the optical sensor 8 with the reference voltage V1 by the voltage dividing resistors R1 and R2 to detect that the output V2 becomes less than the reference voltage V1 and the output l7 of the comparison means OP1. A time constant circuit consisting of a resistor R4 and a capacitor C connected between the resistor R4 and one terminal of the storage battery 3 on the side opposite to the comparing means OP1, and the output of the time constant circuit is set at a predetermined level V4a. When discrimination is performed and the output V2 of the optical sensor 8 is less than the reference voltage V1 and the output of the time constant circuit reaches the discrimination level V4a or more, the power from the storage battery 3 is supplied through the lighting lead wires 13 and 14. Including the level discriminating means OP2 to give to the incandescent lamp 18, the storage battery lead wires 1, 12 and the detection lead wires 11, 12 are inserted into the vertical hole 17 and the upper communication hole 31 above the horizontal hole 10. The lighting lead wires 13 and 14 are inserted into the lower communication hole 32 and the vertical hole 17 below the horizontal hole 10, pass through the ground, and A lid 16 which is connected to an incandescent lamp 18 through the lower part of the basket-shaped case 6 and partially protrudes outward from the one side surface is screwed to the other end of the cylindrical body 11 through an annular packing 15. A garden light that is characterized by being.