JPH0546238Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a circuit for a lamp that uses solar light energy, and is particularly applicable when a photosensitive sensor is not used and the power supply is reduced. The present invention relates to a circuit for a lamp that uses solar energy and has a latching circuit that automatically supplies power to a light emitting body with low power consumption.

(Conventional technology) Conventionally, lighting equipment that uses solar energy is
It is designed to absorb solar energy during the day, convert it into electrical energy, and then feed this electrical energy to a storage battery to charge it, and at night, it emits electricity to light up light bulbs, etc. was.

(Problem to be solved by the invention) However, the above-mentioned lamps are always equipped with a photosensitive mechanism that detects the surrounding brightness, such as a photosensitive sensor used in street lights, and this photosensitive sensor complicates the structure of the lamp. Moreover, it was not possible to interrupt the power supply before the power in the storage battery was exhausted. That is, a light bulb that has been turned on before the power is consumed continues to shine, consuming a large amount of power, and thus requiring a long time for the next charge.

As a result of painstaking research to improve the shortcomings of such well-known lamps, the inventor developed a solar light that does not require the use of known light-sensitive sensors and has an element for sensing situations where there is a lack of electricity. They succeeded in completing a lighting circuit that uses energy.

In other words, the purpose of the present invention is to improve the above-mentioned known technology by eliminating the need to use a known photosensitive sensor and automatically supplying power to a light emitting element that consumes less power when power is insufficient. An object of the present invention is to provide a lamp circuit that utilizes solar light energy and solves the existing drawbacks.

(Means for Solving the Problems) In order to solve the above problems, the present invention comprises a storage battery, a solar energy board, a lighting circuit, a charging and sensing circuit, and a latching circuit, The circuit includes a shot diode connected in series between the storage battery and the solar energy board, and a transistor having a base connected to the solar energy board and an emitter and a collector connected between the storage battery and the latching circuit; The latching circuit has a multivibrator loop consisting of two pairs of transistors, one pair of transistors consisting of a first transistor and a second transistor is connected to a light emitting diode, and another pair of transistors consisting of a third transistor and a fourth transistor are connected to a light emitting diode. connected to a relay; the trigger signal of the charging and sensing circuit is introduced through the switch to the collectors of the first and second transistors and the positive power supply line; the bases of the pair of transistors can control the bias; It is connected to the manual/automatic selection switch; The contacts of the above relay are also connected to the positive power line and the lighting circuit; When the power of the storage battery is insufficient, the light emitting diode will simply turn on. It is characterized by having been configured.

(Function of the invention) According to the above configuration, the solar energy plate can be directly used as a photosensitive element. Note that when the automatic mode is selected, it can be determined which of the light emitting bodies, such as a light bulb, a fluorescent lamp, and a light emitting diode, will be turned on depending on the magnitude of the electric power.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.

As shown in FIG. 1, the circuit according to the present invention is
It mainly consists of a storage battery 11, a charging and sensing circuit 1, a solar energy absorbing plate 12, a latching circuit 2, a mode selection switch 41, a fluorescent lamp operating circuit 42, and a light bulb 43.

The solar light energy absorption plate 12 absorbs the solar light energy and converts it into electrical energy, and also connects the storage battery 1 through the charging and sensing circuit 1.
It can be charged to 1. While the solar light energy absorbing plate 12 is not absorbing solar light energy, that is, while the surroundings are dark, the voltage of the charging and sensing circuit 1 decreases, so this charging and sensing circuit 1 can be used as a sensing element.

When the surroundings are dark, that is, in bad weather or at night when there is little sunlight energy, the charging and sensing circuit 1 automatically connects the storage battery 11 to the latching circuit 2 and activates the latching circuit 2. . At this time, the mode selection switch 41
Since it is possible to select which of the fluorescent lamp 47 (see Fig. 2) and the light bulb 43 is lit,
It also has the effect of automatically illuminating in bad weather or at night.

When the power in the storage battery 11 is insufficient, the latching circuit 2 automatically switches on the fluorescent lamp 47 and the light bulb 43.
The power consumption from the storage battery 11 is reduced by interrupting the circuit connected to the storage battery 11 and lighting the light emitting diode 21 which consumes less power.

FIG. 2 is an actual circuit diagram of the present invention. As shown, the charging and sensing circuit 1 is connected in series between the solar energy board 12 and the storage battery 11 through a Schottky diode 13. Note that the transistor 14 is connected to the solar energy board 12 through its base, and its collector and emitter are connected between the storage battery 11 and the latching circuit 2. The light energy supplied from the solar energy board 12 is charged to the storage battery through the shot diode 13. Then, at night, the voltage of the solar energy plate 12 decreases, activating the transistor 14 and supplying current to the latching circuit 92, which lights up the fluorescent lamp 47 or light bulb 43.

A switch 15 is arranged on the power supply line of the latching circuit 2 to determine whether or not the latching circuit 2 operates. Generally, the circuit 2 of the latching circuit is a triggered multivibrator loop consisting of a first transistor 24, a second transistor 25, a third transistor 26 and a fourth transistor 27. The collector of the first transistor 24 is connected to the power supply line, and the collector of the second transistor 25 is connected to the power supply line.
is connected to the light emitting diode 21, and the fourth transistor 27 is connected to the relay 28. The operating contact of the relay 28 is connected in series to the power supply line,
A mode selection switch 41 allows the relay 28 to determine whether the fluorescent lamp 47 or the light bulb 43 will be turned on.

A manual/automatic selection switch 23 is connected to the base of the first transistor 24, and this switch 23 can change the base bias of the first transistor 24. Furthermore, since the trigger type button 22 is arranged between the collector of the first transistor 24 and the positive power supply line,
It can be turned on manually.

The operation of the above embodiment will be explained in detail below.

When the manual/automatic selection switch 23 is set to the automatic mode, when the solar energy plate 12 senses that night has fallen, the transistor 14 is activated to apply appropriate bias to the third and fourth transistors 26 and 27. As a result, the transistor 27 activates the relay 28 and the fluorescent lamp 47 or light bulb 43
lights up. Note that when the power of the storage battery 11 is insufficient, the bias provided to the transistor 26 is also insufficient, and as a result, the operation of the third and fourth transistors 26 and 27 is stopped and the lighting circuit is not activated. become a state. That is,
The lighting circuit is automatically interrupted when there is insufficient power.

In the above state, the transistor 26 does not operate, so when the first transistor 24 operates, the second transistor 25 also operates, and as a result, the light emitting diode 21 lights up. Lighting of the light emitting diode 21, which consumes less power, has the effect of warning related parties as an indication of power shortage, and also has the effect of preventing the power from running out.

Note that when the manual/automatic selection switch 23 is set to manual mode, the first transistor 2
The bias given to the base of 4 is weakened. That is, when the sensitivity of the first transistor 24 is increased, the signal from the power supply line connected to the latching circuit 2 is as follows.
Similarly, the first and second transistors 24 and 25 are operated, but the third and fourth transistors 26 and 2 are operated.
7 is not activated. In this case, the light emitting diode is simply activated, but a subsequent procedure of pressing the trigger button 22 is required to activate the lighting circuit.

As shown in FIG. 3, the circuit of the present invention is used in the illustrated lamp.

(Effects of the Invention) As described above, according to the present invention, not only can the solar energy plate be used directly as a photosensitive element, but also manual mode and automatic mode can be easily selected. Furthermore, when the automatic mode is selected, it is possible to decide whether to turn on any of the light emitting bodies, such as light bulbs, fluorescent lamps, and light emitting diodes, depending on the amount of power, so power consumption can be kept to a minimum.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram showing an embodiment of the present invention, FIG. 2 is a circuit diagram showing the above embodiment, and FIG.
The figure is a perspective view of a lamp using the circuit of the above embodiment. Explanation of symbols, 1... Charging and sensing circuit, 11...
...Storage battery, 12...Solar energy board, 13...
Schottky diode, 14...transistor,
15...Switch, 21...Light emitting diode, 2
2...Trigger type button, 23...Switch, 24
...First transistor, 25...Second transistor, 26...Third transistor, 27...Fourth transistor, 42...Fluorescent lamp lighting circuit, 43...
Light bulb, 44...transistor, 45, 46...inductance, 47...fluorescent light.

Claims (1)

[Scope of utility model registration claim] Storage battery, solar energy board, lighting circuit,
It consists of a charging and sensing circuit and a latching circuit, and the charging and sensing circuit includes a shot diode connected in series between the storage battery and the solar energy board, a base connected to the solar energy board, and an emitter and a collector connected to the storage battery. and a transistor connected between the latching circuit and the latching circuit; the latching circuit has a multivibrator loop consisting of two pairs of transistors, and a pair of transistors consisting of a first transistor and a second transistor are connected to a light emitting diode. , another pair of transistors consisting of a third transistor and a fourth transistor are connected to the relay; the trigger signal of the charging and sensing circuit is introduced through the switch to the collectors of the first and second transistors and to the positive power line. The bases of the above pair of transistors are connected to a manual/automatic selection switch that can control the bias; the contacts of the above relay are connected to the positive power line and the lighting circuit; 1. A circuit for a lamp using solar light energy, characterized in that the light emitting diode is simply turned on when there is a shortage of solar light energy.