JPH08241791A - Control device of illluminating lamp - Google Patents

Abstract

PURPOSE: To change the illuminance of a illuminating lamp within a prescribed range and at a prescribed period to impart a proper expansion and contraction motion to the pupils, and keep the health. of the eyes. CONSTITUTION: An illuminance setting input signal S1 is generated from an illuminance set signal generating circuit 20 on the basis of a count value set in an illuminance setting counter 15 by the operation of an illuminance setting switch 10, and the illuminance setting input signal S1 is inputted to an input signal variable circuit 21. An operation signal S2 changed in increasing direction and the decreasing direction synchronously with an AC power source at a change ratio according to the period every 1/2 period of the period set by a period setting counter 16 is generated, and the operation signal 53 is added to a gate control circuit 2. A gate signal S3 for changing the ignition phase in each half cycle in advance direction with the lapse of time in the increasing process of the operation signal S2, and changing the ignition phase in each half cycle in delay direction with the lapse of time in the decreasing process of the operation signal S3 is outputted to ignite a two-way thyristor 6 with control electrode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an illuminating lamp, and more particularly, it changes the illuminance of the illuminating lamp in a predetermined setting range and in a predetermined cycle in order to give an appropriate narrowing and expanding movement to a pupil. The present invention relates to a control device for an illumination lamp.

[0002]

2. Description of the Related Art Lighting for drawing, reading, surgery in a hospital, etc., generally illuminates the entire room with an illumination lamp installed on the ceiling or the like, and a local area such as a work surface or a desk. A method of illuminating the illuminance to an optimum illuminance by an illumination lamp separately provided is adopted.

[0003]

Conventionally, the illuminance of an illumination lamp used for such local illumination is set to a predetermined value defined based on the Occupational Safety and Health Regulations.
That is, since the illuminance of the conventional lighting fixture used for local illumination is controlled to be constant, the brightness of the illuminated portion and the amount of light reflected from the illuminated portion and entering the eye are also substantially constant, The opening of the pupil hardly changes. Therefore, if this state continues for a long time, there is a problem that the blood circulation in the eye deteriorates, and further, the discharge of the aqueous solution from the eye also decreases, and the health of the eye is impaired.

The present invention has been made in view of the above circumstances, and changes the illuminance of an illuminating lamp within a predetermined range and at a predetermined cycle to give an appropriate narrowing and expanding motion to the pupil of the eye to improve eye health. It is an object of the present invention to provide a control device for a lighting lamp that can be maintained.

[0005]

In order to achieve the above object, the invention of claim 1 is an illumination lamp connected to an AC power source through a semiconductor element having a control pole, and an illumination intensity for setting the illumination intensity of the illumination lamp. A setting switch, a cycle setting switch for setting a cycle of illuminance change of the lighting, an illuminance setting counter for counting a clock signal by operating the illuminance setting switch and setting the illuminance of the lighting, and the cycle A cycle setting counter that counts a clock signal by operating a setting switch to set a change cycle of the illuminance of the illumination lamp, and an illuminance setting signal generator that generates an illuminance setting input signal according to the count value of the illuminance setting counter Circuit and the illuminance setting input signal from the illuminance setting signal generation circuit are changed according to the cycle every 1/2 cycle of the cycle set in the cycle setting counter. In the process of increasing the operating signal based on the operating signal from the input signal variable circuit for converting into an operating signal changing in the increasing direction and an operating signal changing in the decreasing direction in synchronization with the AC power supply, The ignition phase in each half cycle of the AC waveform changes in the advancing direction with the passage of time, and in the decreasing process of the operation signal, the ignition phase in the half cycle of the AC waveform changes in the retarding direction with the passage of time. And a gate control circuit for igniting the semiconductor element with the control pole by generating the gate signal and applying the gate signal to the gate of the semiconductor element with the control pole.

According to a second aspect of the present invention, in the control device for an illuminating lamp according to the first aspect, there is further provided display means for displaying the illuminance set in the illuminance setting counter and the cycle set in the cycle setting counter. It will be.

[0007]

In the present invention having the above structure, the voltage level of the illuminance setting input signal is set in the cycle setting counter by inputting the illuminance setting input signal from the illuminance setting signal generating circuit to the input signal variable circuit. In the first 1/2 period of the cycle, the AC waveform changes in an increasing direction every half cycle of the AC waveform at the rate of change corresponding to the cycle, and in the remaining 1/2 period, the half cycle of the AC waveform at the rate of change corresponding to the cycle. The input signal variable circuit generates an operation signal that changes in each direction, and this operation signal is applied to the gate control circuit, so that the firing phase in each half cycle changes with time in the process of increasing the voltage level of the operation signal. Gate signals that change in the advancing direction with the passage of time and the firing phase in each half cycle changes in the advancing direction with the passage of time in the process of decreasing the voltage level of the operating signal. Output from the circuit, the gate signal to ignite the semiconductor device with the control electrode by applying the gate control electrode with the semiconductor device, supplies the phase-controlled voltage to the lamp. Therefore, it is possible to cause periodic narrowing and expanding motions of the pupil of the illumination light user and maintain the eye health.

Further, in the present invention, by providing a display means for displaying the illuminance set in the illuminance setting counter and the cycle set in the cycle setting counter, the illuminance setting status and the cycle setting status can be visually recognized. You can

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a configuration diagram of an illumination lamp control device according to the present invention. In FIG. 1, 1A and 1B are AC power supply terminals, and a power supply display element 3 including a light emitting diode or the like is connected between the AC power supply terminals 1A and 1B via a power switch 2. Reference numeral 4 denotes an illumination lamp for local illumination, one end of which is connected to the AC power supply terminal 1B and the other end of which is 2
It is connected to the AC power supply terminal 1A via a winding type choke coil 5, a bidirectional thyristor with a control pole (triac: trade name of GE company) 6, a variable resistor 9 and a power switch 2. Reference numeral 7 is a photocoupler for switching the bidirectional thyristor 6 with a control pole in synchronization with the frequency of the AC power supply. The photocoupler 7 is composed of a photo SSS (silicon symmetrical switch) 7a and a photodiode 7b. Both ends of the photo SSS 7a are connected between the first anode and the gate of the bidirectional thyristor 6 with a control electrode. Reference numeral 8 denotes a load current detection circuit that detects a current flowing through the lighting lamp 4. The load current detection circuit 8 includes a pair of light emitting diodes 8a that emit light when a current of a predetermined value or more flows through the lighting lamp 4 and this light emitting diode. And a phototransistor 8a which is conductive when receiving light from 8b.

In FIG. 1, 10 is an illuminance setting switch for setting the illuminance of the illuminating lamp 4, 11 is a cycle setting switch for setting the cycle of illuminance change of the illuminating lamp 4, and the illuminance setting switch 10 and the cycle setting The switch 11 is connected between the Vcc power supply terminal and the ground. Further, the Vcc power supply terminal has a NAND gate 12 gated by an “L” signal when the illuminance setting switch 10 is turned on and a NAND gate 13 gated by an “L” signal when the cycle setting switch 11 is turned on. Are connected to each of these NAs
A clock signal generated by the clock generator 14 is input to the other input terminals of the ND gates 12 and 13. N
The output side of the AND gate 12 is connected to an m-ary illuminance setting counter 15 for setting the illuminance of the illuminating lamp 4 to the illuminance desired by the user by counting the clock signals passing through the AND gate 12. . Further, at the output end of the NAND gate 13, by counting the clock signals passing therethrough, the illuminance of the illumination lamp 4 set above is increased or decreased within a preset change width (for example, ± 7%). Cycle for continuously changing the direction (for example, 0.6 seconds to 20 seconds)
An n-ary period setting counter 16 for setting a range of minutes) is connected.

On the output side of the illuminance setting counter 15 and the cycle setting counter 16, respective display drive circuits 17 and 1 are provided.
Display 1 for displaying the setting status of illuminance and cycle via 8
9 is connected. The display drive circuit 17 of the illuminance setting counter 15 decodes the count value of the illuminance setting counter 15 and outputs a light emitting element drive signal having a display level corresponding to the count value. Reference numeral 18 is for decoding the count value of the cycle setting counter 16 and outputting a light emitting element drive signal of a display level according to the count value. Further, the display device 19 is configured by arranging a large number of light emitting elements such as light emitting diodes linearly so that the level of illuminance and the period can be displayed in a bar shape.

In FIG. 1, 20 is an illuminance setting counter 1.
The illuminance setting signal generating circuit generates an illuminance setting input signal S1 according to the count value of 5, and the illuminance setting input signal S1 output from the illuminance setting signal generating circuit 20 is input to the input signal variable circuit 21. Is entered. The input signal varying circuit 21 is an input signal S1 from the illuminance setting signal generating circuit 20.
The first 1 / th of the cycle set in the cycle setting counter 16
In the second period, the rate of change corresponding to the cycle is changed linearly in an increasing direction, and in the remaining half period, the rate of change corresponding to the cycle is linearly changed in a decreasing direction. The signal output from the input signal variable circuit 21 is input to the gate control circuit 22 of the bidirectional thyristor 6 with a control pole as the operation signal S2.

The gate control circuit 22 supplies a gate signal S3 for firing the bidirectional thyristor 6 with a control pole at a desired time synchronized with the power supply, and the generation phase of the gate signal S3 is the phase. It is controlled by the control signal S2. The gate signal S3 output from the gate control circuit 22 is supplied to the photodiode 7b of the photocoupler 7.

In FIG. 1, reference numeral 23 denotes an operation display section for displaying the operation state at the time of setting the illuminance and at the time of setting the cycle. The operation display section 23 has a illuminance setting switch 10 and a cycle setting switch via a drive circuit 24. 11 is connected.
Further, an overcurrent prevention circuit 25 is connected to the phototransistor 8b of the load current detection circuit 8, and when the phototransistor 8b is turned on, the overcurrent prevention circuit 25 is operated to stop oscillation of the gate control circuit 22. Output a signal. Reference numeral 26 is a power supply circuit connected to the subsequent stage of the power supply switch 2, and this power supply circuit 26 includes the setting switches 10, 1
1, VCD voltage is supplied to the display drive circuits 17, 18, 24, the display unit 19, the operation display unit 23, etc., and the counters 15, 16, the illuminance setting signal generation circuit 20, the input signal variable circuit 21, the gate control circuit An operating voltage is supplied to 22 and the like.

Next, the operation of the illumination lamp control device of the present embodiment having the above-mentioned structure will be described. Power supply terminal 1
A and 1B are connected to an AC power source, and the power switch 2 is turned on to activate the lamp control device. In such a state, the operation signal S output from the input signal variable circuit 21
When 2 is supplied to the gate control circuit 22, the gate control circuit 22 generates a gate signal S3 whose generation phase changes with the passage of time in synchronization with the power supply. When this gate signal S3 is supplied to the photo coupler 7, the photo SS
S7a becomes conductive, and the bidirectional thyristor 6 is fired in accordance with the generation phase of the gate signal S3 which changes with the passage of time, thereby supplying the phase-controlled voltage to the illumination lamp 4. As a result, the illumination lamp 4 is turned on at the illuminance set in the illuminance setting counter 15, and the illuminance periodically changes in the increasing direction and the decreasing direction at the cycle set in the cycle setting counter 16.

The case of setting the illuminance of the illumination lamp 4 will be described. In this case, the illuminance setting switch 10 is pushed on. As a result, when the “L” signal obtained by grounding the Vcc voltage is input to the display drive circuit 24, the operation display unit 23 operates to display the operation state of illuminance setting. Further, when the illuminance setting switch 10 is pushed on, one input signal of the NAND gate 12 having the Vcc voltage as one input becomes “L”, so that the clock generated at the other input terminal of the NAND gate 12 is generated. Bowl 1
The clock signal from 4 is output to the illuminance setting counter 15 through the NAND gate 12 and counted. At this time, the count value of the illuminance setting counter 15 is incremented by being added to the count value set last time. And
When the count value reaches m + 1, it is reset and counted from the beginning. The count value of the illuminance setting counter 15 is sequentially read by the display drive circuit 17, is decoded into a light emitting element drive signal of a display level according to the count value, and is then displayed on the display unit 19.
The light emitting element constituting the display device 19 is turned on by outputting to, and the level of the set illuminance is displayed by a bar. Therefore, by adding an illuminance scale near the bar display,
From this illuminance scale, the illuminance of the illumination lamp at the time of setting can be known.

On the other hand, when the count value of the illuminance setting counter 15 is taken into the illuminance setting signal generating circuit 20, the illuminance setting signal generating circuit 20 outputs an illuminance setting input signal (voltage) S1 having a level corresponding to the count value. To be done. This input signal S
The level of 1 increases as the count value increases, and decreases as the count value decreases. In this way, by increasing or decreasing the voltage level of the input signal S1 according to the count value, the ignition timing in each half cycle of the AC voltage waveform is adjusted to adjust the lighting lamp 4.
Set the illuminance of to the value desired by the user. Further, an illuminance setting input signal S generated from the illuminance setting signal generation circuit 20.
When 1 is input to the input signal variable circuit 21, the illuminance setting input signal S1 has a change rate corresponding to the illuminance setting input signal S1 in the first half period of the cycle in which the voltage level is set in the cycle setting counter 16. AC changes linearly in an increasing direction every half cycle of the meter, and AC changes linearly in a decreasing direction every half cycle of the meter at the rate of change corresponding to the cycle in the remaining 1/2 period. Is converted into an operating signal S2 to be supplied to the gate control circuit 22.

Next, the case of setting the cycle for changing the illuminance of the illumination lamp 4 will be described. In this case, the cycle setting switch 11 is pushed on. As a result, when the “L” signal obtained by grounding the Vcc voltage is input to the display drive circuit 24, the operation display unit 23 operates and displays the operation state of cycle setting. Further, when the cycle setting switch 11 is pushed on, one input signal of the NAND gate 13 having the Vcc voltage as one input is "L".
Therefore, the clock signal from the clock generator 14 applied to the other input terminal of the NAND gate 13 is NAN.
It is output to the cycle setting counter 16 through the D gate 13 and counted. At this time, the count value of the cycle setting counter 16 is incremented by being added to the previously set count value. Then, when the count value becomes n + 1, it is reset and counting is performed from the beginning. The count value of the cycle setting counter 16 is sequentially read by the display drive circuit 17,
The light emitting element drive signal of the display level according to the count value is decoded and output to the display device 19 to display the display device 19.
The light-emitting elements constituting the above are turned on and the level of the set cycle is displayed in a bar. Therefore, by providing a periodic scale near the bar display portion, the change period of the illuminance at the time of setting can be known from this periodic scale.

On the other hand, when the count value of the cycle setting counter 16 is input to the input signal variable circuit 21 as the cycle setting information, the input signal variable circuit 21 outputs the illuminance setting input signal S1 from the illuminance setting signal generating circuit 20. Is converted into an operation signal S2 that periodically changes with time based on the cycle setting information and is supplied to the gate control circuit 22. That is, the voltage level of the illuminance setting input signal S1 is set to the cycle setting counter 16
In the first ½ period of the cycle set by, the AC waveform is changed in the increasing direction every half cycle of the AC waveform at the change rate according to the cycle, and in the remaining ½ period, the AC rate is changed at the change rate according to the cycle. By changing in the decreasing direction every half cycle of the waveform, the operation signal S2 that changes in the increasing direction and the decreasing direction according to the set period is generated. This operation signal S2
Is applied to the gate control circuit 22, the gate signal S3 whose gate voltage S3 changes in the advancing direction with the passage of time during each half cycle at the illuminance set value level in the process of increasing the voltage level of the operation signal S2. It is output from the circuit 22. In the process of decreasing the voltage level of the operation signal S2, the gate control circuit 22 outputs the gate signal S3 in which the firing phase in each half cycle at the illuminance set value level changes in the delay direction with the passage of time.

Therefore, when the gate signal S3 output from the gate control circuit 22 is applied between the first anode and the gate of the control pole-equipped bidirectional thyristor 6 via the photocoupler 7, the control pole-equipped bidirectional thyristor 6 is generated. By supplying the ignited and phase-controlled voltage to the illuminating lamp 4, the illuminating lamp 4 is turned on at the illuminance set by the illuminance setting counter 15, and the illuminance is set by the cycle setting counter 16
Is periodically changed in the increasing direction and the decreasing direction with the cycle set by. As a result, a periodic narrowing and expanding motion is caused in the pupil of the illumination light user who is reading a book.

In this embodiment, the illuminance setting switch 10 is operated to operate the illuminance setting counter 15 to set the illuminance of the lamp 4, and the cycle setting switch 11 is operated to set the cycle setting counter. The illuminance change cycle is set by operating 16 and the illuminance setting signal generation circuit 20 is set based on the count value of the illuminance setting counter 15.
By generating the illuminance setting input signal S1 from the illuminance setting input signal S1 and inputting the illuminance setting input signal S1 to the input signal variable circuit 21, the voltage level of the illuminance setting input signal S1 is set to the cycle set by the cycle setting counter 16. In the first 1/2 period, the rate of change according to the cycle changes in an increasing direction every half cycle of the AC waveform, and in the remaining 1/2 period, at the rate of change according to the cycle every half cycle of the AC waveform. The operation signal S2 changing in the decreasing direction is generated by the input signal variable circuit 21,
By applying this operation signal S2 to the gate control circuit 22, the firing phase in each half cycle changes in the advancing direction with the passage of time in the process of increasing the voltage level of the operation signal S2, and the voltage level of the operation signal S2 changes. In the decreasing process, the gate control circuit 22 outputs a gate signal S3 in which the ignition phase in each half cycle changes in the delay direction with the passage of time, and the gate signal S3 is output via the photocoupler 7 to the bidirectional thyristor with a control pole. Since the bidirectional thyristor 6 with the control pole is ignited by adding it to the gate of 6 and the phase-controlled voltage is supplied to the illuminating lamp 4, the illuminating lamp 4 is set to the illuminance set by the illuminance setting counter 15. It can be turned on and its illuminance can be periodically changed in an increasing direction and a decreasing direction at a cycle set by the cycle setting counter 16. As a result, it is possible to give a periodic narrowing motion to the pupils of the illuminating lamp users who read books, etc., to promote the flow of blood in the eyes, and to promote the discharge of aqueous liquid from the eyes to protect the optic nerve. It helps to maintain the health of the eyes. Incidentally, the most preferable change range of the illuminance in this embodiment is ± 7%, and the most preferable change period of the illuminance is 0.6 seconds to 20 minutes. When the change cycle of the illuminance is small, the operation signal S2 for each half cycle of the AC waveform is
When the change cycle of the illuminance is large on the contrary, the operation signal S2 for each half cycle of the AC waveform is increased.
The rate of change of is small.

Further, in the present embodiment, since the count value of the illuminance setting counter 15 and the count value of the cycle setting counter 16 can be displayed on the display unit 19 as a bar, the illuminance setting status and the cycle setting status can be displayed. Can be seen.

The present invention is not limited to the configuration shown in the above embodiment, and various modifications and changes can be made without departing from the scope of the claims.

[0024]

As described above, the present invention provides an illuminating lamp connected to an AC power source through a semiconductor element having a control pole,
An illuminance setting switch for setting the illuminance of the illuminating lamp, a cycle setting switch for setting the cycle of the illuminance change of the illuminating lamp, and an illuminance of the illuminating lamp by counting clock signals by operating the illuminance setting switch. An illuminance setting counter to be set, a cycle setting counter that counts a clock signal by operating the cycle setting switch to set a change cycle of the illumination illuminance, and an illuminance setting counter according to the count value of the illuminance setting counter An illuminance setting signal generating circuit for generating an input signal, and an illuminance setting input signal from the illuminance setting signal generating circuit at a rate of change corresponding to each half cycle of the cycle set in the cycle setting counter. An input signal variable circuit for converting an operation signal changing in an increasing direction and an operation signal changing in a decreasing direction in synchronization with an AC power supply, and the input signal variable circuit. In the process of increasing the operation signal, the firing phase in each half cycle of the AC waveform changes in the advancing direction with the passage of time based on the operation signal, and in the process of decreasing the operation signal, each half cycle of the AC waveform. A gate control circuit for igniting the semiconductor element with a control pole by generating a gate signal whose ignition phase changes in a delay direction with the passage of time and applying the gate signal to the gate of the semiconductor element with a control pole; It is configured to include. Therefore, according to the present invention, it is possible to give a periodic narrowing motion to the pupil of an illumination lamp user who is reading a book, to promote the flow of blood in the eye, and to promote the discharge of aqueous liquid from the eye. This helps protect the optic nerve and also maintains eye health.

Further, according to the present invention, by providing the display means for displaying the illuminance set in the illuminance setting counter and the cycle set in the cycle setting counter, the setting status of the illuminance and the setting status of the cycle are visually recognized. be able to.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an illumination lamp control device according to the present invention.

[Explanation of symbols]

 2 power switch 4 illumination lamp 6 bidirectional thyristor with control pole 7 photocoupler 10 illuminance setting switch 11 cycle setting switch 14 clock generator 15 illuminance setting counter 16 cycle setting counter 19 indicator (display means) 20 illuminance setting signal generating circuit 21 Input signal variable circuit 22 Gate control circuit

Claims (2)

[Claims] 1. An illuminating lamp connected to an AC power source through a semiconductor element having a control pole, an illuminance setting switch for setting the illuminance of the illuminating lamp, and a cycle setting switch for setting a cycle of illuminance change of the illuminating lamp. And an illuminance setting counter that counts a clock signal by operating the illuminance setting switch to set the illuminance of the illuminating lamp, and an illuminance setting counter that operates the period setting switch to count a clock signal and determine the illuminance of the illuminating lamp. A cycle setting counter for setting a change cycle, an illuminance setting signal generating circuit for generating an illuminance setting input signal according to the count value of the illuminance setting counter, and an illuminance setting input signal from the illuminance setting signal generating circuit An operation signal that changes in an increasing direction in synchronization with the AC power supply at a rate of change corresponding to the 1/2 cycle of the cycle set in the cycle setting counter and a decreasing direction In the process of increasing the operating signal based on the operating signal from the input signal variable circuit and the operating signal from the input signal varying circuit, the firing phase in each half cycle of the AC waveform advances with the passage of time. Direction, and in the process of decreasing the operation signal, a gate signal is generated in which the firing phase in each half cycle of the AC waveform changes in the delay direction with the passage of time, and the gate signal is generated, and the gate signal of the semiconductor device with control pole is generated. A control device for an illuminating lamp, comprising: a gate control circuit for igniting the semiconductor element with a control electrode by adding it to a gate. 2. The control device for an illuminating lamp according to claim 1, further comprising display means for displaying the illuminance set in the illuminance setting counter and the cycle set in the cycle setting counter.