JPS63271895A - Dimmer device for lighting apparatus - Google Patents

Abstract

PURPOSE:To enable a dimmer operation using only a power source switch by changing brightness of a lighting apparatus and setting a lighting time with a short time off operation of the switch detected when the switch is turned on. CONSTITUTION:A power source supply circuit 52, pulse generation circuit 53, and dimmer control circuit 54 are provided in an upper part housing 11 of a lighting apparatus 10. An AC power source is made a full-wave rectification in the circuit 52, and is supplied to a computor 55 via a resistance R7, Zener ZD, and diode D3. The circuit 53 is composed of resistances R8 and R9, and gives an on/off signal S2 of the power source to the computor 55. A thyristor 56, buzzer 58, resistance, and condencer are equipped with the circuit 54 and the computor 55 as central parts. This constitution enables brightness of a lighting apparatus and a lighting time to be set by only a short time off operation of a power source switch 14.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a light control device for a lighting fixture that allows the brightness of the lighting fixture to be adjusted by operating a power switch.

(Prior Art) Conventional lighting equipment is, for example, attached to a rosette provided on an indoor ceiling, and turned on and off by operating a power switch provided on an indoor wall.

In addition, conventional lighting equipment is equipped with multiple fluorescent tubes, and when the above power switch is turned on, each time the string of the pull switch provided on the lighting equipment is pulled, for example, 2 lights are turned on → 1 light is turned on. There are some that switch on in the order of lighting -> light bulb -> off, and some that change the brightness by switching the lighting tube, such as jump rear type lighting equipment.

Furthermore, conventionally, some devices have a built-in light control device in the power switch portion.

(Problems to be Solved by the Invention) However, in the above conventional example, in order to incorporate the light control device into the power switch part provided on the wall,
The light control device had to be installed by a person with construction qualifications, which required a lot of time and labor.

Also, when lighting equipment with a pull switch is turned off, it is difficult to tell whether the power switch is off or the pull switch is off, and you have to operate both switches to confirm. It was rather inconvenient.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides lighting equipment that connects to a power switch that is installed on the wall of a house to turn on and off the power supply, or a lighting device that is installed at the location where the lighting equipment is installed. In a dimmer device for a lighting device that is activated when the power switch is turned on and dims the lighting device, when the power switch is in the on state, the power switch is turned off for a short time. a short-time off detection means for detecting such an operation when the power switch is turned off; a lighting state control means for controlling the lighting state such as settings; and a power supply supplying power to the short-time off detection means and the lighting state control means for a while when the power switch is turned off from on. It is characterized by comprising means.

(Function) With the above configuration, the present invention enables dimming of the lighting equipment without any work on the power switch part, and 7.
Since the dimming operation can be performed by operating the power switch, it is not necessary to operate the pull switch, and the dimming operation becomes easy.

In addition, the present invention can include not only dimming operation but also other functions related to the lighting state, and these functions can also be selected by operating the power switch.

(Embodiment) FIG. 1 is a circuit diagram showing the electrical configuration of a first embodiment of the present invention.

The light control device shown in FIG. 1 is installed, for example, in an upper housing 11 of a lighting fixture 10, as shown in FIG. 2, which is attached to a rosette 12 of an indoor ceiling 20 and includes an incandescent lamp 9.

The rosette 12 is connected to an indoor power distribution line 13 and communicates with a power switch 14 provided on a wall 21. Further, the plug 50 of the light control device is connected to the rosette 12. Note that if a hanging outlet is attached to the rosette 12, the plug 50 is connected to this hanging outlet.

The power supply path 52 supplies a current (as shown in FIG. 5(b)) after full-wave rectification of an AC power source (shown in FIG.
(shown in FIG. 5(C)) is inputted through a resistor R7, sliced by a Zener diode ZD (shown in FIG. . Further, this power supply circuit 52 accumulates charge in the electrolytic capacitor C4,
When the current from the plug 50 is turned off, for a while (
For example, the microcomputer 5
It has the function of supplying driving power to the drive circuit 5.

The pulse generating circuit 53 is composed of resistors R8 and R9, and receives a power on/off signal S2 inputted through the plug 50.
is given to the microcomputer 55.

The dimming control circuit 54 is mainly composed of a microcomputer 55, and also includes a thyristor 56 and a buzzer 5.
8. Equipped with resistors and capacitors.

The thyristor 56 switches the current supplied to the incandescent lamp 9, and is controlled on and off by a control signal S3 output from the microcomputer 55.

Note that other semiconductor switching elements such as a TRIAC or a transistor may be used instead of the SIRISK 56.

FIG. 3 is a flowchart showing the details of the dimming process executed by the microcomputer 55. When the power switch 14 connected to the rosette 12 is turned on,
It starts when power is supplied to the microcomputer 55.

Step 60 is a process in which the buzzer 58 sounds twice to notify that the power switch has been turned on.

Step 61 resets a flag ST indicating the brightness level of the incandescent lamp 57 (hereinafter referred to as a dimming level flag).

In step 62, a process of inserting the full-width value C into the control angle value B is performed.

The full-width value C is a value corresponding to a half cycle (=π) of the input power supply, and is stored in advance in the memory as a value obtained by dividing the half cycle of the input power supply by the execution cycle time of the dimming process.

The reason why the half-cycle of the input power source is used as a reference is because the current supplied to the incandescent lamp 57 is full-wave rectified, and since this current is phase-controlled, the full width is a half-cycle of the input power source. be.

Step 63 is a process of decreasing the control angle value B by 1.

Step 64 is a process for generating the control signal S3 for the thyristor 56, and is a subroutine. The contents of this control signal subroutine are shown in a flowchart in FIG.

When this control signal subroutine starts, step 81
Then, the output of the Il control signal S3 is set to a low level (hereinafter referred to as "L"). Therefore, the thyristor 56 is turned off, and the current flowing to the incandescent lamp is cut off.

Step 82 is a process of detecting the zero-crossing point of the current supplied from the power supply circuit 53.

A signal S2 having a waveform shown in FIG. 5(C) is input from the pulse generating circuit 53 to the microcomputer 55, and this signal is synchronized with the current flowing through the incandescent lamp.

Therefore, in step 82, the zero-crossing point of the current flowing through the incandescent lamp 9 is detected by detecting the zero-crossing point of the signal S2.

When the zero-crossing point is detected in step 82, next, in step 83, the control angle value B is entered into the soft counter A for counting the switching time of the control signal S3.

Then, in step 78, the processes of steps 84 to 88 are repeatedly executed until the next zero crossing point is detected.

Step 84 is a process of decrementing the value of the soft counter A by 1. In step 85, it is determined whether the value of the soft counter A after this decrease is greater than O.

If A>O in step 85, the control signal S3 is set to L in step 86, and if A<0, the control signal S3 is set to high level (hereinafter referred to as H).

For example, if C/3 is included in the control angle value B, then Fig. 5 (
As shown in d), A>0 until reaching 1/3 period (up to π/3 if 1 period is π) of the input signal S2 of the microcomputer 55 shown in FIG. Therefore, the control signal S3 is set, and after that, since A<O, the control signal S3 is
becomes H.

Therefore, the current supplied to the incandescent lamp 9 is a current with a control angle of π/3, as shown in FIG.

Returning to FIG. 3, each time the control signal processing in step 64 is executed, the wait processing in step 65, the processing in steps 66, and 63 are executed, and the control angle value B is gradually decreased. Control signal processing in step 64 is performed using the decreasing control angle value B.

Therefore, since the control angle of the current supplied to the incandescent lamp 9 gradually increases from 0, the ON time within one cycle gradually increases.

FIG. 6 is a time chart for explaining the operation of this embodiment, in which (a) shows the on/off state of the power switch, and (b) shows the brightness of the incandescent lamp 9. . This brightness is 100% when the control angle is π,
0% is when the incandescent lights are turned off.

(C) of the same figure shows the on/off state of the buzzer 58 in FIG.

From the time t1 when the power switch is turned on, the above step 6
Processes 0 to 66 are executed, and the brightness of the incandescent lamp 9 gradually increases. This is a so-called soft start operation, and its purpose is to extend the life of the incandescent lamp 9.

The wait process in step 65 is for slowing down the rate of increase in the brightness of the incandescent lamp 9 in the soft start operation.

After the control angle value B becomes 0, the process in step 67 is executed until it is determined in step 68 that the power switch has been turned off for a short time.

The process of step 67 is the control signal process shown in FIG. 4, and since the value of the control angle value B is fixed to O,
The control angle of the current flowing through the incandescent lamp 9 is π, and lighting is maintained at 100% brightness.

Step 68 samples the on/off state of the input signal S2 in synchronization with the clock signal, and
When the power switch is turned off for a certain period of time (for example, about 0.3 seconds) and then turned on again, it is determined that the power switch has been turned off for a short period of time.

If the above power switch is turned off for a short time,
Although the input power from the plug 50 is turned off, the operation of the microcomputer 55 continues for a while due to the discharge of the charge stored in the electrolytic capacitor C4 of the power supply circuit 52. This prevents the microcomputer 55 from stopping or malfunctioning during the short-time off operation.

When the incandescent lamp 9 is 100% lit and the power switch is turned off for a short time, at this point (t in Fig. 6).
In step 2), the determination in step 68 is YES, and step 6
After the buzzer 58 sounds twice in step 9, the dimming stage flag ST is increased by one in step 70.

In this case, the dimming stage flag 5T=1, and after entering C/4 into the control angle value B in step 72, the process in step 67 is repeated again.

By fixing the control angle value B to C/4 and repeating step 72, the control angle becomes π/4 and the brightness of the incandescent lamp is reduced to 75%.

If the power switch is turned off for a short time in this state, the buzzer 58 will sound twice at this point (t3 in FIG. 6) and the dimming stage flag 5T will be set to 2, so step 74 will be performed. , C/2 is entered into the control angle value B.

As a result, step 67 is repeated with the control angle value B=C/2 fixed, the control angle becomes π/2, and the incandescent lamp 9
The brightness of will be reduced by 50%.

If you turn off the power switch for a short time in this state,
At this time point t4, the buzzer 58 sounds twice, this time the dimming stage flag 5T becomes 3, and in step 76 the control angle value B is set to 3.
C/4 can be inserted.

As a result, step 67 is repeated with the control angle value B = 3C/4 fixed, the control angle becomes 3π/4, and the brightness of the incandescent lamp 9 decreases to 25%.

Furthermore, if the power switch is turned off for a short time in this state, the buzzer 58 will sound twice and the dimming stage flag 5T will become 4, and in step 77 the control angle value B will change to C. At the same time, the dimming stage flag ST is reset in step 78.

As a result, step 67 is repeated with the control angle value B=0 being fixed, so that the incandescent lamp 9 is lit again at 100% brightness.

Thereafter, each time the power switch is turned off for a short time, the sequence of 75% lighting → 50% lighting → 25% lighting → 100% lighting will be repeated.

Therefore, by operating the power switch, one of the four brightness levels can be freely selected.

To turn off the light, turn off the power switch. At this point (t5 in FIG. 6), the incandescent lamp 57 is turned off and the operation of the microcomputer 55 is also stopped.

Note that by changing the program of the microcomputer 55, various controls regarding the lighting state of the incandescent lamp 9 can be performed, and by providing a soft timer in the microcomputer 55, a timer function for lighting the lamp for a certain period of time can be added. It is also possible.

Next, FIG. 7 is a circuit diagram showing the electrical configuration of a second embodiment of the present invention.

When the power supplied through the plug 4 is turned off, the power supply circuit 1 discharges the electric charge stored in the electrolytic capacitor C1 and supplies it to the counter 5 and decoder 6 in the dimming control circuit 3 for a while. The power is supplied for a period of time (for example, about 0.3 seconds).

Electrolytic capacitor C1 is charged by resistor R1 and diode D.
1.

The pulse generating circuit 2 consists of a smoothing circuit composed of a resistor R2 and a resistor R3, and when power is supplied, a diode D is connected.
2, the half-wave rectified current is smoothed, and the input signal s1 of the counter 5 becomes H.

Furthermore, when the power is turned off, the charge in the capacitor C2 is quickly discharged by the resistor R3, and the input signal S
Set 1 to L.

The dimming 11 control circuit 3 includes a counter 5, a decoder 6, and a resistor R.
4 to R6, relays X1 to X3, a diac 7, and a thyristor 8.

Counter 5 counts up by L pulse input.
This is a ring counter that counts up by 1 every time the input signal S1 forms one pulse.

The decoder 6 outputs 3 in response to the count value of the counter 5.
Make any one of the output terminals conductive, and relays
3 is activated.

Resistors R1 to R3 have different resistance values, and capacitor C
3 and the diac 7 constitute a trigger circuit for the thyristor 8.

Therefore, the phase of the thyristor 8 is controlled by the control angle determined by the time constant of the resistor connected to the relay selected by the decoder 6 and the capacitor C3, and the brightness of the incandescent lamp 57 is changed.

Like the first embodiment, this embodiment is also installed inside a lighting fixture that is installed through a rosette provided on a power distribution line as shown in FIG.
7.

The plug 4 is connected to the rosette or a hanging outlet attached to the rosette to receive electric power.

Next, the operation of this embodiment will be explained.

When the power switch 14 shown in FIG. 2 is in the OFF state, no power is supplied to the lighting fixture 10, so the incandescent lamp 57 is off and the light control device is not operating.

When the power switch 14 is turned on from this state, power is supplied to the counter 5 and the decoder 6 via the power supply circuit 1, and these are activated. Further, the input signal S1 of the counter 5 becomes H.

The initial value of the counter 5 is 1, and the decoder 6 makes the output terminal connected to the relay X1 conductive.

As a result, the current of the incandescent lamp 57 is phase-controlled at a control angle (for example, 5 degrees) determined by the resistor R4 and the capacitor C3,
Lights up at a brightness close to that when the control angle is 0 degrees.

In this state, the power switch 14 is turned on for a short time (for example, 0
．． If the switch is turned off for about 3 seconds, the counter 5 counts up by 1 and becomes 2, as described above. Thereby, the decoder 6 makes the output terminal connected to the relay X2 conductive.

Therefore, the phase of the current of the incandescent lamp 57 is controlled by the control angle (for example, π/2) determined by the resistor R5 and the capacitor c3, and the brightness is halved.

Furthermore, in this state, if the power switch 14 is turned off again for a short time, the counter 5 counts up by 1 and becomes 3. Thereby, decoder 6 makes the output terminal connected to relay X3 conductive.

Therefore, the current of the incandescent lamp 57 is phase-controlled by the control angle (for example, π/4) determined by the resistor R6 and the capacitor C3,
The brightness is further halved.

From this state, if the power switch 14 is turned off again for a short time, the value of the counter 5 returns to 1, the relay X1 is activated again, and the brightness of the incandescent lamp 57 is increased.

Thereafter, each time the power switch 14 is turned off for a short time, the three levels of brightness are sequentially switched.

If the power switch 14 is turned off to turn off the light, no current is supplied to the incandescent lamp 57 and the light is turned off.

Each time the power switch 14 is turned off for a short period of time, the power supply is turned on and off momentarily, but the driving power for the counter 5 and the decoder 6 is supplied by discharging the electric charge of the electrolytic capacitor C1 of the power supply circuit 1. Therefore, the dimming operation does not stop and malfunctions do not occur.

In this way, in this embodiment, the brightness of the incandescent lighting device can be changed by operating the power switch 14.

Next, a third embodiment of the present invention will be described.

In this embodiment, the present invention is applied to a fluorescent tube type lighting fixture, and the configuration of the light control device is A of the light control device in FIG.
The configuration is such that the portion subsequent to point B is replaced with the circuit shown in FIG.

The first fluorescent tube 31 is connected to a contact point of relay X1, and the second fluorescent tube 32 is connected to a contact point of relays X1 and X2. Further, a contact point of the relay X3 is connected to the miniature bulb 33.

In addition, 34.35 in the figure is a ballast, and 36.37 is a glow lamp.

When the power switch 14 is in the OFF state, the first and second fluorescent tubes 31 and 32 and the miniature bulb 33 are all turned off.

If the power switch 14 is turned on from this state, the value of the counter 5 becomes 1, and the relay X1 is activated. At this time, both the first and second fluorescent tubes 31 and 32 are lit.

From this state, when the power switch 14 is turned off for a short time, the relay X2 is activated, and the second fluorescent tube 32 is activated.
The brightness will be halved.

In this state, if the power switch 14 is turned off again for a short time, the relay X3 is activated and the miniature bulb 33 is turned on.

Thereafter, the above three states can be sequentially switched each time the power switch 14 is turned off for a short time.

If the power switch 14 is turned off, the first. The second fluorescent tubes 31, 32 and the miniature bulbs 33 are all turned off.

In this way, in this embodiment, by operating the power switch 14, the lighting tube of the fluorescent tube type lighting equipment can be switched.
It is possible to replace the conventional switching operation with a pull switch.

Next, a fourth embodiment of the present invention will be described.The second embodiment is equipped with a timer function that can keep a fluorescent tube lit for a predetermined period of time.
A of the light control device in FIG.

The configuration is such that the subsequent stage from point B is replaced with the circuit shown in FIG.

Timer relay T1 has a contact that is turned on for a short time (for example, 30 seconds) when energized and turned off after the timer time has elapsed, and this timer relay T1 is connected to relay X2. There is.

The timer relay T2 has a contact that is turned on for a long time (for example, 30 minutes) when the current is energized and turned off after the timer time elapses, and is connected to the relay x3.

Then, one fluorescent tube 31, a miniature bulb 33, and a buzzer 3
8 is provided.

When the power switch 14 is in the off state, the fluorescent tube 31
The light bulb 33 is in an off state.

When the power switch 14 is turned on from this state, relay
1 is activated, and only the fluorescent tube 31 is energized and lit.

In this state, when the power switch 14 is turned off for a short time, the relay X2 is activated, and the timer relay T1 is energized. As a result, the fluorescent tube 31 and the buzzer 38
Then, the light is energized for a short time, and the light is turned off after the timer period has elapsed.

This timer operation is used when turning off the lights to go outside.
This is a convenient function when there is a distance from the power switch 14 to the exit, or when leaving with luggage after operating the power switch 14.

The buzzer 38 is for notifying that the short timer is in operation.

The other timer relay T2 is activated by turning off the power switch 14 twice in succession from the operating state of the relay X1, thereby activating the relay X3.

When the timer relay T2 is activated, the fluorescent tube 31 and the miniature bulb 33 are turned on during the timer period, and both are turned off after the timer period has elapsed.

The light bulb 33 is turned on to indicate that the long time timer is in operation.

In this way, in this embodiment, by operating the power switch 14, in addition to turning on and off the lighting equipment, it is possible to select a timer operation for turning on the lighting for a predetermined period of time.

In the second to fourth embodiments described above, the number of outputs of the counter 5 and the decoder 6 shown in FIG.
By changing the number of X3, it is possible to increase or decrease the number of dimming stages, the number of lighting tubes, the number of timer relays, etc., and it can also be applied to jump rear type lighting equipment.

Moreover, the relays X1 to X3 can also be replaced with semiconductor switches.

Furthermore, the present invention may be installed outside the lighting equipment in addition to being installed inside the lighting equipment as in each of the above embodiments.
A connection adapter may be interposed between the plug portion of the lighting fixture and the rosette; in the latter case, it can be sold separately as a separate product from the lighting fixture.

Further, the present invention can be provided inside or outside of a lighting fixture that is attached to a wall or the like without using a rosette.

(Effects of the Invention) As explained in detail above, the present invention enables dimming of lighting equipment without any work on the power switch part, and furthermore, the dimming operation can be performed by operating the power switch. This eliminates the need to operate a pull switch and facilitates dimming operation.

In addition, the present invention can include not only dimming operation but also other functions related to the lighting state, and these functions can also be selected by operating the power switch.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing the electrical components of the first embodiment of the present invention, FIG. 2 is a wiring diagram showing the lighting equipment to which the embodiment is applied and the status of its power distribution line, and FIGS. Fig. 4 is a flowchart showing the contents of the processing executed by the microcomputer in Fig. 1, Fig. 5 is a time chart for explaining the phase control operation in the same embodiment, and Fig. 6 is a dimming diagram in the same embodiment. Time chart to explain the operation,
FIG. 7 is a circuit diagram showing a part of the electrical configuration of the second embodiment of the present invention, FIG. 8 is a circuit diagram showing a part of the electrical configuration of the third embodiment of the invention, and FIG. 9 is a circuit diagram showing a part of the electrical configuration of the third embodiment of the present invention. FIG. 4 is a circuit diagram showing the electrical configuration of a fourth embodiment of the present invention. 1.52...- Power supply circuit 2.53... Pulse generation circuit 3.54-... Dimming control circuit 9.57... Incandescent lamp 10- ......Lighting equipment 12...Rosette 13-...Distribution line 14...Power switch 20...Ceiling 21...
...Wall 31.32--Fluorescent tube 33...Miniature bulb Applicant Iwashima Electronics Co., Ltd. Kayano Kogyo Co., Ltd. Agent Hidehiko Okada (2 others) Figure 2 Figure 4

Claims (3)

[Claims] (1) A lighting fixture connected to a power switch installed on the wall of a house to turn the power on and off, or installed at its mounting location, activated when the power switch is turned on, and dims the lighting equipment. In a light control device for a lighting equipment, the short-time off detection means detects a short-time off operation of the power switch when the power switch is in the on state; a lighting state control means for controlling the lighting state of the lighting device, such as switching the brightness or setting the lighting time, in response to the detection of the off operation of the lighting device; 1. A light control device for a lighting equipment, comprising power supply means for supplying power to the short-time off detection means and the lighting state control means for a while when the lighting equipment is turned off. (2) The lighting fixture is an incandescent lighting fixture, and the lighting state control means switches the control angle of the current supplied to the incandescent lamp each time the power switch is turned off for a short time. 2. The light control device for a lighting fixture according to claim 1, wherein the light control device performs phase control using a light control method. (3) The lighting fixture is a fluorescent lighting fixture, and the lighting state control means switches the tube to be lit each time the power switch is turned off for a short time. The light control device for the lighting equipment according to item 1.