JP2003338388A - Wiring fixture for lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To additionally execute soft-start function even for a lighting fixture without soft-start function, and to also use an electric bulb fluorescent lamp. <P>SOLUTION: A switch SW1 for selecting whether to execute soft-start function or not is provided with a body part 40 of the wiring fixture constituted such that the lighting fixture is electrically connected with an alternating current power source by connecting a hook ceiling cap 20 with a hook ceiling 10. When the switch SW1 is turned to 'electric bulb 90 V', 'electric bulb 100 V', timing of a gate signal supplied to an triac element included in a dimmer circuit contained in the body 40 is controlled and soft-start is executed. When the switch SW1 is turned to 'compact fluorescent lamp', soft-start is not executed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring device configured to electrically connect a hook ceiling and a lighting device.

[0002]

2. Description of the Related Art Conventionally, in lighting equipment, for example, a hook ceiling cap is electrically connected to a hook ceiling provided on a ceiling, and the light fixture is installed via a cord suspended from the hook ceiling cap. is doing.

[Problems to be Solved by the Invention]

Further, there is known a lighting device equipped with a soft start circuit in which the voltage applied to an incandescent lamp or the like is gradually increased so that the incandescent lamp or the like gradually becomes brighter.
A typical soft start circuit is equipped with a semiconductor circuit composed of a thyristor, triac, etc. By controlling the generation timing of the gate signal to the thyristor or triac, the duty ratio can be increased stepwise. We are doing a soft start.

However, since the soft start circuit is currently built in the luminaire itself, a user who has a luminaire that does not have the soft start function will have to use the soft start function unless the luminaire itself is replaced. It was not possible to use it.

Further, in recent years, a compact fluorescent lamp in which a fluorescent tube is bent and enclosed in a glass bulb has become widespread. This incandescent fluorescent lamp can be used in the same manner as an incandescent lamp by mounting it in a socket for an incandescent lamp like a normal incandescent lamp.

[0006] This bulb-type fluorescent lamp is a bulb itself, but since the lighting mechanism is similar to that of a normal fluorescent lamp, it is not possible to perform a soft start like a normal bulb. Therefore, the light bulb type fluorescent lamp cannot be used in a lighting fixture which has a soft start circuit and cannot selectively release its function. The present invention has been made in view of the above problems, and it is possible to additionally execute the soft start function even in a lighting device that does not have the soft start function. The purpose is to make it available.

[0007]

In order to achieve the above object, a lighting fixture wiring device according to the present invention is a lighting fixture wiring device configured to electrically connect a hook ceiling and a lighting device. A dimming circuit for dimming the lighting device by changing the effective value of the AC power supply voltage supplied to the lighting device by changing the duty ratio,
A switch circuit that switches between a first mode in which the duty ratio gradually approaches a constant value after the power is turned on and a second mode in which the duty ratio is constant after the power is turned on; And a control circuit that switches a signal for controlling the duty ratio based on a state of the switch circuit.

According to the present invention, the first switch circuit is used.
The mode and the second mode are switched. A signal for controlling the duty ratio output from the control circuit is switched depending on the state of the switch circuit, whereby the duty ratio in the dimming circuit gradually approaches a constant value as time elapses after the power is turned on. Mode and the second mode in which the duty ratio is constant after the power is turned on. As a result, it is possible to arbitrarily select whether or not to perform the soft start for all the lighting equipment.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a structure of a wiring fixture of a lighting fixture according to an embodiment of the present invention.
This wiring device is provided with a hook sealing cap 20 that is electrically connected to a hook ceiling 10 mounted on a ceiling.
A cord 30 for connecting the hooking sealing cap 20 and the main body 40, a main body 40 that stores a dimming circuit 300, a control circuit 400, and the like, which will be described later, and is fixed to the ceiling with a screw, an incandescent lamp, The wiring section 50 for mounting an illuminating lamp such as a compact fluorescent lamp.

A switch SW1 is provided on the side surface of the main body portion 40 to switch the method of supplying voltage to the illumination lamp attached to the wiring portion 50. This switch SW
Reference numeral 1 is a part of a switch circuit 500 described later. For example, as shown in an enlarged view in FIG.
It is arranged to select three of "00V" and "light bulb 90V". "Bulb 100V" and "Bulb 90V" are both selected when performing a soft start.
In the latter case, the voltage applied to the luminaire during normal operation is 90
It is the energy saving mode which is regarded as%. In a portion where frequent maintenance is difficult, such as a blow-through illumination, it is possible to extend the life of the illumination lamp by selecting the latter mode.

Further, the main body 40 has a dharma hole 40H for fixing the main body 40 to the ceiling by passing through the head of a screw protruding from a mounting tool (not shown) attached to the ceiling. It is provided.

Next, the dimming circuit 3 stored in the main body 40
00, control circuit 400 and the like will be described with reference to FIG. In FIG. 2, 100 is an AC power supply, which is supplied from the hook ceiling 10 in FIG. Also, 2
Reference numeral 00 denotes an illuminating lamp such as an incandescent lamp, which is mounted on the wiring section 50 in FIG.

As shown in FIG. 2, a surge absorbing circuit 101 for absorbing a surge current from the AC power supply 100, a dimming circuit 300, and a control circuit 400 are provided in the main body 40.
And a switch circuit 500 are stored. The dimming circuit 300 is electrically connected between the AC power supply 100 and the illuminating lamp 200, and is for changing the effective value of the AC voltage supplied to the illuminating lamp 200. That is, the dimming circuit 300 includes the triac Q1 and the choke coil L1.
It has a series circuit with. C3 is a capacitor for noise reduction. The effective value of the AC voltage supplied to the illumination lamp 200 can be switched by the timing of generation of the gate signal to the triac Q1. As will be described later, by changing the generation timing of the gate signal and gradually increasing the ON period,
The duty ratio can be increased stepwise and the soft start can be executed.

A photocoupler Q2 is connected to the gate of the triac Q1. In addition, in FIG.
R4 and R5 are resistors for adjusting the current flowing to the photocoupler Q2. When a dimming signal TG from the control circuit 400 described later is input, a current flows through the photocoupler Q2. As a result, the triac Q1 becomes conductive, and the incandescent lamp 100 is lit only during that time. The control circuit 400
A zero-cross detection circuit of the AC power supply 100 (not shown) is connected to the. The dimming signal TG is output with reference to the detected zero-cross point.

The control circuit 400 controls the dimming signal TG output to the photocoupler Q2 based on the switching signal from the switching circuit 500. This control method will be described with reference to the waveform of the voltage applied to the incandescent lamp 100 shown in FIG. When the switch SW1 is set to "light bulb 90V", FIG.
As shown in (a), the length of the ON period is gradually increased, and the dimming signal TG is controlled so that the duty ratio finally becomes 90%. In addition, the switch SW1 is set to “light bulb 1
When it is "00V", as shown in FIG. 3B, the length of the ON period is gradually increased, and the dimming signal TG is controlled so that the duty ratio finally becomes 100%. To do. Further, when the switch SW1 is the “bulb-shaped fluorescent lamp”, the soft start is not performed as shown in FIG.

Further, the check circuit 600 includes an AC power source 1
The actual voltage output from 00 and the rated voltage (100
It is to check the deviation from V). For example, when the power supply voltage has dropped to 98V, the dimming signal TG is generated in consideration of the difference of 2V from the rating, and the brightness of the incandescent lamp 100 is the same as when 100V is output accurately. To ensure.

[0017]

As described above, according to the lighting device wiring device of the present invention, the soft start function can be additionally executed even in a lighting device that does not have the soft start function. Further, a compact fluorescent lamp can also be used.

[Brief description of drawings]

FIG. 1 shows an external view of a lighting fixture wiring device according to an embodiment of the present invention.

FIG. 2 is a dimming circuit 30 stored in a main body 40 of FIG.
A configuration such as 0 is shown.

FIG. 3 is a waveform diagram showing an operation when the switch SW1 is switched.

[Explanation of symbols]

10 ... Hooking ceiling, 20 ... Hooking sealing cap, 30 ... Cord, 40 ... Main body part, 50 ...
Wiring part, SW1 ... Switch, 100 ... AC power supply,
200 ... Illumination lamp, 300 ... Dimming circuit, 400 ...
・ Control circuit, 500 ... Switch circuit, 600 ... Check circuit

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Claims (2)

[Claims] 1. A wiring fixture for a lighting fixture configured to electrically connect a hook ceiling and a lighting fixture, wherein an effective value of an AC power supply voltage supplied to the lighting fixture is changed by changing a duty ratio. A dimming circuit for changing the dimming of the luminaire, a first mode for gradually bringing the duty ratio closer to a constant value with the passage of time after the power is turned on, and the duty ratio when the power is turned on To a constant second mode, and a control circuit that switches a signal for controlling the duty ratio based on the state of the switch circuit. 2. The wiring fixture for a lighting fixture according to claim 1, wherein the switch circuit is configured to select the constant value in the first mode.