JPH10302981A - Wiring structure for luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide wiring structure for a luminaire in which a current detective protection device of non-reset type is not fused by an abnormal current. SOLUTION: In this wiring device, a discharge lamp is lighted by using a current limiting element with a heat sensitive protection device. In this case, a power factor improving capacitor 23 to make a power factor of a current limiting element 9 a high power factor is connected in parallel with a power supply 20 on a power supply side, a closed circuit is formed between the power factor improving capacitor 23 and the power supply 20, and while a current detective protection device 21 of non-reset type and a leader wire connection part 14 of the heat sensitive protection device are connected in series to a power supply line after the closed circuit, the power supply line after that is arranged to be connected to a primary side of the current limiting element 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring structure for lighting equipment used for, for example, street lights.

[0002]

2. Description of the Related Art A wiring structure according to a conventional lighting apparatus shown in FIG. 4 is generally known.

[0003] The wiring structure of this lighting fixture is such that a ballast as a current limiting element is wired to the fixture.
6 is a single choke type. A heat sensing protection device 19 made of a bimetal or the like for detecting abnormal heat generation from the coil portion and interrupting a circuit of the lighting equipment is attached to the coil portion 18 of the ballast.

On the fixture 17 side, a lead wire from the heat sensing and protecting device 19 of the ballast 16 is connected to one side line of the power supply 20, and an abnormal current is detected in series with the heat sensing and protecting device 19, so that the lighting fixture is connected. A non-return type current detection and transfer device 21 including a fuse or the like that cuts off a circuit is provided.

A power factor improving capacitor 23 for increasing the power factor of the ballast 16 is provided after the heat sensing protection device connecting portion 22 and the non-return type current detection protection device 21 as viewed from the power supply 20. The power supply 20 is connected in parallel. After that,
It is connected to the primary side of the ballast 16 as the current limiting element. Note that a film capacitor is generally used as the power factor improving capacitor 23.

As described above, the primary side is wired and the ballast 1
A predetermined lamp is wired on the secondary side of No. 6 to form one wiring structure as a tool.

[0007]

As described above, a film capacitor is used as the power factor improving capacitor 23 used in the conventional lighting apparatus. In actual use, the capacitor 23 is provided between the metal-deposited films inside the capacitor. In some rare cases, a partial short circuit occurs instantaneously and an overcurrent flows due to some influence (healing phenomenon).

However, the above-mentioned healing phenomenon is a content treated as one protection function of the capacitor. In principle, it is not considered to be content that occurs continuously.

However, if the healing phenomenon occurs in the conventional circuit when the device is used in a place where the power source impedance is relatively small, the power source 20 in the closed circuit including the non-returning type current detection and protection device 21 instantaneously. There is a problem that an overcurrent flows, and depending on the timing with the power supply 20, there is a possibility that the non-return type current detection and protection device 21 is blown.

When the connected lamp has a low wattage, the rating of the non-recoverable current detection and protection device 21 is naturally set to a small value. Depending on the timing, there is a problem that the non-return type current detection protection device 21 may be blown.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to provide a wiring structure of a lighting apparatus in which a non-return type current detection and protection device does not melt due to an abnormal current.

[0012]

According to a first aspect of the present invention, there is provided a wiring structure for a lighting apparatus according to the first aspect of the present invention, in which a discharge lamp is turned on using a current limiting element having a heat sensing and protecting device. In the wiring structure of the lighting fixture, a power factor improving capacitor for increasing the power factor of the current limiting element is connected in parallel with the power source on the power source side, and the power factor improving capacitor and the power source are connected between the power factor improving capacitor and the power source. A closed circuit is formed, and a non-recoverable current detection and protection device and a lead wire connecting portion from the heat detection and protection device are connected in series to a power supply line after the closed circuit, and the subsequent power supply line is connected to the current line. It is characterized in that it is connected to the primary side of the limiting element.

According to a second aspect of the present invention, in the wiring structure of the lighting apparatus, a single-choke type ballast is used as a current limiting element.

According to a third aspect of the present invention, there is provided a wiring structure for a lighting apparatus, wherein a leakage transformer type ballast is used as a current limiting element.

In the above configuration, when viewed from the power source on the appliance side, a power factor improving capacitor is arranged in parallel with the power source, and a closed circuit is formed between the two. Then, the connection part of the heat detection protection device and the non-return type current detection protection device are connected in series to the power supply line on the back side of this closed circuit, and the wiring structure is connected to the primary side of the ballast. .

Therefore, even when the power factor improving capacitor causes healing, the abnormal current is not applied to the non-return type current detection and protection device, so that the current detection and protection device is blown. Disappears. Also, power supply 0N,
The same can be said for the inrush current application at the time of OFF.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIG. Note that the same components as in the prior art will be described with the same reference numerals.

FIG. 1 shows an example using a current limiting element for lighting a discharge lamp (lamp) such as a fluorescent lamp or a mercury lamp.
A heat sensing protection device 10 for detecting abnormal heat generation and shutting off a circuit is attached to a heat generating portion inside the current limiting element 9, and a lead wire thereof is configured to be connectable to another circuit. When viewed from the power supply 20 on the appliance 17 side,
First, a power factor improving capacitor 23 for increasing the power factor of the current limiting element 9 is arranged in parallel with the power source 20, and a closed circuit is formed between the two as shown by the arrows.

A non-return type current detection and protection device 21 for detecting an abnormal current and interrupting the circuit of the lighting equipment is connected in series to the power supply line on one side behind the closed circuit. To the primary side of the current limiting element 9. Wire the primary side as above. A predetermined lamp is wired on the secondary side of the current limiting element 9 to constitute one wiring structure as an instrument.

Next, a second embodiment of the present invention will be described with reference to FIG. Note that the same components as in the prior art will be described with the same reference numerals.

FIG. 2 shows a circuit structure when a single choke type ballast 16 as a current limiting element is wired to a device 17. The coil portion 18 of the ballast 16 has a coil portion 18.
-Sensing protection device 19 that detects abnormal heat generation and shuts off the circuit.
Is installed.

On the appliance 17 side, when viewed from the power supply 20 side, first, a power factor improving capacitor 23 for increasing the power factor of the ballast is arranged in parallel with the power supply 20. As shown in FIG.

A connection 22 of the heat sensing and protection device and a non-return type current detection and protection device 21 for detecting an abnormal current and shutting off the circuit are connected in series to one side of the power supply line behind the closed circuit. , And the primary side of the ballast 16. As described above, the primary side is wired, the predetermined lamp is wired to the secondary side of the ballast, and one wiring structure is configured as an instrument.

The third embodiment of the present invention will be described with reference to FIG. Note that the same components as in the prior art will be described with the same reference numerals.

FIG. 3 shows an example in which a leakage transformer type ballast is used as a current limiting element. In the coil portion 6 of this ballast 5, heat sensing for detecting abnormal heat generation of the coil portion 6 and shutting off the circuit. A protection device 19 is mounted.

On the appliance 17 side, when viewed from the power supply 20 side, first, a power factor improving capacitor 23 for increasing the power factor of the ballast is arranged in parallel with the power supply 20, and an arrow is provided between the two. As shown in FIG.

A connection 22 of the heat sensing and protection device and a non-return type current detection and protection device 21 for detecting an abnormal current and shutting off the circuit are connected in series to one side of the power supply line behind the closed circuit. , And the primary side of the ballast 5. As described above, the primary side is wired, the predetermined lamp is wired to the secondary side of the ballast, and one wiring structure is configured as an instrument.

Next, the operation of the above embodiment will be described.

When viewed from the power source on the appliance side, a power factor improving capacitor is arranged in parallel with the power source, and a closed circuit is formed between the two. Then, a connection portion of the heat sensing and protection device and a non-return type current detection and protection device are connected in series to one side of the power supply line on the back side of the closed circuit, and the wiring structure is such that it is connected to the primary side of the ballast.

Therefore, even when the power factor improving capacitor causes healing, the abnormal current is not applied to the non-return type current detection and protection device, so that the current detection and protection device is blown. Disappears. Also, power supply 0N,
The same can be said for the inrush current application at the time of OFF.

[0031]

As described above in detail, according to the present invention, a power factor improving capacitor is arranged in parallel with a power supply, and a closed circuit is formed between the two. Since the connection part of the heat sensing protection device and the non-recoverable current detection protection device are connected in series to the power supply line behind this closed circuit and connected to the primary side of the ballast, the power factor Even when the improvement capacitor causes healing or when an inrush current is applied when the power supply is 0N and OFF, the abnormal current generated by the power factor improvement capacitor may be applied to the non-recoverable current detection and protection device. Therefore, the current detection and protection device does not blow.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing a circuit configuration as a wiring structure of a lighting fixture according to a first embodiment of the present invention.

FIG. 2 is a circuit diagram showing a circuit configuration as a wiring structure of a lighting fixture according to a second embodiment of the present invention.

FIG. 3 is a circuit diagram showing a circuit configuration as a wiring structure of a lighting fixture according to a third embodiment of the present invention.

FIG. 4 is a circuit diagram showing a circuit configuration as a wiring structure of a lighting device according to the related art.

[Explanation of symbols]

5 ... Leakage transformer type ballast as current limiting element, 9 ... Current limiting element, 10 ... Heat sensing protection device, 14 ... Connection part, 16 ... Single choke type ballast as current limiting element, 19 ... Heat sensing protection device Reference numeral, 20: power supply, 21: non-recoverable current detection and protection device, 22: connection part, 23: power factor improving capacitor

Claims (3)

[Claims] 1. A wiring structure of a lighting fixture for lighting a discharge lamp using a current limiting element having a heat sensing protection device, wherein a power factor of the current limiting element is increased in parallel with a power source on a power source side. A power-factor improvement capacitor is connected to form a closed circuit between the power-factor improvement capacitor and the power supply. A wiring structure for a lighting fixture, wherein a lead wire connecting portion from a protection device is connected in series, and a subsequent power supply line is connected to the primary side of the current limiting element. 2. The luminaire according to claim 1, wherein a single choke type ballast is used as the current limiting element. 3. The lighting apparatus according to claim 1, wherein a leakage transformer type ballast is used as the current limiting element.