JP2013120669A - Electromagnetic induction discharge lamp system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for impedance matching, and to minimize decrease in transmission efficiency of high frequency AC power even if the distance from an electromagnetic induction discharge lamp to a stabilizer will be more than 1 m.SOLUTION: An electromagnetic induction discharge lamp system 1 includes a stabilizer 12 generating a high frequency AC power from 100 kHz to 1 MHz based on a power from an AC power supply 11, an electromagnetic induction discharge lamp 14 which is lighted with the high frequency AC power, and a shield wire 13 which is shielded on both the positive electrode side and the negative electrode side and also grounded, and transmits the high frequency AC power generated from the stabilizer 12 to the electromagnetic induction discharge lamp 14.

Description

  The present invention relates to an electromagnetic induction discharge lamp system.

  2. Description of the Related Art Conventionally, an electrodeless discharge lamp device has been disclosed that facilitates mounting of a lighting circuit unit and a lamp unit and routing of wiring and is excellent in assemblability (see Patent Document 1).

  The electrodeless discharge lamp device of Patent Document 1 includes a lighting circuit unit (inverter) and a lamp unit that is an electrodeless discharge lamp. The high frequency power supply circuit in the lighting circuit unit outputs a high frequency current of several hundred Hz to several MHz and supplies it to the induction coil of the lamp unit via the tube lamp line, the connector, and the tube lamp line. In the high frequency power supply circuit, the high potential side output terminal is connected to the high potential side input terminal of the induction coil, and the low potential side output terminal is connected to the low potential side input terminal. Then, the lighting circuit unit and the lamp unit are connected and separated by attaching and detaching the connector.

Japanese Patent No. 4241341

  In the electrodeless discharge lamp device of Patent Document 1, matching between the output impedance of the lighting circuit unit (inverter) and the input impedance of the receiving circuit composed of a tube lamp line (cable) and a lamp unit is performed. It is necessary to take. Since the input impedance depends on the length of the tube lamp line, the length of the tube lamp line must be determined in advance in order to determine the input impedance.

  Furthermore, since a coupler, a tuning circuit, and the like are required for impedance matching, there is a problem that the circuit configuration becomes complicated and costs and labor are required. Moreover, since the electrodeless discharge lamp apparatus of Patent Document 1 uses a tube lamp line that is a two-core general cable such as a parallel line, there is a problem in that unnecessary radiation and unnecessary electromagnetic waves are emitted.

  By the way, an electromagnetic induction discharge lamp (electrodeless discharge lamp) has a long life because it does not have an electrode. Specifically, it can be lit for 60,000 to 100,000 hours. On the other hand, a ballast (inverter) that supplies high-frequency AC power to an electromagnetic induction discharge lamp has a shorter life than an electromagnetic induction discharge lamp, and therefore requires regular maintenance.

  However, when the distance between the electromagnetic induction discharge lamp and the ballast is short, the maintenance of the ballast alone is not easy and difficult to handle. For this reason, it can be considered that the distance between the electromagnetic induction type discharge lamp and the ballast is increased to, for example, 1 m or more, but there is a problem that the transmission efficiency of the high-frequency AC power is lowered.

  The present invention has been proposed in view of such circumstances, and does not require impedance matching. Even when the distance from the electromagnetic induction discharge lamp to the ballast is 1 m or more, the high-frequency AC power can be reduced. An object of the present invention is to provide an electromagnetic induction discharge lamp system capable of suppressing a decrease in transmission efficiency.

  An electromagnetic induction discharge lamp system according to the present invention includes a ballast that generates high frequency AC power of 100 kHz to 1 MHz based on power from a power source, an electromagnetic induction discharge lamp that is lit by the high frequency AC power, and a positive electrode And a shield wire that is shielded and grounded on both the side and the negative electrode side, and transmits high-frequency AC power generated by the ballast to the electromagnetic induction discharge lamp.

  The electromagnetic induction type discharge lamp system further includes at least one of a first high frequency connector that connects the ballast and the shield wire, and a second high frequency connector that connects the shield wire and the electromagnetic induction discharge lamp. You may prepare.

  In the electromagnetic induction discharge lamp system, the shield wire is any one of a coaxial cable, a shield pipe, and a shielded metal wire.

  The electromagnetic induction type discharge lamp system according to the present invention suppresses a decrease in transmission efficiency from the ballast to the electromagnetic induction type discharge lamp even when the distance from the electromagnetic induction type discharge lamp to the ballast becomes 1 m or more. Can do.

1 is a diagram showing a schematic configuration of an electromagnetic induction discharge lamp system according to a first embodiment of the present invention. It is a figure which shows schematic structure of the electromagnetic induction type discharge lamp system which concerns on the 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail.

[First Embodiment]
FIG. 1 is a diagram showing a schematic configuration of an electromagnetic induction discharge lamp system 1 according to a first embodiment of the present invention.
An electromagnetic induction discharge lamp system 1 includes an AC power source 11 that generates AC power, a ballast (inverter) 12 that converts AC power into high-frequency AC power in a predetermined frequency band, and a shielded wire that is a shielded transmission line. 13 and an electromagnetic induction discharge lamp 14 that is lit by high-frequency AC power.

  The AC power supply 11 generates AC power of, for example, 100V-240V / 50 Hz or 60 Hz. A commercial power source may be used instead of the AC power source 11. The AC power supply 11 is not essential and is an optional component. That is, the electromagnetic induction discharge lamp system 1 may generate high-frequency AC power using external AC power and turn on the electromagnetic induction discharge lamp 14 with the high-frequency AC power.

  The ballast 12 is grounded and has a positive terminal and a negative terminal for outputting high-frequency AC power. The ballast 12 generates high-frequency AC power from 100 kHz to 1 MHz based on AC power supplied from the AC power supply 11, and outputs the high-frequency AC power via the positive terminal and the negative terminal.

  The reason why the frequency band of the high-frequency AC power output from the ballast 12 is 1 MHz or less is to suppress a decrease in transmission efficiency of the high-frequency AC power. Therefore, since the ballast 12 incorporates a semiconductor (drive circuit) that is less expensive than a ballast that generates high-frequency AC power exceeding 1 MHz, the cost is reduced. The frequency band of the high-frequency AC power may be set (fixed) in advance, or may be adjustable by the user operating an illuminance controller provided in the ballast 12, for example.

  Since the ballast 12 has a shorter life than the electromagnetic induction discharge lamp 14, it is preferable to arrange the ballast 12 at a position lower than the electromagnetic induction discharge lamp 14 (for example, around 1 m above the ground). Thereby, the maintenance or replacement of the ballast 12 can be facilitated.

  The ballast 12 may have a configuration in which various functions are incorporated. For example, the ballast 12 may include a power switch, a remote switch, an infrared transmitter / receiver, an illuminance sensor, a power meter, a wireless LAN, a power line communication (PLC), a strong motion meter, or the like. In this case, the ballast 12 may be configured to include a controller that controls the built-in one. Thereby, the illumination intensity of the electromagnetic induction type discharge lamp 14 can be appropriately controlled, and power saving can be realized.

  Since the ballast 12 can be changed in function, a function (for example, a bus structure) suitable for the times and uses may be added.

  The shield wire 13 is a pair of conducting wires (tube lamp wires) that are respectively connected to the positive electrode terminal and the negative electrode terminal of the ballast 12 and shielded. Both the positive electrode and the negative electrode of the shield wire 13 are grounded. In order to distinguish the positive electrode and the negative electrode of the shield wire 13, different colors may be added to each.

  The length of the shield wire 13 should just be 1 m or more, and can be extended to 15 m. The shield wire 13 preferably has the same length on the positive electrode side and the negative electrode side in order to suppress a decrease in transmission efficiency. However, if the influence of the decrease in transmission efficiency is small, the positive electrode side and the negative electrode side of the shield wire 13 do not necessarily have the same length.

  As described above, since both the positive electrode side and the negative electrode side of the shield wire 13 are grounded and shielded, an increase in the capacitance between the electrodes when viewed from the ballast 12 is prevented, and unnecessary radiation and unnecessary electromagnetic waves are reduced. Can do.

  Instead of the shield wire 13, a shield pipe may be used, or a shield wire in which a metal wire such as a copper wire or an aluminum wire is shielded may be used. In this case, a structure that shields two or more lines individually may be used.

  The electromagnetic induction discharge lamp 14 has a longer life than the ballast 12 and requires less maintenance. Since the electromagnetic induction discharge lamp 14 is separated from the ballast 12 to reduce the weight, the electromagnetic induction discharge lamp 14 can be arranged not only in a low position such as an indoor ceiling but also in a high position such as a road light. .

  The electromagnetic induction discharge lamp 14 generates a high frequency magnetic field from the coil when high frequency AC power is supplied through the shield wire 13. Mercury is enclosed in the electromagnetic induction discharge lamp 14, and this mercury is affected by the high frequency magnetic field to generate ultraviolet rays. The mercury particles affected by the high-frequency magnetic field generate ultraviolet rays, and the phosphors applied to the inside of the electromagnetic induction discharge lamp 14 emit light by the ultraviolet rays. The illuminance of the electromagnetic induction discharge lamp 14 is controlled according to the magnitude and frequency of the high-frequency AC power.

  As described above, the electromagnetic induction discharge lamp system 1 according to the first embodiment includes the shielded wires 13 that are grounded and shielded on the positive electrode side and the negative electrode side, respectively. As a result, the electromagnetic induction discharge lamp system 1 prevents an increase in the interelectrode capacity even when high frequency AC power is supplied to the electromagnetic induction discharge lamp 14 using the shield wire 13, and the shield wire 13 Unwanted radiation and unnecessary electromagnetic waves that are radiated can be greatly reduced. Therefore, headache and dizziness can be prevented as an electromagnetic wave countermeasure. The same effect can be obtained by using an LED lamp instead of the electromagnetic induction discharge lamp 14.

  Furthermore, the electromagnetic induction type discharge lamp system 1 uses high-frequency AC power of 100 k to 1 MHz, so that matching adjustment is not necessary, and the shield wire 13 can be set to an arbitrary length. In addition, according to the specification of the type designation of the electromagnetic induction discharge lamp in the Radio Law Implementation Regulations, the operating frequency of the electromagnetic induction discharge lamp is set to 200 kHz to 300 kHz, 2.2 MHz to 3 MHz, 13.553 MHz to 13.567 MHz. It has been. However, the operating frequency of the electromagnetic induction discharge lamp 14 in the electromagnetic induction discharge lamp system 1 is not limited to the legal frequency.

  Further, the electromagnetic induction type discharge lamp 14 does not need to be integrated with the ballast 12, and therefore has a weight substantially equal to that of a conventional fluorescent lamp, lamp or the like. For this reason, the electromagnetic induction discharge lamp 14 can be designed with a high degree of freedom and can be installed without changing the structure of the building.

  Further, in the electromagnetic induction discharge lamp system 1, the ballast 12 can be arranged at a position lower than the electromagnetic induction discharge lamp 14 by being separated from the electromagnetic induction discharge lamp 14 by 1 m or more. As a result, the ballast 12 can be easily maintained or replaced, and only the electromagnetic induction discharge lamp 14 can be easily replaced.

  By the way, in the electromagnetic induction type discharge lamp system 1, the circuit on the left side (primary side) including the ballast 12 is regulated by law, and the circuit on the right side (secondary side) from the ballast 12 is not regulated by law. Therefore, even those who are not qualified for electrical work can perform maintenance or replacement of the shielded wire 13 or the electromagnetic induction discharge lamp 14.

  When the electromagnetic induction type discharge lamp system 1 is used as a crime prevention light or a road light, it is only necessary to maintain or replace the ballast 12 disposed at a low position. Congestion can be reduced.

  When the illuminance meter is built in the ballast 12, the electromagnetic induction type discharge lamp system 1 detects the ambient illuminance with the illuminance meter at an appropriate position, and when the illuminance becomes lower than a predetermined value, the electromagnetic induction type discharge lamp 14 is turned on. The electromagnetic induction type discharge lamp 14 can be turned off when the light is turned on and the illuminance becomes a predetermined value or more, and the surroundings can always be appropriately bright.

  When the seismometer is built in the ballast 12, the electromagnetic induction type discharge lamp system 1 measures the seismic intensity by the seismometer, and when the seismic intensity exceeds a predetermined value (when the earthquake occurs), the electromagnetic induction type discharge lamp 14 can be blinked, and the occurrence of the earthquake can be notified to the surroundings.

  When the wattmeter is built in the ballast 12, the electromagnetic induction type discharge lamp system 1 detects the power consumption of the electromagnetic induction type discharge lamp 14 and outputs the output of the ballast 12 so that the power consumption does not exceed a predetermined value. It becomes possible to manage.

  When the ballast 12 has a built-in wireless LAN, the electromagnetic induction type discharge lamp system 1 has a wireless LAN, a power line carrier, etc. for power consumption reports and information of the electromagnetic induction type discharge lamp 14, automatic power saving information, lighting / extinction information, etc. It becomes possible to transmit to the outside via communication.

  When the electromagnetic induction type discharge lamp system 1 incorporates an infrared transmitter / receiver unit (for example, corresponding to the IrDA standard) and a wireless LAN in the ballast 12, it performs passage measurement by the moving body, for example, transmission of emergency information to the moving body. Is possible. In addition, manual operation by a remote controller or automatic energy saving management becomes possible.

  When the electromagnetic induction type discharge lamp system 1 is provided with a backup battery in the ballast 12, it becomes possible to easily charge and discharge a DC circuit provided in the ballast 12.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In addition, a different point from 1st Embodiment is mainly demonstrated and the overlapping description is abbreviate | omitted.

  FIG. 2 is a diagram showing a schematic configuration of an electromagnetic induction discharge lamp system 1A according to the second embodiment. In addition to the configuration shown in FIG. 1, the electromagnetic induction discharge lamp system 1A includes a first high-frequency connector 21 that removably connects the ballast 12 and the shield wire 13, an electromagnetic induction discharge lamp 14, and a shield wire. And a first high-frequency connector 22 that is detachably connected. The electromagnetic induction discharge lamp system 1A may have a configuration including only one of the first high-frequency connector 21 and the second high-frequency connector 22. In this case, what is necessary is just to connect directly what was connected to the said other high frequency connector instead of the other high frequency connector.

  Thereby, the electromagnetic induction type discharge lamp system 1 can suppress the junction loss between the ballast 12 and the shield wire 13 and the junction loss between the electromagnetic induction type discharge lamp 14 and the shield wire 13 when transmitting high-frequency AC power. .

  Note that the present invention is not limited to the first and second embodiments described above, and can be applied to a design modified within the scope of the matters described in the claims.

DESCRIPTION OF SYMBOLS 1 Electromagnetic induction type discharge lamp system 11 AC power supply 12 Ballast 13 Shielded cable 14 Electromagnetic induction type discharge lamp 21 1st high frequency connector 22 2nd high frequency connector

Claims (3)

A ballast that generates high-frequency AC power of 100 kHz to 1 MHz based on power from a power source;
An electromagnetic induction discharge lamp that is lit by the high-frequency AC power;
Both the positive electrode side and the negative electrode side are shielded and grounded, and a shield wire for transmitting high-frequency AC power generated by the ballast to the electromagnetic induction discharge lamp;
Electromagnetic induction type discharge lamp system. The first high-frequency connector for connecting the ballast and the shield wire, and at least one of a second high-frequency connector for connecting the shield wire and the electromagnetic induction discharge lamp. Electromagnetic induction type discharge lamp system. The electromagnetic induction discharge lamp system according to claim 1, wherein the shield wire is any one of a coaxial cable, a shield pipe, and a shielded metal wire.

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