JPH1012389A - High-frequency, high-voltage lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-frequency, high-voltage lighting device having a discharge lamp being certainly lit and high safety. SOLUTION: This device pressure-rises an output of a high-frequency power supply 5 by means of a pressure rise circuit due to a resonance action of an inductance coil L and a capacitor C1, that pressure-risen high-frequency, high voltage is applied to between electrodes 3a and 3b of a discharge lamp 3 via a pair of sockets 4a and 4b. In this case, the inductance coil L and the capacitor C1 constituting the pressure rise circuit 7 are disposed at the socket 4a on a high grounding voltage side, and wiring with high grounding voltage is shorted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency high-voltage lighting device, and more particularly to an arrangement of a high-voltage section.

[0002]

2. Description of the Related Art An output of a power supply obtained by appropriately converting a commercial power supply frequency to a high frequency by an inverter or the like is boosted by a boosting circuit such as a boosting transformer, and the boosted high-frequency high voltage is applied between electrodes at both ends of a discharge lamp. There is a high-frequency high-voltage lighting device for lighting a discharge lamp. The appliance of such a high-frequency high-voltage lighting device is configured, for example, as shown in FIG.
That is, FIG. 4 is a schematic view of a lighting fixture excluding a power supply unit of a high-frequency high-voltage lighting device, 1 is a fixture main body formed by appropriately bending a metal plate, 2 is a reflection plate, 4a and 4b use a discharge lamp 3 as a power supply. A pair of sockets that are connected and support the discharge lamp 3.

[0005] Usually, a power supply unit such as a high-frequency inverter or a booster circuit is fixedly arranged in the appliance body 1, and the power supply unit and a pair of sockets are connected by a covered electric wire or the like laid in the appliance body 1. Have been.

[0004]

By the way, in such a high-frequency high-voltage lighting device, the wiring from the booster circuit to the socket is long, and the wiring capacity reduces the high voltage applied to the discharge lamp for starting. In addition, there is a problem in that the discharge lamp is easily affected by noise or the like that occurs immediately before the discharge lamp is turned on, and lighting failure of the discharge lamp or flickering of illumination occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a high-frequency high-voltage lighting device in which a discharge lamp is reliably lit and which has high safety.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a high frequency power supply, a booster circuit for boosting an output of the high frequency power supply,
A high-frequency high-voltage lighting device having a pair of sockets connected to one and the other of the output terminals of the booster circuit and for applying the output of the booster circuit to a discharge lamp, wherein the booster circuit includes one of the pair of sockets This is achieved by a high-frequency high-voltage lighting device characterized in that it is arranged at a position near the socket.

Another object of the present invention is to provide a high-frequency power supply, a booster circuit for boosting the output of the high-frequency power supply, and one of the output terminals of the booster circuit connected to one and the other of the output terminals. In a high-frequency high-voltage lighting device having a pair of sockets to be applied, the high-voltage high-voltage lighting device is characterized in that the booster circuit is installed in one of the pair of sockets. You.

According to the above feature of the present invention, the wiring having a high ground voltage can be shortened, and the reduction of the high voltage applied to the discharge lamp for starting and the noise are reduced. Can be reliably turned on, and it is difficult to touch the high-voltage portion, so that safety is enhanced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a discharge lamp lighting device according to the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of a high-frequency high-voltage lighting device according to the present invention, FIG. 2 is a side view of a socket on the higher ground voltage side, and FIG. 3 is a front view of the socket of FIG. Note that the same portions are denoted by the same reference numerals throughout the drawings, and redundant description will be omitted. 2 and 3, a part of the socket structure is omitted.

In FIG. 1, 3 is a discharge lamp, 4a and 4b are a pair of sockets, 5 is an inverter (high frequency power supply) for converting the frequency of the commercial power supply 6 to high frequency, and 7 is a booster circuit. Output of the inductor C
And the capacitor C1 is boosted using the LC resonance, and the inductance coil L and the capacitor C1 are boosted.
And the like are installed in the socket 4a.

FIGS. 2 and 3 show the socket 4a on which the booster circuit 7 is installed. The front side of the insulating structure made of porcelain forming the socket 4a (the opposite side to which the discharge lamp is mounted). Support pins 10 are erected at appropriate positions (up and down positions in the figure) on the back surface of the substrate 8.
The printed circuit board 9 is fixed to 0.

On the printed circuit board 9, an inductance coil L, a capacitor C1, and an inverting capacitor C2 forming the booster circuit 7 are sequentially arranged from a position near the terminal portion 11 of the socket 4a to which one electrode 3a of the discharge lamp 3 is connected. The two ends of one electrode 3a of the discharge lamp 3 are connected to one end D of the inductance coil L and one end E of the capacitor C1. As shown in FIG. 1, the other end A of the inductance coil L is pulled out from below the socket 4a, and the output of the high-frequency power supply 5 mounted on the inside of the appliance body 1 shown in FIG. Connected to the end.

The other end F of the capacitor C1 is connected to an electric wire 12 covered with vinyl or the like stretched inside the appliance main body 1 shown in FIG. 4 and is connected to one end of the other electrode 3b of the discharge lamp 3 in the socket 4b. Connected to the terminal to be connected. A terminal of the socket 4b connected to the other end of the other electrode 3b of the discharge lamp 3 is connected to one end G of the inverting capacitor C2 by an electric wire 13 coated with vinyl or the like. The other end B of the inverting capacitor C2 is drawn out from below the socket 4a, and is connected to the output terminal on the ground voltage side of the high-frequency power supply 5 mounted inside the appliance body 1.

In the high-frequency high-voltage lighting device configured as described above, the output of the high-frequency
The voltage on the higher side of the ground voltage is applied to one electrode 3 a of the discharge lamp 3, and the voltage on the ground voltage side is applied to the other electrode 3 b of the discharge lamp 3. Discharges between both electrodes and lights up. In this case, the wiring with a high ground voltage is extremely short, and there is almost no decrease in high voltage applied to the discharge lamp and no noise, so that the discharge lamp 3 can be reliably turned on.

Although one lamp is used in the example, it is optional to install a booster circuit in one of the pair of sockets for a plurality of discharge lamps. Further, the installation position of the booster circuit need not be mounted on the socket. In this case, the booster circuit may be installed near the socket on the side with the higher ground voltage. Further, the boosting circuit is not limited to the one using the LC resonance, but may be one using a transformer or the like.

[0016]

As described above, according to the present invention, the wiring having a high ground voltage can be shortened, and the reduction of the high voltage applied to the discharge lamp for starting and the noise can be reduced. Thus, the discharge lamp can be reliably turned on. In addition, it is difficult to touch the high-pressure portion when replacing the discharge lamp or performing maintenance, so that safety is enhanced.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a high-frequency high-voltage lighting device according to the present invention.

FIG. 2 is a side view of the socket on the high voltage side of the high frequency high voltage lighting device of FIG. 1;

FIG. 3 is a front view of the socket of FIG. 2;

FIG. 4 is a schematic perspective view of a lighting fixture of the high-frequency high-voltage lighting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lighting fixture main body 2 Reflector 3 Discharge lamp 3a, 3b Discharge lamp electrode 4a, 4b socket 5 High frequency power supply 6 Commercial power supply 7 Boost circuit 8 Socket board 9 Printed circuit board L Inductance coil C1, C2 Capacitor

Claims (2)

[Claims] 1. A high-frequency power supply, a booster circuit for boosting the output of the high-frequency power supply, and a pair of sockets connected to one and the other of the output terminals of the booster circuit for applying the output of the booster circuit to a discharge lamp. The high-frequency high-voltage lighting device according to claim 1, wherein the booster circuit is arranged at a position near one of the pair of sockets. 2. A high-frequency power supply, a booster circuit for boosting the output of the high-frequency power supply, and a pair of sockets connected to one and the other of the output terminals of the booster circuit for applying the output of the booster circuit to a discharge lamp. The high-frequency high-voltage lighting device according to claim 1, wherein the booster circuit is installed in one of the pair of sockets.