JP2001110361A - Dielectric barrier discharge lamp unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To give a sufficient insulation distance of power feeding portion mounted on adjacent bases and also a uniform distribution of illuminance on a illuminated plane to enhance the illuminance. SOLUTION: In a dielectric barrier discharge lamp unit in which a plurality of dielectric barrier discharge lamps 2 are arranged within a casing 1, the dielectric barrier discharge lamp 2 is equipped with two electrodes through a discharge vessel 3 with a slender appearance that functions also as a dielectric substance for dielectric barrier discharge, a base 5 with power feeding part electrically connected to both electrodes is provided only at an end of the discharge lamp, and neighboring dielectric barrier discharge lamps 2 are disposed within the casing so that respective bases 5 are located at positions opposite to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dielectric barrier discharge lamp device having a plurality of dielectric barrier discharge lamps arranged in a casing.

[0002]

2. Description of the Related Art A dielectric barrier discharge lamp as shown in FIG. 1 is conventionally known. Dielectric barrier discharge lamp 2
Has a discharge vessel 3 having an elongated outer shape also serving as a dielectric of a dielectric barrier discharge. The discharge vessel 3 has a hollow cylindrical shape composed of an inner tube and an outer tube. Is provided, and the other electrode 41 is provided on the outer surface of the inner tube. One electrode 4 is provided only at one end of the dielectric barrier discharge lamp.
Feeding part 50 electrically connected to zero and connected to ground
And a power supply portion 51 electrically connected to the other electrode 41 and applying a negative high volt.

As shown in FIG. 2, a plurality of such dielectric barrier discharge lamps are arranged in a casing 1 to constitute a dielectric barrier discharge lamp device. In this dielectric barrier discharge lamp device, a plurality of dielectric barrier discharge lamps each having an elongated discharge container are arranged side by side to irradiate a wide work such as a liquid crystal substrate. The bases 5 are arranged in the casing 1 so as to be located in the same direction.

[0004]

However, such a dielectric barrier discharge lamp device has the following problems. Since the bases 5 of the adjacent dielectric barrier discharge lamps 2 are located in the same direction, the bases 5 must be separated by a certain distance or more in order to keep the power supply portion 51 provided on the adjacent bases 5 insulated. However, since the distance between the discharge vessels 3 which are the light emitting portions of the adjacent dielectric barrier discharge lamps 2 becomes large, the illuminance distribution on the surface to be irradiated becomes uneven, and the adjacent dielectric barrier discharge lamps 2 are brought closer. A large number of dielectric barrier discharge lamps 2 could not be arranged in the casing 1 and the illuminance of the irradiated surface could not be increased.

A reflector is provided behind the discharge vessel 3,
It is possible to improve the illuminance unevenness by giving directivity to the light reflected by the reflector, but the design of the reflector becomes complicated, and the device becomes complicated, such as the necessity of another member called a reflector. There was a problem.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a structure in which adjacent dielectric barrier discharge lamps are provided with a base provided at one end of each dielectric barrier discharge lamp. Are disposed in the casing so as to be located in opposite directions, so that the insulation distance of the power supply portion provided in the adjacent base can be sufficiently secured, and the discharge as the light emitting portion of the adjacent dielectric barrier discharge lamp can be achieved. Since the container can be brought closer, the illuminance distribution on the surface to be irradiated can be made uniform without using a reflector, and the number of dielectric barrier discharge lamps arranged in the casing can be reduced. The illuminance of the surface to be irradiated can be increased.

[0007]

In a dielectric barrier discharge lamp device in which a plurality of dielectric barrier discharge lamps are disposed in a casing, the dielectric barrier discharge lamp has an outer shape which also serves as a dielectric of the dielectric barrier discharge. Is provided with one electrode and the other electrode via an elongated discharge vessel, and has a power supply portion electrically connected to the one electrode and the other electrode only on one end side of the dielectric barrier discharge lamp. A base is provided and adjacent dielectric barrier discharge lamps are arranged in the casing such that the respective bases are located in opposite directions.

[0008]

FIG. 3 is an explanatory view of a dielectric barrier discharge lamp device according to the present invention. The dielectric barrier discharge lamps 2a and 2b incorporated in the dielectric barrier discharge lamp device of the present invention are the same as the dielectric barrier discharge lamp shown in FIG. 1, and are electrically connected to one electrode and ground. Are provided with power supply portions 50a and 50b connected to the power supply portions and power supply portions 51a and 51b electrically connected to the other electrode and to which minus high volts are applied.

The dielectric barrier discharge lamps 2a and 2b incorporated in the casing 1 are disposed between adjacent dielectric barrier discharge lamps 2a and 2b.
The bases 5a and 5b provided on one end sides of the terminals a and 2b are arranged so as to be located in opposite directions. In FIG. 3, the electrodes are omitted.

As a result, the bases 5a and 5b of the adjacent dielectric barrier discharge lamps 2a and 2b do not interfere with each other, and the discharge vessels 3a and 3b, which are the light emitting portions of the dielectric barrier discharge lamps 2a and 2b, can be brought close to each other. In addition, the power supply portions 51a and 51b provided on the bases 5a and 5b of the adjacent dielectric barrier discharge lamps 2a and 2b can have a sufficient insulation distance.
No dielectric breakdown occurs between a and 51b. As a result, by bringing the discharge vessels 3a, 3b, which are the light-emitting portions of the adjacent dielectric barrier discharge lamps 2a, 2b, close to each other, the light-emitting portions of the dielectric barrier discharge lamps become substantially continuous without a large interval. In addition, the illuminance distribution on the irradiated surface can be made uniform without disposing a reflector.

Further, between the adjacent dielectric barrier discharge lamps 2a, 2b, each dielectric barrier discharge lamp 2a, 2b is disposed.
Since the bases 5a and 5b provided on one end side of the b are arranged so as to be located in opposite directions, the adjacent bases 5a and 5b do not interfere with each other as described above, and the adjacent dielectric barrier discharges do not occur. Lamps 5a, 5 for lamps 2a, 2b
The distance between b can be shortened, the number of dielectric barrier discharge lamps arranged in the casing 1 can be increased, and the illuminance of the irradiated surface can be increased.

Further, in such a dielectric barrier discharge lamp device, the discharge vessels 3a and 3b, which are light-emitting portions of the dielectric barrier discharge lamps 2a and 2b, are in a state of approaching, and the dielectric barrier discharge lamp at an arbitrary position is provided. By lighting only the discharge lamp, the illuminance portion on the surface to be irradiated can be easily and accurately controlled to an arbitrary distribution.

FIGS. 4 and 5 show another embodiment of the dielectric barrier discharge lamp used in the dielectric barrier discharge lamp of the present invention. In addition, the same code | symbol as FIG. 1 shows the same part.
In the dielectric barrier discharge lamp of FIG. 4, the discharge vessel 3 having an elongated outer shape has a hollow cylindrical shape as in FIG.
The coil-shaped electrode 4 is arranged so as to be in contact with the outer surface of the inner tube of the discharge vessel 3. The dielectric barrier discharge lamp of FIG. 5 is a lamp in which a coil-shaped electrode 4 is disposed in a discharge space of a discharge vessel 3 having an elongated outer shape, and only the outer tube of the discharge vessel 3 functions as a dielectric.

[0014]

As described above, according to the dielectric barrier discharge lamp device of the present invention, the adjacent dielectric barrier discharge lamp is connected to the base provided at one end of each dielectric barrier discharge lamp. Since it is arranged in the casing so as to be located in the opposite direction, the insulation distance of the power supply portion provided in the adjacent base can be sufficiently taken, and
Since the discharge vessel, which is the light emitting portion of the adjacent dielectric barrier discharge lamp, can be brought closer, even without using a reflector, the illuminance distribution on the irradiated surface can be made uniform,
Furthermore, since the distance between the bases of adjacent dielectric barrier discharge lamps can be reduced, the number of dielectric barrier discharge lamps arranged in the casing can be increased, and the illuminance of the irradiated surface can be increased. Can be.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a conventional dielectric barrier discharge lamp device.

FIG. 2 is an explanatory view of a dielectric barrier discharge lamp used in the conventional and barrier dielectric discharge lamp devices of the present invention.

FIG. 3 is an explanatory view of a dielectric barrier discharge lamp device of the present invention.

FIG. 4 is an explanatory diagram of a dielectric barrier discharge lamp used in the dielectric barrier discharge lamp device of the present invention.

FIG. 5 is an explanatory diagram of a dielectric barrier discharge lamp used in the dielectric barrier discharge lamp device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 2a, 2b Dielectric barrier discharge lamp 3a, 3b Discharge vessel 40 electrode 41 electrode 5a, 5b Base 50a Power supply part 50b Power supply part 51a Power supply part 51b Power supply part

Claims (1)

[Claims] 1. A dielectric barrier discharge lamp device in which a plurality of dielectric barrier discharge lamps are disposed in a casing, wherein the dielectric barrier discharge lamp has an elongated discharge vessel which also serves as a dielectric for dielectric barrier discharge. One electrode and the other electrode are provided through the base, and only at one end of the dielectric barrier discharge lamp is provided a base having a power supply portion electrically connected to the one electrode and the other electrode. A dielectric barrier discharge lamp device, wherein adjacent dielectric barrier discharge lamps are arranged in a casing such that respective caps are located in opposite directions.