JPH04169052A - Rare gas discharge lamp - Google Patents

Abstract

PURPOSE:To light one discharge lamp in plural regions by oppositely disposing plural pairs of strip electrodes on the external wall of a glass bulb along a bulb axis. CONSTITUTION:A phosphor film 4 is attached to the inner surface of a tube-like slender glass bulb 2 and a rare gas including xenon gas as its main component is enclosed therein and both ends thereof are sealed by sealing glass 5 and at the same time plural pairs of strip electrodes 6a1-6a4, 6b1-6b4 are oppositely disposed on the external wall of the glass bulb 2. In this case, a discharge lamp causes discharge of the xenon gas inside the glass bulb 2 between both electrodes 6a1, 6b1-6a4, 6b4 by applying the high voltage of a high-frequency wave across the oppositely disposed respective strip electrodes 6a1, 6b1-6a4, 6b4 and excites the surrounding phosphor film 4 to emit light. This light emission is a discharge in the orthogonal direction to the glass bulb axis since the strip electrodes 6a1-6a4, 6b1-6b4 are oppositely disposed on the external wall of the glass bulb 2. Thereby, the spaces between the plural strip electrodes oppositely disposed on the external wall of the glass bulb respectively act as miniature discharge lamps and their lighting control may be arbitrarily performed.

Description

DETAILED DESCRIPTION OF THE INVENTION ([) Industrial Application Field This invention is a long and narrow glass bulb whose inner surface is coated with a phosphor film, which is filled with a rare gas mainly composed of xenon gas. Regarding a rare gas discharge lamp in which a plurality of pairs of strip-shaped electrodes are arranged oppositely on the outer wall of the glass bulb,
The present invention relates to a novel discharge lamp that lights up a discharge lamp in a plurality of areas.

(2) Prior art This type of discharge lamp, which has an inert gas sealed in an elongated glass bulb, is generally filled with neon gas or argon gas. BACKGROUND ART Advertising lights and sign lights that display various shapes of figures and characters by applying a high voltage are conventionally known as advertising lights and sign lights. However, such conventional lighting control for discharge lamps involves blinking control in the discharge space between both electrodes, and although brightness can be controlled to some extent by increasing or decreasing the applied voltage, it is necessary to control the lighting of multiple discharge lamps in order to obtain dynamic changes. It was necessary to use a combination of lamps.

For this purpose, one end electrode is sealed to one end of the glass bulb, and a transparent electrostatic film is applied to the entire outer surface of the other glass bulb to form a transparent electrode, and the voltage applied between the two electrodes is controlled. A discharge lamp has also been devised in which the light emitting area is gradually increased by successively increasing the area (for example, Japanese Patent Publication No. 1-30253).

(3) Problems to be Solved by the Invention However, although the above-mentioned discharge lamp can increase or decrease the light emitting area by adjusting the applied voltage, it is not possible to blink an arbitrary spaced area; There was a problem that the luminous intensity at the end of the area decreased, resulting in a blurred state.

Therefore, the present invention has been made in view of the above, and an object of the present invention is to provide a rare gas discharge lamp that can freely control blinking of - discharge lamps in a plurality of arbitrary regions.

(4) Means for solving the problem For this reason, the discharge lamp according to the present invention has a phosphor film coated on the inner surface of an elongated tubular glass bulb, and a rare gas mainly composed of xenon gas is sealed inside. Both ends are sealed together, and a plurality of pairs of band-shaped electrodes are provided oppositely on the outer wall of the glass bulb.

(5) Function The above-mentioned discharge lamp applies a high frequency and high voltage between the opposite strip electrodes to generate a discharge of xenon gas within the glass bulb between the two applied electrodes and excite the surrounding phosphor film to emit light. let This light emission is caused by the phosphor film being mainly excited by this gas discharge because the strip electrode is placed opposite the outer wall of the glass bulb and the discharge is perpendicular to the axis of the glass bulb. , light emission can be controlled in accordance with the applied electrode.

Therefore, lighting can be arbitrarily controlled between the plurality of pairs of strip-shaped electrodes disposed opposite to each other on the outer wall of the glass bulb, each as a small discharge lamp.

(6) Examples An embodiment of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 and 2 are a partially broken pressure surface view of a rare gas discharge lamp 1 according to the present invention and a cross-sectional view thereof taken from the T line.

In the figure, 2 is a straight glass bulb made of lead glass with an outer diameter of 6 mm, a wall thickness of 0.51 m, and a length of 300 m. A membrane 4 is applied over substantially the entire axial length of the valve 2. 5 is a disk-shaped sealing glass that seals both end surfaces of the glass bulb 2, and is made of low melting point glass (lower than the melting point of the glass bulb 2).
high lead glass) is used. A rare gas containing Cannon (Xe) gas as one component is sealed inside the sealed glass bulb 2 at a gas pressure of 30 torr to 100 torr. On the other hand, on the outer wall of glass bulb 2,
Said light projection! Plural pairs of strip electrodes 6 on both sides along I1.3
a・6b (6a・6bI, 6a2・6b8.6an・6
b7) are arranged facing each other. These strip-shaped electrodes 6a and 6b are made of aluminum foil, paste, or other suitable electrode material, and are formed into strips having a predetermined width and length, and are spaced apart from each other.

Although not shown, the glass bulb 2 including these strip electrodes 6a and 6b is coated with a transparent insulating film made of silicone resin for insulation protection.

The rare gas discharge lamp 1 having such a structure includes each pair of strip electrodes 6a and 6b (6a), as shown in FIG. 3, for example.

6b1...6a4, 6b,) are connected to each high frequency high voltage power supply 8 (8I...84) of the control unit 7, and a high frequency high voltage of, for example, 20 KHz and 1500 V is applied to each of them. There is.

Now, the leftmost and third pair of strip electrodes 6a, 6 from the left.
When power is applied to 6b, 6a and 6b, xenon gas discharge occurs in this part of the glass bulb 2, and the phosphor film 4 in the part facing the strip electrodes 6a to 6b and 6a3 and 6b3 mainly It is excited and emits light, which shines outward from the light projection window 3 and emits -L3. This light emission can be freely controlled by controlling the application of power to the pair of strip electrodes 6a and 6b by a control unit.

FIG. 4 shows another embodiment of the present invention, in which one electrode 6b of the plurality of pairs of strip electrodes 6a and 6b attached to the outer wall of the glass bulb 2 of the rare gas discharge lamp 1 is connected to a common strip electrode. 6
A rare gas discharge lamp 9 having such a structure as shown in 6 and c.
Similarly to the rare gas discharge lamp 1, each of the strip electrode pairs 6al to 6a
The lighting can be driven by applying a voltage to the electrodes 4 and 6c. In addition, FIG.
・Phosphor film 41.4□ of different colors according to the position of 6b,
This is a rare gas discharge lamp 10 for color display formed of 43 and 44. In this case, adjacent strip electrode pairs 6a of each strip electrode
- It is desirable that the gap between the electrodes 6b be at least 31 mm to prevent the discharge of adjacent electrodes from exciting the neighboring phosphor film 4 and emitting weak light and emitting light in a different color. Furthermore, when the outer wall of the glass bulb between each pair of strip-shaped electrodes 6a and 6b is coated with a non-light-transmitting light shielding member 11, each pair of strip-shaped electrodes 6a and 6
The light emitted from part b becomes clearer, and it emits light as if a plurality of independent small lamps were installed in series.

FIG. 6 shows still another embodiment, in which filters 12 of different colors are arranged in the rare gas discharge lamp 1.9 of each of the above embodiments to match the position of each pair of strip electrodes 6a and 6b. The aim is to obtain a rare gas discharge lamp for color display.

The filter 12 is, for example, a transparent color filter 13 (13, 132, 133, 134) of red, blue, yellow, green, etc. arranged in a non-transparent frame at the same intervals as each pair of strip electrodes 6a and 6b from the left end. It is arranged in the shape of a window on the member 14, and the upper part of the glass bulb 1
It is pasted or attached and covered.

(7) Effects of the Invention As detailed above, the rare gas discharge lamp according to the present invention has a phosphor film coated on the inner surface of an elongated tubular glass bulb, and a rare gas discharge lamp containing xenon gas as a main component. is sealed and both ends are sealed, multiple pairs of strip-shaped electrodes are provided oppositely on the outer wall of the glass bulb, and power is applied to each pair of strip-shaped electrodes. Lighting can be controlled arbitrarily as a small discharge lamp. Furthermore, by forming a different phosphor film for each pair of strip-like electrodes or covering them with a color filter, it is possible to drive a multicolor display, which has great industrial value.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway city view of the rare gas discharge lamp of the present invention;
The figure is a sectional view taken from the line ■-■ in Figure 1, Figure 3 is a perspective view showing the lighting operation of Figure 1, and Figure 4 is a perspective view of a rare gas discharge lamp according to another embodiment of the present invention. 5 is a sectional view of a rare gas discharge lamp for color display according to still another embodiment of the present invention, and FIG. 6 is an ifE drawing of a color filter used in the rare gas hand discharge lamp of the present invention. 1.9.10... Rare gas discharge lamp, 2... Glass bulb, 4.4I~44-... Fluorescent film, 6a, 6b... Pair of strip electrodes 1. 6e... Common strip electrode, 11... Light shielding member, 12... Color filter. Fig. 5 (+1! limit of the present invention) +l and ηu-tki output exclusive'
Figure 6

Claims (5)

[Claims] (1) A phosphor film is coated on the inner surface of a tubular glass bulb, a rare gas mainly composed of xenon gas is sealed inside, and multiple pairs of band-shaped electrodes are attached to the outer wall of the glass bulb along the bulb shaft. A rare gas discharge lamp characterized by being installed oppositely along the line. (2) The rare gas discharge lamp according to claim 1, wherein one of the pair of band-shaped electrodes is formed of a common band-shaped electrode. (3) A rare gas discharge lamp according to claim 1, characterized in that a phosphor film of a different color is deposited depending on the region facing the pair of strip electrodes. (4) The rare gas discharge lamp according to claim 1, characterized in that a non-transparent light shielding member is coated on the outer wall of the glass bulb between each pair of strip electrodes. (5) The rare gas discharge lamp according to claim 1, characterized in that a color filter is coated corresponding to each pair of strip-shaped electrodes.