JPH02112146A - Fluorescent lamp - Google Patents

Abstract

PURPOSE:To make a fluorescent lamp to have high brightness by placing each of other electrodes, for making discharge toward a common electrode, at each corner of a luminous room, whose plane shape is a quadrangle, so as to extend the length of each discharge path. CONSTITUTION:A plane quadrangle luminous room 11 is partitioned into four parallel discharge paths 13a to 13d by a cross partition plate 12, and each forms luminous small room. And a common electrode 15 is provided at the bottom center of the luminous room 11. Other electrodes 16, for making discharge toward the common electrode 15, are placed at corners of the small luminous rooms 13a to 13d respectively. Accordingly, the distance between each electrode l1, for example, 16b and the center of the common electrode 15 is longer than l2, the distance between conventional electrode 17 and the center of the common electrode 15 by L. That is, each discharge path can be extended by L so that more wattage of power can be input to the fluorescent lamp, thus high brightness of the fluorescent lamp can be obtained to that extent.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention is directed to a fluorescent lamp suitable for use as a display element of an electronic display panel, for example, and a fluorescent lamp suitable for a light emitting element of Airoba decorative lighting. In particular, the present invention relates to a fluorescent lamp with high brightness.

(Prior Art) In general, display fluorescent lamps suitable for display elements such as electronic display panels include single-tube monochromatic or single-tube multicolor fluorescent lamps. For example, although it is not known in the art, a common electrode such as a cathode and a plurality of other electrodes such as anodes are placed in a cylindrical glass bulb filled with a discharge gas such as mercury and a rare gas. There are fluorescent lamps that are placed axially opposite each other and hermetically housed.

In addition, in the discharge space between the common electrode and each other electrode, this fluorescent lamp is airtightly equipped with a discharge path regulating body that arranges a plurality of parallel discharge paths in a part of this discharge space in correspondence to the number of electrodes on the other side. It is accommodated in

In other words, the discharge path regulating body has a plurality of parallel discharge paths arranged in parallel between the common electrode and each of the other electrodes, corresponding to the number of electrodes on the other side. A plurality of light-emitting chambers are formed by covering each discharge path with a required fluorescent film so as to emit light of a different color, and light of an appropriate color is emitted depending on the common electrode and the other electrode that performs discharge. .

(Problem to be Solved by the Invention) However, in such a fluorescent lamp, the bulb is cylindrical, and the planar shape of the display surface that outputs the light emitted from the light emitting chamber is not shown in Fig. 6 (A). J: In the case of a sea urchin shape, for example, a relatively large gap X is formed in the center between four adjacent fluorescent lamps 1, 1, 1. The brightness of the entire display panel will now be reduced.

Therefore, as shown in Fig. 6<13), the fluorescent lamp 2.2
, 2.2 is formed into a rectangular plane and arranged and covered with the same pitch a as the cylindrical fluorescent lamps 2..., it is possible to reduce the dark area X in the center between the fluorescent lamps 2... I can get K.

However, although this fluorescent lamp 2 can improve the brightness of the entire electronic display board when arranged on an electronic display board, it is not possible to improve the brightness of the bulbs 2 themselves.

Therefore, the present invention has been made in consideration of the above circumstances, and its purpose is to achieve high I! 1Ii11 The aim is to provide a fluorescent lamp that can be used.

[Structure of the invention'] (1ζth means for solving the problem) Figure 1 [A plan view showing the principle of the invention stated in claim 1 of the present application (hereinafter referred to as the invention of box 1) In the figure, the light emitting chamber 11, which is rectangular in plane, is connected to a cross-shaped partition plate 12, for example, four parallel discharge paths '13a,
13b, 13c, 13dk: partitioned.

A fluorescent film that emits light in a desired color is coated on the surface facing each of the parallel discharge paths 138 to 13C1, and each is configured into a light emitting chamber,
For example, a circular discharge hole 14 is opened at the center of the bottom of the light emitting chamber 11 and communicates with a common electrode chamber that accommodates a common electrode 15 .

Each of the other electrodes 16, 16b, 1 according to the first invention of the present application
6c, 16d, ... are arranged at each corner of each light emitting chamber 13a to 13d, so that the distance j! between each electrode, for example 16b, and the center of the common electrode 15 is j! 1 becomes longer by ΔL than the distance J2 between the electrodes 17 and the like in the conventional example.

That is, the electrodes 16a to 16d according to the first invention of the present application
According to Δ[-minute 1), it is possible to extend the discharge path and use the extension valve to input more watts (W), so it is possible to increase the brightness of the quantity light lamp. Can be done.

That is, the invention described in claim 1 of the present application (
Hereinafter referred to as the first invention), an electrode used for discharging by being arranged opposite to a common electrode is housed in a light emitting chamber having a rectangular planar shape, and a fluorescent film is coated on the surface facing the inside of the light emitting chamber. A fluorescent lamp characterized in that the other electrode is disposed at a corner of a light emitting chamber.
(hereinafter referred to as invention in box 2) is the fluorescent lamp according to claim 1, wherein a common electrode chamber for accommodating a common electrode is formed at the rear of the light emitting chamber, and the common electrode chamber has a planar shape that is similar to that of the light emitting chamber. A power supply body formed to form a circle inscribed in a plane square or a circle with a smaller diameter and connected to the other electrode is suspended from a corner of the light emitting chamber to a side of the common electrode chamber. Characterize.

(Function) <First invention> As described above, since the common electrode and the other electrode that performs discharge are respectively arranged at each corner of the light emitting chamber having a rectangular planar shape, there is no contact between the common electrode and the other electrode. It is possible to extend the length of the discharge path between the common electrode and the watt (W).
It is possible to use more manpower and increase the brightness of fluorescent lamps.

<Second invention> The planar shape of the light-emitting chamber that accommodates the common electrode and the other electrode that performs discharge is square, while the common electrode chamber that accommodates the common electrode is circular within the square shape of the light-emitting chamber, Alternatively, since the light emitting chamber has a circular shape with a smaller diameter, each corner of the light emitting chamber is located outward from the outer periphery of the common electrode chamber.

Therefore, by suspending power supply bodies electrically connected to the side electrodes arranged at each corner of the light emitting chamber from each corner of the light emitting chamber toward the common electrode chamber, a common It can be made to hang down to the side without contacting the outer peripheral edge of the electrode chamber.

As a result, it becomes very easy to pull out each power supply connected to each other electrode from the light emitting chamber and to perform electrical insulation processing.
This has the effect of making it easier to assemble the fluorescent lamp.

(Example) An example of the first and second inventions of the present application will be described below based on the drawings.

FIG. 2 is a plan view of an embodiment of the present invention, and FIG. 3 is a sectional view taken along line A-A in FIG. 2. In these figures, the lamp casing 20 of the envelope is made of metal such as stainless steel or iron. It is formed from a thin plate, for example by punching, into a cylindrical shape at the bottom right, with one axial end (upper end in the figure) open.

As shown in FIGS. 3 and 4, the lamp casing 20 has an upper opening portion 20a and a lower step portion 20b, each of which has a rectangular planar shape, by sequentially widening its opening into a rectangular tube shape in two stages, as shown in FIGS. By forming this lower step portion 20b
A glass coating (not shown) is applied to the entire inner peripheral surface from the lower end of the lamp casing 20 to the lower bottom of the lamp casing 20.
The glass coating prevents the impurity gas contained in the metal lamp holder 20 from being released when a discharge occurs within the lamp casing 20 and the IC is activated. I'm here.

Further, a center hole 20C is bored in the bottom of the lamp casing 20.

Next, the configuration of this embodiment will be explained based on FIG. 4, almost according to the assembly.

First, a button stem 21 formed into a disk shape made of glass to fit the cylinder of A is inserted into the cylindrical lower part of the lumbuter lamp 20, and is tightly fitted into the cylindrical bottom.

After this, the outer peripheral surface of the button stem 21 is aligned with the lamp casing 2.
The frit 1 is welded and fixed to the inner peripheral surface of the lower bottom of the button stem 21 by glass or high-frequency heating, and a common electrode 15, which is one of a pair of discharge electrodes, is erected on this button stem 21. The tip ends of a pair of lead wires 22a and 22b supporting both ends are passed through the button stem 21 in the thickness direction and electrically connected to a lighting circuit (not shown).

Further, the button stem 21 has a center hole 21a bored in its center, and this center hole 21. A glass exhaust pipe 23 is integrally protruded from the periphery of the lower opening of the lamp 20, and the button stem 21 is airtightly fitted into the bottom of the lamp 20 as shown in FIG. The tip of the exhaust pipe 23 extends outward from the bottom center hole 20c of the lamp casing 20.

Therefore, the button stem 21 is easily fixed by inserting it into the bottom of the lamp gauging 20 with the exhaust pipe 23 facing down and fixing it with the flip 1 - glass, etc., making it very easy to install the cathode 15 into the lamp casing 20 becomes easier. However, since the button stem 21 has a disc shape that fits the inner peripheral surface of the lower bottom of the lamp casing 20,
It is easy to fit the button stem 21 into the lamp casing 20, and (1) it is easy to stop it.

Further, since the cylindrical lower part of the lamp casing 20 accommodates the cathode 15 which is a common electrode, the common electrode chamber 2
OR, and the outline of this common electrode chamber 2OR is the second
This circle, indicated by a broken line in the figure, is inscribed in a planar rectangle of a light emitting chamber 13, which will be described later.

Next, the outer gauging 25 of the discharge regulating body 24 is inserted into the lamp casing 20 as shown in FIG.

The discharge regulating body 27'l has a light emitting chamber 1 having a rectangular plane inside.
As shown in FIG. Light emitting chamber 13a.

It consists of a cross-shaped partition plate 12 that partitions each light emitting chamber 13b, 13c, and 13d, and each inner surface of the outer casing 25 facing each light emitting chamber 13a to 13d and each outer surface of the partition plate 12 have a
For example, a fluorescent film 27 that emits light in a different color is attached to each of the light emitting chambers 13a to 13d.

The outer casing 25 has an upper part in the figure formed into a truncated quadrangular pyramid tapering downward, and a lower part in the figure is integrally connected in a cylindrical shape, and a circular discharge hole 14 is opened at the bottom of this cylindrical lower part. I'm letting you do it.

Inside the lamp casing 20, as shown in FIG.
is supported by being engaged with the inner surface of each hooker portion.

After inserting this outer casing 25 into the lamp casing 20, a cross-shaped partition plate 1 is inserted into this outer casing 25.
After that, the other electrodes, for example, four anodes 16a, 16b, 16c and 16d, are inserted into the lamp casing 20.

Each of the anodes 16a to 16d has a straight short shaft with a slightly larger diameter at its tip, and each of the light emitting chambers 138 to 16d has a substantially rectangular shape.
It is arranged at the upper end of each corner within 13d.

The upper end of each lead wire 28 as a power feeder in the figure is coaxially fixed to the lower end of each of the anodes 16a to 16d, and the tip of each lead wire 28 is connected to the lower end of the lower step 20b of the lamp casing 20. The bottom extends vertically through the shell in an airtight manner and is electrically connected to a lighting circuit (not shown).

That is, as shown in FIG.
It further hangs vertically downward on the side spaced from the outer peripheral surface of 4i20R.

In this way, since each lead wire 28 is spaced apart from the outer peripheral surface of the common electrode chamber 20R, the tip of each lead wire 28 can be easily taken out downward in the figure, which simplifies the assembly work. Since each lead wire 28 is not in contact with the outer peripheral surface of the common electrode 2OR, the electrical insulation treatment of each lead wire 28 is simplified.

Next, a face glass 29 made of transparent glass in the shape of a rectangular flat plate is fitted into the upper step portion 2Oa of the lamp casing 20.
The inner surface of the face glass 29 is brought into contact with the upper end of the outer casing 25 of the discharge path regulating body 24 and the partition plate 12, and the face glass 29 is fixed to the upper step part 20a, and the face glass 29 is used as the display surface of the fluorescent lamp. shall be.

Next, the operation of this embodiment will be explained.

When the cathode 15 and a required anode, for example 16a, are energized, discharge occurs between the cathode 15 and the anode 16a. This discharge excites the mercury atoms in the light-emitting chamber 13a equipped with the anode 16a to generate ultraviolet rays, which excites the fluorescent film 27 of the light-emitting chamber 13a to emit light in a desired color. It is emitted outward from 29.

In addition, since the lamp casing 20 is made of metal and has a light-shielding property, the light emitted within the light emitting chamber 13a can be prevented from being emitted to the side of the lamp casing 20, and many of these fluorescent lamps can be used for electronic display. When a large number of highly dense traces are arranged on a board or the like, it is possible to prevent color mixing with the emitted light color of an adjacent fluorescent lamp.

Further, when a discharge is generated in all the anodes 16a to 16d and the cathode 15, the ultraviolet rays in all the light emitting chambers 138 to 13d excites all the fluorescent films and emit light in each color, so that all the light is emitted from the face glass 29. A mixture of emitted light colors, such as white light, is emitted to the outside.

As described above, according to this embodiment, the outer circumferential circle of the common electrode chamber 2OR, which is circular in plan, is inscribed in the light emitting chamber 11, which is rectangular in plan, and each corner of the light emitting chamber 11 projects outward from this inscribed circle. Since the anodes 16a to 16d are respectively disposed at the corners, the cathode 15 which is a common N pole and each anode 168 to 1
6d, the length of the discharge path can be increased.

Furthermore, since the tips of the leads 128 fixed to each of the anodes 168 to 16d can be passed to the side away from the outer peripheral surface of the common electrode chamber 20R, each lead wire 28 can be drawn out downward. Each lead wire 2
Since the lead wires 8 are not in contact with the outer peripheral surface of the common electrode chamber 2OR, the electrical insulation treatment of each lead wire 28 is facilitated.

In the above embodiment, the case where the light emitting chamber 11 is configured to have a rectangular plane is explained, but the present invention is not limited to this. For example, as shown in FIG. 5(A), The light emitting chamber 11A may be formed into a triangular shape, and its interior may be divided into approximately three equal parts by a 7-shaped partition plate 12△ to form three light emitting chambers 13a to 13G, or as shown in FIG. 5(B). As shown in , the light emitting chamber 11B may be formed into a polygonal shape with chamfered corners of the rectangle, and may be partitioned into light emitting chambers 3a to 13d by a cross-shaped partition plate 12B. The effect of Qin can be reduced.

(Effects of the Invention) In the first invention of the present application J and Uni described above, the other electrodes, which are arranged opposite to the common electrode and perform discharge, are arranged in a corner of the light emitting chamber without having a rectangular planar shape. So,
The distance between the common electrode and the other electrode 'I1m#t, 1 makes it possible to extend the length of the discharge path, and it is possible to insert an extension valve or a large number of straws into the hole. , it is possible to increase the brightness of a fluorescent lamp.

Furthermore, the second invention of the present application is a
In -3, the common electrode chamber that accommodates and covers the JJ conducting electrode was formed into a circular shape that was inscribed in its plane shape or the plane rectangle of the light emitting chamber, or a circle with a smaller diameter. The other electrode is disposed at a corner of the light emitting chamber, protruding outward from the circular shape forming the outer peripheral surface.

Therefore, the power supply connected to the other electrode can be suspended and drawn out on the side spaced apart from the outer circular surface of the common electrode chamber, and can be drawn out, making it easy to draw out these power supply bodies. Moreover, since each power supply body is not in contact with the outer circumferential surface of the common electrode chamber, there is an effect that the electrical insulation treatment of the power supply body becomes easier.

[Brief explanation of the drawing]

FIG. 1 is a plan view for explaining in detail the first invention of the present application, FIG. 2 is a plan view showing an embodiment of the fluorescent lamp according to the first and second inventions of the present application, and FIG. FIG. 4 is an exploded view of the embodiment shown in FIGS. 2 and 3, and FIG. 5A is a sectional view taken along the line A-A in the figure. (B) is a plan view showing other embodiments of the first and second inventions of the present application, respectively, and FIGS. 6(A) and (B) show the arrangement of conventional cylindrical fluorescent lamps and square fluorescent lamps. This is a plan view. 11... Light emitting chamber, 12... Partition plate, 13a, 13b
, 13c, 13d... Light emitting chamber, 15... Cathode (common type i>, 16a, 16b, 16c, 16d...
・Anode (other electrode), 20... lamp casing, 2OR... common electrode chamber, 24... discharge regulator,
28... Lead wire. (A) (B) Figure Figure Figure (A) (B)

Claims (1)

[Scope of Claims] 1. A fluorescent lamp in which the other electrode, which is disposed opposite to the common electrode and performs discharge, is housed in a light-emitting chamber having a rectangular planar shape, and a fluorescent film is coated on the surface facing the inside of the light-emitting chamber. In,
A fluorescent lamp characterized in that the other electrode is arranged at a corner inside the light emitting chamber. 2. In the fluorescent lamp according to claim 1, a common electrode chamber for accommodating the common electrode is formed at the rear of the light emitting chamber,
The common electrode chamber is formed so that its planar shape is a circle inscribed in the planar rectangle of the light emitting chamber, or a circle with a smaller diameter than that, and the power supply connected to the other electrode is connected from a corner of the light emitting chamber. A fluorescent lamp, characterized in that the lamp is suspended from the side of the common electrode chamber.