JPH02129847A - Fluorescent lamp - Google Patents

Abstract

PURPOSE:To easily arrange a lamp and make the lamp with high intensity and prevent dispersion thereof by arranging the lamp as the axis of an electrode filament crosses the axis in discharge space and forming a plurality of discharge passages between the electrode filament and each electrode. CONSTITUTION:Electrodes 14a, 14b, 14c, 15a, 15b and 15c are provided respectively at an end portion of the bottom face of an airtight container 1 far from a hole 3 provided in the center portion of the bottom face, that is, an end portion of discharge space. A plurality of discharge passages are formed between an electrode filament 9 and the electrodes 14a, 14b, 14c, 15a, 15b and 15c. The electrode filament 9 is provided as its axis crosses the axes of the discharge spaces 6a, 6b, 6c, 7a, 7b and 7c. The ratio of a fluorescent face to the area of a lamp thus becomes large. Therefore, high intensity is obtained and its dispersion is prevented since thermoelectron-feeding to each discharge space becomes unified.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a fluorescent lamp used as a light emitting element of a large color image display device.

2. Description of the Related Art A fluorescent lamp as shown in FIG. 5 has been proposed in Japanese Patent Application Laid-open No. 55851/1983 as a light emitting element having a plurality of picture elements used in a large color image display device. In this figure, discharge space 16 al t 6 b+
1 e c represents one picture element, discharge space 17 al
17 b + 17 c each form another picture element.

In addition, in FIG. 5, 18 indicates an electrode and 18 indicates an electrode filament, respectively.

Problems to be Solved by the Invention However, in the configuration shown in FIG. 5, when this fluorescent lamp is used as a light emitting element of a large color image display device, since the external shape is hexagonal, it is difficult to arrange the lamp on the screen. is complicated and assembly is not easy. In addition, in such a lamp shape, the discharge path is generally rod-shaped, so
The ratio of the light emitting area to the lamp area becomes small, and the light emission brightness decreases. Furthermore, in the configuration shown in FIG.
Since thermoelectrons are supplied around the axis of the filament coil, there are discharge spaces where the axis of the discharge space is not perpendicular to the axis of the filament coil, and as a result, the supply of thermoelectrons to each discharge space tends to be uneven. Therefore, the discharge sustaining voltage becomes non-uniform, which tends to cause uneven brightness.

The present invention was made to solve these problems, and the lamp arrangement on the screen is simple and assembly is easy.
Another object of the present invention is to provide a fluorescent lamp that has a large ratio of light emitting area to lamp area, has high brightness, and prevents uneven brightness.

Means for Solving the Problem In order to solve this problem, the fluorescent lamp of the present invention has a rectangular parallelepiped airtight container body having a translucent front plate and an electrode filament storage integrated into the bottom of the airtight container body. forming an airtight container from the airtight container body, and forming a plurality of discharge spaces by providing a lattice-like partition wall in the airtight container main body,
A hole is provided independently in the center of the bottom of the airtight container for communicating each discharge space with the space of the electrode filament housing, and the electrode filament provided in the electrode filament housing is connected to the electrode filament. The axis of the discharge space is arranged in a direction perpendicular to the axis of the discharge space, and an electrode is provided at the end of each discharge space far from the hole, so that a plurality of discharge paths are formed between the electrode filament and each electrode. A plurality of picture elements are formed by forming a plurality of picture elements and applying a phosphor to a portion of the airtight container body that will become each discharge path.

Function When the fluorescent lamp of the present invention is used, for example, as a light emitting element in a large color image display device, the shape of the airtight container body is a rectangular parallelepiped, so the lamp arrangement on the screen is extremely simple, and the light emission relative to the lamp area is Since the area ratio is large, high brightness can be obtained, and since the electrode filament is arranged perpendicularly to the axis of each discharge path, the supply of thermoelectrons to each discharge space is uniform, and this Therefore, the discharge sustaining voltage is made uniform, and uneven brightness can be prevented.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view of a fluorescent lamp according to an embodiment of the present invention, and FIG. 2 is a front view of the same.

As shown in FIG. 1, the fluorescent lamp according to the embodiment of the present invention includes a rectangular parallelepiped airtight container body 1 made of a ceramic container, a front plate 2 made of a glass plate sealed to the front surface with low-melting glass, and The airtight container is constituted by an electrode filament storage section 4 made of a glass tube whose one end is sealed with low melting point glass in a hole 3 made in the rear surface of the airtight container main body 1 and whose other end is sealed. Inside the airtight container body 1, there is a partition wall 5.
are integrally molded in a lattice shape, and six discharge spaces 6a+ 6b+ 6c, 7a+ 7b+
7c is formed. As shown in FIG. 2, small holes 8 are independently provided in the center of the bottom of the airtight container body 1, that is, at one end of each discharge space, and these holes connect each discharge space to the other. Electrode filament storage section 4
The space is in communication with the space.

In the vicinity of these holes, a coiled electrode filament 9 provided in the electrode filament housing 4 is supported by two internal lead-in wires 10 and arranged. The two internal lead-in wires 10 are supported by a stem 11, and external lead-in wires 13 are connected to these, respectively. Note that 12 indicates an exhaust pipe. Further, at the end farthest from the hole 8, that is, at the other end of these discharge spaces, electrodes 14a,
14 b.

14 C115al 15 b, 15 c are provided to connect the electrode filament 9 and the electrodes 14 a, 14
b, 14C+ 15a+ 15b+ 15
A plurality of discharge paths are formed between the This axis of the electrode filament 9 is the discharge space eat 6bs 6c
s 7a, 7b+7C are provided in a direction perpendicular to the axis. Mercury and rare gas are sealed inside the airtight container.

A rare earth phosphor that emits green (G) light is placed on the ceramic walls forming the discharge paths of the airtight container body 1, that is, the discharge spaces 6a and 7a.
A rare earth phosphor that emits red (R) light is coated on the ceramic wall surface forming the discharge space 6C+7c, and a rare earth phosphor that emits blue light (B) is coated on the ceramic wall surface forming the discharge space 6C+7c. .

As described above, the discharge spaces 6a, 6b, and 6c form one picture element, and the discharge spaces 7a+7b, and 7c form another picture element.

A current is passed through the electrode filament (cathode) 9 of such a light emitting element, and each electrode (anode) 14a, 14b.

By selecting and applying the voltage necessary to start the discharge to 14c, 15a, 15b+15c and changing the current flowing through each discharge path, the chromaticity within the range shown in Figure 3 can be obtained. was completed. As you will see, the color reproducibility is almost the same as that of currently used color TVs, and the color reproducibility is good.

It was also found that when these currents were changed over time, the brightness changed to follow the changes.

Such a result means that this light emitting device can be used for displaying color images.

When the brightness of such a light emitting element was compared with that of a light emitting element with a conventional structure as shown in FIG. In contrast, the brightness was about 1.3 times higher. Furthermore, when a large number of such light-emitting elements are arranged in the arrangement shown in Figure 4, it is possible to arrange approximately 1.3 times as many elements per unit area as compared to conventional light-emitting elements. . Furthermore, since only the vertical relationship of the elements needs to be taken into account, the arrangement thereof is extremely simple compared to the elements shown in FIG. Furthermore, the discharge sustaining voltage of each discharge space was uniform, and no unevenness in brightness occurred.

As described in detail, the present invention provides a fluorescent lamp in which the lamp arrangement on the screen is extremely simple, the ratio of the light emitting area to the lamp area is large, high brightness is obtained, and there is no uneven brightness. It is something that can be done.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a fluorescent lamp according to an embodiment of the present invention, FIG. 2 is a front view of the same, FIG. 3 is a chromaticity diagram showing the region of emitted light color of the fluorescent lamp according to the present invention, The figure shows an example of arrangement when the fluorescent lamp according to the present invention is used for color image display, and FIG. 5 is a diagram for explaining a conventional fluorescent lamp. 1... Airtight container body, 2... Front plate,
3... Hole, 4... Electrode filament housing, 5... Partition wall, 6a+eb, 6c
+ 7a, 7b+ 7cs ---Discharge space, 8... Hole, 9... Electrode filament, 14a+14b+ 14c+ 15 al
15 b+ 15 c”・”・Electrode. Name of agent: Patent attorney Shigetaka Kurino and 1 other person τ〈0 victory? side 8) li cry 4-吋(7)

Claims (1)

[Claims] An airtight container is formed from a rectangular parallelepiped airtight container body having a translucent front plate and an electrode filament storage portion integrated into the bottom surface of the airtight container body, and a lattice-shaped partition wall is provided within the airtight container body. A plurality of discharge spaces are formed by forming a plurality of discharge spaces, and a hole is independently provided in the center of the bottom of the airtight container for communicating each discharge space with the space of the electrode filament storage part, and The provided electrode filament is arranged in a direction in which the axis of the electrode filament is orthogonal to the axis of the discharge space, and
An electrode is provided at the end of each discharge space far from the hole,
A plurality of picture elements are formed by forming a plurality of discharge paths between the electrode filament and each electrode, and applying a phosphor to a portion of the airtight container body that becomes each discharge path. fluorescent lamp.