JPH06119912A - Fluorescent lamp - Google Patents

Abstract

PURPOSE:To facilitate designing the base of a fluorescent lamp for installation in an image display device, wherein the lamp is a light emitting element having a plurality of picture elements for use in large-sized color image display, etc., by reducing the volume of the lamp. CONSTITUTION:The bottom surface of the body of an airtight vessel and an electrode filament accommodation part 4 are consolidated by a coupling member 16 having discharge space of a section area larger than that of the filament accommodation part. A plurality of discharge spaces in the vessel body 1 are in communication with the space in the filament accommodation part 4 through the discharge space in the coupling member 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. 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.

[0002]

2. Description of the Related Art The applicant has proposed a fluorescent lamp as shown in FIG. 3 as a light emitting device having a plurality of picture elements used in a large-sized color image display device (Japanese Patent Laid-Open No. 2-12984).
7 publication). In FIG. 3, the discharge spaces 6a, 6b, 6c
Forms one picture element, and the discharge spaces 7a, 7b, 7c form another picture element. As shown in FIG. 4, small holes 8 are independently provided at the center of the bottom surface of the airtight container body 1, that is, at one end of each discharge space. Storage part 4
Communicates with the space part of.

[0003]

However, according to the study of the inventor, when an attempt is made to form, for example, four picture elements based on the configuration shown in FIG. 3, the electrodes in the plane parallel to the bottom surface of the airtight container body 1 are formed. Since the volume of the filament accommodating portion 4 becomes large, as a result, the volume of the lamp in the rear portion of the airtight container body increases, and it becomes difficult to design the base portion for incorporation into the image display device. all right.

The present invention has been made to solve such a problem, and provides a fluorescent lamp which can be easily incorporated into an image display device by reducing the lamp volume in the rear portion of the airtight container body. Is.

[0005]

In order to solve such a problem, the fluorescent lamp of the present invention has an airtight container body having a translucent front plate, and an electrode filament housing provided on the bottom surface of the airtight container body. To form a plurality of discharge spaces by forming partition walls in the airtight container body, each discharge space in the center of the bottom surface of the airtight container body and the space portion of the electrode filament storage portion. A hole for communicating with each other is provided independently, and an electrode is provided at an end of each discharge space far from the hole, and a plurality of electrodes are provided between the electrode filament provided in the electrode filament accommodating portion and each of the electrodes. In the fluorescent lamp in which a plurality of picture elements are formed by applying a phosphor to the discharge path of the airtight container body and forming a discharge path in the airtight container body, the bottom surface of the airtight container body and the electrode filter are formed. Ment storage part is integrated through a connecting member having a discharge space part having a cross-sectional area larger than the cross-sectional area of the electrode filament storage part, and a plurality of discharge spaces in the airtight container body and the electrode filament storage part are integrated. The space portion is communicated with the discharge space portion of the connecting member.

[0006]

According to the present invention, since a connecting member having a discharge space having a cross-sectional area larger than the cross-sectional area of the housing is provided between the bottom surface of the airtight container body and the electrode filament housing.
It is possible to prevent the volume of the electrode filament accommodating portion from increasing, and it is possible to easily design the base portion for incorporation into the image display device.

[0007]

Embodiments of the present invention will be described below 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 Figure 1,
The fluorescent lamp of the embodiment of the present invention comprises a rectangular parallelepiped airtight container body 1 made of a ceramics container, a front plate 2 made of a glass plate sealed with a low-melting glass on the front surface, one end opened and the other end sealed. The electrode filament accommodating portion 4 made of a glass tube and the rear surface of the airtight container body 1 and the electrode filament accommodating portion 4 are integrated, and a discharge space portion having a cross-sectional area larger than the cross-sectional area of the electrode filament accommodating portion is formed. The lid-like connecting member 16 has an airtight container. The rectangular tip surface of the connecting member 16 is fixed to the bottom surface of the airtight container body 1 with a low melting point glass so that the hole 8 is covered with the connecting member, and the opening of the electrode filament accommodating portion 4 is formed in the connecting member 16. It is fixed with a low-melting glass in a hole provided in the center.

In the airtight container body 1, partition walls 5 are integrally formed in a lattice shape and provided with six discharge spaces 6a,
6b, 6c, 7a, 7b, 7c are formed. As shown in FIG. 2, small holes 8 are independently provided at the center of the bottom surface of the airtight container body 1, that is, at one end of each discharge space, and these discharge spaces connect the discharge spaces. Electrode filament housing 4 through the discharge space of member 16
It is in communication with the space of. Electrode filament storage part 4
Inside, an electrode filament 9 supported by two internal lead wires 10 is provided.

The two internal lead wires 10 are supported by a stem 11, to which external lead wires 13 are respectively connected. In addition, 12 shows an exhaust pipe. The electrodes 14a, 14b, 14c, 15a, 15 are provided at the ends farther from the hole 8, that is, at the other ends of these discharge spaces.
b and 15c are provided, and a plurality of discharge paths are formed between them and the electrode filament 9. Further, mercury and a rare gas are enclosed in the airtight container. Portions of the airtight container body 1 which become discharge paths, that is, the discharge spaces 6a, 6b, 6c, 7
A phosphor is applied to a, 7b, and 7c.

The picture element pitch having such a structure is 14
The fluorescent lamp according to the embodiment of the present invention, which has a size of mm, has a hermetically sealed container main body as compared with a conventional fluorescent lamp in which a connecting member 16 having a discharge space portion having a cross-sectional area larger than the cross-sectional area of the electrode filament housing portion 4 is not provided. The lamp volume of the rear part of 1 is 19
It was confirmed that% could be reduced. It was also confirmed that when the pixel pitch was 18 mm, it could be reduced to 17%.
In all of these cases, there was no change in other characteristics such as the discharge sustaining voltage.

Further, although the fluorescent lamp of the above-mentioned embodiment has two picture elements, the same effect can be obtained with four picture elements.

[0013]

As described above, according to the present invention,
Since the volume of the lamp in the rear part of the airtight container body can be reduced as compared with the conventional case, it is possible to provide a fluorescent lamp in which a base portion for incorporation into an image display device can be easily designed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a fluorescent lamp according to an embodiment of the present invention.

[Figure 2] Similarly, a front view

FIG. 3 is an exploded perspective view for explaining a conventional fluorescent lamp.

[Figure 4] Similarly, a front view

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Airtight container main body 2 Front plate 3 Hole 4 Electrode filament accommodating part 5 Partition wall 6a, 6b, 6c, 7a, 7b, 7c Discharge space 8 hole 9 Electrode filament 10 Internal lead-in wire 11 Stem 12 Exhaust 13 External lead-in wire 14a, 14b, 14c, 15a, 15b, 15c electrode 16 connecting member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Yamamoto 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electronics Industrial Co., Ltd.

Claims (1)

[Claims] 1. An airtight container body having a translucent front plate and an electrode filament accommodating portion provided on the bottom surface of the airtight container body to form an airtight container, and a plurality of partition walls are provided in the airtight container body. A discharge space is formed, and a hole for communicating each discharge space with the space of the electrode filament accommodating portion is independently provided in the central portion of the bottom surface of the airtight container body, and the one farther from the hole of each discharge space. An electrode is provided at an end portion of the electrode filament, a plurality of discharge paths are formed between the electrode filament provided in the electrode filament accommodating portion and each of the electrodes, and fluorescence is provided at a portion which becomes each discharge path of the airtight container body. In a fluorescent lamp in which a plurality of picture elements are formed by applying a body, the bottom surface of the airtight container body and the electrode filament accommodating portion have a cross-sectional area larger than that of the electrode filament accommodating portion. The plurality of discharge spaces in the airtight container body and the space portion of the electrode filament accommodating portion are integrated with each other via the connection member having the discharge space portion, and communicate with each other through the discharge space portion of the connection member. A fluorescent lamp characterized in that.