JPS62143336A - Fluorescent lamp - Google Patents

Abstract

PURPOSE:To aim at compact construction of a lamp as a whole including its base, by joining two U-shaped glass tubes and fixing thereto, a base which has a socket engaging section projected along the diagonal line on a brim. CONSTITUTION:A lamp body 1 is made by joining two U-shaped glass tubes to make their surfaces opposing each other, while connecting the inner spaces of base sections 11, 12 on one side to each other through a connecting area 15 but hermetically sealing their inside from the outside. A socket engaging section 22 is provided along a diagonal line on a brim 21 with engaging projections 23 at both ends in the longitudinal direction and four base pins 24 are projectingly on the bottom. A base 20 is fixed with adhesive on an end plate 3 which makes the bottom of an luminous unit 1. By this construction, the base as well as the lamp body can be made in compact sizes while preventing the breakage of the lamp body and it is made possible to mount the lamp on a U-shaped fluorescent lamp socket.

Description

[Detailed Description of the Invention] [Industrial Application Denominator] The present invention relates to a fluorescent lamp having a base at one end of a lamp body having two U-shaped parts [Prior Art] One end of a bent glass tube Various single-cap type fluorescent lamps have been proposed in the past because the cap is not fixed to the lamp, and the lamp as a whole can be made more compact. In particular, U-shaped fluorescent lamps are widely used because they are relatively easy to manufacture and easy to use. Japanese Patent Publication No. 54-16437
Publication No. 3 shows a typical U-shaped fluorescent lamp and a lamp socket 1 that fits this lamp. That is, FIG. 6 is a perspective view of a U-shaped fluorescent lamp disclosed in Japanese Patent Application Laid-Open No. 164373/1983, in which the lamp body (1) is a glass tube bent into a U-shape. Both ends of 1) are fixed to a 1g common cap (20). The cap (20) has an oval shape, and has a cap pin (24) protruding from the lower surface opposite to the light emitting part (1), and engagement protrusions (23) at both longitudinal ends. And a lamp socket (30) to which this base (20) is attached.
As shown in FIG. 7, which is an exploded perspective view thereof, four cap accommodating parts (31) corresponding to the external shape of the cap (20) are provided, and at the bottom of the cap accommodating recess (31). A cap pin connection part (32) is provided, and a cap accommodating recess (32) is provided.
The engaging protrusions (
23) is provided.

By attaching the fluorescent lamps to the lamp sockets (30), they are electrically and mechanically coupled to each other.
They are designed to be able to respond sufficiently to any lighting direction without separating them from each other.

However, although the above-mentioned U-shaped fluorescent lamp is excellent in terms of ease of use, it is not sufficiently compact in terms of compactness.

FIGS. 8 and 9 show a fluorescent lamp disclosed in US Pat. No. 3,501,662, which is a more compact fluorescent lamp. That is, straight glass tubes (11), (12), which become four legs with closed tops,
(13) and (14) are sealed by joining so that the two U-shaped parts overlap and the insides are continuous to form a lamp body +11, and both ends of this lamp body (1) and Naru 2
A pair of electrodes (
2) and a cap (20) with four cap pins (24) protruding from the glass tubes (11), (12), and (1).
3) and (14) are fixed to the bottom end.

[Problem that the invention seeks to solve]

However, this USP 3.501.662 publication does not mention lamp sockets, so
Judging from the specifications and drawings, the lamp socket to which this fluorescent lamp can be electrically and mechanically connected is expected to be quite large in shape, and since the lamp has the above structure, it is difficult to attach or remove the lamp. It can be assumed that there is a problem in that when a force is applied that causes the two U-shaped parts to approach each other, the joints on the end sides of the legs are likely to break.

This invention has a lamp body that is more compact than that shown in the above-mentioned US Pat. It is an object of the present invention to provide a fluorescent lamp that can be attached to the above-mentioned U-shaped fluorescent lamp socket.

[Means for solving problems]

The fluorescent lamp according to the present invention consists of two U-shaped glass tubes that are superimposed and connected in series, and a rectangular flange corresponding to the external shape of the lamp body is attached to the bottom end side of the lamp body. and has a socket engagement part protruding along the diagonal line of the flange on the lower surface side of the flange and having four ferrule pins in the center and engagement protrusions at both ends in the longitudinal direction. This is what I did.

[Effect]

In the invention of Party B, the main body of the lamp has two U-shaped parts.
Stay in the 1+T circle. In other words, since the U-shape is further folded in half, it is more compact than a conventional U-shaped fluorescent lamp. The cap has a shape that corresponds to the external shape of the main body of the lamp, so there is no unnecessary overhanging part.
When attaching and detaching the matco lamp, the flange can be operated, so there is no need to apply large force to the lamp body, thereby preventing damage. Furthermore, since the socket engagement part of the base is provided along the diagonal line of the flange, it can be made larger than the length of one side of the flange, so it can be made to have the same shape as the base of a conventional U-shaped fluorescent lamp. It does not protrude from the flange, so the cap itself can be made more compact, and the U'4-
It can also be installed in sockets for type fluorescent lamps.

〔Example〕

An embodiment of the present invention will be explained based on FIGS. 1 to 5. In these figures, fil is the main body of the lamp, which is made up of two U-shaped glass tubes that overlap each other so that their surfaces face each other, and one leg (1
1) and (12) through the connecting part (15),
They are connected in series and airtight to the outside.

(2) is an electrode sealed to the end of the leg (141 (only one shown) on the other side; (3) is an electrode sealed to the end of the leg (141) on the other side;
) One common end plate made of ceramic that closes the end of the lamp body (11) is made of glass (41) to make the inside of the lamp body (11 airtight from the outside) and to provide mechanical strength to the lamp body (1). (5) is a sealed exhaust tube, (20) is a base made of synthetic VA cell, and the main body of the lamp [11
A substantially square flange (2I) corresponding to the external shape of the flange (2I), and a flange (2I) having the same shape as the cap (20) of the conventional U-shaped fluorescent lamp, on the lower surface of the flange (2]) on the opposite side from the main body of the lamp. A socket engaging portion (22) is integrally protruded.

This socket/engaging portion (22) is provided along the diagonal line of the flange (21), and is 1M long in both longitudinal directions.
An engaging protrusion (23) is provided on the bottom surface, and four base pins (23) are provided on the bottom surface.
24) is installed protrudingly. Also, this socket engaging part (
22) has a space inside, which serves as a housing part for the exhaust thin tube (5), and a passage for connecting a lead wire (not shown) led out from the electrode (2) to the base pin (24). It is said that

The base (20) configured in this way is fixed to the end plate (3), which is the bottom of the light emitting part (1), with an adhesive (not shown) to complete the fluorescent lamp.

Note that (6) is an integrated cover that covers the joint between the light emitting part (1) and the cap (20), and has the function of reinforcing the joint while improving the design.

Furthermore, in the present invention, the structure of the light emitting section (1) and the structure that connects the legs (]I) to (14) are not limited to the above embodiments.

〔Effect of the invention〕

As explained above, the present invention has a light-emitting part in which two U-shaped glass tubes are polymerized and connected in series, and the bottom part of the light-emitting part has a flange part having a rectangular shape corresponding to the outer shape of the light-emitting part. Furthermore, by fixing the cap with the socket engagement part protruding diagonally on the flange, the entire lamp including the cap can be made more compact, while still being able to maintain the size of the U-shaped fluorescent lamp socket, which has been widely used in the past. This makes it possible to attach the lamp to a U-shaped fluorescent lamp, creating compatibility with a U-shaped fluorescent lamp, and also preventing damage to the light emitting part, which has enormous practical value.

[Brief explanation of drawings]

Figures 1 to 5 show an embodiment of the present invention, where Figure 1 is a sectional view taken along line A-A in Figure 2, Figure 2 is a plan view, Figure 3 is a side view, and Figure 4 is a side view. is a front view, FIG. 5 is a bottom view, FIG. 6 is a perspective view showing a conventional U-shaped fluorescent lamp, and FIG. 7 is an exploded perspective view showing a socket used in the U-shaped fluorescent lamp shown in FIG. 6. 8 is a partially cutaway exploded view of a conventional single-ended fluorescent lamp having a 2g U-shaped portion, and FIG. 9 is a sectional view of FIG. 8. In the figure, (1) is the light emitting part, (2) is the electrode, (11)
, (12), (13), and (14) are leg parts, (20) is a cap, (21) is a collar part, (22) is a socket engaging part, (2
3) is an engaging protrusion, and (24) is a base pin. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] A lamp body in which two U-shaped glass tubes with electrodes sealed at one leg end are overlapped with each other and connected in series while maintaining airtightness to the outside, and fixed to the leg end of this lamp body. At the same time, a rectangular flange corresponding to the outer shape of the main body of the lamp, a flange protruding along the diagonal of the flange in the longitudinal direction, and four base pins protruding from the center, and both ends in the longitudinal direction. 1. A fluorescent lamp comprising: a base having a socket engagement portion provided with an engagement protrusion;