JPS63218117A - Fluorescent lamp - Google Patents

Abstract

PURPOSE:To make it possible to fix a base to a bulb securely, as well as to cover the connection of bulb members and to improve the appearance, by furnishing gearing projections at the base projecting to be engaged to the connections of the bulb. CONSTITUTION:At the inside of a bulb 11, bulb members 13 and 14, which have a bend bending in U-shape at each top, are arranged parallel on the horizontal surface, and the neighboring inside ends of the both bulb members 13 and 14 are linked and connected airtight each other by a connection 15,to form in approximately W-shape. At the both ends of the bulb 11, filaments are furnished, and at an electrical connection 26 at the lower side of the base 12, four connection pins 27, which are connected to the filaments furnished at the both ends of the bulb 11 through lead wires, are projected. The connection 15 of the bulb members 13 and 14 is geared with gearing projections 24 and 25 of the base 12 from both sides, fixing the base 12 to the bulb 11. Therefore, the base is fixed to the bulb securely to prevent its removal, and covered by the gearing projections to improve the apperance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a fluorescent lamp, in which a plurality of substantially U-shaped bulb members are joined together. The present invention relates to a lamp equipped with a bulb having a plurality of bends at its tip.

(Prior Art) In a conventional fluorescent lamp of this type, for example, as shown in FIG.
is the distal end side, and both ends 3.3 are the proximal end side, and a cap part 4 is fixed to this proximal end side, and the electrical connection part 5 to be connected to the socket is attached to the cap part 4 in the same horizontal plane as the bulb 1 surface. 1
is installed on the opposite side. The electrical connection portion 5 of the cap portion 4 is electrically connected to the filament provided at both ends 3.3 of the bulb 1, and the connection pin 6 connected to the socket is on the same horizontal plane as the surface of the bulb 1. In this case, a lll structure protruding toward the opposite side from valve 1 was adopted.

(Heat problem to be solved by the invention) In the conventional fluorescent lamp shown in FIG. the end of the valve 1 is the base part 4
Although the cap part 4 is securely fixed to the valve 1 and there is no problem, it is possible to form a substantially W-shape by combining a plurality of substantially U-shaped valve members. Fluorescent lamps that use bulbs tend to expose the joints at the ends of the bulb members, which can easily damage the appearance.Furthermore, because the bulbs are large, there is a problem in that the bulb and the base become unstable. Ta.

The present invention has been made in view of the above-mentioned problems, and it covers the joint of the valve member forming the valve having a plurality of bent portions on the distal end side, improves the outsideness, and securely attaches the mouthpiece to a relatively large valve. The present invention provides a fluorescent lamp that can be fixed.

[Structure of the invention]

(Means for Solving the Problems) The fluorescent lamp of the present invention has a plurality of bulb members each having a bent portion on the distal end side which is bent in the middle portion in a substantially U-shape. The valve includes a bulb having a filament at both ends, and a cap part provided with an electrical connection part fixed to both ends of the bulb and having a connecting pin connected to the filament, and the bulb is connected to the cap part. The device is characterized by a protruding engaging protrusion that is engaged with the portion.

(Function) In the fluorescent lamp of the present invention, the joint portion of the bulb that connects the plurality of bulb members is covered by the engaging protrusion of the base portion, so that the joint portion of the non-light emitting portion is not exposed and the base portion is securely attached to the bulb. Fixed.

(Embodiment) The configuration of an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

Reference numeral 10 is composed of a bulb 11 and a cap part 12 in which a fluorescent lamp rests. This bulb 11 has bulb members 13 and 14, each having a phosphor coating formed on the inside and one bent portion on the distal end side with a middle portion bent into a substantially U-shape, arranged in parallel on a horizontal plane. Adjacent inner ends of the members 13 and 14 are closely connected to each other at a joint 15 to form a substantially W-shape.

A filament (not shown) is disposed at both ends of the valve 11 formed at the outer ends of both valve members 13 and 14, and an exhaust portion 1 is disposed at both ends of the valve 11.
6.17 is formed.

The cap portion 12 fixed to the valve 11 is formed of a two-split case member 18.19 molded from an insulating material.
0 includes exhaust portions 16 at both ends of the valve 11 from the joint surface.
．． 17 and the fitting recess 21° 22, 2 for fitting the joint part 15
3 is formed, and both ends of the bulb 11 and the - section of the joint portion 15 are fitted into the fitting recesses 21, 22, and 23 and fixed with an adhesive. Further, the upper surface 20 to which the valve 11 is fixed to the base portion 12 has fitting recesses 21 and 22.
．． Valve member 13° 14 of valve 11 fitted to 23
Engagement protrusions 24 and 25 that engage with the joint portions 15 of the two are respectively provided in a protruding manner. Also, on the lower surface of this mouthpiece 12 are exhaust parts 16 and 17 of the valve 11 to which this mouthpiece 12 is fixed.
An electrical connection portion 26 is formed between the two, and four connection pins 27 connected to filaments provided at both ends of the pallet 111 by lead wires (not shown) protrude from this electrical connection portion 26. It is set up.

Next, the operation of this embodiment will be explained.

The joint portion 15 of the valve member 13.14 of the valve 11 is engaged with the engaging projections 24.25 of the mouthpiece 12 from both sides, and the mouthpiece 12 is securely fixed to the pallet 711, and the mouthpiece 12 is connected to the valve 11. The mine will be closed if it is no longer treated as such. The engaging protrusions 24.25 of the base portion 12 roughly cover the joint portion 15 of the bulb member 13.14 of the bulb 11 to improve the appearance and also provide a joint portion of the light emitting portion 31 from which the phosphor coating has been peeled off. Covers 15.

Furthermore, in the above embodiment, the electrical connection part 26 formed on the base part 12 has a structure in which the connecting pin 27 is protruded downward, but as shown in FIG. The exhaust part 16.1 of the valve 11 is adjacent to the upper surface and has the mouthpiece 12 fixed to the front surface in one direction.
A recessed electrical connection part 2G is formed between the valves 1 and 7, and a recessed electrical connection part 2G is formed in the electrical connection part 2G with t located at a rectangular corner position.
The four connection pins 27 connected to the filament provided at both ends of the base 12 by lead wires (not shown) are connected to the base 12.
It is also possible to fix it and protrude from the surface of the pallet 111 in the direction in which I8 stands upright. In this drawing, the electrical connection portion 26 is connected to the air portion 1 at both ends of the valve 11 to which the cap portion 12 is fixed.
6.17, and the connecting pin 27
Because it protrudes in a direction substantially perpendicular to the surface of the bulb 11, the size of the cap 120 can be shortened and the size can be reduced.
The number of non-light emitting parts is small, and when the fluorescent lamp body 10 is attached to a socket of a fixture, the mounting direction is in the direction of the surface of the fixture, making the mounting easy. A space for inserting the fluorescent lamp 10 into the socket from the longitudinal direction is not required, and the cap part 12, which is a non-light-emitting part of the fluorescent lamp body 10, is small, and the part that becomes a shadow together with the socket is reduced.

〔Effect of the invention〕

According to the present invention, the engaging protrusion of the mouthpiece engages with the joint of the valve formed by connecting a plurality of valve members bent in a substantially U-shape at the joint, so that the mouthpiece securely secures the valve. The joint part of the bulb member, which is fixed to the base and cannot be removed, and the phosphor coating has been peeled off, is covered by the engaging protrusion of the cap, improving the appearance and making the joint part of the bulb Since the phosphor is peeled off from the part, there is no problem in covering it with the engaging protrusion.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a fluorescent lamp showing one embodiment of the present invention, Fig. 2 is a front view showing a state in which one case member of the base portion of the same is removed, and Fig. 3 shows another embodiment. FIG. 4 is an exploded perspective view of a fluorescent lamp, and FIG. 4 is a front view of a conventional fluorescent lamp. 11... Valve, 12... Mouth part, 13.14... Valve member, 15... Joint part, 24.25... Engaging protrusion, 2
6... Electrical connection part, 27... Connection pin. precious("

Claims (1)

[Claims] (1) A bulb having filaments at both ends, in which adjacent ends of a plurality of valve members each having a bent part on the distal end side with a bent middle part bent in a substantially U-shape are connected at a joint part, and both ends of this valve are connected. and a cap part provided with an electrical connection part having a connecting pin fixed to the filament and connected to the filament, and an engaging protrusion protruding from the cap part to be engaged with a joint part of the bulb. Features fluorescent lamps.