JPH01100844A - Mouthpiece for fluorescent lamp - Google Patents

Abstract

PURPOSE:To remove contact failure resulting from adhesion of bonding agent by providing a partition wall part erected apart from the inside face of a recess at a position that avoided a lamp lead wire insertion hole inside the recess for housing the end part of a lamp bulb, and forming plural vacant chambers opening upward of this partition wall part and partition part connecting the recess inside wall. CONSTITUTION:A partition wall part 24 is so erected as to avoid a lamp lead wire insertion hole 23 form the bottom of a recess 24 in the mouthpiece main body 21, and plural plateshaped partitions 25 same in height with partition wall part 24 are provided at its periphery. By this partition 25, plural vacant chambers 26 opening upward are generated between the inside wall of the recess 22 and the partition wall part 24. And the insertion boles 23 are so provided as to opposed to each other near the central part of the main body 21, i.e., on the side that the two recesses 22 approximate each other, and projected cylindrically from the bottom of the recess 22 and their upper parts are expanded only for the inside diameter in advance to facilitate insertion of the lead wire. Therafter, if a lead wire is put in the upper part of the vacant chamber 26 when applying adhesives 6 to the inside face of the recess, there never occur such a case that the adhesive 6 adheres to the lead wire 7.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a cap for a fluorescent lamp.

[Conventional technology]

FIG. 4 is a partially cut-away front sectional view showing a conventional fluorescent lamp base shown in, for example, Japanese Utility Model Application Publication No. 59-38157 attached to a lamp bulb, and FIG. The side view and FIG. 6 are the same bottom views. In the figure, (1)
(2) is a lamp bulb formed by bending a glass tube into a 0-shape, and (2) is a cap that accommodates the end of this lamp bulb (1) and is fixed to the lamp bulb (1) with adhesive (6). , (3J1. is an electrode contained in the end of the lamp bulb (1), (4) is a cap pin protruding from the bottom of the cap (2), and (5) is an electrode of the lamp bulb (1). This is a phosphor layer formed on the inner surface.Moreover, to explain the cap (2) in detail, the cap body (21) has two four parts (22) on the upper side that accommodate the ends of the lamp bulb (1). The concave part (2) is provided with an opening.
A lamp lead wire insertion hole (23) is formed so as to communicate with the lamp lead wire insertion hole (23), and a cap bottle (4) is provided below the lamp lead wire insertion hole (23) in a stone-like manner protruding from the cap body (21). It is being

A conventional fluorescent lamp cap is constructed as described above, and is fixed to the lamp bulb (1) with an adhesive (6), and power is supplied to the lamp through the cap pin (4) to light it as a fluorescent lamp, and it can also be used as a lighting fixture. It fits into a provided socket (not shown) to support the lamp bulb +1).

[Problem that the invention seeks to solve]

In the conventional fluorescent lamp cap as described above, the procedure for fixing the lamp bulb (1) and the cap (2) is to first apply adhesive (6) above the inner wall surface of the recess (22) of the cap body (21).
), and then insert the end of the lamp bulb (1) into the recess (22) from the upper opening. At that time, insert the lamp lead wire (not shown) into the lamp lead wire insertion hole (23).
The end of the lamp bulb (1) is housed in the recess [22] by pressing the adhesive (6) from above while inserting it into the recess [22]. Therefore, the adhesive (6) is attached to the lamp bulb (1).
In order to ensure that the adhesive strength between the lamp bulb (1) and the cap (2) is sufficiently satisfied as a product, it is necessary to There was a problem in that a large amount of adhesive (6) had to be applied, which increased the cost.

Furthermore, in order to increase the adhesive area between the lamp bulb (1) and the inner wall surface of the cap recess (22), it is necessary to apply the adhesive (6) all around the inner wall surface of the recess (22). When inserting the lamp lead wire into the lamp lead wire insertion hole (23), remove the adhesive (6) on which the lamp lead wire is applied.
) to form a film on the surface of the lamp lead wire, in the process of soldering the lamp lead wire to the lamp lead wire, the solder blends into the lamp lead wire and the lamp lead pin (4). There was also the problem of inducing poor electrical contact.

This invention was made to solve this problem, and when fixing the lamp bulb and the cap, it is possible to reduce the amount of adhesive and ensure sufficient adhesive strength while ensuring that the lamp lead wire does not adhere to the adhesive. An object of the present invention is to obtain a cap for a fluorescent lamp that can prevent contact.

[Means for solving problems]

The fluorescent lamp cap according to the present invention has a partition wall formed upright at a distance from the inner wall surface of the recess at a position avoiding the lamp lead wire insertion hole in the recess that accommodates the end of the lamp bulb. A plurality of empty chambers with an upward opening are provided by a partition portion that connects the partition wall portion and the inner wall surface of the recess.

[Effect]

In this invention, since the upper opening serves as a receiving portion for the adhesive when the lamp bulb is inserted into the recess, the adhesive is prevented from flowing out to the bottom side of the recess. Moreover, since the empty chamber has a sealed structure except for the upper opening, the adhesive that tries to enter the empty chamber through the opening will be blocked, and the empty space will be blocked. Invasion is prevented by increasing the air pressure inside the room. Therefore, the amount of adhesive used can be reduced. Furthermore, since the adhesive filled to close the opening bites into the periphery of the opening, the adhesive force is improved.

〔Example〕

FIG. 1 is a partially cutaway perspective view showing an embodiment of the fluorescent lamp base of the present invention, and FIG. 2 is a plan view thereof. In the figure, (24) is the concave part (2) of the cap body (2]).
2) It is a partition wall that is erected at a position away from the lamp lead wire insertion hole (23) from the bottom and is integrally formed with a distance of approximately 2 cm from the inner wall surface of the recess (22), and the recess (22) The depth is 18mm, the height is about 81mm, and the thickness is about IM
It is. (25) is the partition wall (24) and the recess (22)
These are a plurality of partition parts that are integrally formed so as to connect with the inner wall surface, and are formed in a plate shape so as to have the same height as the partition wall part (24). (26) is this partition part (25
) is a plurality of upper opening spaces formed between the inner wall surface of the recess (22) and the partition wall (24). Further, the lamp lead wire insertion holes (23) are provided in the vicinity of the center of the base body (21), that is, on the sides of the two recesses (22) that approach each other, and are opposed to each other. It protrudes into a cylindrical shape, and only the inner diameter of its upper surface is enlarged to facilitate the insertion of the lamp lead wire.

In the fluorescent lamp base configured as above,
Before inserting the lamp bulb (1) into the recess (22), when applying the adhesive (6) to the inner wall surface of the recess (22), it is necessary to apply the adhesive (6) to the upper part of the plurality of empty chambers (26). Then, apply adhesive (6) to the upper part of the lamp lead wire insertion hole (23).
), it is possible to prevent electrical contact failure caused by adhesion of the adhesive (6) to the lamp lead wire (7) during the operation of inserting the lamp lead wire (7).

FIG. 3 is a partially cutaway front sectional view showing the fluorescent lamp base of the present invention attached to a lamp bulb. A silicone adhesive (
6) will be pressed and flowed downward when the lamp bulb (1) is inserted into the recess (22), but the adhesive (
6) descends to the position where it closes the upper opening of the empty chamber (26), the air sealed inside the empty chamber (26) closes the upper opening of the empty chamber (26).
) Pressure is created inside. Due to this pressure, the adhesive (6) is prevented from further intrusion after slightly invading the upper part of the cavity, and flows toward the center of the recess (22) so as to bite the partition (24). Therefore, the adhesive (
The adhesive area (6) to the cap body (21) is larger (and the adhesive strength is stronger).Also, since the adhesive (6) does not fill the interior of the empty space (26), the adhesive used in the conventional example Adhesive (6) needs to be applied above the lamp lead wire insertion hole (23) because it is possible to obtain adhesive strength equal to or higher than that of the conventional example with approximately half the amount of (6). Therefore, the cost of the fluorescent lamp can be reduced.

In the above embodiment, the lamp bulb cap bent in a 0-shape was described, but the same effect can be expected even if the present invention is applied to a straight pipe-shaped or circular lamp bulb cap.

〔Effect of the invention〕 .

As explained above, the present invention forms a partition wall that stands up at a distance from the inner wall surface of the recess at a position avoiding the lamp lead wire insertion hole in the recess that accommodates the end of the lamp bulb; This structure has multiple upwardly opening spaces with a partition that connects the inner wall surface of the recess and the inner wall surface of the recess.This structure prevents electrical contact failure caused by adhesive adhering to the lamp lead wire, and reduces the amount of adhesive. However, since sufficient adhesive strength can be obtained, there is an effect that costs can be reduced.

[Brief Description of the Drawings] Fig. 1 is a partially cutaway perspective view of an embodiment of the present invention, Fig. 2 is a plan view of the same, and Fig. 3 is a lamp illustrating the fluorescent lamp base of the invention of B. FIG. 4 is a partially cutaway front sectional view showing a conventional fluorescent lamp base attached to a lamp bulb; FIG. 5 is a side view of the same; FIG. 6 is a bottom view of the same. In the figure, (1) is the lamp bulb, (21) is the base body, (22) is the recess, (23) is the lamp lead wire insertion hole, (24) is the partition part, (25) is the partition part, (2B)
) is vacant. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (2)

[Claims] (1) A base body having a recess in the upper part for accommodating the end of the lamp bulb, a lamp lead wire insertion hole provided to communicate with the recess, the lamp lead wire insertion hole being avoided in the recess, and A fluorescent lamp characterized by having a plurality of chambers with upward openings formed by a partition part standing upright at a distance from the inner wall surface of the recess and a partition part connecting the partition part and the inner wall surface of the recess. Usage cap. (2) Two recesses are arranged in parallel in the base body, and lamp lead wire insertion holes are provided in opposing walls of the respective recesses on the sides that approach each other.
Fluorescent lamp cap as described in section.