JPH049734Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of the adapter welding structure of, for example, a miniature halogen light bulb.
A halogen light bulb A is attached to the ceiling surface 5 of the cylindrical adapter 2, a welding electrode insertion port 8 is opened in the ceiling surface 5, the adapter 2 is inserted into the housing 14, and the welding electrode is inserted from the welding electrode insertion port 8. The present invention relates to a welding structure for an adapter for a halogen light bulb, which is characterized in that the side surface of the adapter 2 and the side surface of the housing 14 are welded together using an electrode.

FIG. 3 shows a conventional halogen light bulb A, in which the halogen light bulb A is attached to an adapter 2, and the adapter 2 is inserted into the opening of the housing 14 and fixed by soldering. In this case, the solder adhesion was uneven, which caused the disadvantage of staining the exterior, and there were also accidents where the solder came off due to the heat radiated from the halogen bulb A when used in a space where the temperature easily rose. . In addition, since the side surface of the adapter 2 was simply cylindrical, moving the adapter 2 three-dimensionally would create a gap between the adapter 2 and the housing 14, making it difficult to adjust the three-dimensional adjustment position of the adapter 2 at the time of joining. It also had drawbacks such as the inability to maintain it.

The present invention was devised to address this problem, and its purpose is to enable three-dimensional adjustment of the adapter despite its miniature size, and to allow the fixed portion of the adapter and housing to be removed. To provide a welded structure for a halogen light bulb that does not appear in the dark, has a beautiful appearance, and has no fixed parts coming off due to heat.

An embodiment of the present invention will be described below. The housing 14 is a metal cylinder with an insulator 1 at the bottom.
6 is integrally molded, and this insulator 16
A central electrode 15 is implanted in the center. The flange 9 is disc-shaped and integrally protrudes from the opening edge of the housing 14, and is provided with a notch 13 corresponding to the groove 4 where the external lead rod 17 is welded. The adapter 2 has a cylindrical shape with an open bottom, and a long mounting hole 10 is formed in the ceiling surface 5. On the edge of the long mounting hole 10, vertical mounting tongues 11 for vertically mounting the halogen light bulb A are attached. Furthermore, an electrode insertion opening 8 is provided on the ceiling surface 5 of the adapter 2.
The side surface of the adapter 2 is bulged in an arc shape, and a groove 4 is provided in the vertical direction. The halogen light bulb A has the upper end of the glass tube 1 sealed, the lower end pinch-sealed, and the filament 3 arranged inside the glass tube 1. The pinch seal part 7 is held between the tongue pieces 11 for upright installation, and the adapter 2 It is erected in The filament 3 is supported by two internal lead rods 6, the internal lead rods 6 are welded to a molybdenum metal foil 12 embedded in the pinch seal portion 7, and the molybdenum metal foil 12 is also supported by an external lead rod. 17 is welded and led out.

Then, the halogen bulb A is attached to the adapter 2, one of the external lead rods 17 of the halogen bulb A is bent into a U shape, fitted into the groove 4 of the adapter 2, and spot welded. External lead rod 1
7 into the center electrode 15 of the housing 14, the adapter 2 is inserted into the housing 14, and then the adapter 2 is turned to an automatic machine and moved or tilted in the up, down, left, right, front and back directions to perform three-dimensional focusing. After that, the sides of the adapter 2 and the flange 9 are welded, then the external lead rod 17 inserted through the center electrode 15 is welded, and finally the protrusion of the external lead rod 17 is cut off. In this case, since the side surface of the adapter 2 is arcuate, even if it moves three-dimensionally as described above, there will be no large gap between the housing 14 and the adapter 2, and the adjustment position will remain unchanged. It can be welded. This halogen lamp is used by being attached to a small light fixture such as a flashlight.

As mentioned above, the present invention attaches a halogen light bulb to the ceiling surface of the adapter, inserts the adapter into the housing, and welds the side of the adapter and the side of the housing, so that the adapter can be attached three-dimensionally to the housing. The welding electrode can be moved, focused accurately, and fixed. Furthermore, a welding electrode insertion opening is provided on the ceiling of the adapter, and the welding electrode inserted from the welding electrode insertion opening can be used to connect the side of the adapter and the housing. Since the sides are welded together, the joints between the two do not show up on the outside unlike conventional methods, making it possible to create a superior appearance. Also, since no solder is used, the joints do not come off due to the radiant heat of the halogen bulb. Such accidents will not occur.

[Brief explanation of the drawing]

FIG. 1: A sectional view of an embodiment of the present invention, FIG. 2: A plan view of FIG. 1, and FIG. 3: A sectional view of a conventional example. A...Halogen light bulb, 1...Glass tube, 2...
Adapter, 3...Filament, 4...Concave strip, 5
... Ceiling surface, 6 ... Internal lead rod, 7 ... Pinch seal part, 8 ... Electrode insertion port, 9 ... Flange,
10... Elongated hole for attachment, 11... Tongue piece for upright installation, 12
... Molybdenum metal foil, 13 ... Notch, 14 ...
Housing, 15... Central electrode, 16... Insulator, 17... External lead rod.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A halogen light bulb is attached to the ceiling of a cylindrical adapter, a welding electrode insertion opening is provided in the ceiling, the adapter is inserted into the housing, and the welding electrode insertion opening is inserted into the housing. A welding structure for an adapter for a halogen light bulb, characterized in that the side surface of the adapter and the side surface of the housing are welded together using an inserted welding electrode. (2) The adapter welding structure for a halogen light bulb as set forth in claim 1 of the utility model registration claim, characterized in that the side surface of the adapter is bulged in an arcuate cross-section.