JPH0442778B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The inventive incandescent lamp will be described in accordance with the following items.

A. Field of industrial application B. Outline of the invention C. Prior art [Figure 7] D. Problem to be solved by the invention E. Means for solving the problem F. Example a. Glass bulb [Figures 1 to 4] ] b Holding plate [Figures 1 to 4] c Base part c-1 Base body [Figures 1 to 6] c-2 Support pin [Figures 1 to 3, 6
Figure] c-3 Contact [Figures 1 to 3, 5
Figures, Figure 6] d Connection of glass bulb and base [Figures 1 to 4] G Effects of the invention (A. Field of industrial application) The present invention relates to a novel incandescent light bulb. For more information,
An incandescent light bulb with a synthetic resin cap body, which is designed to prevent the filament from being misaligned in the direction perpendicular to the axis of the glass bulb when attaching the glass bulb to the cap body, and to The object of the present invention is to provide a new incandescent light bulb that facilitates the connection between the contacts of the connector section provided on the main body and the external lead wires led out from the glass bulb.

(B Summary of the Invention) The incandescent light bulb of the present invention has three or more support pins protruding from the base body, and an insertion hole through which the support pins are slidably inserted is formed in the holding plate holding the glass bulb. , the support pin is inserted into the insertion hole and the holding plate is welded to the support pin, so that relative rotational movement between the holding plate and the base body is completely prevented, and thereby the base body prevents the filament from being misaligned in the direction perpendicular to the axis of the glass bulb when attaching the glass bulb to the
Further, a plurality of contacts are provided on the base body, one end of which is located in the connector portion and the other end of which protrudes near the support pin, and external lead wires led out from the glass bulb are connected to the other ends of these contacts. Therefore, the connection work between the connector part and the glass bulb is facilitated.

(C. Prior Art) [Figure 7] An incandescent light bulb having a base body made of synthetic resin has been proposed. An example of such an incandescent light bulb is shown in FIG. This incandescent light bulb a is shown in US Pat. No. 4,412,273.

b is a base body made of synthetic resin, and terminals c, c, c are protruded from the rear end thereof. Further, a cylindrical metal tube d is fixed to the front end of the base body b, and welding pieces e, e,
...is installed protrudingly.

Reference numeral f denotes a metal cap holding a glass bulb g, which is slidably fitted into the metal tube d.

In order to align the filament h enclosed in the glass bulb g, the cap body f is slid against the metal tube d to adjust the positional relationship between the filament h and the cap body b. Once the positional relationship is determined, weld pieces e, e,
... and the cap body f are fixed by spot welding or the like.

(D) Problems to be Solved by the Invention In the conventional incandescent light bulb a described above, its structure makes it possible to adopt the base body b made of synthetic resin. There is a problem that the filament h is easily misaligned in the orthogonal direction.

That is, the metal cylinder d fixed to the base body b and the cap body f holding the glass bulb g are connected by fitting their cylindrical parts to each other, and are slidable in the axial direction. is being used. Therefore, such a fitted state also allows mutual movement in the rotational direction, which may cause the filament h to shift from its normal position in the rotational direction.

(E. Means for Solving Problems) In order to solve the above-mentioned problems, the inventive incandescent light bulb has three or more support pins protruding from the base body and supports the glass bulbs on the holding plate. An insertion hole is formed through which the pin is slidably inserted, and the support pin is inserted into the insertion hole to weld the holding plate to the support pin, one end of which is located in the connector portion and the other end of the support pin. A plurality of contacts protruding nearby are provided on the base body, and external lead wires led out from the glass bulb are connected to the other ends of these contacts.

Therefore, in the inventive incandescent light bulb, since the insertion hole of the holding plate holding the glass bulb is inserted into the support pin protruding from the base body, the holding plate is inserted in the direction perpendicular to the axial direction of the glass bulb. Therefore, the position of the filament in the direction perpendicular to the axial direction of the glass bulb will not be disturbed. Furthermore, since the other end of the external lead wire led out from the glass bulb is connected to the other end of the contact protruding near the support pin, the connection work is extremely easy.

(F Example) Below, the details of the inventive incandescent lamp will be explained according to the illustrated example. In the illustrated embodiment, the present invention is applied to a halogen light bulb 1.

(a Glass bulb) [Figures 1 to 4] 2 is a glass bulb of the halogen bulb 1, one end of which is closed with a substantially flat pinch seal part 3, and the other end of which is closed with an exhaust part 4, making it airtight. The inside is filled with an inert gas and a specified halogen.

5, 5 are lead wires, the middle part of which is held in the pinch seal part 3 so as to pass through it in the axial direction, and the part 5 inside the glass bulb 2
The portions a and 5a are internal lead wires, and the portions 5b and 5b led out from the pinch seal portion 3 are external lead wires. And internal lead wires 5a, 5
A filament 6 is stretched between the tips of a.

(b Holding plate) [Figures 1 to 4] 7 is a holding plate for holding the glass bulb 2 and connecting it to the base body described below,
It is made of a metal plate.

The holding plate 7 is formed by integrally forming a metal band 8 and connecting plates 9, 9 and 10.

The metal band 8 is the pinch seal part 3 of the glass bulb 2
It is bent so as to form a substantially rectangular shape so as to be wrapped around the periphery, and connecting pieces 8a, 8a are formed at the portions where both ends meet.

Then, the metal band 8 is wrapped around the pinch seal portion 3 of the glass bulb 2, and in this state, the connecting piece 8
a and 8a are joined together by spot welding or the like. In this way, the metal band 8 is attached to the pinch seal portion 3.
Fixed.

The connecting plates 9, 9, and 10 are all provided along the rear edge of the long side of the metal band 8, that is, the edge on the opposite side to the side where the glass bulb 2 is located.

The connecting plates 9, 9 are connecting pieces 8 of the metal band 8.
The other connecting plate 10 is bent from the rear end edge of the long side of the metal band 8 opposite to the long side where the connecting pieces 8a, 8a are located. It is bent outward at a substantially right angle.

Then, one piece each on the connecting plates 9, 9,
Two insertion holes 11, 11, . . . are formed in the connecting plate 10 at intervals, and each insertion hole 1
The opening edges of 1, 11, . . . are slightly raised toward the front and are formed into a short cylindrical shape.

(c cap part) 12 is a cap part, and the cap body 1 is made of synthetic resin.
3, two contacts 14, 14, and
It consists of four support pins 15, 15, .

(c-1 Base body) [Figures 1 to 6] The base body 13 is molded from synthetic resin,
The glass bulb holding part 16 and the connector part 17 are formed integrally or integrally.

18 is a flange formed integrally with the glass bulb holding part 16, 19 is an annular groove formed on the front side of the flange 18, and an O-ring-shaped seal ring 20 is fitted into the annular groove 19. It will be worn.

The connector portion 17 is provided so as to protrude laterally from the rear end portion of the glass bulb holding portion 16, and has a receiving recess 21 opened laterally.

(c-2 Support pin) [Figures 1 to 3, 6
Figure) Three or more support pins 15, 15, ... protrude forward from the front end surface of the glass bulb holder 16 of the cap body 13, and their base ends are embedded in the front end of the glass bulb holder 16. has been done. Support pin 1
5, 15, . . . in the glass bulb holding portion 16, preferably by insert molding, for example.

The spacing between the support pins 15, 15, . . . is determined by the connection plates 9, 9 and 1 of the glass bulb holding plate 7
The spacing is the same as that of the insertion holes 11, 11, . . .

(c-3 Contact) [Figures 1 to 3, 5, 6] The contacts 14, 14 are made of conductive metal and are bent to form a substantially L-shape. .

Most of these contacts 14, 14 are embedded in the base body 13, for example, by insert molding, and one end portion 14a, 1
4a protrudes into the receiving recess 21 of the connector portion 17, and the other ends 14b protrude near the portion of the front end surface of the glass bulb holding portion 16 from which the support pins 15, 15, . . . are protruded. ing.

(d. Joining the glass bulb and the cap part) [Figs. 1 to 4] The glass bulb 2 is joined to the cap part 12 in the following manner.

That is, first, the support pins 15, 15, ... provided on the cap part 12 are inserted into the insertion holes 11, 11, ... formed in the connecting plates 9, 9, and 10 of the holding plate 7 holding the glass bulb 2. . Then, the support pins 15, 1 are connected to the insertion holes 11, 11, .
5,... to adjust the positional relationship between the flange 18 provided on the mouthpiece body 13 and the filament 6 sealed in the glass bulb 2, and once the positional relationship is adjusted, plastic arc welding, etc. The connecting plates 9, 9 and 10 of the holding plate 7 are attached to the support pins 15, 15, . . . by suitable welding means.
Fixed to.

With this, the glass bulb 2 is attached to the holding plate 7,
The base body 1 via the support plates 15, 15,...
Supported by 3.

The external lead wires 5b, 5b led out from the glass bulb 2 are connected to the other ends 14 of the contacts 14, 14.
b, 14b by spot welding or the like.

In the manner described above, the glass bulb 2 is coupled to the base portion 12, and the halogen light bulb 1 is formed.

(G Effects of the Invention) As is clear from the above description, the inventive white light bulb has a base body made of synthetic resin that holds a glass bulb in which a filament is sealed, and a connector portion that is attached to the base body. An incandescent light bulb integrally formed with three or more support pins protruding from the base body and holding a plurality of contacts with one end located in the connector part and the other end protruding near the support pins. , forming an insertion hole through which the support pin is slidably inserted in the holding plate holding the glass bulb, inserting the support pin of the base body into the insertion hole of the holding plate, and welding the holding plate to the support pin. Additionally, an external lead wire led out from the glass bulb is connected to the other end of the contact.

Therefore, in the inventive incandescent light bulb, since the insertion hole of the holding plate holding the glass bulb is inserted into the support pin protruding from the base body, the holding plate is inserted in the direction perpendicular to the axial direction of the glass bulb. Therefore, the filament cannot be displaced in a direction perpendicular to the axial direction of the glass bulb. Furthermore, since the other end of the external lead wire led out from the glass bulb is connected to the other end of the contact protruding near the support pin, the connection work is extremely easy.

In the above description of the embodiments, an example was shown in which the present invention was applied to a halogen light bulb, but it goes without saying that the present invention can also be applied to other incandescent light bulbs other than halogen light bulbs.

Furthermore, the method for providing the support pins and contacts on the base body is not limited to the insert molding shown in the embodiments, but may be provided by any other suitable method.

[Brief explanation of drawings]

FIGS. 1 to 6 show an example of the application of the present invention to a halogen light bulb,
Figure 1 is a perspective view, Figure 2 is a partially cutaway side view, and Figure 3 is a partially cutaway side view.
The figure is a side view seen from another angle, Figure 4 is a front view,
Figure 5 is a rear view, Figure 6 is a front view of the cap, and Figure 7 is a rear view.
The figure is a side view showing an example of a conventional incandescent light bulb. Explanation of symbols, 1... Incandescent light bulb, 2... Glass bulb, 5b... External lead wire, 6... Filament, 7... Holding plate, 11... Insertion hole, 13
...Base body, 14...Contact, 14a...
One end of the contact, 14b...other end of the contact, 15... support pin, 17... connector portion.

Claims (1)

[Scope of Claims] 1. An incandescent light bulb in which a cap body made of synthetic resin holds a glass bulb with a filament sealed therein, and a connector portion is integrally formed in the cap body, wherein the cap body has three or more connectors. protruding support pins, and holding a plurality of contacts with one end located in the connector portion and the other end protruding near the support pins, and the support pins are slidable on a holding plate holding a glass bulb. A support pin of the base body is inserted into the insertion hole of the holding plate, and the holding plate is welded to the support pin, and an external lead wire led out from the glass bulb is connected to the contact other than the contact. An incandescent light bulb characterized by a connection at the end.