JPH047563Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Field of Application) The present invention relates to an improved structure of a light bulb with a base in which the glass bulb axis and the base axis of the light bulb are substantially perpendicular to each other.

(Prior Art) In a lamp with a base, a tungsten coil filament is built into a glass bulb, the end of the glass bulb is sealed, and a base is attached to the sealed part.The base is mainly apertured by a metal mold. Those formed by processing were generally used. For example, when the shape of the cap becomes complicated, as in the case of a light bulb for a car headlamp, the shape of the mold used to draw the cap also becomes complicated, which results in a disadvantage that the unit price of the cap rises. In addition, small, high-output halogen light bulbs are used in the above-mentioned automobiles, etc., and the above-mentioned halogen light bulbs reach high temperatures, so if solder is used to bond the base and the flange, heat conduction There were problems such as solder coming off.

Recently, a light bulb with a base has been developed in which the base of a light bulb for an automobile headlamp is made of plastic, and the glass bulb axis of the light bulb and the base axis are perpendicular to each other. This light bulb is relatively easy to mold, is not expensive, has a low temperature rise in the base, and is less likely to come off the solder, but the external leads of the bulb tend to short-circuit inside the base, and the external leads are pulled out to the base. The work was difficult.

(Problem to be solved by the invention) The invention prevents short-circuiting of the external leads within the cap of a light bulb with a cap made of plastic or the like, in which the glass bulb axis and the cap axis are perpendicular to each other. It is an object of the present invention to provide a light bulb with an improved structure that is easy to work with.

[Structure of the idea]

(Means for Solving the Problem) The present invention provides a base having a base having a side recessed hole into which the end of a glass bulb containing a tungsten filament is fitted, and a lower recessed hole into which a socket is fitted. A plurality of insertion holes for supporting external leads led out from the glass bulb are provided in the side recessed hole of the base of the light bulb, and the insertion holes are formed at different levels on the glass bulb side. The device is characterized in that a penetrating external lead is connected to a power supply terminal in the lower recessed hole.

(Function) The base-equipped light bulb of the present invention has a base part that is attached to the glass bulb and has a side recessed hole into which the end of the glass bulb containing the tungsten filament is fitted, and a lower recessed hole into which the socket is fitted. ing. An insertion hole through which an external lead led out from the glass bulb is inserted and supported is formed in the side recessed hole of the base, and the ends of the insertion holes on the glass bulb side are formed at different levels from each other. has been done.
Therefore, when attaching the glass bulb to the cap from the side recessed hole side of the cap, insert one external lead into the insertion hole close to the glass bulb, and then insert the other external lead using the external lead as a guide. By inserting the other glass bulb into the farthest insertion hole, insertion of the external lead into the insertion hole can be completed very easily. The external lead inserted into the insertion hole is led out through the insertion hole and is connected by caulking or welding to a power supply terminal attached to the lower recessed hole of the base.

(Example) The present invention will be described in detail below using examples shown in the drawings.

The figure is a front view of a halogen light bulb, which is an embodiment of the light bulb with a base of the present invention.

The tungsten filament 1 is connected to the inner leads 3, 3 supported by the bead support 2, and the outer leads 5, 5' electrically conductively connected to the inner lead 3 at the end of the glass bulb 4 are connected to the pinch seal part 6. It is sealed airtight. 7 is the sealed end of the exhaust pipe. A holder 8 is mounted and fixed at the end of the glass bulb 4, and the external leads 5, 5' and the sealing end 7 of the exhaust pipe are led out from the through hole of the holder 8. The glass bulb 4 with the holder 8 mounted thereon is fitted into the side recessed hole 10 of the base part 9, and the external leads 5, 5' are inserted into the insertion hole 1 of the guide 11.
2, 12' and is fixed to a reflector such as an automobile headlamp on the base part 9.
The holder 8 of the glass bulb 4 is fixed to the side concave hole 10 of the base part 9 by ultrasonic welding or adhesive 14, with the distance from . The lid 15 of the mouthpiece 9 has been removed at this point.
As shown in the figure, the insertion holes 12 and 12' of the guide 11 are formed at different levels on the glass bulb 4 side.
2, and the other external lead 5' is inserted into the insertion hole 1.
By moving the glass bulb 4 at a position where it is not inserted into the insertion hole 12' and inserting the external lead 5' into the insertion hole 12', the two external leads 5, 5' can be inserted into the insertion hole 12, 12 very easily. ′ can be inserted reliably. Next, the power supply terminal 1 is attached to the shelf board 17 in the lower recessed hole 16 of the base part 9.
External leads 5 and 5' are connected to 8 and 19 by welding or caulking. The external lead 5 is bent at a bending point 20, and the power supply terminal 18 is located at the rear of the power supply terminal 19 in the figure, and the end piece at the power supply terminal position 18 overlaps the end piece 21 of the power supply terminal 19, as shown in the figure. do not. 22 and 33 indicate the above connection points. 24
and 25 are keys that guide the fitting of the base portion 9 and the socket, respectively. After that, the lid body 15
Attach the cap to the position shown in the figure and glue it to the cap part 9.

[Effect of idea]

As detailed above, the light bulb with a base of the present invention has an external lead insertion hole such as a guide formed in a recessed hole on the side of the base with the glass bulb side formed at different levels from each other. Light bulbs with caps that are almost perpendicular to the axis can be manufactured easily with less man-hours, preventing short circuits between the external leads, and since the temperature rise at the cap is relatively small, it is possible to easily connect the external leads to power supply. It has an excellent effect of preventing burnout of terminals and other connecting parts, and no solder coming off.

In addition, in the embodiment, the structure in which the power supply terminal and the external lead are connected in a perpendicular, crossing manner is described, but the structure is not limited to this, and the connection may be made at an angle. Even if the bulb is connected by welding, caulking, or soldering, the bulb is inserted into the recessed hole on the side, so the solder does not come off due to temperature rise. Further, the structure of the cap part is not a structure to which a lid is attached as in the embodiment, but may be a structure in which a through hole is provided in the side surface of the cap part, for example.

[Brief explanation of the drawing]

The figure is a partially cutaway front view of an embodiment of the light bulb with base of the present invention. 1... Tungsten filament, 4... Glass bulb, 5, 5'... External lead, 9... Base part, 10... Side recessed hole, 12, 12'... Insertion hole,
16... lower recessed hole, 18, 19... power supply terminal.

Claims (1)

[Scope of utility model registration request] A glass bulb having a built-in tungsten filament; a mouthpiece having a side recessed hole into which the end of the glass bulb is fitted; and a lower recessed hole into which the socket is fitted; A plurality of insertion holes are provided in the recessed hole to support external leads led out from the glass bulb, and the insertion holes are formed at different levels on the glass bulb side, and the external leads passing through the insertion holes are inserted into the lower recessed hole. A light bulb with a base, which is connected to a power supply terminal inside the bulb.