DE2949498C2 - Fluorescent lamp with ballast housed in a removable adapter - Google Patents

Description

1. the base (25) on the glass bulb (4) of the Fluorescent lamp from a central contact (27) and at least two on the cylindrical outline 1 '. the base (25) attached side contacts (28) with retaining lugs (28 '),

2. the adapter socket (23) with a resilient center contact (32) and with the side contacts (28) has corresponding, concealed, lower side contacts (33) and

ο Λ'.η ki «l * anorAn / Ofi'l AttrrJrt Ancnphmunopn in

j. UH _- . ■ ittltVlluävii y »rv β « »%» · «» ■■. · * «.. · ■» ... ·. —-. Q - .. ...

the wall of an insulating sleeve (24) can be inserted and turned into a conductive one by turning it slightly Connection to the side contacts (33) and to rest on the edges (34) of the sleeve (24) are bringable.

2. Fluorescent lamp according to claim 1, characterized in that one of the contact protection completing insulating slat (30) provided with a central bore is built into the adapter (5)

35

The invention is based on a fluorescent lamp according to the preamble of claim 1.

Such a lamp is known from US-PS 41 73 730 and has a removable, rotating body trained adapter. in which the ballast is housed. The fluorescent lamp is connected to the adapter by means of a pin base connection, the other end to one Threaded connection is provided, which allows screwing into an existing lamp socket. In the The mentioned publication primarily describes the solution to the electrical problems of such lamps, without taking sufficient account of the applicable safety regulations.

The purpose of the present invention is to use the energy-saving fluorescent lamps, especially in Apartments have a very large number of lights that are provided with sockets for general service lamps are to be made suitable. As a result, fluorescent lamps are intended to be used to a considerably greater extent be that despite the often limited space in conventional lights in the screw base existing lights can be used. The achievement of this goal has so far been achieved, among other things with the "ballast" designated device, which apart from the task of initiating the Ignition is also used to limit the current in the discharge process in the actual lamp. Of the The space requirement of the previously known ballasts was contrary to the stated purpose. The transition to electronics, however, leads to significantly smaller miniaturized ballasts.

The stated purpose is based on the one hand on mass production of the ballast combined in an adapter and on the other hand, the special observance of all safety regulations.

It is true that the lamp unit known from DE-OS 28 35 183 should also be used instead of previously used in household lamps existing light bulbs can be used. For this reason there is at the end of the frame Lamp unit, among other things, an Edison thread as well as an alternative between lamp and ballast Snap connection has been proposed. A solution that is regularly used in the constructive work-through However, the resulting difficulties are by no means indicated

Finally, it is known from US-PS 41 12 336 a component serving as an adapter directly into the cavity a lamp socket before screwing in the fluorescent lamp. This type of adapter installation however does not meet the valid safety regulations.

The object of the invention is to provide a lamp unit that can be exchanged for conventional incandescent lamps with special attention to the safety regulations for the separate ballast to develop.

This object is achieved according to the invention by what is stated in the characterizing part of claim 1 Features kissed

The adapter, which is advantageously designed with a view to mass production, satisfies all safety regulations. Contact protection is provided both with the adapter screwed into the existing socket and present between this and the actual fluorescent lamp connected to the ballast.

Furthermore, the knowledge is taken into account that the luminous part of a fluorescent lamp is always the Wear part is essential during the actual electrical part, especially the ballast has a longer lifespan. After the fluorescent lamp has burned out, jeti_: only needs the glass part to be replaced. The most expensive part of the new type of fluorescent lamp, namely the miniaturized one Ballast does not generally need to be replaced.

An additional improvement in contact protection is provided by that described in claim 2 Measure achieved. An embodiment of the invention is shown in the drawing and is in Described in more detail below. The drawing shows a screwed into a standard socket Adapter in the vertical central longitudinal section as well as a fluorescent lamp connected to the adapter. It will hetont that appropriate design of the electronic part and arrangement of the connections between adapters and glass bulbs, both high-pressure and low-pressure discharge lamps can be used.

In the drawing, 1 generally denotes a fluorescent lamp from which the actual The glass bulb 4 forming the light source and the ballast 3 receiving and the glass bulb 4 supporting adapter 5 consists. Glass bulb 4 and adapter 5 are connected via a connecting device 6 releasably connected to each other. The adapter 5, for its part, points towards the lamp socket 9 here Screw base 2, which is provided with Edison thread.

Both the screw base 2 and the connecting device 6 connect the parts to which they

are assigned, both mechanically and electrically.

The fluorescent lamp 1 formed from the glass bulb 4 and adapter 5 is in a commercially available, per se for General service lamps specific lamp socket 9 by means of both the socket body 10 and the adapter 5 located Edison thread screwed in. This type of connection is only mentioned as an example. Essential is only that the adapter 5 with the lamp socket 9 via that connection mechanically and is electrically connected, which is in the country concerned or be: the majority of here considered needs for general service lamps in general Applies to the example described (assumed for AC operation is) lead into the socket body 10 each a pole wire 11 and a zero point wire 12, these wires lead to contact springs 14 and 15 by means of clamping screws 13. Of these, the contact spring 14 is with one Center contact 22 and the contact spring 15 with the screw contact 21 of the adapter 5 in conductive Link. The weight of the adapter 5 together with the parts connected to it is borne by the screw contact 21 a threaded part 16 protrudes in the lamp socket 6.

The adapter 5 is generally designed as a body of revolution and has an insulating housing 20 which is in the essentially of two cylindrical parts with a transition area 19 to the socket body 10 there is transition area 19 and adapter socket 23 are designed to be safe to touch. Neither when inserting Live parts are still being touched when removing the actual lamp or adapter possible.

The screw socket end of the adapter 5 receives the actual ballast 3 and carries it on The circumference of the screw contact 21 and - opposite the J5 central contact spring 14 - the center contact 22. The The shape of the interior space in the adapter is of course determined by the electronic parts to be accommodated.

The detachable connection 8 is shown here as a bayonet design and is structured as follows:

The base 25 is cemented to the glass bulb 4 in the usual way and is, as shown in the drawing clearly shows no more complex than the base of a general service lamp. The essential components of the base 25 are an insulating body 26, a center contact 27 and side contacts provided with retaining lugs 28 ' 28.

In the case of the adapter 5, these parts correspond to an insulating plate 31, which also fulfills holding tasks Resilient central contact 32 and resilient side contacts 33 housed in a safe way Side contacts are safe to touch behind the walls of the sleeve 24. The contact protection is also caused by an insulating plate 30 provided with a central bore.

The number of side contacts 28 and 33 is selected according to the respective lamp type

To insert a glass bulb 4 into the adapter 5, the flags of the side contact 28 are guided through in Ausnenmungen not shown in the drawing in the Sleeve 24 so far in until the resilient center contact 32 is slightly pretensioned Rotation brings the flags mentioned to rest on one edge 34 in the sleeve 24 and at the same time to Contact with the springy side contacts 33.

According to the example shown, the detachable connection 8 is, as described above, a bayonet connection designed. Alternatively, however, the glass bulb 4 can also have a pin base. Here, metallic pins with a sufficiently large cross-section are inserted directly into the lamp bulb melted down. To establish the clamping connection with the adapter, this has contact pieces that are in the Cross-section approximately have the shape of a capital. This variant has the advantage of even greater simplicity.

1 sheet of drawings

Claims (1)

Patent claims: 1. Fluorescent lamp with ballast housed in a removable adapter, the Adapier is designed as a body of revolution that accommodates the miniaturized ballast and an in a standardized Leuehteaaufnahme screw-in thread as well as the one provided with a base Fluorescent lamp has an insertable connection, characterized by the Combination of features that