DE8431386U1 - Adapter for a single-ended low-pressure discharge lamp - Google Patents

Description

Patent Trust Company

for electric light bulbs mbH. . Munich

Adapter for a single-ended low-pressure discharge lamp

{The innovation concerns an adapter for a one-sided

capped low-pressure discharge lamp, the base of which a cylindrical .guide pin and at least has two contact pins, and the adapter consists of a two-part housing with one used for incandescent lamps There is a base that has a mounting plate within the housing and the one that receives the contact pins Contains mating contacts, and on the upper part of the housing receptacles for the guide pin and the contact pins are provided.

Adapters that allow discharge lamps, especially small fluorescent lamps, to be connected directly to a

{ enable luminaire intended for incandescent lamps

known in various embodiments. As a DE-GM 82 33 763 is an example of this. Here, there are two single-capped compact fluorescent lamps with a pin base on each one a wiring and ignition device holding body mounted in sockets. The shapes shown show however, it has a large width, so that the adapter cannot be used in every light and the insert possibilities are limited accordingly.

: 25 The task of the innovation is to provide an adapter for a

'To create a single capped fluorescent lamp ₉ the

has a compact design, is easy to assemble and the safe operation of the fluorescent lamp guaranteed.

The adapter for a single-ended low-pressure discharge lamp with the features mentioned in the preamble of the main claim is characterized by that the mounting plate is the receptacle for the guide pin at least partially surrounds and the mating contacts are attached directly to the mounting plate. The mating contacts are resilient, the contact pin is two-sided surrounding contact lugs formed. Furthermore, the mating contacts are for fastening on the mounting plate provided with fastening lugs and with contact lugs for electrical contacting of the mounting plate. In this way, the lamp is mechanically supported by the top of the two-part adapter while the electrical contact is made separately from the upper part via the mating contacts on the mounting plate, which in turn is fastened between the lower part and the upper part of the adapter. On the mounting plate is also the ballast and ignition device for the Lamp operation mounted. Conventional, inductive devices are suitable for this, but because of their electronic devices are often preferred because of their lower weight and higher luminous efficacy.

The innovation is shown below on the basis of three figures explained in more detail:

Figure 1 shows a section through an adapter according to the innovation

Figure 2 shows an embodiment of a contact element in detail

Figure 3 shows a further embodiment of a contact element

The adapter 1 of FIG. 1 consists of an upper part 2 and a lower part 3 ″ which are non-detachably attached to one another by means of a snap connection. A cylindrical receptacle k is molded onto the upper part 2, in which a guide pin 5 of the base 6 of a fluorescent lamp 7 is inserted. The guide pin 5 is provided with retaining lugs (not visible), behind which snap springs 8 engage and thus mechanically hold the base 6 of the lamp 7 in the receptacle 4. The upper detached part of the receptacle 4 is provided with receptacles 9 through which the contact pins 10 of the base 6 protrude into the inner part of the adapter 1.

Between the lower part 3 and the upper part 2 of the adapter

ters 1, a mounting plate 11 is fastened by means of clamping, on which the ballast and ignition device 12 is mounted. An inductive ballast with starter or an electronic ballast is required for this equally suitable. In the present embodiment the mounting plate 11 is a circuit board on which the components of a high frequency ballast are arranged. This offers the advantages of a higher light output of the lamp as well as compared to one conventional ballast significantly reduced weight. Furthermore, in the mounting plate 11 Contact elements 13, 13 'let in and fastened there by means of interlocking their fastening lugs 14, IV (Figures 2 and 3). The upper contact lugs 15, 15 'are initially bent at an acute angle to one another and then open up again to allow insertion the contact pins 10 to facilitate. Depending on the embodiment of the lamp, there are a total of two or four of these Contact elements 13, 13 * arranged on the mounting plate 11, a contact pin 10 of the fluorescent lamp 7 being assigned to each contact element 13, 13 ′. To the

Relief of the figure, however, is only one of these contact connections shown. The contact elements 13t 13 'are preferably made of nickel-plated spring bronze, On the one hand, a permanent spring effect and corrosion resistance and on the other hand the soldering of the contact lugs l6 (Figure 2) with the circuit board 11 to facilitate, unless a solderless electrical connection by means of resilient contact lugs 16 '(Figure 3) is preferred.

A base 17 is still attached to the lower area of the lower part 3, as is usually the case for incandescent lamps is used. A contact element 13 and the ballast and igniter 12 are electrical with the

Socket 17 connected so that the operation of the. Lamp 7

can be done via the adapter 1 directly in a lamp holder intended for incandescent lamps.

Wa / Mg

Claims (3)

Protection claims 1. Adapter for a single-ended low-pressure discharge lamp, whose base (6) has a cylindrical guide pin (5) and at least two contact pins (10), and the adapter (l) from a two-part housing (2, 3) with a base (17) common for incandescent lamps, eggs within the housing (2, 3) a mounting plate (11) and which the contact pins (10) receive Contains mating contacts (13, 13 '), and on the upper part (2) of the housing receptacles (k, 9) for the guide pin (5) and the contact pins (10) are provided, characterized in that the mounting plate (11) at least partially surrounds the receptacle (4) for the guide pin (5) and the mating contacts (13, 13 ') are attached directly to the mounting plate (ll). 2. Adapter according to claim 1, characterized in that that the mating contacts (13, 13 ') are resilient contact lugs (15 «1? ') That have the contact pin (10) enclose on both sides. 3. Adapter according to claim 1 and 2, characterized in that the mating contacts (13, 13 ¹ ) are provided with fastening lugs (14, 14 ') for fastening on the mounting plate (11). k » Adapter according to claims 1 to 3, characterized in that the mating contacts (13« 13 ') are provided with at least one contact lug (l6, l6 ¹ ) for contacting the mounting plate (ll).