Illumination – Light source and modifier – Ionized gas or vapor light source
Patent
1998-05-11
2000-06-20
Spyrou, Cassandra
Illumination
Light source and modifier
Ionized gas or vapor light source
362226, 362375, 439239, 439375, 439617, 439753, 439619, 439140, 439141, 439337, F21K 2700
Patent
active
060769416
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a connector assembly, for making contact with a gas discharge lamp, having a housing made of a dielectric material, having a central contact and an outer contact.
2. Summary of the Prior Art
In order to make contact with gas discharge lamps, the gas discharge lamp is plugged into a housing and turned. Two lugs on the base of the gas discharge lamp engage behind a bead on the housing and secure it. An outer contact and a central contact are required for making contact with the gas discharge lamp. Since high voltage is required for operating these lamps, it is important that this voltage is not already present across the contacts when a gas discharge lamp has not yet been inserted, in other words that it is ensured that a person cannot reach into a holder for such a lamp and be injured.
SUMMARY OF THE INVENTION
From WO 87/04867 a safety lamp holder for receiving a bayonet bulb is known. In this lamp holder structure a rotatable sleeve is used in combination with a switching device for interrupting the electrical circuit. A contact carrier with a contact is mounted within a body which defines slots for the bayonet pins of the light bulb, the contact carrier being movable relative to the body between first and second positions. Contact to the terminal pins is made in one of the positions and in the other position there is no contact made to the terminal pins.
From GB 14 81 110 a safety device for an electrical lamp holder is described. The lamp is screwed into the lamp holder and by being inserted moves a plastic part which interrupts the contact of the lamp contacts to the terminals. This arrangement may be also used with high voltages.
SUMMARY OF THE INVENTION
The object of the invention is to specify a connector assembly, for making contact with a gas discharge lamp, which is safe in operation even in the absence of the gas discharge lamp and is proof against a voltage of 1000 V.
The object is achieved by means of an assembly having the features of patent claim 1. Advantageous developments are specified in the subclaims.
A connector assembly, for making contact with a gas discharge lamp, is specified which has an integrated switch.
The use for a gas discharge lamp is particularly advantageous. The switch ensures that high voltage is present across the contacts of the holder only when the gas discharge lamp is inserted. This can be achieved by providing, in the housing of the holder, a rotatable sleeve which is rotated by at least one of the lugs on the outer periphery of the base of the gas discharge lamp. On this rotatable sleeve, it is possible to provide a tongue by which an electrical circuit is interrupted or closed again.
Such an arrangement with a rotatable sleeve additionally oversees that the gas discharge lamp is screwed into the holder and secured there, rather than just being plugged into said holder.
It is particularly important for the switch provided in the arrangement to be proof against a voltage of 1000 V. This can be achieved, by virtue of the fact that the tongue which is fastened to the rotatable sleeve and is produced from a dielectric material is brought between two parts of the electrical circuit. It is particularly advantageous for parts of the electrical circuit to be of a resilient design in order to facilitate the introduction of the tongue between the spring and the further contact.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 shows a partial view with a partial cross section of a base of a gas discharge lamp;
FIG. 2 shows a plan view of an assembly according to the invention;
FIG. 3 shows a section according to the section line DD in FIG. 2;
FIG. 4 shows a view from below of the assembly according to the invention without the cover having been put on;
FIG. 5 shows a section along the section line CC in FIG. 2;
FIG. 6 shows a section along the section line AA in FIG. 2;
FIG. 7 shows a section along the section line BB in FIG. 2;
FIG. 8 shows a diagrammatic illustration of the sleeve;
FIG. 9 shows
REFERENCES:
patent: 4768966 (1988-09-01), Doherty
Hass Jurgen
Herth Edgar
Boutsikaris Leo
Spyrou Cassandra
The Whitaker Corporation
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