DE1947199U - GAS AND / OR VAPOR DISCHARGE LAMP. - Google Patents

Description

RA.411693-5.8.66

17 267 / 21f Gbm ^UU

N.V. Philips' Gloeilampenfabrieken, Eindhoven / Holland

"Gas and / or vapor discharge lamp"

The innovation relates to a gas and / or vapor discharge lamp, with at least one of the lamp ends and, in the case of a U-shaped discharge lamp, possibly also the web between the legs one running transversely to the lamp axis, if desired against the Lamp is provided electrically and / or thermally insulated plate within a cylindrical envelope surrounding the discharge lamp is resiliently centered.

The aim of the innovation is one for a relatively heavy discharge lamp indicate suitable centering construction.

The innovation has the feature that the centering construction consists of two opposing; ϊ · ϊ :. ^{;; 1} Λ; symmetrically arranged, U-shaped leaf

■ ^{: there are} springs whose legs facing the lamp are in the same

_S are upright direction connected to the plate pass over while the other leg in a connecting these arc.

This construction results in a particularly reliable centering.

In a special embodiment suitable for very difficult requirements The innovation is the plate on the side of the U-shaped leaf springs with two additional leaf springs symmetrical to the center of the plate provided, the outer parts of which are practically the same distance from one another as the outer legs of the U-shaped leaf springs,

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while their center lines in one to duroh the center lines of the Misshapen leaf springs going level lying transverse level.

In the case of TJ-shaped discharge lamps, it is advantageous to place the web between to surround the legs of the discharge lamp by the part of the additional leaf springs lying between the outer part and the plate, the length and the width of this surrounding part being such that this part is not like a wedge between the legs of the discharge lamp can penetrate.

The spring parts surrounding the web of the discharge lamp, seen from their attachment points on the plate, towards each other get lost.

The distance between the legs of the U-shaped leaf springs can be larger than the approaches present on the outside of the discharge lamp.

In a particularly expedient embodiment of the inflation, the ver * binding sheets have an opening in the middle part in which an attachment of the envelope directed towards the discharge lamp is accommodated »

The innovation is explained in more detail with reference to the drawing. Show it thereby Figures 1 and 2 or 3 and 4 schematically and partially in section two mutually perpendicular side views of an example of the A-ua Firing. Fig. 5 shows a particularly favorable design of the centering member .

In this case, the discharge lamp is a U-shaped sodium vapor discharge lamp, the legs 1 and 2 of which are on the one hand in pinches 3 and 4

end and on the other hand by a semicircular transition part 5 are connected to each other. The discharge lamp is surrounded by a cylindrical envelope 6, within which the lamp is centered by means to be described below.

The electrode ends 3 and 4 are electrically connected with suitable ones, if necessary with and / or openings provided with thermally insulating parts in a plate 7s running transversely to the lamp axis, e.g. made of metal. The plate can be designed circular. With the plate 7 are upright, TJ-shaped leaf springs 8 and 9 connected. That of the discharge lamp facing legs 10 and 11 of these leaf springs are supported directly or via electrical and / or thermal insulating members on the Legs 1 and 2 of the discharge lamp. (in the drawing is between a certain distance is drawn between these elements for the sake of clarity.) The legs 12 and 13 of the springs facing away from the discharge lamp 8 and 9 go into an arc also formed by a leaf spring over. The central part of this arch 14 has a collar provided Opening 15j in the one facing the discharge lamp, the power supply members containing, central pinch-like approach 16 of the shell 6 is housed.

From! "Fig. 2 it is shown that in one to the plane of the U-shaped leaf springs 8, 9 ttnd of the sheet 14 vertical plane, two additional, touching the shell Leaf springs 17 and 18 can be connected to the ends of the plate indicated there, so that the discharge lamp in two mutually perpendicular, through the central axis of the discharge lamp and the envelope is centered planes.

The Pig. 3 and 4 show a centering construction for the web 5 the discharge lamp. Here, too, a plate 19 extending transversely to the central axis of the discharge lamp and the envelope is provided a Durohlass opening for a central extension 20 of the discharge lamp can have and which in the plane of the center lines of the legs 1, 2 of the discharge lamp again with two U ~ -shaped legs 1, 2 touching? Leaf springs 22 and 23 merging into an arc 21 are provided is. The outer legs of these U-shaped springs and of them connecting arches 21 are supported on the cover 6.

From Pig. 4 it can be seen that the web 5 of the discharge lamp is made up of parts the centering structure can be clamped. For this purpose, the plate 19 is also provided with additional springs 24 and 25, which in this case not only the plate 19 in one to the plane of the TJ-shaped springs 22 and 23 support vertical plane, but also have sections 26 and 27, which clamp around the web 5 and run obliquely downwards and towards each other. To avoid that the sections 26 and 27 like a wedge between the legs 1, 2 of the discharge lamp must / their length and width can be chosen accordingly.

The distance between the legs of the U-shaped leaf springs 22 and must be so large that any approaches of the discharge lamp in this plane cannot touch the envelope 6.

In Fig. 5 is a particularly favorable design of the additional leaf springs shown. These springs consist of four, practically right, adjoining parts a, b, c and d which are marked with 33s 34s 35 imd are designated. The part 33 is connected to the plate 19 and is almost perpendicular to it.

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^{The part 34 forms an angle (1} ^) • of 30-80 with the longitudinal axis of the tube and is tangent to the web 5 °. The part 35 forms an angle (β) of 120-180 with the longitudinal axis and goes into the Part 36 above, which includes an angle (to) of 90-140 with the longitudinal axis. The free end of the part 36 rests against the wall 6 of the shell

on. With 37 a short extension / of the part 36 is referred to, the is bent in the direction of the plate 19 from. The embodiment according to this FIG. 5 is more rigid than that according to FIG. 4 during insertion of the discharge tube in the envelope, it offers little resistance at the parts in contact with the envelope, on the other hand, this resistance becomes very high great when exerting a force in the opposite direction, which could happen in a case, for example. Furthermore, the web 5 is fixed better by the double-curved shape. Due to the bent shape of the part 37 the centering slides easily when the tube is inserted into the casing. Damage to the wall 6 and possibly one on it The existing layer, e.g. a thermal insulation layer made of conductive, transparent tin oxide is thus avoided »

The centering construction shown can be very stiff and yet sufficient be made elastic in order to meet all mechanical, thermal and electrical operating requirements.

Protection claims:

Claims (8)

~ 6 ~ RA.411693 * -5.β.66 Protection claims: 1. Gas and / or vapor discharge lamp, in particular sodium vapor discharge lamp, at least one of the lamp ends and, in the case of a U-shaped discharge lamp, optionally also the web between the legs with a plate running transversely to the lamp axis and, if desired, electrically and / or thermally insulating against the lamp is provided which is resiliently centered within a cylindrical envelope surrounding the discharge lamp, characterized in that see the centering construction from two symmetrical to the center of the plate, U-shaped leaf springs, whose legs facing the lamp in in the same direction are connected upright with the plate, while the other legs are connected in an arch connecting these legs pass over. 2. Discharge lamp according to claim 1, characterized in that on the side of the U-shaped leaf springs the plate is provided with two additional leaf springs symmetrical to the center of the plate, the outer one Parts are in practically the same distance from each other as the outer legs of the U-shaped leaf springs, while the center lines in one to the plane passing through the center lines of the U-shaped leaf springs. 3 "U-shaped discharge lamp according to claim 2, characterized in that the web between the legs of the discharge lamp from the between the outer part and the plate lying part of the additional leaf springs is surrounded, the length and width of the surrounding part - 7th · »7 - are such that it is not like a wedge between the legs of the Discharge lamp can penetrate. 4. Discharge lamp according to claim 3, characterized in that the spring parts surrounding the web of the discharge lamp extend towards one another, viewed from their fastening points on the plate. 5 · Discharge lamp according to claim 3? characterized in that the additional leaf springs consist of four, practically right, adjoining parts a, b, c and d, of which part a is connected to the plate and is almost perpendicular to it, the part b includes an angle of 30 - SO with the longitudinal axis of the tube and is tangent to the web of the discharge tube, the part c encloses an angle of 120-180 with the longitudinal axis of the tube and the Part d forms an angle of 90-140 with the longitudinal axis of the tube and with its free end against the surrounding envelope of the discharge tube where the angles are calculated from the direction of the longitudinal axis pointing from the web to the plate » 6. Discharge lamp according to claim 5j, characterized in that the part d of the leaf spring, after the point of contact on the shell, merges into a short part e bent away from the plate. 7 · Discharge lamp according to one or more of the preceding Claims, characterized in that the distance between the legs of the TJ-shaped leaf springs is greater than on the outside of the discharge lamp existing approaches » 8. Discharge lamp according to one or more of the preceding Claims j characterized in that the connecting arch in the central part has an opening in which an approach of the envelope facing the discharge lamp is accommodated. Description, claim and drawing are identical to those originally filed with the patent application .