DE102004025434A1 - Florescent light, uses thermo sleeve to enclose lamp with specified spacing - Google Patents

Abstract

A light with a closed housing, translucent on the radiant side, for accommodating at least one florescent lamp with front-end socket and retained in the housing end-parts (2), in which a thermo-sleeve (4) encloses the florescent lamp with a specified spacing, and whose axial length is dimensioned so that at least the zone of the length of the inner electrodes of the lamp are cover over.

Description

The The invention relates to a luminaire with a closed, at least on the emission side translucent housing for receiving at least one end capped in housing end parts held and contacted fluorescent lamp.

In the not previously published German patent application 10 2004 015 561.5 describes a lamp, which makes it possible that on the one hand occurring at low temperatures unwanted luminous flux losses be at least largely avoided and secondly the measures provided for this purpose no adverse effects on the lighting operation or the Efficiency at normal or higher Temperatures have, with the measures taken only a minimal constructive and material overhead require.

task It is the object of the present invention to provide further embodiments of the solution of patent application 10 2004 015 561.8 show and additional To achieve improvements.

Is solved This object is achieved in particular by the features of claims 1 and Figure 7, preferred embodiments being associated with those claims dependent claims are indicated.

By At both ends provided thermal sleeves succeeds in particular in conjunction with T5 lamps which otherwise ren at low temperatures ren to substantially avoid occurring luminous flux losses, wherein At the same time, this advantage is ensured at every mounting position the fluorescent lamp is guaranteed in the lamp.

According to one Another embodiment of the invention is in the housing end parts a respect to the Fluorescent lamp having a predeterminable radial distance, through, translucent Thermotube detachable supported. The radial distance is chosen so that, especially in the Area of the electrodes of the fluorescent lamp in operation largely independently from the respective outside temperature set an optimal ambient temperature.

These Creation of a heat storage area At the location of the electrodes of the fluorescent lamp can be characterized by heat-reflecting Coatings, metal sleeve elements and / or the free cross section between the fluorescent lamp and the thermal tube reducing activities favored become.

The Design of the holder of the thermal sleeves or the thermal tube takes place in such a way that thermal sleeves or thermal tube easy can be mounted and dismounted, i. in particular plug-in connections are provided.

The The invention will be explained in more detail below with reference to the drawing, wherein the single figure of the drawing in perspective view one End portion of a lamp according to the invention shows, the other end is formed in a similar manner.

According to the drawing, the lamp shown comprises a suitable for ceiling or wall side solidification carrier housing 1 , which is used to accept ballasts, cables and the like and on the end parts 2 a translucent housing 3 is held.

The free ends of the housing 3 are preferably sealing in a formally adapted groove of the respective end parts 2 recorded so that the two end parts 2 and the case 3 set a closed space.

In the illustrated embodiment, the housing 3 formed for receiving a fluorescent lamp, but it goes without saying that by appropriate housing dimensioning and a receiving space for a plurality of fluorescent lamps, which are parallel to each other, can be created.

The end parts 2 are provided with passage openings for the respective double ended fluorescent lamp, which is contacted in the region of the end parts.

According to the invention is adjacent to each end part 2 and the passage opening for the fluorescent lamp, a thermal sleeve 4 provided, which has a predeterminable radial distance from the fluorescent lamp and extending over a likewise predeterminable length portion of the fluorescent lamp, not shown in the drawing.

The thermal sleeve 4 could in principle be in one piece with the end part 2 be formed, but preferably and as shown in the drawing, it is in the thermal sleeve 4 around a separate part, that with respect to the end part 2 by means of several distributed around the circumference holding elements 6 is fixed, which is the thermal sleeve 4 hold clamped.

Preferably, at the free end of the thermal sleeve 4 an introductory aid 5 intended for the fluorescent lamp. Such an introduction aid 5 For example, it may be funnel-shaped, have guide ribs on the inside and clamped to the thermal sleeve 4 be connected.

Instead of thermal sleeves provided at both ends, according to a further advantageous embodiment of the invention, a continuous thermal tube may also be used, with regard to the dimensioning of the tube and the distances with respect to the fluorescent lamp essentially the same considerations apply as in connection with the thermal sleeves 4 have been described. Optionally, the radial distance between the fluorescent lamp and continuous tube can also be chosen slightly larger than that for the unilaterally open thermal sleeve, as in a closed tube more effective compared to the thermal sleeve heat storage can be achieved.

By the use of double-sided thermal sleeves or A continuous thermal tube is especially successful with T5 fluorescent lamps of preferably 16 mm diameter, in the range of for the function the fluorescent lamp at different and especially deep Temperatures critical electrodes a largely temperature-stable Zone or a not exposed to strong temperature fluctuations Create a zone that, surprisingly, enables the functionality the fluorescent lamp in a wide temperature range and in particular also in a range of lower temperatures to ensure and disturbing light losses to avoid.

1

support housing

2

end

3

trans lucentes casing

4

Thermo collar

5

introduction Help

6

supporting member

Claims (12)

Luminaire with a closed, at least radiating side translucent housing for receiving at least one end capped, held in the housing end portions and contacted fluorescent lamp, characterized in that in the housing end portions ( 2 ) in each case one the fluorescent lamp with a predeterminable distance enclosing thermal sleeve ( 4 ), whose axial length is dimensioned such that at least the region of the longitudinal extent of the inner electrodes of the respective fluorescent lamp is covered. Luminaire according to claim 1, characterized in that the length of the Themanzschetten ( 4 ) is selected as a function of the wattage, that always with respect to their positioning of the stamp page on the fluorescent lamp associated longer inner electrode of the fluorescent lamp is covered. Luminaire according to claim 2, characterized in that the length of the thermal sleeves ( 4 ) is selected in the range of 60 to 100 mm depending on the wattage. Luminaire according to one of the preceding claims, characterized in that the fluorescent lamps used are T5 lamps, which on one side have two different lengths of internal electrodes. Luminaire according to one of the preceding claims, characterized in that the thermal sleeves ( 4 ) at the respective housing end part ( 2 ) detachable, in particular via a clamping guide ( 6 ) are held. Luminaire according to one of the preceding claims, characterized in that the thermal sleeves ( 4 ) have at least in the region of their free end querschnittsverringernde elements for specifying a permissible air exchange with the housing interior. Luminaire with a closed, at least radiating side translucent housing for receiving at least one end capped, held in the housing end portions and contacted fluorescent lamp, characterized in that in the housing end portions ( 2 ) with respect to the fluorescent lamp a predeterminable radial distance exhibiting, at least on the radiator side of a translucent material existing thermal tube ( 4 ) is releasably supported. Luminaire according to one of the preceding claims, characterized in that the radial distance between the fluorescent tube and the thermal tube in dependence on the internal volume of the closed Ge housing ( 3 ) is selected, with a different volume, a change in the radial distance is provided. Luminaire according to one of the preceding claims, characterized in that the thermal tube ( 4 ) consists of a temperature-resistant, especially crystal-clear plastic material. Luminaire according to one of the preceding claims, characterized in that the thermal tube ( 4 ) consists of a crystal clear plastic material, which is partially coated with a heat radiation reflecting material. Luminaire according to claim 7, characterized gekenn records that the thermal tube ( 4 ) is provided in the region of the inner electrodes of the fluorescent lamp at least on a partial region of its inner surface or outer surface with a heat radiation reflecting material. Luminaire according to claim 7, characterized in that the thermal tube ( 4 Having the region of the longitudinal extent of the inner electrodes of the fluorescent lamp at least on one side limiting, the free passage cross-section between the fluorescent lamp and the thermal tube reducing means.