DE7609121U1 - DEVICE FOR THE LIGHT CONTROL OF LAMPS, IN PARTICULAR OF FLUORESCENT TUBES - Google Patents

Description

Munich, December 22nd, 1975

Hans Honey
8000 Munich 80
Pariser Str. 37 I.

Device for light control of lamps, especially fluorescent tubes

The innovation relates to a device for lighting control of lamps, especially fluorescent tubes.

Are known lamps or tubes of elongated construction, especially. So-called fluorescent tubes, which for industrial purposes as well as for the private sector use. Such fluorescent tubes shine generally over a range of 180 degrees when mounted to the wall at a suitable fit.

In contrast to lamps with screens or the like, tubes of the type in question are generally used used as pure light emitters. In private living areas it is often desirable to reduce certain areas to illuminate strongly; however, the use of fluorescent tubes of the known type does not make this possible Wish to take into account.

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Proceeding from this, the task of the innovation is to <

to create a device for lighting control of fluorescent tubes, which makes it possible to adjust the angular range of the To change light emission in a simple manner; In particular, it should be possible to produce a partial or complete Cover the tube if it is sufficient to irradiate a certain area of the living space, or when a subdued lighting effect is desired.

The solution to this problem is characterized by a pivotable one in the beam area of the fluorescent tube Blind, which is drawn from a blind rod extending parallel to the fluorescent tube and when rotating the blind rods between the open Uxüi geSCuioSbexieX: position uUUWciikLciiZcii. T'uüii ltlt

A particular advantage of the inventive device for light control is that the pivotable Blind cloth can be operated manually by pivoting the blind rods in their angular position relative to one another will. The blind rods are mounted on both sides of the tube housing and extending pins can be pivoted relative to the fluorescent tube after loosening a wing screw located on the pin will.

Since the rods carry the blind cloth, this becomes armcnika-like when the blind rods are pivoted

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folded, i.e. gathered up or stretched in the opposite direction. Εε is thus in a simple way a partial or complete covering of the radiation area of the fluorescent tube is possible without that this would require special mechanical or control measures.

The venetian blind fabric can either be completely opaque or it can have a low level of light transmission so that, when closed, it lets in enough light to create a subdued one To produce the effect of light.

■ It is of course also possible to use one of the two Pin to provide a servomotor of any design, which is used to rotate the blind rods

serves. Such constructions are naturally suitable

cguch ^

essentially for industrial purposes as / for example for use in the photo laboratory or the like.

Further expedient developments and refinements of the furnace are listed in further protection claims.

The furnace is shown below using an exemplary embodiment with reference to the accompanying drawing explained.

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Figure Ί is a perspective view of the fluorescent tube with the blind fabric half closed.

Figure 2 is an enlarged detail view of the fluorescent tube with assignment of the blind rods reproduced without a cloth in their bearings on the tube housing.

According to FIGS. 1 and 2, the fluorescent tube 1 is provided with a blind t> , which consists of a cloth 7 which is drawn onto blind rods 5 and can be pivoted between the open and closed positions. The cloth is drawn onto the blind rods 5 in such a way that it completely covers the radiation area of the fluorescent tube 1 in the closed state.

The blind rods 5 are preferably through in longitudinal .jf direction of the cloth extending pockets 9 pushed,

the two ends 11 of the blind rods being perpendicular

;: protruding, on both sides of the tube housing 13

$ extending pin 15 are mounted. As can be seen in FIG

lets wear the ends of the blind rods eyes through which one of the pins 15 extends. To the relative position as well as the angular position of the blind rods with respect to the fluorescent tube is to be determined a wing screw 17 is screwed onto the pin 15, preferably onto both pins.

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The thumbscrews are tightened to pinch the eyes or grommets on the blind rods, causing the relative position of the blind rods as a result of the between

existing friction can be fixed in the eyelets. -

The cloth 7 can be completely opaque, it however, it can also be translucent to a certain extent, so that a subdued lighting effect when closed is achievable. It is also possible to provide a suitable servomotor on the pin 15, which at industrial application of lighting control by remote control or the like. is actuatable to the blind rods adjust in their angular position with respect to the fluorescent tube.

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The operation of the blind rods is very simple, i.e.

it is only necessary to lie the one or both Ischraub en 17 on the tube housing 13 to be loosened slightly, after which the blind cloth is either pushed together *

is used to clear the radiation area of the fluorescent tube * admit, or to partially (Figure 1) or completely surround the radiation area of the fluorescent tube.

Claims (1)

Ί. Device for light control of lamps, especially of Fluorescent tubes, characterized by a "in the beam" area the fluorescent tube (i) pivotable blind (3), which consists of a parallel to the fluorescent tube extending blind rods (5) pulled up and when rotating the blind rods between open and closed position swiveling cloth (7). Z. Device according to claim 1, characterized in that that the blind rods (5) through in the longitudinal direction of the Tuches extending pockets (9) are pushed, and » that the two ends (11) of the blind rods, perpendicular protruding from the long central part of the bar, on "both sides of the tubular housing (13) extending pin (15) are stored. 3. Device according to claim _ί, characterized in that that the ends of the blind rods are each arranged one behind the other in the axial direction of the pin (15), wherein a wing screw (17) releasably against the means Eyes on the pin pushed-on ends of the blind rod is screwed. 4. Apparatus according to claim 2 or 3, characterized in that that the blind rods receiving pockets (9 ^V ) of the cloth (7) extend close to the pin (15). 7609121 07/22/76 Il * re »■» ■ ** for * · C4 it » * ο -9 fr * t πι »™ ι / Γ * · · ·" ■ r β * ·· ο «t .. (T a <r »fi> · re 5 · Device according to one of the preceding claims, characterized in that the blind rods with opened cloth are adjustable in their angular position with respect to the fluorescent tube. 7609121 07/22/76