FI61810B - UV BESTRAOLNINGSAPPARAT - Google Patents

Description

I. Γο1 NOTICE OF ADVERTISEMENT

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Potent divide la t 'v ^ (51) Kv.ik? /Int.ci.^ A 61 H 5/06 £ | J Q jvj | __p | LAN D (21) Patent application - Patentansöknlng T8271 3 (22) Hikemlspiivi - Ansöknlngsdag 05.09 · 7 8 (civ 'v 7 (23) Primary cloud —Giltighetsdag 05.09.78 (41) Has become public - Bllvit offentllg Ql +. 01.80

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1 (44) Date of publication and date of publication. -

Patent and registration authorities Ansökan utlagd och utl.skrlften publicerad 30.06.82 (32) (33) (31) Pyydetty etuoikeus — Begärd prlorltet 03.07.78

Federal Republic of Germany-Förbundsrepubliken

Germany (DE) P 2829117.0 ('Π) Wolff System Service GmbH, Lindenring 17, b000 Frankfurt 50,

Federal Republic of Germany-Förbundsrepubliken lyskland (DE) (72) Friiidrich Wolff, P’rankfurt, Federal Republic of Germany-Förbundsrepubliken T.y skland (DE) (YM Oy Koi ster Ab (',) Π) UI trav.iolet.

The invention relates to an ultraviolet irradiation device for medical or cosmetic applications with a housing, parallel parallel-arranged ultraviolet light emitting low-pressure mercury fluorescent tubes, preferably at least a UV filter and surround the fluorescent tube.

However, this type of radiation device is already known. It has 5-20 Hg low-pressure fluorescent tubes arranged in parallel in parallel and equipped with trough-shaped reflectors such that po. a relatively flat field with a high radiation density is generated in or slightly outside the radiation opening of the device in the UVA region and possibly also at the boundary of the UVB region. Such devices are intended to irradiate either larger parts of the body or the whole body.

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Often, however, only smaller parts of the body, e.g. the face or part of the arm, have to be treated with ultraviolet radiation when it comes to, for example, tanning the face or treating a skin disease, e.g. dandruff. However, the above-mentioned device is too expensive for such treatment, useless 1. wasted radiation also occurs quite a lot. And if the body part to be treated is round, the radiation treatment has to be performed many times, i.e. from different sides.

The invention therefore aims to develop a radiation device as described above, which can also be used for the treatment of smaller parts of the body, such as the face, arms or legs, and which is economical in terms of its structure, energy requirements and length of processing time.

The invention is characterized in that at most four fluorescent tubes are arranged in parallel, the outer side walls of the two outer reflectors having substantially parallel extensions with a distance slightly greater than the width of the human face and a depth at least approximately equal to maximum width, and that the distance between these extensions is substantially open.

However, it is preferred to use only two fluorescent tubes.

Since there are few fluorescent tubes in the device according to the invention, its construction costs remain low. The body part to be treated can then be placed - at least in part - in the free space between the extensions of the side walls of the reflector, so that the waste radiation and the operating costs caused by it are kept to a minimum. Because the reflectors have extensions, the radiation is directed to the part of the body being treated both from the front and from the side. The radiation then encounters a relatively large surface (one radiation). In addition, the device is also able to process strongly rounded body parts, the surface to be treated then becoming relatively large. Of course, correspondingly fewer radiation treatment times are required. The extensions in the side walls of the reflectors are used to keep the radiation together so that the device can also handle larger parts of the body that are placed close to the radiation opening.

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In a preferred embodiment, the other side walls of the reflectors are dimensioned so short in relation to the width of the reflector groove and the depth of the extensions that the extensions, i.e. a considerable part of their depth, are exposed to direct radiation from a larger distance of fluorescent tubes. In this way, a relatively large area is obtained in the above-mentioned free space, to which the radiation of both or all of the fluorescent tubes is exposed, so that the radiation density is very high. This, in turn, contributes significantly to rapid tanning and effective treatment of dandruff.

The invention recommends a reflector surface having two inner arcs in the cross-sectional direction, which abut each other at sharp angles in the central plane of the housing, and two outer arcs bordering each other in the central plane of the tubes at obtuse angles and forming (each) tangential extension on the outside. Such a reflector is capable of converting virtually all of the fluorescent radiation - including the back radiation - into useful radiation.

According to another structure of the invention, the housing is in the form of a substantially parallelepiped with a radiation opening at the front and a bottom surface near the ends of the tube and a back surface and / or one side surface formed as a vertical surface. The device can then be used, for example, to treat the face (in an upright position) or to treat the arms and legs (lying on the back or side surface), so that in each treatment the body part in question is brought to the best possible position.

In this connection, it is advantageous to arrange a support arch in the radiation opening so that the body parts in question are brought into the most advantageous treatment position. With the help of these arcs, the highest possible radiation density is then directed to the part of the body to be treated continuously, e.g. due to skin disease.

According to a very simple structure, the reflector consists of the inner walls of the housing. Such a housing can be manufactured, for example, by an extrusion method. If the housing is made of metal and thus conducts heat, any radiant heat trapped by the reflectors is conducted directly through the outside of the housing to the surrounding air.

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The invention further comprises a structural variant in which an air-conditioning space with a ventilation gap is arranged between the reflector and the housing. Because po. fluorescent tubes generate very little heat - as a result, the body part to be treated in each case can therefore be placed very close to the tubes - the dissipation of heat does not require very complex structures.

The invention will be described in more detail below by means of preferred structural examples with reference to the drawing, in which Figure 1 is a perspective view of a structure according to the invention, and Figure 2 is a horizontal section of another structural alternative.

The radiation device shown in Fig. 1 has a housing 1 in which two fluorescent tubes 2 and 3 with a low-pressure Hg filling are arranged in parallel. It excites one phosphor layer 4 (Fig. 2) so that UV radiation is generated, the maximum of which is in the UVA range. The glass dome 5 of the tubes is made as a filter, which prevents interfering UVB and UVC radiation very effectively. Each tube 2, 3 has a trough-shaped reflector 6, 7, which will be described in detail later. The box 8 arranged in the lower part of the housing has a pre-switching device, a timer timer 9 or an alarm timer which also has a manual switch. The tubes are attached to the seats 10 at both their upper and lower ends. Between the reflectors 6 and 7 and the housing 1 there is an air-conditioning space which is connected to the outside of the device via air gaps 28. The housing 1 has two vertical surfaces, i.e. a bottom surface 11 near the ends of the pipes and a side surface 12 and a back surface 13. Legs 14 can be attached to the vertical surfaces so that the additional air gaps 28 remain free.

The structure according to Fig. 2 differs from the structure according to Fig. 1 in that it has a housing 15, the inner side of which forms a reflector arising directly from both reflector gutters 6 and 7. Consequently, the mode of operation of the device according to Fig. 1 can be described with reference to Fig. 2. The reflector troughs 6 and 7 have two inner walls 16 and 17 as well as two outer side walls 18 and 19. The latter continue as tangential straight extensions 20 and 21, which are parallel to each other. Each side wall 5 61 8'1 'f) these are part of an arc. The two inner arches 22 and 23 merge into an acute angle in the central plane of the housing, and the two outer arches 24 and 25 again merge into an obtuse angle in the central plane of the tubes 2 and 3 with the inner arches 22 and 23 and form extensions 20 and 21. 21 the depth t is slightly larger than the width w of the reflector chute 6, 7. The distance a between the parts 20 and 21 is slightly greater than the width of the human face. The other side walls 16, 17 of the reflector are dimensioned so short that direct radiation can be directed from the respective opposite tube 2 or 3 to most of the extensions 20 and 21, as indicated by the radii S1 and S2. There is then a free space 26 between the extensions 20 and 21 with direct radiation from both tubes.

Now that some part of the body, e.g. the face 27 (dashed lines) enters either completely or partially the free space 26, the direct radiation of both tubes 2, 3 is directed to this part. Rays that are not used are reflected to the extension, as shown in S3, and are directed from some other angle to the body part 27. Other direct rays, e.g. part is exposed to relatively strong radiation. The rays emanating from the rear side of the tubes 2 and 3, which are mainly reflected in the arcs 22-25, are then directed directly or through the new reflection from the extension 20, 21 to the body part in question.

In Fig. 1, the arc 29 is shown in broken lines. It can be either simple or consisting of several parts, and by means of it, for example, the arm is brought into a precisely defined position relative to the radiating device. This is particularly advantageous for the treatment of dandruff, since the body parts to be treated are easily directed to the strongest radiation density, i.e. approximately to the central plane of the housing, at a certain distance from the tubes.

Claims (8)

1. UV radiation apparatus for medical or cosmetic purposes, having a housing (1), arranged parallel to one another, UV radiation emitting Hg low-pressure fluorescent lamps (2, 3), a filter formed preferably by the glass housing (5), which extends to a large extent the UVC and at least the short-range portion of the UVB radiation, and channel-shaped reflectors (6, 7), which surround each of its fluorescent lamps, characterized in that a maximum of four fluorescent lamps (2, 3) are arranged next to each other, that the outermost side walls (18, 19) of the two outermost reflectors (6, 7) exhibit substantially mutually parallel extensions (20, 21) with a mutual spacing (a) which is somewhat greater than the width of a human face. , and a depth (t) which is at least about the same as the maximum width (w) of the reflector channel, and that the space between these extensions is substantially free. 2. A UV radiation apparatus according to claim 1, characterized in that it comprises only two fluorescent lamps (2, 3). UV irradiation apparatus according to claim 1 or 2, characterized in that the other reflector side walls (16, 17) are dimensioned with respect to the width of the reflector channel (6, 7) and the depth of the extensions (20, 21). short,