BG62434B1 - Therapeutical lamp with polaraized light for manual operation - Google Patents

Abstract

A polarised light-radiating therapeutical lamp has areflector (36) arranged directly behind the lamp (42) and apolariser (33) arranged in the path of the light emitted by thelamp (42). The polariser is a Brewster polariser made of a mirrorsandwich of a plurality of thin, plane parallel float glass panes(34) directly superimposed and congruent, mounted in a glass frame(35) The float glass panes (34) may have elliptical forms and theglass frame (35) may be shaped as an elliptical reception troughwith an elliptical bottom and a wall that surrounds a substantialpart of said bottom. The wall is provided with a plurality oflocking lugs than engage and retain the mirror sandwich.6 claims, 10 figures

Description

The invention relates to a therapeutic lamp for biostimulation with polarized light for manual use, in particular to a therapeutic lamp for manual use, which emits polarized light of a certain intensity and wavelength and which also covers a certain area of the illuminated surface.

BACKGROUND OF THE INVENTION

DE-PS 32 20 218 describes the general biostimulating effect of polarized light. In particular in FIG. 5 of the literature shows a therapeutic lamp for manual use using a polarizing filter. The lamp is suitable for creating a light beam with a diameter of about 50 mm and the power of the lamp reaches 150 W. The manual lamp produces a lot of heat and is cooled by a fan. In this case, much of the power is lost in the form of heat and the efficiency is relatively small, which is a serious problem related to cooling. Furthermore, while optimizing cooling and optimizing efficiency, the possibilities for manipulating this lamp cannot be optimized.

International Patent Application PCT / EP88 / 00899 Publication WO 89/03235 discloses a therapeutic lamp with biostimulating effect on polarized light. According to the invention, the therapeutic lamp shown in FIG. 1 consists of a housing, a bulb located in the housing, a reflector located immediately behind the bulb, a polarizer located in the path of the light flux emitted by the bulb, a light filter plate to filter the ultraviolet spectral components of the emitted light and a fan located the housing behind the reflector, the housing consisting of three consecutive directly attached parts defining a common interior space, of which the first part is a handle having a substantially cylindrical shape, the second arched with one part is attached at one end to the end of the handle and a third portion with tsilind5 in distribution frontal portion attached to the other end of the middle part. The front of the hull has an axis that concludes the first blunt angle with the axis of the handle. The light emission unit is located inside the housing 10 and is enclosed by the inner walls of the housing so that the passage through which the air passes is formed around the light emission node. The light emission assembly consists of a pair of interconnected cylindrical tubes with axes concluding a second obtuse angle, which is near the first obtuse angle and is double at the Brewster angle. The bulb and reflector are attached to the first tube. The polarizer is located in the light beam assembly including a light deflection device. The fan located in the handle draws fresh air through the duct formed around the light-emitting assembly and takes it through the pro25 slots of the handle. The deflection device includes a Brewster polarizer consisting of a plurality of glass plates spaced apart from one another with air gaps between 30 and two adjacent glass plates (p. 5, lines 11-14 of WO 89/03235). The mounting plate is located transversely to the cooling air stream (page 6, lines 13-18 of WO / 03235 and Figure 1, item 38). A disadvantage of the known solution is that the cooling of the polarizer is made difficult by the fact that the glass plates of the polarizer are thermally insulated from each other by means of air gaps. The cooling of the lamp is also hampered by the transverse arrangement of the circuit board with the cooling air stream. In addition, the electrical connections are located on the side of the circuit board, making them difficult to cool.

SUMMARY OF THE INVENTION

It is an object of the invention to provide a hand-held therapeutic lamp 50 which has, on the one hand, an easy-to-use design and, on the other, the ability to provide optimal function, for example with regard to cooling.

According to the invention the problem is solved by a therapeutic lamp with polarized light for manual use, consisting of a housing, a handle constructed indivisibly to the housing, in which a lamp with a maximum power of 100 W. is installed. One reflector is located directly behind the lamp. A polarizer is located in the luminous flux of the light emitted by the lamp. A filter plate is provided for filtering the UV components from the light spectrum of the light being imaged. There is a fan in the housing behind the reflector. The polarizer used is the Brewster type and consists of a multilayer mirror reflector made up of many thin thin parallel float glass plates, enclosed by a glass holder, lying immediately and equally spaced on top of one another. The housing consists of three consecutively arranged and immediately connected three parts defining a common interior space. The first part is a tube-shaped handle with an axis. The second part is a vaulted middle part, which at one end is connected to one end of the handle. The third part is a cylindrical front part which is connected to the other end of the vaulted middle part. The front has an axis that concludes the first blunt angle with the axis of the handle. In the enclosed inner space of the housing is located a node for the emission of light away from the inner walls of the housing. An air passage is formed around the light emission node. The light emission assembly consists of two interconnected hollow cylinders, the axes of which form a second obtuse angle twice the angle of Brewster. The hollow cylinders are cut in one plane, with the Brewster angle always drawn between its normal axis and the two axes. The lamp and the reflector are connected to the first hollow cylinder. The second hollow cylinder is closed by the filter plate. The Brewster polarizer is positioned in the light-emitting assembly so as to deflect a portion of the light emitted from the lamp toward the second hollow cylinder. The fan is located inside the fresh air intake handle through the duct formed around the entire surrounding surface of the light-emitting unit. Slots are provided at the bottom of the handle for air leakage from the interior. The light emission node is located in the middle and front in such a way that the space around the light emission node near the polarizer is larger and the space near the reflector is smaller. The first blunt angle is between 105 and 120 °. The outer surface of the handle on the side, facing the light outlet at the front, has recesses for inserting the fingers.

The thin float glass plates are elliptical in shape, the glass holder is in the form of an ellipsoidal receptacle with an ellipsoid base and a wall orbiting a substantial portion of the ellipsoid base, the wall comprising a plurality of blocking teeth. In addition, the lamp is halogen and constructed with the reflector.

According to the invention, using a Brewster polarizer with a multilayer mirror reflector of floatscheiben lying on top of one another, a high polarizer efficiency is obtained. On the other hand, easy cooling of the multi-layer float glass reflector is achieved, since there is no insulating air gap between the individual plates.

In addition, float glass plates directly positioned on top of one another prevent contamination of the polarizer due to the penetration of dust particles. This increases the duration of use of the lamp.

According to a further refinement of the invention, the filter plate closes a second hollow cylinder. In this case, the second hollow cylinder is closed for light passage and at the same time mechanically sealed against dust penetration. Similarly, by means of one gasket, the reflector closes the first hollow cylinder, whereby the entire tubular device, consisting of the first and second hollow cylinders, is hermetically sealed, thus preventing contamination.

According to another further refinement, the light emission unit is disposed between the middle and the front in such a way that the space around it near the polarizer is larger than near the reflector. This results in an optimum cooling flow.

In another embodiment, the first angle is between 105 and 120 °, and since the therapy lamp is specifically designed for the patient's self-treatment, this orientation provides treatment in a comfortable position and comfortable light for the patient.

According to another further refinement on the outer surface of the handle on the side, facing the light outlet at the front, there are recesses for inserting the fingers. This allows the hand lamp to be kept in the best possible way and directed to the treated area, for example, to the face of the person using the lamp.

Slots on the underside of the handle are also advantageous. In this way, there is no barrier for the outgoing cooling air flow.

According to a further improvement of the invention, the float glass plates have an ellipsoidal shape, and the glass holder is the shape of an ellipsoidal receptacle with an ellipsoidal base and a wall surrounding a substantial portion of the base, wherein the wall has a plurality of blocking teeth which engage the engaging teeth and thus detain him. In addition, the mirror reflector can be positioned directly in the cutting surface of the tubular device, ensuring its further retention.

Another advantage is that a metal halide lamp with a reflector can be incorporated into the lamp and, when in effect, the heat decreases by at least about 5%. In doing so, the life time is extended. As a special advantage, the lamp is so shaped that it does not emit any or very small amount of ultraviolet light.

Explanation of the annexed figures

The invention is illustrated by examples of preferred embodiments with reference to the accompanying drawings, of which:

Figure 1 is a longitudinal sectional view of an embodiment of the hand lamp according to the invention;

FIG. 2 is a sectional side elevation of the handheld lamp of FIG. 1;

FIG. 3 is a front view of the hand-held lamp of FIG. 1;

Figure 4 is a bottom view of a hand-held lamp diagonally;

Figure 5 is a perspective view of the light emitting unit of the hand lamp;

6 is a sectional view of an enlarged detail of a Brewster polarizer;

7 is a top plan view of the glass holder;

Figure 8 is a side view of the glass holder;

9 is a sectional view along line AA of FIG. 7; 10 is an enlarged view of the detail shown in FIG. 9, with the designation "Detail 1".

Examples of carrying out the invention

The depicted in FIG. 1, a hand-held lamp consists of three structural parts - a housing 2, a light emission unit 3, and a fan 4. The housing 2 consists of a handle 21, a vaulted middle portion 22 and a front portion 23, the shape of which is clearly visible in FIG. 1-4. The housing 2 is predominantly made of two mutually fitting plastic parts which define the space to accommodate the rest of the structural members.

The light emitting assembly 3 is centrally located in the middle portion 22 and the front portion 23 of the housing 2 of FIG. 1 in such a way that there is substantially everywhere between the inner wall of the housing and the light emission unit 3. The term "central" means that in the depicted in FIG. 1 plane in the vertical direction this distance is equal on both sides. As can be seen in FIG. 1, the light emission node 3 is not centrally located in the image plane.

The light-emitting assembly 3 consists of two cylindrical tubes 31 and 32 welded to one another at an oblique angle, the axes of which make an angle of about 114 ° corresponding to the double Brewster angle. The two tubes 31, 32 are cut along the outer edge of a ravine at which the intersection point of the axis of the tubes lies and which is covered by the Brewster-type polarizer 33 through the resulting elliptical opening. The light emission unit 3 may see FIG. 5, where it is presented in perspective.

In FIG. 6 is a sectional view of a portion of a polarizer of a plurality (e.g., 5) of thin, parallel elliptical float glass plates 34 disposed adjacent to one another, i.e. without getting any distance between them. The float glass plates 34 are enclosed in a glass holder 35, which in FIG. 6 is a schematic representation only. The float glass plates 34 have a high polarization efficiency, which in turn facilitates the cooling of the mirror reflector by the float glass plates, since they are located directly on top of one another and are not separated by an insulating air layer between them. The float glass plates are therefore in thermal contact with each other, so that in terms of thermal properties the mirror reflector can be considered as a single element.

Moreover, due to the direct position of the float glass plates on one another, no particulate matter can enter. Therefore, the Brewster polarizer retains its high efficiency or efficiency even after prolonged use of the lamp.

A detailed description of the glass holder in which the reflector is housed is shown in FIG. 7-10. The glass holder 35 is in the form of an elliptical receiving bath with an elliptical base 39 and a wall 40 surrounding it about a substantial portion of the base 40. The wall 40 has a plurality of locking teeth 41 that engage the lateral mirror reflector and engage therein. The wall 40 should not be raised around the entire base 39 so that, for example, it is possible to mount the mirror reflector with the glass holder 35 tightly to the pipes 31 and 32 without hitting the glass holder 35 in the housing 2. The float glass plates lie directly on the intersection surface of the tubes 31 and 32 of the tubular device, which intersect at the Brewster angle. In addition, the float glass plates 34, respectively the glass holder 35, are fixed tightly to the intersection surface by a single seal, as one reflector 36 and one filter plate 37 are fixed tightly to the pipes 31 and 32, as will be explained below. In this way, the inner space of the tubular device formed by the tubes 31 and 32 is mechanically sealed so that no dust can enter it. A lamp 42, in particular a metal halide lamp, is mounted at the rear end of the tube 31, with a reflector 36, which is kept pressed to an annular axial inner edge of the tube 31, in particular between the annular axial inner edge and the reflector 36. seal not shown in the figure. The halogen lamp, designed in conjunction with the reflector, provides a heat reduction of at least about 5%.

The lamp 42 emits axially outward visible and infrared light, with the incidence angle of the Brewster 33 polarizer being 57 °. The lamp 42 is so designed that it does not emit ultraviolet light, which can avoid the risk of burning the person using the lamp and unwanted spotty darkening or burning. The power of the lamp is about 20 watts, but in no case can it be more than 80 to 100 watts, so that the cooling conditions are optimally well below this limit power.

The float glass plates 34 of the Brewster polarizer 33 reflect light parallel to the axis of the tube 32, whereby the reflected light is linearly polarized. The non-reflected light components fall on the black inner upper surface of the closure plate 35 and the heat generated is removed from the cooling air.

The interior space of the light-emitting assembly 3 is closed at the front end of the tube 32 with a yellow filter plate 37. The purpose of the filter plate 37 is, on the one hand, to filter inwardly the spectral components of light reflected by the polarizer 33, which are reflected by the polarizer 33. 400 nm to 450 nm, and on the other hand, as already explained, the mechanical closure of the interior space of the light-emitting unit 3, whereby the optical properties of the elements as arranged herein cannot are violated due to dust.

In the cooling air stream below the lamp 42 there is a mounting plate 38 on the side, which is retained by the many fixing elements of the housing 2 not shown in the figure. The connecting electrical conductor goes to the circuit board 38, on which there is a fuse and other electrical elements. It is advantageous if an electrically damping circuit (soothing unit) is connected in series to the lamp 42, whereby it is heated by about 2 to 5% less. One decrease in the heating of the lamp 42 on the one hand increases the time for its use, and on the other hand shifts the spectral distribution of the emitted light to the infrared region (by reducing the color temperature), thereby increasing the depth of light penetration. It is also possible that such a spectral distribution is more favorable for biostimulation. Reducing the color temperature also reduces power losses. Reduced heating of the lamp 42 can also be achieved by reducing the supply voltage. For example, if the nominal voltage of the lamp is 12 V, the power transformer can be sized to supply about 11-11.4 V.

The fan 4 is arranged axially in the handle 21 and is oriented axially against the lamp 42, sucking air from the interior space into the housing through the inlet 24 formed in the housing around the light emission unit 3 (Fig. 3). The outflow continues through the slots 25 from the free end of the handle 21 (Figs. 1 and 4). The cooling air enters the interior of the housing along the entire surrounding surface of the light-emitting unit 3. FIG. 1 this passage is explained by arrows.

The hull shape shown in the figure is not only aesthetically pleasing but also provides very favorable cooling. The volume of the inner space of the housing behind the closure plate 33 and the area of the upper end of the tube 31 is largest due to the closure of the middle part of the housing 22 and the flow rate is sufficient to remove heat from the large upper surface of the closure plate 33 Further, the interior space in the lamp area decreases, thereby significantly increasing the airflow rate. In this channel 26, the air flows rapidly due to the paraboloid shape of the upper surface 10 of the reflector 36 and the lamp 42, where intensive cooling is performed here and the operating temperature of the lamp 42 does not exceed the allowable value. Also, after prolonged use of the lamp 15, the housing temperature does not become higher than about 20 ° C above ambient temperature.

The axis of the handle 21 is slightly inclined towards the axis of the lamp in such a way that the direction of the light emitted by the hand lamp 1 is at an angle between 105 and 120 °, in particular from 105 to 110 ° with respect to the axis of the handle . This orientation allows for a pleasant grip and comfortable handling of the lamp. In the case of a 20 W metal halogen lamp with a reflector diameter of 50 mm, the inner diameter of the pipes 31 and 32 is also selected 50 mm. This hand-held lamp emits parallel beams of polarized light30 lines in a circular beam of 50 mm diameter and a light power density of about 50 mW / cm.

Claims (6)

1. Therapeutic lamp with polarized light for manual use consisting of a housing, a handle designed indivisible to the housing, a lamp placed in a housing with a maximum power of 100 W, a reflector located immediately behind the lamp, a polarizer located in the light stream of the light emitted by the lamp, a filter plate for filtering the ultraviolet 45 components of the light spectrum of the light emitted and a fan located in the housing behind the reflector, the housing (2) consisting of consecutively arranged one and then three directly connected parts 50 defining a common interior space, wherein the first part is a tube-shaped handle and an axis, the second part is a six-fold middle part (22) which at one end is connected with one end of the handle (21), and the third part is a cylindrical front part (23) which is connected to the other end of the vaulted middle part (22), wherein the front part (23) 5 has an axis that concludes a first obtuse angle with the axis of the handle (21), with a light-emitting unit (3) located in the closed inner space of the housing (2). and the distance from the inside of the housing (2) and 10 around the light emission node (3) is a shaped air passage (26), the light emission node (3) consisting of two connected to each other hollow cylinders (31, 32) whose axes conclude a second 15 obtuse angle that is twice the angle of Brewster, wherein the hollow cylinders (31, 32) are cut in one plane, between its normal and the two the axis is always the Brewster angle, the lamp (42) and the reflector (36) are connected to the first hollow cylinder (31), the second hollow cylinder (32) is closed by the filter plate (37) and the Brewster polarizer (33) positioned in the light-emitting assembly (25) so as to divert part of the light emitted from the lamp (42) toward the second hollow cylinder (32), the fan (4) being arranged inside the handle (21) for suction of fresh air through a channel 30 (26) formed around the entire surrounding surface of the light-emitting unit (3), wherein the lower part of the handle (21) are shaped slots (25) for air leakage from the interior, characterized in that the Brewster-type polarizer (33) consists of a multilayer mirror reflector composed of lying directly and uniformly arranged on top of each other a plurality of thin parallel flat float glass plates (34), covered by a glass holder (35), at which the mounting plate (38) carrying the switch and the fuse is located laterally in the interior of the housing in the flow of cooling air. A therapeutic lamp according to claim 1, characterized in that the light-emitting unit (3) is disposed in the middle and front (22, 23) in such a way that the space around the light-emitting unit (3) in the proximity to the polarizer (33) is larger and the space near the reflector (36) is smaller. The therapeutic lamp according to claim 1, characterized in that the first obtuse angle is between 105 and 120 °. The therapeutic lamp according to claim 1, characterized in that there are recesses for inserting the fingers on the outer surface of the handle (21) on the side facing the light outlet of the front part (23). The therapeutic lamp according to claim 1, characterized in that the thin float glass plates (34) are ellipsoidal, the glass holder (35) is in the form of an ellipsoidal receiving bath (39) with an ellipsoidal base and a wall (40). orbiting a substantial portion of the ellipsoid base, the wall (40) having a plurality of locking teeth (41). The therapeutic lamp according to claim 1, characterized in that the lamp (42) is halogen and constructed together with the reflector (36).