DE202005018015U1 - Irradiation device for hardening photo-polymerisable compounds on nails of fingers or toes, has arrangement of LEDs that radiate blue or UV-A-light of certain wavelength for irradiation, and control unit controls light output from LEDs - Google Patents

Abstract

The device has an arrangement of LEDs (7) with a base plate (3) and a contact surface (2) for hand/foot that can be moved horizontally with respect to the plate such that nails of fingers/toes can be irradiated with the LEDs. The LEDs radiate blue or UV-A-light of 300 to 400 nanometer of wavelength for irradiation, and a control unit controls the light output from the LEDs such that the irradiation period is between 70 and 110 seconds.

Description

object The invention is an irradiation device for curing photopolymerizable Connections on fingernails or toenails.

It are already fingernail irradiation equipment very different construction known. From US-PS-47 31 541 is a device known that a housing has, which contains an insertion opening on its underside, in which a plate-shaped support body a telescopic rod is mounted centrally. Ring around the telescopic rod is a closed-loop irradiation lamp attached. The support body, which is formed very flat in the form of a plate, has at its outer edge Grooves, which are for positioning a clinging the plate Serve hand. To irradiate the fingernails with the hand of the support body of embraced below, leaving the fingers with the last limbs up the top of the support body rest. In this position, the fingernails are aligned horizontally and point in the direction of the arranged in the center of the plate Tragearmes. Depending on the length the fingernails these reach up to the support arm. The plate so clasped will then be in the case moved to an upper position. The delivered by the irradiation lamp Radiation is from the upper housing area as well as an additional one Reflector on the fingers and the cured fingernails reflected. To Completing the irradiation allows the plate to come back out of the case pulled out below.

One another concept for a fingernail irradiation device is off the German Utility Model 85 13 789 known. This device points a platen on with several low-pressure fluorescent tubes, the arranged parallel to each other in the direction of the housing longitudinal axis extending are and make a tunnel.

Finally is also known from German Patent 3 825 324 a fingernail irradiation device, having a bottom plate, in which a support body for Positioning the fingers of the hand to be irradiated is arranged. The the support body comprehensive hand is then inserted into the device and then from an annular UV-A - radiation lamp irradiated.

The mentioned above equipment are needed around those attached to short or broken fingernails or toenails, so-called. Tips, with UV-A - curing Compounds are provided to cure. For applying an artificial Finger or foot nail Tips are used that are up to 5 cm long. The set tip, on the top of the natural Finger or foot nail is attached, then still has to be edited to the paragraphs compensate. Here, a photopolymerizable compounds containing nail gel evenly in one or several layers modeled and repeatedly cured. First after the tips on the natural nails they are shortened to the desired length and are usually painted.

All previous irradiation equipment for curing use photopolymerizable compounds on fingernails or toenails UV-A - Light used in low-pressure mercury lamps or high-pressure mercury lamps is produced. They have the disadvantage that they are expensive, one unfavorable size and one have low life. In addition, that emitted Light spectrum of UV-A fluorescent tubes of The gases used in the fluorescent tube and therefore does not depend on the absorption spectrum the photoinitiators that can be adapted in the photopolymerizable Compounds are included.

It therefore set the task for another source of UV-A light or to seek blue light that does not have the mentioned disadvantages.

It It has now been found that light emitting diodes (LEDs) have a number of excellent ones Possess properties that make them ideally suited the previously used UV-A - fluorescent tubes and blue light tubes replace. Above all, LEDs have a long life and show a small design. Depending on the doping of the semiconductors are LEDs with different wavelengths available. It can therefore also adapted to the absorption spectrum of the photoinitiator LEDs are used. This results in the advantage of optimizing the ratio of irradiated light to the degree of polymerization achieved.

object The invention is therefore an irradiation device for curing photopolymerizable Compounds on fingernails or toenails, in which for irradiation Light emitting diodes (LEDs) are used, the blue or UV-A - light radiate. The photopolymerizable compounds containing Nail gel can be applied after curing as on the natural nails Protective layer or serve as an adhesive layer for the tips.

One such irradiation device is generally with an arrangement of 5 to 30 blue lights or UV-A - emitting light emitting diodes, which in an irradiation housing over the provided positions of the cured fingernails or toenails are.

Usually that's what the inventors say light emitted in accordance with the invention has a wavelength of between 350 and 400 nm, but LEDs of shorter or longer wavelength can also be used.

When Particularly advantageous is the use of so-called. "High Power LEDs "with a current consumption of 350 mA. They produce a highly monochromatic light. The wavelength range the high power LEDs is preferably 395 nm to 405 nm and is thus skin-friendly.

The Irradiation time for curing of photopolymerizable compounds on fingernails or toenails depends on the composition of the nail gel used and is located in the Usually between 90 and 240 seconds, preferably between 70 and 110 seconds.

When photopolymerizable compounds in nail gels are urethane acrylate, Tetraethylene glycol dimethyl acrylate, 2-Hydroxyethyhnethacrylat, hydroxypropyl methacrylate and bisphenol A diglycidyl methacrylate and other similar Connections used.

Especially good results in the irradiation of photopolymerizable compounds on fingernails or toenails then scored when a mixture of UV-A - emitting light emitting diodes with light from longer Radiate wavelength Light-emitting diodes is used. In particular, by selecting appropriate LEDs light of a wavelength be emitted, the absorption maximum in the photopolymerizable Compound contained photoinitiator corresponds. This will intensified the polymerization in a special way.

The Irradiation device according to the invention is more advantageous Way with a control unit equipped, which control the light output of the LEDs and on different polymerization times can be set.

The irradiation device according to the invention may comprise a housing which may consist of plastics or of metal (but it can also manage without a housing). In this case, one on a bottom plate 3 located support surface for the hand or the foot 2 pushed into it and brought into a position in which the coated with the compound compound fingernails or toenails from above with the light-emitting diodes 7 emitted blue or UV-A - light are irradiated. The guard covering the fingernails or toenails 4 can be fixed or hinged.

Particularly advantageous is a radiation device according to the invention, in which when inserting the support surface for the hand 2 automatically a light switch is actuated and thus the emission of light is initiated by the LEDs.

Details of the structures of an irradiation device according to the invention are by 1 to 3 represented and explained in more detail by the accompanying list of reference numerals.

1

Irradiation device with into it pushed support surface for the Hand or foot

2

Support surface for the hand or the foot

3

baseplate

4

guard

5

power adapter

6

Irradiation device with pulled out bearing surface for the Hand or foot

7

arrangement the light-emitting diodes

Claims (9)

Irradiation device for curing photopolymerizable Connections on fingernails or toenails, comprising a control unit, a housing with an array of light emitting diodes therein, a bottom plate and a bearing surface for the Hand or foot, which is movable horizontally to the bottom plate so that the finger or toenails with the light-emitting diodes can be irradiated from above, wherein the light-emitting diodes for irradiation blue or UV-A - light of wavelength 350 emit up to 400 nm and the controller the light output of the LEDs so controls that the irradiation time for curing of the photopolymerizable compounds between 70 and 110 seconds. Irradiation device for curing photopolymerizable compounds on fingernails or toenails, which has a housing made of plastic or metal, into which one on a bottom plate ( 3 ) movable support surface for the hand or the foot ( 2 ) can be pushed into it and brought into a position in which the finger or toenails coated with the photopolymerizable compounds from above with the light-emitting diodes ( 7 ) emitted blue or UV-A - light are irradiated. Irradiation device according to claim 1 or 2, wherein the on the bottom plate ( 3 ) movable support surface for the hand or the foot ( 2 ) automatically pushes a light switch when pushed into the housing and thus initiates the emission of light through the LEDs. irradiator according to one of the preceding claims, wherein an arrangement of 5 to 30 blue light or UV-A - emitting light emitting diodes over the provided positions of the cured fingernails or toenails are. irradiator according to one of the preceding claims, wherein the light-emitting diodes UV-A - light a wavelength between 350 and 400 nm. irradiator according to one of the preceding claims, wherein the light-emitting diodes as so-called "High Power LEDs "formed are the UV-A - light of a wavelength between 395 and 405 nm radiate. irradiator according to any one of the preceding claims, wherein used in the Arrangement of the LEDs in addition to LEDs with a wavelength of 350 to 405 nm and light emitting diodes with a longer wavelength used become. irradiator according to any one of the preceding claims, wherein the wavelength of the from the LEDs emitted light to the absorption maximum of in the photopolymerizable compound contained photoinitiator can be adjusted. irradiator according to one of the preceding claims, wherein it is equipped with a control device is that controls the light output of the LEDs and on different Polymerization times can be adjusted.