CN110797254A - Rectangular excimer lamp emitting uniform parallel light on single surface - Google Patents

Abstract

The invention relates to the technical field of medical light sources, in particular to a rectangular excimer lamp that emits uniform parallel light on one side, comprising a negative electrode, a positive electrode and a square tube, wherein the square tube comprises a first end face and a second end face, the positive electrode The electrode is arranged on the first end face, the negative electrode is arranged on the second end face, the vertical distance from any point on the first end face to the second end face is the same, the square tube is filled with working gas, and when the negative electrode is on the negative electrode When a power supply voltage is applied to the positive electrode, the working gas in the square tube is excited to generate light and output on the second end face, and a ventilation tube runs through the square tube. The invention can improve the problem of uneven lighting of the cylindrical lamps on the market, and can reduce the high temperature caused by the lighting of the lamps and prolong the service life of the lamps.

Description

A rectangular excimer lamp that emits uniform parallel light on one side

technical field

The invention relates to the field of medical light sources, in particular to a rectangular excimer lamp that emits uniform parallel light on one side.

Background technique

The 308nm excimer lamp is a phototherapy instrument used for the treatment of skin diseases, especially vitiligo and psoriasis. It can emit 308nm excimer light with xenon chloride gas as the irradiation source, which can induce T cell apoptosis and promote pigmentation. Synthetic, can more accurately treat the diseased skin, and the treatment time is short and the effect is good.

At present, the 308nm excimer lamps on the market have the following problems: 1. Some products are counterfeit, that is, manufacturers use ordinary fluorescent tubes to pretend to be 308nm excimer lamps; 2. Authentic 308nm excimer lamps have low optical power and unstable optical power. During the working process, the temperature of the lamp tube is too high; 3. Due to the limitation of the internal space of the product or the difference of the environment, the circular lamp tube on the market cannot meet the requirements. At the same time, as the market demand for 308nm excimer lamps continues to increase, there is an urgent need to improve the performance of 308nm excimer lamps. 4. The poor heat dissipation effect affects the working efficiency of the excimer lamp. 5. The light is uneven.

SUMMARY OF THE INVENTION

The purpose of the present invention is to propose a rectangular excimer lamp that emits uniform parallel light on one side in order to solve the disadvantage of uneven light emission in the prior art.

In order to achieve the above purpose, the technical scheme adopted in the present invention is as follows: a rectangular excimer lamp that emits uniform parallel light on one side, comprising a negative electrode, a positive electrode and a square tube, wherein the square tube comprises a first end face and a second end face, The positive electrode is arranged on the first end face, the negative electrode is arranged on the second end face, and the vertical distance from any point on the first end face to the second end face is the same, and the square tube is filled with working gas. When a power supply voltage is applied to the negative electrode and the positive electrode, the working gas in the square tube is excited to generate light and output on the second end face, and a ventilation tube runs through the square tube.

Preferably, the square tube is a rectangular parallelepiped, the first end face and the second end face are two non-adjacent planes, and the square tube is made of quartz glass.

Preferably, the area occupied by the negative electrode on the second end surface is less than 10% of the area of the second end surface, the positive electrode is a sheet electrode, and the negative electrode is a parallel winding wire.

Preferably, the surface of the sheet electrode is a specular reflective surface.

Preferably, the working gas is a mixed gas of Xe and Cl.

Preferably, the first end face is provided with a coating for reflecting light, and the second end face is provided with a coating and an anti-reflection coating for selectively outputting the wavelength of the output light, which can increase the transmittance of 308 nm light , to increase the optical power.

Preferably, a mounting plate is connected to the side wall of the square tube, and a mounting hole is opened on the mounting plate.

Preferably, a gas injection port is opened on the side wall of the square tube.

Preferably, both ends of the ventilation pipe are connected with connecting pipes, and the ends of the connecting pipes are connected with connecting hoses through pipe joints.

Preferably, the side walls of the square tube are vertically connected with radiating fins arranged at equal intervals.

Compared with the prior art, the present invention has the following beneficial effects:

1. A ventilation pipe is set through the square tube, and the ventilation pipe is aimed at the molecular lamp for cooling protection, and the temperature of the equipment is reduced by air cooling to meet the temperature requirements during treatment.

2. The working gas emits 308nm light through a fixed high-frequency electric field, and a single 308nm wavelength is the best wavelength for ultraviolet light to treat vitiligo and psoriasis. The distance between the first end face and the second end face is roughly equal, and the light uniform;

3. Further, the gas injection port of the existing product is designed in the middle of the lamp tube, and the gas injection port of this product is designed at the end of the lamp tube, which has the following advantages:

(1) It is convenient for winding; (2) It will not hinder the radiation of 308 excimer light to the outside.

4. Further, a reflective coating is arranged on the first end face, which can not only prevent the light from radiating around, causing the temperature in the device to be too high, but also reflect the light in the direction of the treatment window, which increases the intensity of the light and enhances the treatment effect. , shorten the treatment time.

Description of drawings

Fig. 1 is the structural representation of the front of the present invention;

Fig. 2 is the structural representation of the back of the present invention;

Fig. 3 is the sectional structure schematic diagram of the present invention;

FIG. 4 is a schematic diagram of the structure at A in FIG. 3 .

In the figure: square tube 1, gas injection port 2, negative electrode 3, heat sink 4, first end face 5, positive electrode 6, mounting plate 7, ventilation pipe 8, connecting hose 9, pipe joint 10, connecting pipe 11, first Two end faces 12 .

Detailed ways

The following description serves to disclose the invention to enable those skilled in the art to practice the invention. The preferred embodiments described below are given by way of example only, and other obvious modifications will occur to those skilled in the art.

As shown in Figure 1-4, a single-sided rectangular excimer lamp that emits uniform parallel light includes a negative electrode 3, a positive electrode 6 and a square tube 1. The square tube 1 is a cuboid, with a first end face 5 and a second end face 12. For two non-adjacent planes, the square tube 1 is made of quartz glass. The area occupied by the negative electrode 3 on the second end face 12 is less than 10% of the area of the second end face 12 , the positive electrode 6 is a sheet electrode, and the negative electrode 3 is a parallel winding wire. The surface of the sheet electrode is a specular reflective surface. The dielectric barrier discharge light source is connected to a high-voltage power supply through the negative electrode 3 and the positive electrode 6 to excite the working gas in the square tube to emit light. Since the gas capacity in the square tube 1 is equivalent, and the distance between the end faces of the negative electrode 3 and the positive electrode 6 is approximately equal, the light output evenly. Since one side of the negative electrode 3 is the output end of light, when the negative electrode 3 is set, the area occupied by the negative electrode 3 on the second end face 12 of the square tube 1 is less than 10% of the area of the second end face 12, so that light can be guaranteed. The output efficiency is not less than 90%. In order to realize the output of higher optical power, the positive electrode 6 selects a sheet electrode, which plays the role of reflection and electrode at the same time. For example, the sheet electrode may be implemented on the first end face 5 by means of metal plating.

The square tube 1 includes a first end face 5 and a second end face 12, the positive electrode 6 is arranged on the first end face 5, the negative electrode 3 is arranged on the second end face 12, and the vertical distance from any point on the first end face 5 to the second end face 12 Similarly, the square tube 1 is filled with a working gas, and the working gas is a mixed gas of Xe and Cl. When a power supply voltage is applied to the negative electrode 3 and the positive electrode 6 , the working gas in the square tube 1 is excited to generate light and output it on the second end face 12 . The working gas can be any gas that is excited, for example, it can be a mixed gas of Xe and Cl to obtain light with a wavelength of 308 nm. The principle is: chlorine is a halogen element, and xenon is an inert gas. Under normal circumstances, chlorine and xenon will not react, and there is no compound of chlorine and xenon in nature, but under the action of high voltage and strong electric field, chlorine It can accept one electron of xenon to form a xenon chloride molecule. Xenon chloride is unstable for a short time, and will soon dissociate into chlorine and xenon. This unstable molecule is called an excimer, which is composed of unstable chlorine. The light generated by the excitation of the xenon excimer is ultraviolet light with a wavelength of 308mn. Of course, the working gas can also be a halogen element gas or a combination of multiple halogen element gases, or even a halogen compound gas. The present application does not limit the specific type of the working gas, which can be obtained from row selection.

A ventilation pipe 8 runs through the square pipe 1 . The ventilation pipe 8 is a quartz tube, two ends of the ventilation pipe 8 are connected with a connecting pipe 11 , and the end of the connecting pipe 11 is connected with a connecting hose 9 through a pipe joint 10 . The side walls of the square tube 1 are vertically connected with radiating fins 4 arranged at equal distances. Through the ventilation pipe 8, cold air can be input into the square pipe 1, and the cold air can take away the heat on the pipe wall of the ventilation pipe 8 through the ventilation pipe 8, thereby rapidly cooling the molecular lamp. The connecting hose 9 is used to connect with the wind source. The heat sink 4 adopts a metal sheet with good thermal conductivity, such as a copper sheet. The heat sink 4 can increase the heat dissipation area of the square tube 1 and improve the heat dissipation effect.

The first end surface 5 is provided with a coating for reflecting light, and the second end surface 12 is provided with a coating and an anti-reflection coating for selectively outputting the wavelength of the output light, which can increase the transmittance of 308 nm light and improve the optical power.

A mounting plate 7 is connected to the side wall of the square tube 1 , and the mounting plate 7 is provided with mounting holes. The mounting plate 7 is used to facilitate the installation of the molecular lamp, and the side wall of the square tube 1 is provided with a gas injection port 2 . The coating film provided on the second end face 12 selectively outputs the desired wavelength, for example, selectively outputs the wavelength of 300nm-320nm. The gas injection port 2 of the existing product is designed in the middle of the lamp tube. In this product, the gas injection port 2 is designed at the end of the square tube 1, which has the following advantages: (1) It is convenient for winding; (2) It will not hinder the 308 standard The radiation of molecular light to the outside.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions describe only the principles of the present invention. Without departing from the spirit and scope of the present invention, there are various Variations and improvements are intended to fall within the scope of the claimed invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A rectangular excimer lamp that emits uniform parallel light on one side, comprising a negative electrode (3), a positive electrode (6) and a square tube (1), the square tube (1) comprising a first end face (5) and The second end face (12), the positive electrode (6) is arranged on the first end face (5), the negative electrode (3) is arranged on the second end face (12), and the first end face (5) is on the The vertical distance from one point to the second end face (12) is the same, the square tube (1) is filled with working gas, and when a power supply voltage is applied to the negative electrode (3) and the positive electrode (6), the square tube The working gas in (1) is excited to generate light and output on the second end face (12), characterized in that a ventilation pipe (8) runs through the square pipe (1). 2 . The rectangular excimer lamp with uniform parallel light emitted from one side according to claim 1 , wherein the square tube ( 1 ) is a rectangular parallelepiped, and the first end face ( 5 ) and the second end face ( 12) are two non-adjacent planes, and the square tube (1) is made of quartz glass. 3. The rectangular excimer lamp with uniform parallel light emitted from one side according to claim 1, wherein the area occupied by the negative electrode (3) on the second end face (12) is smaller than the second end face (12). 12) 10% of the area, the positive electrode (6) is a sheet electrode, and the negative electrode (3) is a parallel winding wire. 4 . The rectangular excimer lamp of claim 3 , wherein the surface of the sheet electrode is a specular reflective surface. 5 . 5 . The rectangular excimer lamp that emits uniform parallel light on one side according to claim 1 , wherein the working gas is a mixed gas of Xe and Cl. 6 . 6 . The rectangular excimer lamp of claim 1 , wherein the first end face ( 5 ) is provided with a coating for reflecting light, and the second end face (12) is provided with a coating film and an anti-reflection film that selectively output the wavelength of the output light. 7 . The rectangular excimer lamp with uniform parallel light emitted from one side according to claim 1 , wherein a mounting plate ( 7 ) is connected to the side wall of the square tube ( 1 ), and the mounting plate (7) is provided with mounting holes. 8 . The rectangular excimer lamp of claim 1 , wherein a gas injection port ( 2 ) is provided on the side wall of the square tube ( 1 ). 9. The rectangular excimer lamp that emits uniform parallel light on one side according to claim 1, wherein the two ends of the ventilation pipe (8) are connected with a connecting pipe (11), and the connecting pipe (11) The end of the tube is connected with a connecting hose (9) through a pipe joint (10). 10 . The rectangular excimer lamp with uniform parallel light emitted from one side according to claim 1 , wherein the side walls of the square tube ( 1 ) are vertically connected with radiating fins ( 4 ) arranged at equal distances. 11 . .

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