KR20020048570A - Apparatus to protect resonator for the microwave lighting system - Google Patents

Abstract

PURPOSE: An apparatus for protecting a resonator of an illuminator using microwave is provided to improve the durability of the resonator by forming a protecting film inside or outside of the resonator. CONSTITUTION: Microwave generated from a magnetron(51) is transmitted within a resonator(60) through a waveguide(53). A bulb(55) generates light by transmitting microwave energy to a gas filled therein. The generated light is transmitted to an outside through a reflector(57) and a cover glass(58). The resonator(55) covers the waveguide(53) and the front of the bulb(55) to block the microwave and to penetrate the light emitted from the bulb(55). A protecting film is made of an inner film and an outer film so as to have a net unit broken with outer space. The net unit of the resonator(60) is inserted into a space between the inner film and the outer film. The microwave transmitted through the waveguide(53) passes through freely the inner film of the protecting film and is broken by the net unit.

Description

Resonator protection device for lighting equipment using microwaves {APPARATUS TO PROTECT RESONATOR FOR THE MICROWAVE LIGHTING SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luminaire using microwaves, and more particularly, to a resonator protection device made of a metal mesh to protect a resonator that blocks microwaves and passes light.

Microwave luminaires are devices that apply microwaves to an electrodeless plasma bulb to emit visible or ultraviolet light therefrom. The microwave luminaire has a longer lamp life and superior lighting effects than conventional incandescent or fluorescent lamps.

1 is a cross-sectional view showing the internal structure of a lighting device using a general microwave.

The luminaire using microwaves includes a magnetron (1) for generating microwaves, a waveguide (3) for transmitting microwaves from the magnetron (1), and a material enclosed therein by microwave energy transmitted through the waveguide (3). The light bulb 5 generates light while being plasmaized, and the resonator 20 covers the waveguide 3 and the light bulb 5 in front of the light bulb 5 to pass the light emitted from the light bulb 5 while blocking the microwaves. do.

Such a lighting apparatus using microwaves includes a high pressure generator 7 for boosting the commercial AC power to the magnetron 1 at a high pressure in the basic structure as described above, and the magnetron 1 and the high pressure generator 7. A cooling device 9 for cooling, a reflector 11 for intensively reflecting the light generated by the bulb 5 forward, and a light bulb for cooling the heat generated while rotating the light bulb 5 to emit light. A control unit (not shown) for controlling various elements including the motor 13 and the motor shaft 15 and the high pressure generator 7, the cooling device 9, and the like is further configured.

When the lighting apparatus using the microwave as described above inputs a driving signal to the high pressure generator 7 in the control unit, the high pressure generator 7 multiplies AC power from the outside and supplies the boosted high pressure to the magnetron 1.

The magnetron 1 generates microwaves having a very high frequency while oscillating by the high pressure supplied from the high pressure generator 7, and the generated microwaves are radiated into the resonator 20 through the waveguide 3. The encapsulated material in (5) is discharged to generate light having a unique emission spectrum.

As such, the light generated from the bulb 5 is reflected forward through the mirror 12 and the reflector 11 to illuminate the space.

Figure 2 is a perspective view showing a resonator of the prior art used in a luminaire using a microwave as described above.

The resonator 20 has a metal mesh shape and is assembled to the outlet 3a side of the waveguide 3 to confine the microwaves transmitted through the waveguide 3 so that microwave energy is emitted from the light bulb 5. The light emitted from the light bulb 5 is transmitted to the outside while preventing the leakage of microwaves to the outside at the same time.

Referring to FIG. 2, the resonator 20 is formed in a cylindrical shape with one side open, and a network portion 21 having a plurality of holes 21a formed therein to block light while passing microwaves. The hole is not formed in the open side so as to be fixed to the outlet portion of the waveguide 3 is composed of a fixed ring portion 25 made of a band shape.

When the fixed ring portion 25 is installed in the waveguide 3, a plurality of cutouts 25a are formed in the longitudinal direction so that they can be expanded and easily assembled.

However, the resonator of the luminaire using the microwave of the prior art as described above is made of a metal network structure so that it is installed to cover the outside of the waveguide 3 and the light bulb 5, the light bulb in a state where the metal network is exposed to air When (5) is turned on at a high temperature, there is a problem in that the lifetime is shortened, such as discoloration or corrosion while causing a reaction with a specific gas.

The present invention has been made to solve the above problems, by forming a protective film to allow the light emitted from the light bulb inside or outside the metal mesh freely to improve the durability of the resonator to increase the lifetime and at the same time the reliability of the microwave blocking An object of the present invention is to provide a resonator protection device for a luminaire using microwaves.

1 is a cross-sectional view showing a lighting device using a microwave of the prior art,

2 is a perspective view showing a resonator of the prior art,

3 is a cross-sectional view of an essential part of a microwave luminaire including a resonator protection device according to the present invention;

4 is a sectional view showing a resonator protection device of a first embodiment according to the present invention;

5 is a sectional view showing a resonator protection device of a second embodiment according to the present invention;

6 is a sectional view showing a resonator protection device of a third embodiment according to the present invention;

7 is a sectional view showing a resonator protection device of a fourth embodiment according to the present invention.

<Explanation of symbols for the main parts of the drawings>

51: magnetron 53: waveguide

55 light bulb 57 reflector

58: cover glass 60: resonator

61: reticular portion 63: fixed ring

65, 65 ', 65 ", 70: protective film 66: outer film

67: inner film 70a: hole

In the resonator protection device for a luminaire using a microwave of the present invention for realizing the above object, in the microwave luminaire comprising a resonator made of a metal mesh so as to block the microwave and transmit the light emitted from the bulb, The resonator is provided with a protection member on at least one side of the outside or the inside so as to protect the metal mesh, the protection member is characterized in that made of a material that can transmit the light emitted from the light bulb to the outside. .

In addition, the resonator protection device of the luminaire using the microwave of the present invention for realizing the above object, in the microwave luminaire comprising a resonator made of a metal mesh so as to block the microwave and transmit the light emitted from the bulb The resonator may include a protection member integrally injection-molded in the metal mesh to protect the metal mesh so that the metal mesh is inherent, and the protection member may be made of a material through which light emitted from the bulb may be transmitted to the outside. It is possible, characterized in that made.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

3 is a cross-sectional view of a luminaire using microwaves provided with the resonator protection device of the first embodiment according to the present invention, and is a detailed cross-sectional view showing the resonator protection device of the first embodiment according to the present invention.

Referring to FIG. 3, in the luminaire using microwaves, when microwaves generated from the magnetron 51 are transferred into the resonator 60 through the waveguide 53, the material encapsulated in the bulb 55 is discharged by the microwave energy. Light is generated, and the generated light is transmitted to the outside through the reflector 57 and the cover glass 58. At this time, the resonator 55 is covered in front of the waveguide 53 and the light bulb 55 so that the light emitted from the light bulb 55 passes while blocking the microwaves.

Here, the resonator protection device of the first embodiment according to the present invention comprises a protective film 65 formed in a double structure inside and outside to protect the network portion 61 of the resonator 60.

That is, the passivation layer 65 has a double structure of the inner layer 67 and the outer layer 66, and the reticular portion 61 of the resonator 60 is inserted into the space therebetween, thereby forming the reticular portion 61. Is to completely block the outside space.

The protective film 65 as described above should be made of a material through which microwaves transmitted through the waveguide 53 and light emitted from the light bulb 55 can be freely transmitted. It is formed of glass or the like.

Here, the microwave transmitted through the waveguide 53 passes freely through the inner layer 67 of the passivation layer 65 but is blocked by the reticular portion 61 between the passivation layer 65 so that the microwave does not leak to the outside.

In addition, the protective layer 65 is connected to the inner layer 67 and the outer layer 66 at the fixed ring portion 63 side where the reticular portion is not formed so as to be fixed to the cylindrical outlet portion 53a of the waveguide 53. The space in which the network portion 61 is embedded is formed to be sealed.

As described above, the passivation layer 65 has a double structure inside and outside the resonator 60 such that the mesh 61, ie, the reticular portion 61 is not exposed to air, thereby easily discoloring or corroding the reticular portion 61. It is possible to prevent the life of the resonator 60 by being prevented.

In addition, the protective film 65 has a double structure to block the force applied to the resonator 60 from the inside or the outside to prevent the reticular portion 65 of the resonator 60 from being easily damaged.

5 is a sectional view showing a resonator protection device of a second embodiment according to the present invention.

The resonator protecting device of the second embodiment according to the present invention is formed in the same cylindrical shape as the resonator 60, and is composed of a protective film 65 'installed as if it is covered outside the reticular portion 61 of the resonator 60.

The protective film 65 ′ is fixed to the outlet portion 53a of the waveguide 53 with a fixing band 68, together with the resonator 60, on the outside of the fixed ring portion 63 of the resonator 60.

Of course, the protective film 65 'is also formed of quartz, ceramic, tempered glass or the like which is transparent and has heat resistance.

The protective film 65 ′ of the second embodiment can prevent the resonator 60 from being damaged or deformed by an external force while blocking the outer space and the inner space of the resonator 60.

6 is a sectional view showing a resonator protection device of a third embodiment according to the present invention.

The resonator protection device of the third embodiment according to the present invention is inserted into the resonator 60 differently from the protection film of the second embodiment described above provided outside the resonator.

That is, the protection device of the third embodiment is made of a protective film 65 ″ formed in a cylindrical shape with one side open and the other closed, like the resonator 60, and inserted into the reticular portion 61 of the resonator 60.

The protective film 65 ″ may minimize the damage or deformation of the resonator 60 by external force while blocking the external space and the internal space of the resonator 60.

7 is a sectional view showing a resonator protection device of a fourth embodiment according to the present invention.

The first to third embodiments have a structure in which the resonator and the protective film are separated, whereas the protective film 70 of the fourth embodiment of the present invention is an insert injection molding method in which the resonator 60 is embedded. It is molded to have an integral structure with the reticular portion 61 of the resonator 60.

The protective film 70 is also made of a transparent, heat-resistant material such as quartz, ceramic, tempered glass so that the light emitted from the light bulb 55 can be transmitted to the outside.

In addition, the protective layer 70 may be provided with a plurality of holes 70a penetrating in and out so that the air passes through the resonator 60 while preventing the reticular portion 61 from directly contacting the air.

The hole 70a of the passivation layer 70 is formed to coincide with the hole 61a formed in the reticular portion 61 of the resonator 60.

The protective film 70 of the fourth embodiment as described above can prevent the reticular portion 61 from being easily discolored or corroded by preventing the reticular portion 61 of the resonator 60 from being exposed to air.

In addition, the protective film 70 is formed with a plurality of holes (70a) in communication with the outside can be easily released to the heat generated in the resonator 60 to the outside.

The resonator protection device of the luminaire using the microwave of the present invention constructed and operated as described above has a protective film formed inside or outside the resonator, so that the durability of the resonator is improved, so that the life is long and the reliability of the microwave cutoff is also increased. This provides an advantage.

Claims (7)

A microwave luminaire comprising a resonator made of a metal mesh to block microwaves and transmit light emitted from a light bulb. The resonator is provided with a protective member on at least one side of the outer or inner side to protect the metal mesh, the protective member is made of a material that is made of a material that can transmit the light emitted from the bulb to the outside Resonator protection device of luminaire used. A microwave luminaire comprising a resonator made of a metal mesh to block microwaves and transmit light emitted from a light bulb. The resonator includes a protective member integrally injection-molded to protect the metal mesh so that the metal mesh is inherent, and the protective member is made of a material through which light emitted from the light bulb can be transmitted to the outside. Resonator protection device of lighting equipment using. The method according to claim 1 or 2, The protective member is a resonator protection device for a luminaire using a microwave, characterized in that formed of any one of transparent, heat-resistant quartz, ceramic, tempered glass. The method of claim 1, The protective member is formed on the inner and outer sides of the metal mesh, respectively, the resonator protection device for a luminaire using a microwave, characterized in that a double protection structure. The method of claim 4, wherein The protection member is a resonator protection device for a luminaire using a microwave, characterized in that the inside of the double protection structure is formed to be sealed. The method of claim 1, The protection member is formed of the same cylindrical structure as the resonator and the resonator protection device for a luminaire using a microwave, characterized in that provided on either side of the inside and the outside of the metal mesh. The method of claim 2, The protective member is a resonator protection device for a microwave apparatus using a microwave, characterized in that a plurality of holes penetrated from the inside to the outside.