KR100492607B1 - Electrodeless lighting system - Google Patents

Abstract

The present invention relates to an electrodeless lighting device, comprising: a magnetron for oscillating a microwave by an applied high voltage; A waveguide for guiding the microwaves oscillated from the magnetron; A resonator communicatively coupled to an outlet of the waveguide to postact guided microwaves; A light bulb which is plasma-produced by microwaves which are positioned inside the resonator to generate light; A dielectric element inserted and inserted through one side of the waveguide and / or resonator to be detachably coupled to induce impedance matching, a solenoid for operating the dielectric element in a direction to be removed from the waveguide and / or the resonator, and the dielectric element An impedance controller comprising an elastic body for operating the antenna in a direction inserted into the waveguide and / or the resonator; A control unit for inserting and removing the dielectric element of the impedance controller; It is configured to include and has the effect of improving the reliability of the product by preventing the magnetron from being damaged by the microwaves reflected back by matching the required impedance of each state of the bulb inside the resonator.

Description

Electrodeless Lighting Equipment {ELECTRODELESS LIGHTING SYSTEM}

The present invention relates to an electrodeless lighting device, and more particularly, to prevent the magnetron from being damaged and the resonance efficiency is reduced by the microwaves reflected by the imbalance of impedances required during initial and stable light emission. It relates to an electrodeless lighting device for.

In general, the ELECTRODELESS LIGHTING SYSTEM transmits the electromagnetic energy generated from the microwave generator to the resonator through the waveguide, which is applied to the electrodeless bulb installed inside the resonator so that the bulb emits visible or ultraviolet light. As an illuminating device, it has a long life compared to incandescent and fluorescent lamps, and has an excellent effect of lighting.

Hereinafter, a conventional electrodeless illuminator will be described with reference to the drawings. 1 is a longitudinal cross-sectional view of a conventional electrodeless illuminator, Figure 2 is a partial perspective view of a conventional electrodeless illuminator.

As shown in the figure, the magnetron 102 mounted inside the casing 101 to generate microwaves, the high pressure generator 103 for boosting and supplying commercial AC power to the magnetron 102 at high pressure, and the magnetron ( The microwave generating unit 102a of the 102 is communicatively coupled to the waveguide 104 which delivers the microwave generated by the microwave generating unit 102a, and a light emitting material is enclosed therein and transmitted through the waveguide 104. The light bulb 105, which emits light while the material encapsulated by microwave energy, generates plasma, is covered in front of the waveguide 104 and the light bulb 105, and the light emitted from the light bulb 105 is blocked while the microwave is blocked. A resonator 106 for passing through, a dielectric mirror 108 for receiving the resonator 106 and intensively reflecting light generated from the light bulb 105, and inside the resonator 106 behind the light bulb 105; On A dielectric mirror 108 that reflects light while passing through microwaves, and a resonator 106 around the resonator 106 to reflect light generated by the light bulb 105 and passed through the resonator 106. A semi-elliptical reflector (REFLECTOR) 107 is installed to wrap, and a cooling fan assembly 113 provided on one side of the casing 101 to cool the magnetron 102 and the high-pressure generator 103. .

In the drawings, reference numeral 109 denotes an electric bulb rotation motor, 109a a motor shaft, 110 a fan motor, 111 a cooling fan, 112 a cooling fan housing, 112a a suction hole, and 112b a discharge hole.

By such a configuration, the conventional electrodeless lighting device boosts the applied commercial power in the high pressure generator 107 to supply the boosted high voltage to the magnetron 101, and the magnetron 101 supplies the high voltage generator 103. Oscillation by the high pressure supplied from generates microwaves having a very high frequency, and the generated microwaves are discharged into the resonator 106 through the waveguide 104 to discharge the encapsulated material in the bulb 105 It generates light having a unique emission spectrum, and the light generated from the bulb 105 is reflected forward through the dielectric mirror 108 and the reflector 107 to illuminate the space.

However, the impedance inside the resonator 106 varies greatly depending on the state of the bulb 105 inside the resonator 106. That is, since the impedance of the cold state in which the light bulb 105 does not emit light and the state in which the discharge is started inside the light bulb 105 immediately after light emission and the state in which the light bulb 105 maintains stable light emission differ greatly, When matching for a particular state, it is difficult to simultaneously satisfy the impedance matching in the resonator 106 according to the state of each bulb 105 because impedance matching in other states is significantly shifted.

As a result, the light bulb 105 is turned on, and even when the initial discharge occurs, the light bulb 105 may be turned to a stable state and then the light bulb 105 may be turned off. There arises a problem that the overall efficiency is greatly reduced.

In addition, since the microwave is oscillated in the magnetron 102 so that impedance matching is made to the stable light emitting state of the light bulb 105, microwaves that are not exhausted by the light bulb 105 are reflected before the light emitting state of the light bulb 105 is reflected. A problem arises in that the magnetron 102 is broken and the service life is reduced again.

According to the present invention devised in order to solve the above problems, there is provided an electrodeless illuminator for preventing the damage of the magnetron and the magnetron by the microwaves reflected back by properly matching the required impedance that changes according to the state of the bulb. The purpose.

The present invention to achieve the above object, the magnetron for oscillating the microwave by the applied high voltage; A waveguide for guiding the microwaves oscillated from the magnetron; A resonator communicatively coupled to an outlet of the waveguide to postact guided microwaves; A light bulb which is plasma-produced by microwaves which are positioned inside the resonator to generate light; A dielectric element inserted and inserted through one side of the waveguide and / or resonator to be detachably coupled to induce impedance matching, a solenoid for operating the dielectric element in a direction to be removed from the waveguide and / or the resonator, and the dielectric element An impedance controller comprising an elastic body for operating the antenna in a direction inserted into the waveguide and / or the resonator; A control unit for inserting and removing the dielectric element of the impedance controller; Provides an electrodeless illuminator characterized in that it comprises a.

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In addition, the dielectric device is preferably formed of a ceramic.

In addition, the control unit is preferably provided in the waveguide and / or resonator a sensor for controlling the impedance controller by the microwave is reflected back after the oscillation in the magnetron.

Hereinafter, the electrodeless lighting device of the present invention will be described in detail with reference to the accompanying drawings. Figure 3 is a longitudinal sectional view of the electrodeless illuminator of the present invention, Figure 4 is a partial perspective view of the electrodeless illuminator of the present invention, Figure 5 is a partial cross-sectional view of AA of Figure 4, Figure 6 is a bulb for the electrodeless illuminator of the present invention Fig. 7 is an operational state diagram of the impedance controller in the initial state, and Fig. 7 is an operational state diagram of the impedance controller in the light-emitting state of the bulb for the electrodeless illuminator of the present invention.

As shown in the drawing, the conventional electrodeless lighting device is fixed to a high voltage generator (HIGH VOLTAGE GENERATING UNIT; 3) on one side of the case (CASE) 1 for boosting a commercial AC power to a high voltage, and the high voltage on the other side thereof. A magnetron (MAGNETRON) 2 for generating electromagnetic waves with a high voltage generated by the generator 3 is fixed.

In addition, a waveguide (WAVE GUIDE) 4 for guiding the electromagnetic wave MICRO WAVE generated from the magnetron 2 is provided at the inner upper center of the case 1 between the magnetron 2 and the high voltage generator 3. It is fixed so that an upper end part may be inserted in the opening part 1a formed in (1).

In addition, the shaft shaft 4a is rotatably coupled to the shaft hole 4a formed in the center of the waveguide 4 in the vertical direction, and is thus moved upwardly outward through the opening 1a formed in the case 1. A circular bulb BULB 6 in which a substance emitting light by electromagnetic wave energy is enclosed is fixed to the protruding upper end portion, and a lowering end portion of the protruding upper end portion 6 is cooled to rotate the rotating shaft 5. The bulb rotation motor 8 connected to the motor shaft 8a by the connecting pipe 7 is coupled.

The upper end of the waveguide 4 located outside the case 1 blocks the leakage of electromagnetic waves flowing through the waveguide 4 and allows the light emitted from the light bulb 6 to pass. (RESONATOR; 9) is coupled to surround the bulb 6, the periphery of the coupled resonator (9) is generated in the bulb (6) to reflect the light passing through the resonator (9) 9) The reflection shade (REFLECTOR) 10 of the semi-elliptical body is installed to surround the fixed.

Particularly, the late dielectric element 21 for exhausting the microwaves through one side of the waveguide 4 may be coupled to the lead dielectric material 20 to induce impedance matching and the impedance controller 20. A control unit (not shown) is provided for controlling the introduction and withdrawal of late dielectric elements.

The impedance controller 20 is provided with a dielectric element 21 for drawing in and out of the waveguide 4 to exhaust microwaves, and a transfer means for linearly reciprocating the dielectric element 21.

As shown in FIG. 7, the conveying means includes a spring member 22 for maintaining the dielectric element 21 introduced into the waveguide, and a magnet coupled to one side of the dielectric element 21. It is preferable that it consists of the solenoid 25 which consists of the rod 23 and the winding coil 24 wound on the outer peripheral surface of the conveyance bar 23. As shown in FIG. In FIG. 7, reference numeral 26 denotes a controller case.

The dielectric element 21 is preferably formed of a ceramic member capable of exhausting microwaves.

In addition, the impedance controller 20 is not limited to one side of the waveguide 4 and is not hypothesized, but the same effect may be obtained even when the delivered microwave is attached to one side of the resonator 4 where the microwave is excited.

The control unit (not shown) for controlling the impedance controller 20 is a time when the impedance matching of the bulb 5 to start to emit light to a stable light emission state is almost completely performed by the microwave generated from the magnetron 2. It is to control the removal of the dielectric element 21 according to the time zone by calculating the time.

More preferably, the controller (not shown) hypothesizes a sensor (not shown) for the detection of microwaves in the waveguide (4) and / or the resonator (6), to the detection signal input by the sensor The dielectric element 21 is controlled to be drawn in and out.

In addition, a fan motor 11, a cooling fan 12, and a fan housing FAN HOUSING to cool the magnetron 2 and the high voltage generator 3 in the lower side of the case 1. Cooling means 14 composed of 13 are provided.

In the figure, reference numeral 4a denotes a main body portion, 4b a lid portion, 4c an inlet portion, 4d an outlet portion, and 4e a controller insertion hole.

By such a configuration, the conventional electrodeless lighting device boosts the applied commercial power in the high pressure generator 7 to supply the boosted high voltage to the magnetron 1, and the magnetron 2 supplies the high voltage generator 3 The oscillation is generated by the high pressure supplied from the microwave to generate a microwave having a very high frequency, and the generated microwave is radiated into the resonator 6 through the space inside the waveguide 4 to discharge the encapsulated material in the bulb 5. Discharge to generate light with a unique emission spectrum.

At this time, the microwave oscillated from the magnetron 2 is oscillated so as to match the required impedance when the bulb 5 maintains a stable light emission state, and thus, in the initial state or the state in which the light bulb 5 starts to emit light. The remaining extra microwave other than the microwave matching the impedance is reflected back to the magnetron 2 and broken.

In order to prevent the microwaves from being reflected and returned to the magnetron 2, and to properly match the impedance required to emit light of the light bulb, the dielectric element of the impedance controller 20 may be used at the initial stage of light emission of the light bulb 5. 21 is burnt by the elastic body 22 so that all of the microwaves oscillated in the magnetron 2 are exhausted by being inserted into the waveguide.

Then, the control unit for detecting the time control to control the divided by the sequential time step from the initial state of the light bulb (5) to the state of stable light emission or the microwaves reflected back and sensing control by the detection signal (not shown) The solenoid 25 of the impedance controller 20 is operated to gradually pull out the dielectric element 21 from the inside of the waveguide 4 so that the dielectric element 21 can be moved to the waveguide when the light bulb is fully emitted. 4) It is completely withdrawn so that the microwaves generated from the magnetron 2 are exhausted to emit light bulbs, thereby preventing the magnetron 2 from being damaged by the microwaves to be reflected.

As described above, according to the present invention, by matching the required impedance according to each state of the bulb inside the resonator, the magnetron is prevented from being damaged by the reflected microwaves, thereby improving the reliability of the product. Have

1 is a longitudinal sectional view of a conventional electrodeless illuminator,

2 is a partial perspective view of a conventional electrodeless illuminator,

3 is a longitudinal sectional view of the electrodeless illuminator of the present invention;

4 is a partial perspective view of the electrodeless illuminator of the present invention;

5 is a partial cross-sectional view A-A of FIG.

6 is an operational state diagram of the impedance controller of the initial state of the bulb for the electrodeless illuminator of the present invention;

7 is an operational state diagram of the impedance controller in the light-emitting state of the bulb for the electrodeless illuminator of the present invention.

* Description of the main parts of the drawings *

1: case 2: magnetron

3: high voltage generator 4: waveguide

6: bulb 9: resonator

20: impedance controller 21: dielectric element

22: spring member 23: feed bar

24: winding coil 25: solenoid

26: controller case

Claims (6)

A magnetron for oscillating the microwave by an applied high voltage; A waveguide for guiding the microwaves oscillated from the magnetron; A resonator communicatively coupled to an outlet of the waveguide to postact guided microwaves; A light bulb which is plasma-produced by microwaves which are positioned inside the resonator to generate light; A dielectric element inserted and inserted through one side of the waveguide and / or resonator to be detachably coupled to induce impedance matching, a solenoid for operating the dielectric element in a direction to be removed from the waveguide and / or the resonator, and the dielectric element An impedance controller comprising an elastic body for operating the antenna in a direction inserted into the waveguide and / or the resonator; A control unit for inserting and removing the dielectric element of the impedance controller; Electrodeless lighting equipment, characterized in that configured to include. delete delete The method of claim 1, The dielectric device is an electrodeless lighting device, characterized in that formed of ceramic. delete The method of claim 1, The control unit is an electrodeless lighting device, characterized in that the sensor is provided inside the waveguide and / or resonator for controlling the impedance controller by the microwave is reflected back after the oscillation in the magnetron.