KR20030064110A - Cooling apparatus for microwave lighting system - Google Patents

Abstract

PURPOSE: A cooling apparatus is provided to radiate heat transferred from the magnetron or high voltage generator to the casing even when the casing is formed into a closed type, while preventing ingress of water into the casing. CONSTITUTION: An electrodeless illumination system comprises a casing(10); an electric bulb(5) arranged in the outside of the casing and which has a material for generating light; a resonator(6) arranged in the outside of the casing in such a manner that the resonator accommodates the electric bulb, cuts off microwave and allows light emitted from the electric bulb to exit; a magnetron(20) including an anode, a cathode and a magnet and which is mounted in the casing in such a manner that the magnetron generates microwave when the cathode is applied with a current; and a waveguide(40) interposed between the magnetron and the resonator and which guides microwave to the resonator. A cooling apparatus includes a blower fan(60) mounted on the casing and which sucks external air and blows the sucked air to the outer surface of the casing.

Description

COOLING APPARATUS FOR MICROWAVE LIGHTING SYSTEM

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for an electrodeless lighting system, and more particularly to a cooling device for an electrodeless lighting system that can prevent rainwater or foreign matter from penetrating when installed outdoors.

In general, a luminaire using microwaves is a device that applies microwaves to an electrodeless plasma bulb and emits visible or ultraviolet light therefrom, and has a longer lamp life and superior lighting effects than conventional incandescent or fluorescent lamps. .

1 is a longitudinal sectional view showing an example of an electrodeless illumination system.

As shown in the drawing, the conventional electrodeless illumination system includes a magnetron 2 mounted inside the casing 1 to generate microwaves, and a high voltage generator 3 for boosting and supplying commercial AC power to the magnetron 2 at a high pressure. ), A waveguide (4) communicating with the outlet of the magnetron (2) and delivering microwaves generated by the magnetron (2), and encapsulated by microwave energy enclosed with a luminescent material therein and transmitted through the waveguide (4). A light bulb 5 which emits light while being excited by a substance is plasma-covered, and is disposed in front of the waveguide 4 and the light bulb 5 to block microwaves while passing light emitted from the light bulb 5. A resonator 6, a reflector 7 which receives the resonator 6 and concentrates and reflects light generated from a light bulb, and a magnetron 2 and a high pressure generator 3 on one side of the casing 1. Cooling fan (8) It is composed of.

The casing 1 forms an air inlet 1a at the lower half corresponding to the cooling fan 8, accommodates the cooling fan 8, and communicates with the air inlet 1a from side to side. 1b) is formed, and air outlets 1c and 1c are formed in the upper half of the casing 1 so as to correspond to both ends of the air flow paths 1b and 1b.

The magnetron 2 and the high pressure generator 3 are positioned between both ends of the air passages 1b and 1b and the corresponding air outlets 1c and 1c, respectively, and are coupled to both sides of the waveguide 4, respectively. have.

In the drawing, reference numeral 9 denotes a dielectric mirror that passes microwaves but reflects light, M1 denotes a bulb motor for rotating a light bulb, and M2 denotes a fan motor for rotating a cooling fan.

The conventional electrodeless illumination system as described above operates as follows.

That is, when the control unit inputs a driving signal to the high pressure generator 3, the high pressure generator 3 boosts AC power to supply the boosted high pressure to the magnetron 2, and the magnetron 2 oscillates by the high pressure. Generates microwaves with a high frequency, the microwaves radiate through the waveguide 4 into the resonator 6 to discharge the encapsulated material in the bulb 5 to generate light having a unique emission spectrum, This light illuminates the space while reflecting forward by the reflector 7 and the dielectric mirror 9.

At this time, high heat is generated in the magnetron 2 and the high-pressure generator 3, and in particular, in the magnetron 2, the internal temperature of the casing 1 is increased while high-frequency energy that is not partially released from the high-frequency energy generated by the hot electrons is lost. Therefore, the cooling fan 8 was operated to blow external cold air into the casing 1 to cool the heat generated by the magnetron 2.

However, since the cooling apparatus of the conventional electrodeless lighting system as described above uses the cooling fan 8, the air inlet 1a and the air inlet 1a and the casing 1 are circulated so that the air can be circulated by the cooling fan 8. When the lighting system is installed outdoors as the air outlet 1c is provided, rain water or other foreign matter enters the inside of the casing 1 together with the cold air through the air inlet 1a and the air outlet 1c. There was a risk of damaging various parts.

The present invention has been made in view of the problems with the conventional cooling device of the electrodeless lighting system, and to provide a cooling device for a lighting system using microwaves that do not have a risk of rain or foreign matter penetrating when installed outdoors. There is a purpose.

1 is a longitudinal sectional view showing an example of a conventional electrodeless illumination system.

Figure 2 is a longitudinal sectional view showing an example of the electrodeless illumination system of the present invention.

Figure 3 is a longitudinal sectional view showing a casing of the present electrodeless lighting system.

Figure 4 is a longitudinal sectional view showing a modification to the casing of the electrodeless lighting system of the present invention.

Figure 5 is a longitudinal sectional view showing a cooling device of the high-pressure generator in the electrodeless lighting system of the present invention.

Figure 6 is a longitudinal sectional view showing a modification of the present electrodeless lighting system.

Figure 7 is a longitudinal sectional view showing a waveguide in the electrodeless illumination system of the present invention.

8 is a longitudinal sectional view showing a modification of the fan housing in the electrodeless lighting system of the present invention.

** Description of symbols for the main parts of the drawing **

10 casing 11: waveguide through hole

12: magnetron receiving space 13: other parts receiving space

20: magnetron 21: outlet

30: high pressure generator 40: waveguide

41: hollow part 42: inlet part

43: bulb shaft through hole 44: outlet

50: fan housing 51: air intake

52: air outlet 60: blowing fan

70: partition portion 71: waveguide mounting hole

72: cable through hole 90: cooling fin

110: first heat pipe 120: second heat pipe

130: connecting member M1: bulb motor

M2: Fan Motor

In order to achieve the object of the present invention, there is provided a casing having a predetermined receiving space to form a sealed, and a light emitting material provided to the outside of the casing having a sealing material to generate light while plasmaizing by microwaves, and to accommodate the light bulb It is installed outside the casing and has a resonator through which light emitted from the bulb passes while blocking the microwaves, and is mounted in the housing space of the casing to generate microwaves when applying current to the cathode part, having an anode part, a cathode part, and a magnet. In an electrodeless illumination system comprising a magnetron and a waveguide in communication between the outlet of the magnetron and the resonator to guide microwaves to the resonator, the external air of the casing is sucked by blowing external air to one side of the casing. Cooling of the electrodeless lighting system, characterized by comprising a cooling fan Provide value.

In addition, the casing is provided with a predetermined accommodating space and is sealed, and the bulb is provided outside of the casing with a sealing material to generate light while plasmaizing by microwaves, and the microwave is installed outside the casing to accommodate the bulb. A resonator through which light emitted from the light bulb passes while blocking the magnetron, and a magnetron mounted on the accommodating space of the casing to generate microwaves when an electric current is applied to the cathode including an anode, a cathode, and a magnet, and an outlet of the magnetron. An electrodeless illumination system comprising a waveguide in communication with a resonator and guiding microwaves to a resonator, comprising: a fan housing coupled to an outside of the casing to correspond to an air outlet toward the casing; It includes a blower fan that blows outside air to the outer surface of the casing Provided is a cooling device for an electrodeless illumination system.

Hereinafter, a cooling apparatus of an electrodeless illumination system according to the present invention will be described in detail based on an embodiment shown in the accompanying drawings.

Figure 2 is a longitudinal sectional view showing an example of the electrodeless lighting system of the present invention, Figure 3 is a longitudinal sectional view showing a casing, Figure 4 is a longitudinal sectional view showing a modification to the casing, Figure 5 is a cooling device of a high-pressure generator 6 is a longitudinal sectional view showing a modification, FIG. 7 is a longitudinal sectional view showing a waveguide, and FIG. 8 is a longitudinal sectional view showing a modification of the fan housing.

As shown therein, the cooling apparatus of the electrodeless illumination system according to the present invention includes a casing 10 having a predetermined accommodation space, a magnetron 20 mounted inside the casing 10 to generate microwaves, A high pressure generator 30 for boosting and supplying commercial AC power to the magnetron 20 at high pressure, a waveguide 40 for communicating microwaves generated by the magnetron 20 by communicating with an outlet of the magnetron 20; The material encapsulated by the microwave energy is covered with light bulbs 5 that generate light while being excited and converted into plasma, and are placed in front of the waveguide 40 and the light bulbs 5 to block the microwaves while passing the light through the mesh. A resonator 6 to be formed, a reflector 7 accommodating the resonator 6 to intensively reflect light generated from the light bulb 5, and a fan housing 50 coupled to one side of the casing 10; Inside the fan housing 50 Complex to include a blowing fan 60 that sucks the external air blown into the outer surface of the casing (10).

The casing 10 is formed of a material having high thermal conductivity and forms a waveguide through-hole 11 on the front surface thereof to assemble the outlet portion 44 of the waveguide 40 together with the bulb 5.

In addition, the casing 10 has an accommodating space for accommodating each of the above-described parts therein, and is formed in a sealed type, and the accommodating space has a magnetron accommodating space for separating and accommodating the magnetron 20 from other components. 12) and the partition part 1 which divides into the other components accommodating space 13, such as the high-pressure generator 30 and the electric bulb motor M1, is formed.

The partition part 70 is formed of a heat insulating material with a waveguide mounting hole 71 in the middle thereof as shown in FIG. 3.

Here, the partition part 70 may be separately assembled by fabricating a plate-shaped member surrounding the middle portion of the waveguide 40 separately, or may be integrally formed with the waveguide 40 when the waveguide 40 is manufactured, and the casing 10 together. It is also possible to integrally mold together, in consideration of the mounting portion 71 of the waveguide 40 in advance in the manufacture of the casing (10).

In addition, the partition portion 7 may be interposed between the waveguide 40 and the magnetron 20 in contact therewith as shown in FIG. 4, and in this case, the partition portion 70 may be separately manufactured and then assembled or the waveguide 40 may be disposed separately. It may be molded integrally on one side of the).

In addition, when the partition portion 70 is interposed between the magnetron 20 and the waveguide 40, the outlet portion 21 of the magnetron 20 may be directly connected to the inlet portion 42 of the waveguide 40 to be described later. However, in some cases, a separate coaxial cable for passing the outlet 21 of the magnetron 20 and the inlet portion 42 of the waveguide 40 through the cable through hole 72 of the partition portion 70. (80) can also be connected. In this case, the position of the magnetron 20 can be freely changed, so that the design of the partition part 70 is easy.

On the other hand, it is preferable to form a plurality of thin cooling fins 90 on the outer surface of the casing 10 so as to enhance the forced air cooling effect by the blowing fan 60 as shown in FIG.

The magnetron 20 wraps the first heat pipe 110 or heat transfer rods, such as copper or aluminum, on the outer circumferential surface of the anode cylinder (not shown), which is a heat generating portion, and casings the other end of the first heat pipe 110. Closely fix to the inner wall surface of (10).

Here, the high pressure generator 30 is different from the first heat pipe 110 or the second heat pipe 120 or copper so as to easily dissipate heat generated in the high pressure generator 30 as shown in FIG. 6. Or it may be connected to the high pressure generator 30 and the casing 10 by using a simple heating rod such as aluminum.

The waveguide 40 is formed in an annular shape with a hollow portion 41 in the center thereof, as shown in FIG. 7, and forms an inlet portion 42 connected to the outlet portion 21 of the magnetron 20 on a main wall thereof. In the center of the side wall surface, a bulb-side through hole 43 through which the shaft portion 5b of the bulb 5 penetrates is formed, and the outlet 44 is annular so as to communicate with the resonator 6 around the bulb-side through hole 43. To form.

In addition, the inner and outer surfaces of the waveguide 40 have heat generated from the bulb 5 when turned on through the outlet 44 of the waveguide 40, and then into the casing 10 through each wall. It is preferable to apply the heat insulating material 45 so as to prevent backflow.

The first heat pipe 110 is formed in a cylindrical cross section or a rectangular cross-sectional shape so that the working fluid therein causes a phase change according to the temperature of the anode cylinder (unsigned), which is a heat generating portion of the magnetron 20, and both ends thereof are formed. It is preferable to join to the outer circumferential surface of one anode cylinder (unsigned) and the casing 10 by welding or thermal bond.

The fan housing 50 is fixedly coupled to the casing 10 by using a separate connection member 130, 130 after being disposed at a predetermined interval on one side of the casing 10, as shown in FIG. As shown in FIG. 8, the casing 10 may be wrapped to accommodate and support the casing 10.

In any case, the air inlet 51 of the fan housing 50 is preferably formed on the opposite side of the casing 10 and the air outlet 52 is formed to face the outer surface of the casing 10. In particular, when the fan housing 50 surrounds and accommodates the casing 10 as shown in FIG. 8, it is preferable that the cold air is formed at both ends so that the air inlet 51 and the air outlet 52 are farthest from each other. It is preferable to exhaust after sufficient contact with).

In addition, inside the fan housing 50, the blowing fan 60 and the fan motor M2 for rotating the blowing fan 60 are mounted, but the blowing fan 60 has a fan housing as shown in FIG. An axial flow fan may be used to facilitate the flow path shape of 50), or a cross flow fan with noise reduction effect may be used even if the flow path shape is relatively complicated.

In the drawings, the same reference numerals are given to the same parts as in the prior art.

In the figure, reference numeral 5a denotes a light emitting portion, and 9 denotes a dielectric mirror.

The electrodeless illumination system of the present invention has the following effects.

That is, microwaves generated by the magnetron 20 radiate into the resonator 6 through the waveguide 40, and discharge the encapsulated material in the light bulb 5 by the microwaves to generate light having a unique emission spectrum. This light illuminates the space while reflecting forward by the reflector 7 and the dielectric mirror 9.

At this time, high heat is generated in the magnetron 20 as described above, but the heat is transferred to the casing 10 through the first heat pipe 110 or a heat conducting rod made of aluminum or copper, and the heat is casing 10. The heating system maintains a constant temperature while being radiated by forcibly contacting the cold air by the blowing fan 60 and the fan housing 50 provided outside the.

In addition, in the high pressure generator 30, high heat is also generated in the process of boosting and supplying commercial AC power to the magnetron 20 at high pressure, but this heat is also generated by the second heat pipe 120 or the heat conduction rod, which is another heat transfer member. The thermal conductivity is transferred to the casing 10 having a high cross sectional area and is radiated by the blower fan 60.

In addition, the bulb 5 generates infrared rays having heat in addition to visible light, and part of the bulb 5 is radiated by convection while being rotated by the bulb motor M1, but part of the bulb 5 is reversed inflow into the waveguide 40 so as to provide a casing ( There is a risk of heat radiation into the interior 10, the heat insulating material 45 is applied to the inner and outer wall surface of the waveguide 40 can effectively prevent the heat introduced from the light bulb (5) to be transferred to the casing (10).

In addition, as the inside of the casing 10 is divided into the magnetron accommodating space 12 and the other component accommodating space 13 by the partition part 70, the high heat generated in the magnetron 20 is transferred to other parts. It can prevent more effectively.

In addition, by using the material of the partition portion 70 as a heat insulating material, the relative high heat generated in the magnetron 20 is prevented from being transmitted to the other component accommodating space 13 to overheat the high-pressure generator 30 or the electric bulb motor M1. Can be prevented.

In addition, in the case of forming a plurality of cooling fins 90 on the outer surface of the casing 10, the heat dissipation area becomes wider, and the magnetron 20 or the high pressure generator 30 is in wide contact with the cold air blown from the blowing fan 60. Heat transferred from the heat dissipation can be effectively dissipated.

In addition, when the fan housing 50 completely encloses the casing 10, cold air blown from the blowing fan 60 may be uniformly contacted with the entire casing 10 to further increase the heat dissipation effect.

The cooling apparatus of the electrodeless lighting system according to the present invention is provided by separating the magnetron by dividing the inside of the casing, connecting the magnetron and the high pressure generator to the casing by using a heat transfer member, and mounting a blower fan outside the casing. Even if the casing is formed in a sealed type, it is possible to dissipate heat transferred from the magnetron or the high-pressure generator to the casing. When the lighting system is installed outdoors, it prevents rain or other foreign matter from penetrating into the casing. Failure or damage can be prevented beforehand.

Claims (21)

A casing provided with a predetermined receiving space and formed to be sealed, and a light bulb installed outside the casing with an encapsulating material to generate light while plasmaizing by microwaves, and a microwave shielded by being installed outside the casing to accommodate the light bulb. While the light emitted from the bulb passes through a resonator, an anode part and a cathode part and a magnet, a magnetron mounted in the accommodating space of the casing to generate microwaves when a current is applied to the cathode part, and an outlet part of the magnetron; In an electrodeless illumination system comprising a waveguide in communication with a resonator to guide microwaves to the resonator, Cooling device of the electrodeless lighting system, characterized in that the blower fan for sucking the outside air on one side of the casing to blow to the outer surface of the casing. The method of claim 1, Blowing fan is a cooling device of an electrodeless lighting system, characterized in that provided with a separate fan motor. The method of claim 2, A cooling device of an electrodeless lighting system, characterized in that the blowing fan and the fan motor are housed together in one fan housing. The method of claim 3, The fan housing is a cooling device for an electrodeless lighting system, characterized in that arranged at a predetermined distance from the casing. The method of claim 4, wherein The fan housing is a cooling device of the electrodeless lighting system, characterized in that fixed to the casing by using a connecting member. The method of claim 3, Cooling apparatus of the electrodeless lighting system, characterized in that the fan housing is formed so as to surround the casing. The method of claim 1, The casing is a cooling device for an electrodeless illumination system, characterized in that the partition portion for dividing the accommodating space so as to accommodate the magnetron in the accommodating space. The method of claim 7, wherein The partition unit is a cooling device for an electrodeless illumination system, characterized in that a portion of the waveguide contacting the magnetron is formed on one side of the middle portion of the waveguide so as to be isolated and accommodated with the magnetron. The method of claim 7, wherein The partition unit is a cooling device for an electrodeless illumination system, characterized in that it is formed between the magnetron and the waveguide in contact with it. The method according to claim 8 or 9, Cooling device of an electrodeless illumination system, characterized in that the partition portion is integrally molded to the waveguide. The method according to claim 8 or 9, The partition part is integrally molded with a casing, The cooling apparatus of the electrodeless illumination system characterized by the above-mentioned. The method according to claim 8 or 9, A partition unit is a cooling device for an electrodeless illumination system, characterized in that the fabrication separately from the waveguide or casing and post-assembled. The method according to claim 8 or 9, The partition part is a cooling device of an electrodeless lighting system, characterized in that the heat insulating material. The method according to claim 1 or 7, Cooling device of an electrodeless lighting system, characterized in that the magnetron and the casing is connected by a heat transfer member. The method according to claim 1 or 7, Cooling device of the electrodeless lighting system, characterized in that the magnetron and the casing is connected to the heat transfer member, and the contact portion of the magnetron and the heat transfer member is joined by soldering or thermal bond to increase the heat conduction efficiency. The method according to claim 1 or 7, Cooling apparatus for an electrodeless lighting system, characterized in that the heat dissipating material is applied to at least one of the inside or outside of the waveguide. The method according to claim 1 or 7, A cooling device for an electrodeless lighting system, characterized in that the outlet of the magnetron and the inlet of the waveguide are connected by a coaxial cable. A casing provided with a predetermined receiving space and formed to be sealed, and a light bulb installed outside the casing with an encapsulating material to generate light while plasmaizing by microwaves, and a microwave shielded by being installed outside the casing to accommodate the light bulb. While the light emitted from the bulb passes through the resonator, the anode portion and the cathode portion and the magnet is provided with a magnetron mounted in the accommodating space of the casing to apply a current to the cathode portion, and the outlet portion of the magnetron and In an electrodeless illumination system comprising a waveguide in communication with a resonator to guide microwaves to the resonator, The fan housing is coupled to the outside of the casing and the air outlet corresponding to the casing, and a blowing fan mounted on the inside of the fan housing to blow the outside air to the outer surface of the casing of the electrodeless lighting system, characterized in that Cooling system. The method of claim 18, The casing is a cooling device of an electrodeless lighting system, characterized in that the partition portion for dividing the accommodating space so as to accommodate the magnetron in the accommodating space. The method of claim 19, Cooling device for an electrodeless lighting system, characterized in that the high-pressure generator is built in the receiving space to remove the magnetron from the receiving space partitioned by the partition portion, and the high-pressure generator and the casing are connected by another heat transfer member. The method according to claim 1 or 18, Cooling device for an electrodeless lighting system, characterized in that the cooling fins are formed on the outer surface of the casing.