KR101400780B1 - Electrodeless lamp - Google Patents

Abstract

An electrodeless lamp comprises: a hollow rod which transmits heat; a magnetic assembly which has a magnetic substance which includes a groove arranged on the outer surface of the rod, is extended in the longitudinal direction of the rod, and a coil which is wound around the outer surface of the magnetic substance; a fluorescence generation part which has an inner wall coated by a fluorescence material, forms a discharge space filled with a discharge gas, and is surrounded by the magnetic assembly; a bulb which has a receiving part connected to the discharge space of the fluorescence generation part and is inserted into the rod; a gas generation part received in the receiving part and generates a gas and a thermal conduction part combined with the rod and transmits heat to the outside.

Description

Electrodeless lamp

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeless lamp, and more particularly to an electrodeless lamp having improved durability and heat dissipation characteristics while being easy to assemble.

Electrodeless lamps are fluorescent discharge lamps that do not have electrodes or filaments in the bulb, and have lifetime of 80,000 to 100,000 hours.

The electrodeless lamp includes a bulb containing a rare gas and a discharge tube inside the bulb, a magnetic body and a coil coated with a fluorescent material on the inner wall. When a predetermined voltage is applied to the coil, an induction magnetic field is formed between the coil and the magnetic body. The induced magnetic field discharges the rare gas in the bulb and generates visible light by induction coupled plasma.

A conventional electrodeless lamp has a sleeve of a synthetic resin material disposed on the outer side of a magnetic body and a coil on the outer side of the sleeve to couple the magnetic body and the coil, as shown in Korean Patent No. 0806361 (Feb. However, according to this structure, since the sleeve is disposed between the magnetic body and the coil, the size of the induction magnetic field is reduced by the thickness of the sleeve, and the power consumption is increased. When the power consumption is increased, the efficiency of the electrodeless lamp is lowered, so it is difficult to obtain the light of the desired luminance and the temperature rises.

Korean Patent Laid-Open Publication No. 2011-0115813 shows a structure of a conventional electrodeless lamp using a synthetic resin sleeve. In the improved electrodeless lamp, the coil is wound directly on the outer surface of the magnetic body (coil winding operation) without using a separate component such as a sleeve made of a synthetic resin material.

However, when manufacturing an electrodeless lamp having such a structure, it is not easy to uniformly wind the coil directly on the outer surface of the magnetic body. Further, since the portion of the coil, which is introduced from the outside, is disposed under the coiled portion on the outer surface of the magnetic body, the wound state of the coil is convex toward the outside, so that it is difficult to secure a slim structure. In addition, since the coil wound on the outer surface of the magnetic body is not fixed to the magnetic body, the coil wound on the magnetic body can be deformed without keeping the initial state in which the coil is wound around the magnetic body. In order to ensure good performance characteristics of the electrodeless lamp, the coil and the magnetic body should be able to generate the induction magnetic field uniformly, but a uniform induction magnetic field can not be generated when the coil is not wound uniformly on the outer surface of the magnetic body.

In addition, in the conventional electrodeless lamp described above, the gap between the magnetic assembly and the bulb may not be uniformly maintained along the circumferential surface of the magnetic assembly, so that the magnetic field acting upon discharging is not uniform, Heat may be generated and the overall efficiency may be lowered.

Also, in the above-mentioned conventional electrodeless lamp, if the adhesive used to fix the bulb ages, the bulb may fall off from the magnetic assembly and fall down.

Korean Patent No. 0806361 (Feb. 15, 2008) Korean Patent Publication No. 2011-0115813 (Oct. 24, 2011)

An object of the embodiments is to provide an electrodeless lamp in which an operation of winding a coil on an outer surface of a magnetic body is easy and a coil can be uniformly wound.

Another object of the embodiments is to provide a non-electrode lamp having improved durability and improved heat dissipation characteristics because the winding state of the coil is stably and slimly maintained.

Another object of embodiments is to provide an electrodeless lamp capable of preventing the risk of separating the bulb from the magnetic assembly and keeping the gap between the magnetic assembly and the bulb constant.

An electrode-less lamp according to an embodiment includes a hollow rod that conducts heat, a magnetic body disposed on an outer circumferential surface of the rod and having a groove extending in the longitudinal direction of the rod, and an outer circumferential surface of the magnetic body The magnetic assembly includes a magnetic assembly having a coil, a fluorescent material coated on the inner wall to form a discharge space filled with a discharge gas, a fluorescence generating unit surrounding the magnetic assembly, and a receiving part communicating with the discharge space of the fluorescence generating unit and inserted into the rod A gas generating portion accommodated in the accommodating portion and generating gas, and a heat conduction portion coupled to the rod and transmitting heat to the outside.

The rod may be a hollow cylindrical shape, and the magnetic body may have a plurality of curved portions having curved surfaces corresponding to the outer circumferential surface of the rod, and the grooves may be formed by the spaced spaces between the curved portions.

The rod may be a hollow cylindrical shape, and the magnetic body may be a hollow cylindrical shape surrounding the whole outer circumferential surface of the rod, and the groove may be formed by cutting at least a part of the magnetic body.

The electrodeless lamp may further include a coil supporting portion inserted in the groove and supporting a coil wound on the outer circumferential surface of the magnetic body.

The coil supporting portion includes a first annular portion that protrudes outward from the magnetic body at one side of the winding portion wound on the outer peripheral surface of the magnetic body a plurality of times on the outer peripheral surface of the magnetic body to guide the coil to the groove, And a second annular portion for guiding to the groove.

The electrodeless lamp may further include a latching portion coupled to the heat conduction portion and guided by the first and second annular portions and supporting the coil drawn along the groove.

The electrodeless lamp according to another embodiment includes a hollow rod for conducting heat, a magnetic body disposed on the outer circumferential surface of the rod and having a groove extending in the longitudinal direction of the rod, and an outer circumferential surface of the magnetic body The magnetic assembly includes a magnetic assembly having a coil, a fluorescent material coated on the inner wall to form a discharge space filled with a discharge gas, a fluorescence generating unit surrounding the magnetic assembly, and a receiving part communicating with the discharge space of the fluorescence generating unit and inserted into the rod A heat generating unit that is coupled to the upper end of the rod and the magnetic body to generate a gap between the magnetic body and the bulb, And a clip portion for holding the clip portion.

According to another aspect of the present invention, there is provided an electrodeless lamp including: a hollow rod that conducts heat; a magnetic body disposed on an outer peripheral surface of the rod and having a groove extending in the longitudinal direction of the rod; A magnetic induction coil having a coil wound around the magnetic assembly; a magnetic induction coil having an inner wall coated with a fluorescent material and forming a discharge space filled with a discharge gas, And a socket portion coupled to the heat conductive portion and supporting the end portion of the coil. The heat conductive portion may include a bulb having a bulb portion, a gas generating portion accommodated in the accommodating portion and generating gas, a heat conductive portion coupled to the rod,

The thermally conductive portion may include a cylindrical portion into which the lower end of the rod is inserted and a receiving portion extending outward from the lower end of the cylindrical portion and having wiring holes. The socket portion may be coupled to the cylindrical portion. And an external cable connected to the end of the coil.

Since the coil is wound directly on the outer circumferential surface of the magnetic body, the gap between the coil and the magnetic body is reduced and the induction magnetic field is easily generated, so that the power consumption is lowered and the efficiency is improved.

Further, since the coil is wound around the outer circumferential surface of the magnetic body, the coil is drawn out to the outside through the groove of the magnetic body and is firmly supported, The durability and stability of the product are improved.

Further, since the coil passing through the lower portion of the winding portion wound around the magnetic body is disposed in the groove of the magnetic body, the winding portion wound around the magnetic body is not protruded outward so that the overall structure of the magnetic assembly can be slim.

Also, since a clip portion for keeping the interval between the magnetic assembly and the bulb constant can be disposed, the magnetic field can be uniformly generated, thereby improving the luminous efficiency and the heat transfer efficiency of the electrodeless lamp. Also, since the clip imparts an elastic force between the magnetic assembly and the bulb, the risk of separating the bulb from the magnetic assembly due to the action of gravity can be prevented. Also, when assembling the magnetic assembly and the bulb, the clip portion assists in precisely aligning the centers of the magnetic assembly and the bulb, thereby improving assembling performance.

Also, since the heat conduction part and the socket part are independently manufactured and combined using a fastening means such as a screw, the assemblability of the electrodeless lamp is improved.

1 is an exploded perspective view schematically showing a coupling relationship of some components of an electrodeless lamp according to an exemplary embodiment.
FIG. 2 is a perspective view schematically showing a state in which some components of the electrodeless lamp of FIG. 1 are assembled.
FIG. 3 is a perspective view schematically illustrating a state in which a magnetic assembly and a bulb of the electrodeless lamp of FIG. 1 are assembled.
4 is a cross-sectional view of the electrodeless lamp of FIG. 1 assembled.
5 is an exploded perspective view schematically showing a coupling relationship of some components of the electrodeless lamp according to another embodiment.

Hereinafter, the structure and operation of the electrodeless lamp according to the embodiments will be described in detail with reference to the embodiments of the accompanying drawings. The expression " and / or " used in the description refers to one of the elements or a combination of elements.

FIG. 1 is an exploded perspective view schematically showing a coupling relationship of some components of the electrodeless lamp according to one embodiment. FIG. 2 is a perspective view schematically showing a state in which some components of the electrodeless lamp of FIG. 1 are assembled, FIG. 3 is a perspective view schematically showing a state in which a magnetic assembly and a bulb of the electroless lamp of FIG. 1 are assembled, and FIG. 4 is a sectional view of the electroluminescent lamp of FIG.

The electroluminescent lamp according to the embodiment shown in Figs. 1 to 4 comprises a hollow cylindrical rod 10 for conducting heat, a magnetic assembly 20 disposed on the outer circumferential surface 10f of the rod 10, A bulb 30 surrounded by the bulb 30 and having a discharge space 35 and a gas generating part 40 accommodated in the bulb 30 and generating a gas; And a heat conduction unit 50 for transferring the heat.

The rod 10 may be made of a thermally conductive metallic material such as aluminum, brass or copper. The rod 10 has a function of transmitting and discharging heat generated from the electrodeless lamp to the outside and supporting the magnetic assembly 20. In the illustrated embodiment, the rod 10 is made of a hollow cylindrical shape, but the embodiment is not limited by the shape of the rod 10, and may be, for example, a rectangular or triangular hollow It can be manufactured to have a cylindrical shape.

The lower end of the rod 10 is coupled with the heat conduction unit 50 and transmits heat from the rod 10 to the outside to discharge the heat. The heat conduction portion 50 can also be made of a heat conductive metal material such as aluminum, brass or copper. The heat conducting portion 50 also functions to support the end portion 22g of the coil 22 of the magnetic assembly 20. [

The thermally conductive portion 50 has a cylindrical portion 51 into which the lower end of the rod 10 is inserted and a receiving portion 52 extending outward from the lower end of the cylindrical portion 51. The pedestal portion 52 expands outside the diameter of the cylindrical portion 51 to increase the area where heat is emitted.

The receptacle portion (52) is coupled with the socket portion (80). The socket portion 80 is formed in a cylindrical shape so as to surround the cylindrical portion 51 and has a case portion 82 and radiating fins 81 provided on the outer peripheral surface of the case portion 82 to radiate heat to the outside . The socket portion 80 functions to dissipate heat and to surround the lower end of the bulb 30 and the cylindrical portion 51 of the heat conduction portion 50 and the engagement portion 70.

Conventionally, since the heat conduction unit 50 and the socket unit 80 are not separately manufactured but are integrally manufactured, maintenance and repair of the electrodeless lamp is difficult. However, in the electrodeless lamp according to the above-described embodiment, since the thermally conductive portion 50 and the socket portion 80 are independently manufactured and combined using the fastening means such as the screw 59, the assemblability of the electrodeless lamp is improved do.

The receiving portion 52 of the heat conductive portion 50 has the protrusion 54 inserted into the fitting hole 83b formed in the bracket 83 of the socket portion 80. [ The screw 59 having passed through the through hole 55 of the receiving portion 52 is inserted into the screw hole 83a of the bracket 83 of the socket portion 80 after the heat conductive portion 50 and the socket portion 80 are coupled Whereby the heat conductive portion 50 and the socket portion 80 are fixed. A lid 58 made of a rubber material for covering the end hole of the cylindrical portion 51 is provided on the bottom surface of the receiving portion 52.

The receiving portion 52 of the heat conductive portion 50 is provided with a wiring hole 53 through which the external cable 90 passes. The wiring supporting tube 73 of the latching portion 70 is inserted into the wiring hole 53 of the receiving portion 52 when the latching portion 70 is coupled to the heat conductive portion 50, And can be introduced to the outside of the cylindrical portion 51 of the heat conduction portion 50 through the support tube 73.

The temperature of the magnetic assembly 20 can be maintained within the effective temperature range below the Curie point temperature by the heat dissipation action of the rod 10, the heat conduction unit 50 and the socket unit 80 as described above.

A magnetic assembly 20 is coupled to the upper end of the rod 10. The magnetic assembly 20 includes a magnetic body 21 disposed on the outer circumferential surface 10f of the rod 10 and having a groove 27 extending along the longitudinal direction of the rod 10 and a coil 21 wound around the outer peripheral surface of the magnetic body 22).

The magnetic body 21 may be a permanent magnet, and may be made of a nickel-zinc (Ni-Zn) ferrite material. The magnetic body 21 has a plurality of curved portions 21a, 21b, 21c, and 21d having a curved surface 21f corresponding to the outer peripheral surface 10f of the rod 10.

The curved surface 21f of the curved portions 21a, 21b, 21c and 21d has a corresponding semicircular cross section of the outer peripheral surface 10f of the rod 10, but the embodiments are not limited by such a structure. For example, when the rod 10 is formed into a rectangular shape, the inner surfaces of the curved portions 21a, 21b, 21c, and 21d contacting the rod 10 may be deformed into a square corresponding to the shape of the rod 10.

The grooves 27 of the magnetic body 21 are formed by the spaced spaces between the curved portions 21a, 21b, 21c and 21d. The groove 27 functions as a passage through which the coil 22 wound on the magnetic body 21 passes. The coil 22 passes through the groove 27 of the magnetic body 21 and is wound on the outer circumferential surface of the magnetic body 21 and an induced magnetic field is generated as a voltage is applied to the coil 22 from the outside.

The coil 22 is wound on the magnetic body 21 so as to maintain a constant gap on the outer circumferential surface of the magnetic body 21. As the number of turns of the coil 22 per unit area increases, the intensity of the induced magnetic field increases, so that the coil 22 is wound as tightly as possible. The coil 22 may have a structure in which a thermally conductive coating is applied to the outside of the electrically conductive wire.

No separate structure is disposed between the coil 22 and the magnetic body 21 and the coil 22 is wound directly on the outer peripheral surface of the magnetic body 21. [ Therefore, the intensity of the induced magnetic field generated in the electrodeless lamp of the embodiment is increased as compared with the conventional method in which the resin-made sleeve is disposed between the coil and the magnetic body. The coil 22 can be precisely wound so that the position of the magnetic body 21 coincides with the position of the coil 22 because the coil 22 is wound directly on the outer circumferential surface of the magnetic body 21, The work can be easily carried out.

The end portion 22g of the coil 22 is supported by the engagement portion 70 coupled to the cylindrical portion 51 of the heat conduction portion 50. [ The lead wire 22f of the end portion 22g of the coil 22 is electrically connected to the lead wire 91a of the wire 91 of the outer cable 90 and the heat resistant resin 57).

The end portion 22g of the coil 22 is tightly wound on each of the upper support portion 71 and the lower support portion 72 of the engagement portion 70 so that the engagement portion 70 is engaged with the end portion 22g of the coil 22, Thereby imparting tension to the coil 22 wound around the magnetic body 21. [

The coil 22 forms a winding portion 22a wound on the outer circumferential surface of the magnetic body 21 a plurality of times successively after passing through the groove 27 of the magnetic body 21. The coil 22 passing under the winding portion 22a is disposed along the surface of the magnetic body 21 because the magnetic body 21 is not provided with the groove 27 through which the coil 22 can pass. Therefore, conventionally, it has a shape protruding outward convexly due to the coil 22 passing under the winding portion 22a of the winding portion 22a.

However, in the electrodeless lamp according to the embodiment, the coil 22 introduced from the outside into the magnetic body 21 is disposed along the groove 27 of the magnetic body 21, so that the winding portion 22a is located on the bottom of the winding portion 22a The magnetic assembly 20 can be slimly formed as a whole because the coils 22 passing through the magnetic assembly 20 do not project to the outside.

The groove 27 may be provided with a winding support portion 60. The coil supporting portion 60 functions to support the coil 22 wound on the outer peripheral surface of the magnetic body 21 in a state of being inserted into the groove 27. [ The winding support portion 60 includes a first ring portion 61 projecting outwardly of the magnetic body 21 from one side of the winding portion 22a and a second ring portion 61 projecting outwardly of the magnetic body 21 from the other side of the winding portion 22a. And an annular portion (62).

The winding support portion 60 has a rod 10 and an upper ring portion 63 into which the upper end of the magnetic body 21 is inserted. The upper ring portion 63 is formed in a curved shape to have elasticity. The upper ring part 63 is inserted into the upper end of the rod 10 and the magnetic body 21 to stably maintain the state where the winding supporting part 60 is inserted into the groove 27 of the magnetic body 21, Can be firmly supported.

When the coil 22 of the magnetic body 21 is wound and the coil 22 is pulled out downward through the groove 27, the magnetic body 21 of the coil 22 is pulled by the heat-resistant tape 28 wound on the outer side of the magnetic body 21 21).

The first ring portion 61 functions to guide the coil 22 to the groove 27 by supporting the one side portion 22c of the winding portion 22a of the coil 22. The second ring portion 62 functions to guide the coil 22 to the groove 27 by supporting the other portion 22d of the winding portion 22a of the coil 22. The engaging portion 70 supports the end portion 22g of the coil 22 drawn downward along the groove 27 after the coil 22 is wound around the magnetic body 21. [

In the illustrated embodiment, the configuration in which the coil 22 is supported by the winding support portion 60 and wound around the magnetic body 21 is applied, but the embodiment is not limited to this configuration. A portion of the magnetic body 21 is directed toward the groove 27 without installing a ring for supporting the coil 22 in the magnetic body 21 or separately providing a component for supporting the coil supporting portion 60 A method of deforming the shape to protrude may be used.

The bulb 30 is provided with a fluorescence generating portion 31 for forming a discharge space 35 in which a fluorescent substance is coated on the inner wall and a discharge gas is filled therein and a discharge space 35 for communicating with the discharge space 35 of the fluorescence generating portion 31 (32) inserted into the rod (10). The inside of the fluorescence generating portion 31 is formed with an insertion wall portion 37 which surrounds the magnetic assembly 20 and is formed to be concave to accommodate. The accommodating portion 32 extends from the insertion wall portion 37 so as to protrude outward.

The fluorescent material applied to the inner wall of the bulb 30 may include a material such as halophosphate or fluorophosphate. Ultraviolet rays are generated by discharge of the rare gas filled in the bulb 30, and ultraviolet rays can emit visible light through the fluorescent material 30a.

The discharge gas filled in the bulb 30 may include a rare gas such as argon, krypton or the like, or mercury mixed with a rare gas. The accommodating portion 32 accommodates a gas generating portion 40 for generating a gas. The gas generating part 40 is made, for example, in the form of a small container and can receive mercury therein. The mercury contained in the gas generating part 40 may be in the form of an amalgam (an alloy of mercury and another metal).

Mercury can emit ultraviolet rays at discharge. When a rare gas such as argon, krypton, or the like existing in the bulb 30 is a gas mixed with mercury, ultraviolet rays emitted from mercury when the discharge is caused by the induced magnetic field pass through the fluorescent material applied on the inner wall of the bulb 30 It can emit visible light.

The bulb 30 is made to have a bulb shape as a whole by using a material for passing light such as a glass material. By inserting the end of the receiving portion 32 of the bulb 30 into the central space of the rod 10 and inserting the upper end of the magnetic assembly 20 along the inserting wall portion 37, 20). 4, the joint between the end edge of the bulb 30 and the socket portion 80 can be fixed by using an adhesive such as silicone in a state where the bulb 30 and the magnetic assembly 20 are coupled to each other have.

A clip portion 69 may be provided at the upper end of the magnetic assembly 20 so as to be engaged with the upper end of the rod 10 and the magnetic body 21. The clip portion 69 is provided with an elastic portion 69a which is curved so as to have elasticity and maintains a state protruding outward of the magnetic body 21. [ The elastic portion 69a of the clip portion 69 contacts the insertion wall portion 37 when the magnetic assembly 20 moves along the insertion wall portion 37 while the bulb 30 and the magnetic assembly 20 are assembled Thereby guiding the movement of the magnetic assembly 20 so that stable and easy assembly can be achieved. The clip portion 69 also functions to protect the insertion wall portion 37 by blocking direct contact between the insertion wall portion 37 and the magnetic body 21 of the magnetic assembly 20. [

The position of the magnetic body 21 may be slightly offset with respect to the rod 10 when the magnetic body 21 is attached to the rod 10 in which case the coupling of the magnetic assembly 20 with the bulb 30 It may not be easy. That is, depending on the position of the magnetic body 21, the centering may not be performed well during the coupling of the magnetic assembly 20 to the bulb 30, and the magnetic assembly 20 and the bulb 30 May not be constant along the circumferential surface of the magnetic assembly 20, resulting in a decrease in luminous efficiency. In other words, if the gap between the magnetic assembly 20 and the bulb 30 is not constant, the magnetic field generated by the magnetic assembly 20 and the bulb 30 during discharge can not be uniformly formed, The heat transfer effect of the heat generated during the discharge to the rod 10 may be significantly reduced.

However, by employing the clip portion 69 of the above-described configuration, the magnetic assembly 20 and the bulb 30 can be easily combined with the center of the magnetic assembly 20 and the center of the bulb 30 exactly.

Since the clip portion 69 is disposed between the bulb 30 and the magnetic assembly 20 so that the distance between the bulb 30 and the magnetic assembly 20 is maintained precisely along the entire circumferential direction of the magnetic assembly 20 So that the luminous efficiency can be increased by the generation of a uniform magnetic field and the heat conduction performance can be improved.

The clip portion 69 also provides an elastic force between the bulb 30 and the magnetic assembly 20 to prevent the bulb 30 from falling out of the magnetic assembly 20. [ When the bulb 30 is fixed only by using the adhesive agent only after the bulb 30 has weakened the performance of the adhesive after a long period of time, . If the bulb 30 is installed so as to face downward in the gravitational direction when the electrodeless lamp is installed, it is dangerous that the bulb 30 may fall down. However, since the electrodeless lamp according to the above-described embodiment exerts an elastic force such that the clip portion 69 can maintain the engagement between the bulb 30 and the magnetic assembly 20, the bulb 30 is not subjected to gravitational force It is possible to prevent accidents such as falling down.

When an electric power supplied from an external power source such as an inverter (not shown) is applied to the coil 22, an induced magnetic field is generated around the coil 22 in the electrodeless lamp. The induced magnetic field discharges the ionizable filler containing the rare gas charged inside the bulb 30 to emit ultraviolet rays. The ultraviolet light impinges on the fluorescent material applied to the inner wall of the bulb 30 so that visible light emits to the outside of the bulb 30.

In the electrodeless lamp according to the embodiment as described above, since the coil 22 is wound directly on the outer peripheral surface of the magnetic body 21, the gap between the coil 22 and the magnetic body 21 is reduced and an induced magnetic field is easily generated. That is, even if the same size of power is used, the strength of the induced magnetic field is stronger than that of the conventional structure, so that the power consumption is lowered and the efficiency is improved.

The coil 22 is wound around the outer circumferential surface of the magnetic body 21 and is then pulled out to the outside through the groove 27 of the magnetic body 21 to be firmly supported so that the operation of winding the coil 22 can be easily performed, It is possible to accurately wind the coil 22 at a position corresponding to the magnetic body 21 while keeping the density of the coil 22 wound on the coil 21, thereby improving the reliability and stability of the product.

5 is an exploded perspective view schematically showing a coupling relationship of some components of the electrodeless lamp according to another embodiment.

The electrodeless lamp according to the embodiment shown in Fig. 5 is a modification of the shape of the magnetic body, the winding support portion and the clip portion to be coupled to the rod in the electrodeless lamp according to the embodiment shown in Figs. The magnetic body 121 coupled to the hollow cylindrical rod 110 is formed into a hollow cylindrical shape that surrounds the entire outer peripheral surface of the rod 110.

The magnetic body 121 has a groove 127 formed by cutting a part of the magnetic body 121. The coil supporting portion 160 is coupled to the groove 127 of the magnetic body 121. The winding support portion 160 includes a top ring portion 163 into which the upper end of the magnetic body 121 and the rod 110 are inserted and a first ring portion 161 protruding outward from the magnetic body 121 in the groove 127 And a second annular portion 162.

The shape of the winding support portion 160 shown in Fig. 5 is also modified from the shape of the winding support portion of the electrodeless lamp according to the embodiment shown in Figs. The groove 127 formed in the magnetic body 121 is formed so as to extend only from the lower end of the magnetic body 121 to the middle portion of the magnetic body 121 so that the upper end ring portion 163 extends further downward.

Although not shown in the drawing, when the coil is wound around the outer peripheral surface of the magnetic body 121, the first ring portion 161 and the second ring portion 162 of the coil supporting portion 160 stably support the coil. Further, the coil wound around the magnetic body 121 can be pulled out downward through the groove 127 to be firmly supported while maintaining a constant tension.

A clip portion 169 may be provided on the upper end of the rod 110 and the magnetic body 121. The clip portion 169 is provided with an elastic portion 169a which is curved to have elasticity and protrudes outwardly of the magnetic body 121 and an inner support portion 169b which is in contact with the inner wall of the rod 110. [

The clip portion 169 may be made of metal or plastic. In addition, although two clip portions 169 are disposed in FIG. 5, they may be modified into various numbers. The clip portion 169 may be formed in a ring shape or a lid-like shape extending along the outer circumferential surface of the magnetic body 121, instead of the shape shown in Fig.

The construction and effect of the above-described embodiments are merely illustrative, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Accordingly, the true scope of protection of the invention should be determined by the appended claims.

10, 110: load 58: cover
10f: outer circumferential surface 57: heat-resisting resin
20: Magnetic assembly 59: Screw
21f: Curved surface 60, 160: Winding support
21, 121: magnetic substance 61, 161: first ring part
22a: winding section 62, 162: second ring section
22g: end portions 63, 163: upper ring portion
22f: lead wire 69, 169: clip portion
22c: one side portion 69a, 169a:
22: coil 70:
22d: the other side portion 71:
27, 127: groove 72: lower support
30: Bulb 73: Wiring support tube
31: Fluorescence generating part 80: Socket part
32: receptacle 81: radiating fins
35: discharge space 82: case portion
37: insertion wall portion 83a: screw hole
40: gas generating part 83: bracket
50: heat conduction part 83b: engaging hole
51: Cylindrical parts 21a, 21b, 21c, 21d:
52: Support 90: External cable
53: wiring hole 91a: lead wire
54: protrusion 91: wire
55: through hole 28: heat-resistant tape

Claims (9)

A hollow rod that conducts heat;
A magnetic body disposed on an outer circumferential surface of the rod and having a groove extending along a longitudinal direction of the rod; and a coil passing through the groove of the magnetic body and wound on an outer circumferential surface of the magnetic body;
A bulb which communicates with the discharge space of the fluorescence generating unit and is inserted into the rod, the bulb having a fluorescent substance coated on the inner wall and forming a discharge space filled with a discharge gas and surrounding the magnetic assembly;
A gas generating part accommodated in the accommodating part and generating gas;
A first ring portion that protrudes outward from the magnetic body at one side of the winding portion wound on the outer circumferential surface of the magnetic body a plurality of times on the outer circumferential surface of the magnetic body so as to guide the coil to the groove; A coil supporting portion which is inserted into the groove and supports the coil wound on the outer circumferential surface of the magnetic body, the coil supporting portion having a second annular portion projecting to the groove and guiding the coil to the groove; And
And a heat conduction part coupled to the rod to transmit heat to the outside. The method according to claim 1,
The rod is hollow cylindrical,
Wherein the magnetic body has a plurality of curved portions having a curved surface corresponding to the outer circumferential surface of the rod, and the grooves are formed by the spaced spaces between the curved portions. The method according to claim 1,
The rod is hollow cylindrical,
Wherein the magnetic body is a hollow cylindrical shape surrounding the entire outer peripheral surface of the rod, and the groove is formed by cutting at least a part of the magnetic body. delete delete The method according to claim 1,
Further comprising a latching portion that is guided by the first ring portion and the second ring portion and is coupled to the heat conductive portion so as to hold the coil drawn along the groove. A hollow rod that conducts heat;
A magnetic body disposed on an outer circumferential surface of the rod and having a groove extending along a longitudinal direction of the rod; and a coil passing through the groove of the magnetic body and wound on an outer circumferential surface of the magnetic body;
A bulb which communicates with the discharge space of the fluorescence generating unit and is inserted into the rod, the bulb having a fluorescent substance coated on the inner wall and forming a discharge space filled with a discharge gas and surrounding the magnetic assembly;
A gas generating part accommodated in the accommodating part and generating gas;
A heat conduction unit coupled to the rod to transfer heat to the outside;
A clip coupled to the rod and an upper end of the magnetic body to maintain a gap between the magnetic body and the bulb; And
A first ring portion that protrudes outward from the magnetic body at one side of the winding portion wound on the outer circumferential surface of the magnetic body a plurality of times on the outer circumferential surface of the magnetic body so as to guide the coil to the groove; And a winding support portion having a second annular portion projecting toward the groove to guide the coil to the groove and inserted in the groove and supporting the coil wound on the outer circumferential surface of the magnetic body. A hollow rod that conducts heat;
A magnetic body disposed on an outer circumferential surface of the rod and having a groove extending along a longitudinal direction of the rod; and a coil passing through the groove of the magnetic body and wound on an outer circumferential surface of the magnetic body;
A bulb which communicates with the discharge space of the fluorescence generating unit and is inserted into the rod, the bulb having a fluorescent substance coated on the inner wall and forming a discharge space filled with a discharge gas and surrounding the magnetic assembly;
A gas generating part accommodated in the accommodating part and generating gas;
A heat conduction unit coupled to the rod to transfer heat to the outside;
A socket portion coupled to the heat conductive portion and supporting an end portion of the coil; And
A first ring portion that protrudes outward from the magnetic body at one side of the winding portion wound on the outer circumferential surface of the magnetic body a plurality of times on the outer circumferential surface of the magnetic body so as to guide the coil to the groove; And a winding support portion having a second annular portion projecting toward the groove to guide the coil to the groove and inserted in the groove and supporting the coil wound on the outer circumferential surface of the magnetic body. 9. The method of claim 8,
Wherein the thermally conductive portion includes a cylindrical portion into which a lower end of the rod is inserted and a receiving portion extending outward from a lower end of the cylindrical portion and having wiring holes,
Wherein the socket portion is coupled to the cylindrical portion,
And an external cable passing through the wiring hole and connected to the end portion of the coil.

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