KR100795519B1 - Induction Fluorescent Lamp - Google Patents

Abstract

The present invention relates to an electrodeless fluorescent lamp, the outer tube and the inner tube is vacuum sealed and the outer surface of the inner tube forming a hollow portion, the magnetic field forming portion is inserted into the hollow portion to receive a power supply to form a magnetic field, In the electrodeless fluorescent lamp comprising a base coupled to the lower portion of the light emitting tube, and the magnetic field forming portion on the base, the base is a socket coupling portion of a metal material having a rod coupling portion coupled to the rod inside the base; And a metal piece insulated from the socket coupling part and connected to one electrode of the magnetic field forming part, wherein the rod is formed integrally with a metal material, and the other electrode of the magnetic field forming part coupled to the upper part is connected to one side and A base coupling portion coupled to the rod coupling portion, the power being supplied from the outside through the socket coupling portion and the metal piece; Characterized in that supplied.

As described above, the electrodeless fluorescent lamp of the present invention does not have to be provided with a separate power supply device, and can be easily installed and replaced. In addition, it is possible to reliably conduct and emit heat generated inside the fluorescent lamp to maintain uniform brightness for a long time.

Description

Electrodeless Fluorescent Lamp

1 is a cross-sectional view showing the coupling of an electrodeless fluorescent lamp according to the prior art,

2 is a cross-sectional view showing a light emitting tube of an electrodeless fluorescent lamp according to the present invention;

3 is an exploded perspective view of a magnetic field forming unit, a rod, and a base of an electrodeless fluorescent lamp according to the present invention;

4 is a cross-sectional view of an electrodeless fluorescent lamp according to the present invention;

5 is a perspective view of the electrodeless fluorescent lamp coupled to the socket according to the present invention.

※ Explanation of codes for main parts of drawing

100: light emitting tube 110: outer bulb

111 fluorescent substance 130 durability

131: hollow part 150: vacuum exhaust pipe

170: amalgam hall 171: amalgam

200: magnetic field forming unit 210: core

211: Hall 230: bobbin

231: groove 233: departure prevention groove

250: wire 300: rod

310: core coupling portion 330: bobbin coupling portion

331: departure prevention protrusion 350: the center of the rod

370: base coupling portion 371: wire insertion hole

400: base 410: socket coupling portion

411: rod coupling portion 430: insulation portion

450: metal piece 500: socket

The present invention relates to an electrodeless fluorescent lamp, and more particularly, to an electrodeless fluorescent lamp that is convenient in construction and can maintain brightness for a long time.

Generally, fluorescent lamps currently used include hot cathode fluorescent lamps, cold cathode fluorescent lamps, and electrodeless fluorescent lamps.

Among them, the electrodeless fluorescent lamp seals a glass tube without a filament and an electrode inside the bulb, installs an external electrode on the outside of the glass tube, forms a magnetic field in the glass tube by the external electrode, and emits light due to gas discharge. 10,000 to 100,000 hours). Due to these features, electrodeless fluorescent lamps are often used in places such as airports, high ceilings, workplaces, tunnels, and large halls where lamp replacement is difficult and expensive.

These electrodeless fluorescent lamps have a capacitively coupled plasma (CCP) that uses a discharge generated by applying a high frequency electric field between electrodes by opposing a pair of electrodes outside the discharge tube, and filament of a conventional incandescent lamp or an electrode of a discharge lamp. Instead, there is an inductively coupled plasma (ICP) that emits light through a combination of energy transfer and gas discharge through an induction magnetic field.

1 illustrates a conventional general inductively coupled electrodeless fluorescent lamp. As shown in FIG. 1, a bulb-shaped bulb 1, a cylindrical lamp cap 2 adhered to a lower end of the bulb 1, a core 41 and a coil (receiving power to form a magnetic field) 42 is fixed and the lower portion is composed of a coupler (3) coupled with the lower portion of the lamp cap (2).

The bulb 1 is vacuum-sealed in the outer sphere 11 and the inner sphere 12 to accommodate the ionizable metal vapor atoms and the inert gas therein. In addition, the outer surface of the durable 12 forms a hollow portion 14, the fluorescent material 13 is applied to the inner surface of the outer sphere (11). The lower end of the bulb 1 is bonded to the lamp cap 2 to form the circumference of the fluorescent lamp. The lamp cap 2 is made of a non-conductor such as plastics, which can be held by a user and serves to protect the inside of the fluorescent lamp.

Coupler (3) is made of the same non-conductor as the lamp cap (2), the lower end of the round plate-shaped support portion 31 is formed in the center of the columnar support bar 32 is formed. In the conventional electrodeless fluorescent lamp, the support bar 32 of the coupler 3 is inserted into the hollow part 14 of the bulb 1, and the lower part of the lamp cap 2 and the support part 31 of the coupler 3 are provided. ) Is combined. The core 41 is inserted into and fixed to the upper portion of the support bar 32 inserted into the hollow portion 14, and the coil 42 is wound around the outer circumference of the support bar 32 into which the core 41 is inserted. do. The coil 42 is connected to the external cable 5 in the lower portion of the coupler 3 as shown in the drawing to receive power from a separate power supply 6. Therefore, in order to install the conventional electrodeless fluorescent lamp, after the power supply device 6 is separately installed near the installation site, the coupler 3 is formed on the support part 31 at the installation site as shown in FIG. It is to be installed in such a way that the bolts 34 are fixed to the coupling holes 33.

However, such a conventional electrodeless fluorescent lamp has a hassle to install each of the power supply device 6 and the electrodeless fluorescent lamp at the time of construction, and when the electrodeless fluorescent lamp is installed, a bolt ( There are a lot of difficulties because they must be tightened and combined. In particular, since electrodeless fluorescent lamps are often used in places where installation is difficult, many difficulties in repairing them are required even when replacement is required due to a failure.

On the other hand, when the region of the support bar 32 to which the core 41 and the conductive wire 42 are coupled is inserted into the hollow portion 14 of the bulb 1, the bulb 1 surrounding the hollow portion 14 when the fluorescent lamp is operated is activated. The internal plasma temperature rises and the elevated temperature affects the core 41 made of ferrite or the like. That is, the high frequency magnetic field generated in the core 41 in which the conductive wire 42 is wound by the elevated plasma temperature is not constant. As such, when the high frequency magnetic field generated by the core 41 and the conductive wire 42 is not constant, electro-magnetic compatibility decreases, thereby causing a problem in that uniformity of the lamp brightness is reduced. In order to prevent this problem, a rod-shaped thermal conductor 43 is inserted into the support bar 32 in the conventional electrodeless fluorescent lamp.

However, such a heat conductor 43 is inserted into the coupler (3) has a limit in dissipating heat has a problem that does not maintain the brightness of the lamp for a long time. If the brightness of the fluorescent lamp is not uniform, it is urgent to take countermeasures because it can cause fatigue and anxiety from the person who feels the light.

Accordingly, an object of the present invention is to provide an electrodeless fluorescent lamp that can be easily installed and replaced than a conventional electrodeless fluorescent lamp without providing a power supply device separately. . It is also an object of the present invention to provide an electrodeless fluorescent lamp that can reliably conduct and emit heat generated inside the fluorescent lamp to maintain brightness for a long time.

In order to achieve the above object, the present invention provides a light emitting tube which is sealed in the outer and inner parts and the outer surface of the inner part forms a hollow part, a magnetic field forming part inserted into the hollow part and receiving power to form a magnetic field, and An electrodeless fluorescent lamp comprising a base coupled to a lower portion of a light emitting tube, and a rod for supporting the magnetic field forming portion on the base, wherein the base includes a socket coupling portion of a metal material having a rod coupling portion coupled to the rod in an inner side thereof; And a metal piece insulated from the socket coupling part and connected to one electrode of the magnetic field forming part, wherein the rod is formed integrally with a metal material, and the other electrode of the magnetic field forming part coupled to an upper part is connected to one side and the lower part is connected to one side. It is provided with a base coupling portion coupled with the rod coupling portion, the socket coupling portion and the metal piece from the outside through the metal piece It characterized in that the supplied.

Here, the base coupling portion and the rod coupling portion is characterized in that the screwed.

The magnetic field forming unit may include a core coupled to an outer circumference of the rod, a bobbin coupled to an outer circumference of the core, and a conductive wire wound around the outer circumference of the bobbin.

In addition, the base coupling portion is preferably a lead insertion hole is formed so that the lead can be inserted through.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

2 and 3 show the configuration of the electrodeless fluorescent lamp according to the present invention. 2 is a cross-sectional view of the light emitting tube 100 of the electrodeless fluorescent lamp according to the present invention, Figure 3 is a rod 300, the magnetic field forming unit 200 and the base 400 of the electrodeless fluorescent lamp according to the invention An exploded perspective view of is shown.

As shown in the figure, the present invention is a bulb-shaped light emitting tube 100 that the outer sphere 110 and the endurance 130 is vacuum-sealed and the outer surface of the inner end 130 forms a hollow portion 131, The magnetic field forming unit 200 is inserted into the hollow portion 131 to receive power from the outside to form a magnetic field, and the magnetic field forming unit 200 is coupled to the upper portion and the lower portion is coupled to the inside of the base 400 ( 300 and a base 400 coupled with the rod 300 and the light emitting tube 100.

The light emitting tube 100 has a double tube shape including an outer opening 110 coated with a fluorescent material 111 on an inner surface thereof, and an inner opening 130 vacuum-sealed with the outer opening 110 and an outer surface of which forms a hollow portion 131. It is composed. The hollow part 131 may be formed to a size that can accommodate all of the magnetic field forming parts 200 coupled to the rod 300 as a space into which the rod 300 to be described below is inserted. The lower end of the light emitting tube 100 is formed with an amalgam receiving tube 170 to accommodate the vacuum exhaust pipe 150 and the amalgam 171, the inside of the light emitting tube 100, such as metal vapor atoms and argon (Ar) Inert gas is accommodated.

As shown in FIG. 3, the rod 300 is formed of a metal material and is formed in a cylindrical shape which is reduced in diameter from the bottom to the top. The rod 300 is composed of the core coupling portion 310, the bobbin coupling portion 330, the rod center portion 350 and the base coupling portion 370 in the order stepped from the top. The rod 300 serves to support the magnetic field forming unit 200 to be located in the hollow part 131 in the electrodeless fluorescent lamp.

The magnetic field forming unit 200 covers the core 210 coupled to the outer circumference of the core coupling part 310 of the rod 300, and the bobbin which covers and covers the outer circumference of the core 210 and the bobbin coupling part 330. 230 and the conducting wire 250 wound around the outer periphery of the bobbin 230.

The core 210 is made of ferrite and has a cylindrical shape. The core 210 has a hole 211 having the same diameter as the core coupling portion 310 along the shaft core. Therefore, the core 210 is inserted such that the hole 211 is fitted to the core coupling portion 310 at the top of the core coupling portion 310. The core coupling part 310 has the same height as the core 210 and is formed such that the lower end of the core 210 abuts with the upper end of the bobbin coupling part 330 when the core 210 is coupled.

The bobbin 230 is coupled in a shape covering the top and the circumference of the core 210 at the top of the core 210. Accordingly, the bobbin 230 also has a cylindrical shape, and has a groove 231 having the same size as the diameter of the core 210 along the axis. The groove 231 is closed at the top and only the bottom thereof is coupled to the top of the core 210. When the bobbin 230 is coupled to the rod 300, the core 210 and the bobbin coupling part 330 are accommodated in the groove 231 and the lower end of the bobbin 230 is in contact with the upper end of the rod center part 350. Is formed. The bobbin 230 is preferably formed of an insulator such as Teflon. Meanwhile, although an adhesive tape or the like may be used to support the coupling between the bobbin 230 and the bobbin coupling portion 330, a separation preventing groove 233 is formed in the inner lower region of the bobbin 230, and the bobbin coupling portion ( A separation prevention protrusion 331 may be formed in the lower region of the 330. The departure prevention groove 233 and the departure prevention protrusion 331 are formed to be detachable to correspond to each other. The conductive wire 250 is wound around the outer periphery of the bobbin 230.

A base coupling part 370 having a diameter the same as that of the base 400 is formed at a lower portion of the rod center part 350. The base engaging portion 370 has a female screw portion circumference thereof and is coupled to the rod engaging portion 411 of the base 400. The conductive wire insertion hole 371 is formed at the upper end of the base coupling part 370 so that the conductive wire 250 penetrates and exits to the lower portion of the base coupling part 370. The wire insertion hole 371 is formed to have a size of a diameter through which the coated wire 250 can pass.

The magnetic field forming unit 200 is coupled to the upper portion of the rod 300 to form a magnetic field when the power is supplied. At this time, when a magnetic field is formed around the metal vapor atom and the inert gas in the light emitting tube 100, the metal vapor atom and the inert gas are accelerated by the induced current, and collision occurs with each other. At this time, the collided particles are ultraviolet (UV) is emitted by the ionized and released free electrons. When the ultraviolet rays are irradiated to the fluorescent material 111 applied to the inner surface of the outer sphere 110 generates visible light. At this time, heat is generated in the light emitting tube 100 surrounding the hollow part 131 by the rise of the plasma temperature, and the heat is conducted by the rod 300 and the base 400 formed of a metal material to emit heat. have. This is because heat generated from the light emitting tube 100 is easily discharged to the outside through the rod 300 and the base 400 because the thermal conductivity and the contact area of the rod 300 and the base 400 are large.

The base 400 is formed of a metal material and the socket coupling portion 410 is coupled to the base coupling portion 370, the insulating portion 430 is coupled to the lower portion of the socket coupling portion 410 by a non-conductive, formed of a metal material and insulated It consists of a metal piece 450 coupled to the portion 430. The base 400 is almost similar to the shape of the bulb base that is currently commercialized, but the rod coupling portion 411 of the male screw shape is formed on the inner surface of the socket coupling portion 410, the base coupling of the rod 300 It is characterized in that it is coupled to the female screw formed on the portion 370.

4 shows a cross-sectional view of the coupling of the electrodeless fluorescent lamp according to the present invention.

As described above, the magnetic coupling portion 200 is installed in the core coupling portion 310 and the bobbin coupling portion 330 of the rod 300, and the base coupling portion 370 is a rod coupling of the base 400. Coupled with the portion 411. At this time, both ends of the conductive wire 250 of the magnetic field forming unit 200 are wound on the bobbin 230 is connected to the rod center portion 350 and the metal piece 450, respectively. As shown in the figure, one side of the conductive wire 250 is connected to the rod center portion 350, the other side is connected to the metal piece 450 through the conductive wire insertion hole 371 formed in the base coupling portion 370 . The conductive wire 250, the rod center portion 350, and the metal piece 450 may be connected in various ways, but may also be easily welded or soldered. When the wire 250 is connected to the rod center portion 350 and the metal piece 450 in this way, the socket coupling portion 410 coupled to the rod center portion 350 may serve as the same electrode as a metal material, and the insulation portion 430 may be used. The metal piece 450 coupled to the other side may serve as another electrode. Therefore, when the electrodeless fluorescent lamp is coupled to the socket 500 installed in the installation place as shown in FIG. 5, the socket coupling part 410 and the metal piece 450 are connected to each electrode from the power delivered into the socket 500. Power can be delivered to form a magnetic field.

As described above, when the rod 300 and the base 400 are used in the electrodeless fluorescent lamp, there is no need to provide a separate power supply device, and screwing is possible in the socket 500, so installation and replacement are very easy. .

In addition, when the rod 300 and the base 400 of the electrodeless fluorescent lamp are formed of a conductor, it is possible to conduct and emit heat generated in the light emitting tube 100 to maintain the brightness of the fluorescent lamp uniformly for a long time. have.

As described above, according to the present invention, the electrodeless fluorescent lamp does not have to be provided with a separate power supply device, and can be easily installed and replaced. In addition, it is possible to reliably conduct and emit heat generated inside the fluorescent lamp to maintain uniform brightness for a long time.

Claims (4)

The outer surface of the inner and the outer vacuum is sealed and the outer surface of the inner light emitting tube forming a hollow portion, the magnetic field forming portion inserted into the hollow portion to form a magnetic field by receiving power, the base coupled to the lower portion of the light emitting tube, In the electrodeless fluorescent lamp comprising a rod for supporting the magnetic field forming portion on the base, The base includes a socket coupling portion of a metal material having a rod coupling portion having a female screw portion coupled to the rod therein, a metal piece insulated from the socket coupling portion and connected to one electrode of the magnetic field forming portion, The rod is formed integrally with a metal material, and the other electrode of the magnetic field forming portion coupled to the upper portion is connected to one side, and has a base coupling portion having a male screw portion coupled to the female screw portion of the rod coupling portion at the bottom thereof to be coupled with the rod coupling portion. , The electrodeless fluorescent lamp characterized in that the power is supplied from the outside through the socket coupling portion and the metal piece. delete The method of claim 1, And the magnetic field forming unit comprises a core coupled to an outer circumference of the rod, a bobbin coupled to an outer circumference of the core, and a conductive wire wound around the outer circumference of the bobbin. The method of claim 3, wherein And the lead insertion hole is formed in the base coupling portion so that the lead can be inserted therethrough.

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