KR101531096B1 - Lighting device of light source exchange type - Google Patents

Abstract

The present invention relates to a lighting apparatus comprising a base unit coupled to an external power socket for supplying power, a light source unit connected to one side of the base unit in a detachable and replaceable manner, receiving power from the base unit and emitting light, And a cover part for transmitting light emitted from the light source part.

Description

Technical Field [0001] The present invention relates to a lighting device of a light source exchange type,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting apparatus, and more particularly to a lighting apparatus capable of replacing a light source.

Lighting such as incandescent lamps, fluorescent lamps, CFLs (Compact Fluorescent Lamps), LEDs, and halogen lamps is widely installed in homes, offices, factories, roads, underpasses and all other places.

Some examples of these various lights are shown in Fig.

1 is a view showing a bulb of a general incandescent lamp, CFL, LED and the like.

Referring to FIG. 1, incandescent lamps, CFLs, and LEDs are replaced when their lifetime expires.

However, when these bulbs are exchanged, there is a waste of resources. That is, there is a problem in that the lifetime of the light source is short and the light bulb (illumination) can not be used even though the lifetime of the circuit or the mechanism is not short. In addition, environmental pollution is caused when the bulb is exchanged due to environmentally harmful substances contained in the waste bulb.

As a prior art for solving this problem, Korean Patent Registration No. 10-1020124 discloses a reflection unit provided on an inner surface of a body made of a light-narrowed shape to reflect light downward; A heat sink coupled to the upper side of the body to discharge heat generated from the LED to the outside; A diffusion plate provided on a lower side of the body to emit light of the LED downward; And a cover coupled to the front side of the body to block foreign substances from penetrating into the inside of the body. The lamp is protruded to one side of the module body and supplies power to the LED, A pair of connection terminals, and an LED module protruding from the other side of the module body and emitting light by a power source supplied from the connection terminal, is detachably installed. .

However, in the case of LED lighting, since the color spectrum is narrow due to the emission of a monochromatic light having a narrow spectrum, there are limitations in realizing the color characteristic compared with natural light or conventional illumination, and the allowable current, The characteristics are changed very sensitively to the ambient temperature and the operation temperature, and the heat treatment device and the driving device for controlling the current are required to solve the problem. In addition, the LED lighting requires a heat sink to be separately produced by heat generation due to the heat generation problem. Therefore, there is a problem in that the manufacturing cost increases, and even if the heat sink is provided, the light efficiency is lowered as the time elapsed due to the heat generated in the heat sink. The life span does not last long.

On the other hand, a field emission device is a device that emits electrons from an emitter by forming a strong electric field around an emitter formed on a cathode electrode. As an emitter for emitting electrons from such a field emission device, a micro tip made of a metal such as molybdenum (Mo) has been used. Recently, carbon nanotubes (CNTs) having excellent electron emission characteristics have been mainly used. A carbon nanotube is a carbon allotrope, a carbon atom bonded to another carbon atom with a hexagonal honeycomb pattern to form a tube shape. Due to its excellent electrical and structural characteristics, it is applied in various electric and electronic fields have. Particularly, a field emission device using a carbon nanotube emitter is advantageous in that it is low in cost, has a low driving voltage, and has excellent chemical and mechanical stability.

Therefore, development of a new type of light source exchange type illumination device using such a field emission device is required.

The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a light emitting device having a structure capable of separating a light source as well as being excellent in luminous efficiency and color reproducibility, An object of the present invention is to provide a lighting apparatus.

Another object of the present invention is to provide a lighting device which is excellent in luminous efficiency and color reproducibility without containing environmentally harmful substances, and has a low manufacturing, installation and maintenance cost.

According to an aspect of the present invention, there is provided a light source interchangeable type lighting apparatus including (1) a base unit coupled to an external power socket to supply power, (2) A light source receiving power from the base unit and emitting light, and (3) a cover unit coupled to the base unit to transmit light emitted from the light source unit.

At this time, the 'base part' is formed on the outer circumferential surface of the lower part to be separated or joined with the thread inside the socket, and receives and supplies power when the socket is coupled with the socket, A third screw thread for engaging with the second screw thread of the base is formed on the lower inner circumferential surface, and the 'third screw thread' is formed on the lower inner circumferential surface of the base, And a lens unit for diffusing light.

Specifically, the light source unit includes (1) first and second transparent substrates spaced apart from each other, (2) a cathode provided on the first transparent substrate, (3) a field emission member provided on the cathode, (4) (5) a spacer provided between the first transparent substrate and the second transparent substrate, (6) a fluorescent layer provided below the second transparent substrate, (7) a spacer provided below the fluorescent layer, An anode, (8) a first electrode connected to the cathode, (9) a second electrode connected to the gate, and (10) a third electrode connected to the anode.

In addition, it is preferable that an electrode coupling portion for fitting the first electrode, the second electrode, and the third electrode of the light source portion is provided at an upper center of the base portion.

Meanwhile, the field emission member may include (1) a field emission substrate, (2) an emitter provided on the field emission substrate, and (3) a first metallic carrier layer provided under the field emission substrate .

At this time, the first carrier layer is preferably thermally adhered to the field emission substrate.

The first carrier layer may be composed of at least one metal selected from the group consisting of gold, silver, copper, tin, aluminum, nickel, zinc, platinum, molybdenum and titanium or an alloy of these metals .

In addition, the field emission device may further include a metallic second carrier layer provided below the first carrier layer, having a first concavo-convex portion having concave and convex portions formed on a lower portion thereof. In this case, the cathode may have a second concavo-convex portion formed on its upper portion and having opposite concavities and convexities corresponding to the first concavo-convex portion of the second carrier layer, and the second concavo- .

The field emission member may include (1) a field emission substrate, (2) an emitter provided on the field emission substrate, and (3) a third unevenness formed on the bottom of the field emission substrate, And a third metallic carrier layer provided thereon. In this case, the cathode has a fourth concave-convex portion formed on the upper portion and having opposite concave-convex portions corresponding to the third concave-convex portion of the third carrier layer, and the fourth concave- .

Particularly, it is preferable that the gate has a mesh, and the mesh is located on the field emission member.

The first electrode may protrude from a lower portion of the first transparent substrate and pass through the first transparent substrate and may be connected to the cathode. The second electrode may protrude from a lower portion of the first transparent substrate, And the third electrode is protruded from the upper portion of the second transparent substrate and connected to the anode through the second transparent substrate or is connected to the gate on the lower side of the first transparent substrate, And protrudes through the first transparent substrate and is connected to the anode through the first transparent substrate.

Either one of the first transparent substrate and the second transparent substrate may be a light-shielding substrate or a reflective substrate.

The light source interchangeable illumination device according to the present invention configured as described above has a structure capable of separating a light source, so that when the light source reaches the end of its life, only the light source can be replaced, and thus the illumination device can be maintained at a low cost .

In addition, the light source interchangeable type lighting apparatus according to the present invention can improve the energy efficiency by reducing the heat generation and power consumption by constituting the light source as the lamp module of the field emission member with improved electron emission characteristics, It is possible to solve the shortening problem, improve the color reproducibility, and make it possible to manufacture without a separate heat sink, so that the manufacturing cost can be reduced, and environmental pollution can be reduced because no environmentally harmful substance is included.

Further, the light source interchangeable illumination device according to the present invention maintains the adhesion between the cathode and the field emission substrate uniformly, reduces the resistance of the entire field emission member, and accordingly improves the electron emission characteristic .

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows various forms of a conventional bulb.
2 is a view showing a configuration of a light source interchangeable type illumination device according to an embodiment of the present invention.
3 is an exploded view of a light source interchangeable illumination device according to an embodiment of the present invention.
4 is a view illustrating a configuration of a light source unit according to an embodiment of the present invention.
5 is an exploded view of a light source unit according to an embodiment of the present invention.
6 to 8 are views showing the first to third embodiments of the field emission member which is one component of the light source unit of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, . In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Furthermore, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the present invention. In this specification, the singular forms include plural forms as the case may be, unless the context clearly indicates otherwise. &Quot; comprises "and / or" comprising "used in the specification do not exclude the presence or addition of one or more other elements other than the stated element. Unless defined otherwise, all terms used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. In addition, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

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

FIG. 2 is a configuration diagram of a light source interchangeable illumination device according to an embodiment of the present invention, and FIG. 3 is an exploded view of a light source interchangeable illumination device according to an embodiment of the present invention.

As shown in FIGS. 2 and 3, the light-source switchable illumination device according to the embodiment of the present invention is separated and coupled to a thread inside the socket of an external lighting device (not shown) The lighting unit includes a base unit 300, a light source unit 200, and a cover unit 100.

The base unit 300 is coupled to an external power socket to supply power. 3, a first thread 310 for separating or coupling with a thread inside the socket is formed on the lower outer circumferential surface, and the first thread and the lower thread And a second thread 320 is formed on an outer circumferential surface or an inner circumferential surface of the upper portion, which is larger in diameter than the lower portion of the base portion. The base unit 300 includes a circuit unit for controlling the power supplied to the light source unit 200. The circuit unit is composed of a high-voltage circuit for driving the light source unit 200 that generates light by field emission. Since the light source unit 200 generates light by the field emission method, the circuit unit does not consume much current and drives the light source unit 200 even with a low power.

As shown in FIG. 3, the light source unit 200 is detachably and exchangeably coupled to the upper center of the base unit 300, receives power from the base unit 300, and emits light.

The cover unit 100 is coupled to the base unit 300 to transmit light emitted from the light source unit 200. 3, a third thread 120 for engaging with the second thread 320 of the base part 300 is formed on the inner peripheral surface or the outer peripheral surface of the lower end of the cover part 100, And a lens unit 110 for protecting the light source unit 200 and transmitting and diffusing light emitted from the light source unit 200. Further, the lens unit 110 is preferably formed in a spherical shape, and may be formed in various shapes as needed.

Hereinafter, the configuration of the light source unit 200 will be described in more detail.

FIG. 4 is a configuration diagram of the light source unit 200 according to an embodiment of the present invention, and FIG. 5 is an exploded view of the light source unit 200 according to an embodiment of the present invention.

4 and 5, the light source 200 includes a first transparent substrate 210 and a second transparent substrate 210 spaced apart from each other. The first transparent substrate 210 and the second transparent substrate 210 are spaced apart from each other, A cathode 230 provided on the first transparent substrate 210, a field emission member 240 disposed on the cathode 230, a gate 250 disposed on the field emission member 240, A spacer 260 provided between the first transparent substrate 210 and the second transparent substrate 220, a fluorescent layer 270 provided below the second transparent substrate 220, And an anode 280 provided at the lower part.

In addition, the fluorescent layer 270 and the anode 280 may be arranged so that their positions are changed from each other. That is, an anode 280 may be provided under the second transparent substrate 220, and a fluorescent layer 270 may be provided under the anode 280.

The first transparent substrate 210 and the second transparent substrate 220 are transparent substrates spaced apart from each other and transmit light generated as electrons strike the fluorescent layer 270 to the outside. For example, the first transparent substrate 210 and the second transparent substrate 220 may be selected from the group consisting of a polymer substrate, a glass substrate, a quartz substrate, and a sapphire substrate.

When the first transparent substrate 210 and the second transparent substrate 220 are polymer substrates, materials such as polyethylene terephthalate (PET), polycarbonate (PC), polymethylmethacrylate (PMMA) ), Polyethylene naphthalate (PEN), polyether sulfone (PES), cyclic olefin polymer (COC), TAC (triacetylcellulose) film, polyvinyl alcohol (PVA) film, polyimide It is preferable to include at least one member selected from the group consisting of polystyrene (PS), biaxially oriented PS (BO resin containing K resin), polypropylene (PP), and triacetyl cellulose (TAC)

When the light source unit 200 emits light in one direction, either the first transparent substrate 210 or the second transparent substrate 220 may be a light-shielding substrate for blocking light or a reflective substrate for reflecting light It is preferable that the first transparent substrate 210 is replaced with a light-shielding substrate or a reflective substrate.

As shown in FIGS. 4 and 5, the field emission device 240 includes a field emission substrate 241, an emitter 242 provided on the field emission substrate 241, As shown in FIG.

The field emission substrate 241 is a conventional wafer provided with an emitter in a field emission device. That is, the field emission substrate 241 is mounted on the cathode 230 to mount the emitter 242.

The emitter 242 is configured to emit electrons supplied by the cathode 230 toward the anode 280. A plurality of emitters 242 are formed on the field emission substrate 241 in the horizontal and vertical directions Respectively, at regular intervals. The emitter 242 may be formed of carbon nanofibers, semiconductor nanowires, conductive nanorods, graphite, etc. in addition to carbon nanotubes (CNTs). The emitter 242 may be formed in various shapes such as horns and triangles. Particularly, in the embodiment of the present invention, the emitter 242 made of carbon nanotubes is used, so that a highly efficient field emission characteristic peculiar to carbon nanotubes can be obtained. As for the process for manufacturing the carbon nanotube emitter 242, the carbon nanotube emitter manufacturing method disclosed in the applicants' patent application Nos. 10-2007-0116946, 10-2008-0010226, 10-2008-0010227, Process can be used.

4 and 5, the gate 250 controls the flow of electrons emitted from the emitter 242 in accordance with an input voltage. The gate 250 may be formed as an opening, Mesh 251 as shown in FIG. At this time, it is preferable that the mesh 251 is positioned on the field emission member 240. In addition, the gate 250 may be formed in a mesh 251 structure.

The mesh 251 diffuses the electrons emitted from the field emission member 240, so that the electrons strike the fluorescent layer 270 in a wide range to emit light uniformly. The mesh 251 is preferably formed of a conductive material. Specifically, the mesh 251 may be formed of a metal such as Au, Ni, Ti, or Cr, an indium tin oxide (ITO), an indium zinc oxide (IZO), an aluminum zinc oxide (AZO), or an indium zinc tin oxide A transparent conductive oxide (TCO), a conductive polymer, a graphene, or the like.

The spacers 260 maintain the spacing between the first transparent substrate 210 and the second transparent substrate 220 and between the cathode 230 and the anode 280. The spacers 260 are spaced apart from the first transparent substrate 210, And serves as a side portion of the lamp module which seals the periphery of the lamp module 220 to form an internal space. That is, the spacers 260 are provided around the cathode 230, the field emission member 240, and the gate 250 at the upper portion of the first transparent substrate 210 and the lower portion of the second transparent substrate 220, It is preferable to form it in a cylindrical shape as shown in Fig.

The spacer 260 may be formed of a transparent material so that light emitted from the spacer 260 can be transmitted to the outside. For example, the spacers 260 may be selected from the group consisting of polymers, glass substrates, quartz, and sapphire. In addition, the spacer 260 may be formed of a light shielding material for blocking light or a reflective material for reflecting light.

The fluorescent layer 270 is a layer formed of a fluorescent material, and generates light by collision with electrons emitted from the field emission member 240.

The fluorescent layer 270 may be formed of a fluorescent material well known in the art. The fluorescent material is a material that converts various excitation energies of electrons and emits them as visible light. The fluorescent material may be prepared by synthesizing a suitable activator ion and a maternal material in order to obtain a desired emission wavelength, but the present invention is not limited thereto. The excitation energy transmitted through the matrix of the fluorescent material is converted to visible light from the activator ion and emits light. At this time, the emission wavelength is determined by a combination of a given host and a dopant activated in the host, and each fluorescent material has a specific emission wavelength. For example, the fluorescent layer 700 may include a red fluorescent layer, a green fluorescent layer, and a blue fluorescent layer by applying red, green, and blue fluorescent materials in various shapes, respectively, and by combining them, have.

4 and 5, the light source unit 200 according to the exemplary embodiment of the present invention includes a first electrode 291, a second electrode 292, And an electrode unit 290 composed of three electrodes 293. That is, the first electrode 291 is connected to the cathode 230, the second electrode 292 is connected to the gate 250, and the third electrode 293 is connected to the anode 280 . Accordingly, power is input to the cathode 230, the gate 250, and the anode 280 through the first electrode 291, the second electrode 292, and the third electrode 293, Electrons are finally emitted through the field emission member 240 and the light source unit 200 emits light.

4, the first electrode 291 protrudes from the lower center of the first transparent substrate 210 and penetrates the first transparent substrate 210 to form the cathode 230 ). 4, the second electrode 292 protrudes from one side of the lower portion of the first transparent substrate 210 and is connected to the gate 250 through the first transparent substrate 210, . 4, the third electrode 293 protrudes from one side of the upper portion of the second transparent substrate 220 and penetrates the second transparent substrate 220 to form the anode 280, .

The third electrode 293 may protrude from one side of the first transparent substrate 210 and may be connected to the anode 280 through the first transparent substrate 210.

The first electrode 291, the second electrode 292, and the third electrode 293 are preferably formed of a conductive material so as to have a rod shape. That is, the first electrode 291, the second electrode 292 and the third electrode 293 may be formed of a metal such as Au, Ni, Ti, Cr, indium tin oxide (ITO), indium zinc oxide (IZO) a transparent conductive oxide (TCO) such as aluminum zinc oxide and indium zinc tin oxide (IZTO), a conductive polymer, and a graphene.

The operation of the lighting apparatus according to the embodiment of the present invention having such a configuration will now be described.

When power is applied through the base unit 300, power is supplied to the cathode 230, the gate 250, and the anode 280 through the electrode unit 290 of the light source unit 200. As a result, a large number of electrons are emitted from the emitter 421 of the field emission member 240 to bombard the phosphors 270 to emit light. The emitted light is emitted to the outside through the lens unit 110.

On the other hand, when the light source unit 200 has reached the end of its life due to a long period of use, the user holds the base unit 300 with one hand while holding the lens unit 110 in the counterclockwise direction ) as is when the second thread 320 and the third thread (removable 120) portion as shown in Figure 3 rotation.

Then, after the light source unit 200 having a shortened lifetime is separated from the light source unit 330 of the base unit 300, the new light source unit 200 is coupled to the light source unit 330 of the base unit 300 Assemble in reverse order.

The embodiments of the present invention can be modified into various forms, and the present invention can be applied to various types of illumination such as bar-shaped and circular, and the number of light sources can also be plural.

Since the embodiment of the present invention is formed in a shape similar to that of a conventional lighting apparatus, it can be installed without changing the installation structure of the existing structure or the building, or by slightly changing it.

In addition, since only the light source can be replaced, it is possible to maintain the lighting apparatus for a long time at a low cost, and the environmental pollution can also be reduced.

Hereinafter, a configuration of the field emission substrate 240 and the emitter 242 added to the field emission substrate 240 to improve the electron emission characteristics of the field emission assembly 240 will be described.

The electron emission characteristic of the emitter 242 formed on the field emission substrate 241 is greatly affected by the contact resistance between the cathode 230 and the field emission substrate 241. [ If the contact between the cathode 230 and the field emission substrate 241 is not uniform, the electron emission characteristic is greatly lowered due to an increase in contact resistance. Particularly, when the cathode 230 and the field emission substrate 241 are bonded together using an adhesive agent, there is a risk of deterioration of adhesive properties due to outgassing and heat during the vacuum bonding process, shortening due to adhesive diffusion, arcing may occur.

That is, it is necessary to improve the characteristics of electron emission by simultaneously and stably bonding the cathode 230 and the field emission substrate 241 while reducing the adhesive resistance.

6, the field emission member 240 may further include a first metallic carrier layer 243 provided under the field emission substrate 241, .

It is preferable that the first carrier layer 243 is bonded to the field emission substrate 241 through a heat bonding process so that the first carrier layer 243 is uniformly and stably bonded as a metal layer and the adhesion resistance can be reduced. Specifically, the first carrier layer 243 may be formed of any one selected from the group consisting of gold, silver, copper, tin, aluminum, nickel, zinc, platinum, molybdenum, titanium, .

7, in addition to the first carrier layer 243, the field emission member 240 may have a first concavo-convex pattern, And a second carrier layer 244 formed on the lower portion of the first carrier layer 243.

According to the second embodiment, the cathode 230 includes a second concave-convex portion 231 formed on an upper portion thereof and having opposite concave-convex portions corresponding to the first concave-convex portion 244a of the second carrier layer 244 The second concavo-convex portion 231 is concavo-convexly coupled to the first concavo-convex portion 244a of the second carrier layer 244. [

The second carrier layer 244 may be bonded to the first carrier layer 243 through a heat bonding process but may be bonded to the first carrier layer 243 using an intermediate material 245 desirable. Specifically, the second carrier layer 243 may be formed of any one selected from the group consisting of gold, silver, copper, tin, aluminum, nickel, zinc, platinum, molybdenum, titanium, And most preferably composed of aluminum, Sus, and Covar.

The intermediate member 245 is a metal adhesive of a conductive material for laminating the first carrier layer 243 and the second carrier layer 244, and known adhesives, elastomers and resins may be used. For example, the intermediate member 245 may be, but is not limited to, a cyanoacrylate adhesive, an epoxy adhesive, an acrylic adhesive, a polyurethane adhesive, a nylon resin, and a thermosetting resin.

Particularly, it is preferable that the concavo-convex coupling is a form in which the second carrier layer 244 and the cathode 230 can be separated and recombined. That is, the concavities and convexities formed on the second carrier layer 244 are formed in a thread or pin shape. Accordingly, the lamp module according to the present invention can be replaced with a new field emission member 400 when the life of the emitter 242 is shortened, which is cost-effective. When the second carrier layer 244 is coupled to the cathode 230, it is preferable to use a heat bonding method, a bolt-nut coupling method, or a pin fixing method.

In addition, as a third embodiment for improving the characteristics of electron emission, the field emission member 240 includes a third concavo-convex portion 246a having a concavo-convex portion formed at the lower portion thereof as shown in FIG. 8, And a metallic third carrier layer 246 provided under the field emission substrate 241.

According to the third embodiment, the cathode 230 includes a fourth concavo-convex portion 232 having an opposite concavo-convex corresponding to the third concavo-convex portion 246a of the third carrier layer 246, And the fourth concavo-convex portion 232 is concavo-convex coupled to the third concavo-convex portion 246a of the third carrier layer 246. [

It is preferable that the third carrier layer 246 is bonded to the field emission substrate 241 through a heat bonding process so that the third carrier layer 246 is uniformly and stably bonded as a metal layer and the adhesion resistance can be reduced. Specifically, the third carrier layer 246 may be formed of any one selected from the group consisting of gold, silver, copper, tin, aluminum, nickel, zinc, platinum, molybdenum, titanium, And most preferably composed of aluminum, Sus, and Covar.

Particularly, it is preferable that the concave-convex coupling is a form that can be separated and recombined between the third carrier layer 246 and the cathode 230. That is, the concavities and convexities formed in the third carrier layer 246 are formed in the form of a thread or a pin. Accordingly, the lamp module according to the present invention can be replaced with a new field emission member 240 when the life of the emitter 242 is shortened, which is cost-effective. When the third carrier layer 246 is coupled to the cathode 230, it is preferable to use a heat bonding method, a bolt-nut coupling method, or a pin fixing method.

The first carrier layer 243, the second carrier layer 244 and the third carrier layer 246 described above maintain the adhesion between the cathode 230 and the field emission substrate 241 uniformly, The resistance of the entire emission member 240 is reduced, so that the light source unit 200 having the emission member 240 improves the electron emission characteristics and improves the luminous efficiency and color reproducibility.

The first concavo-convex portion 244a and the second concavo-convex portion 231, and the third concavo-convex portion 246a and the fourth concavo-convex portion 232, which are concavo-convexly coupled to each other, It is possible.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be appreciated that one embodiment is possible. Accordingly, the true scope of the present invention should be determined by the technical idea of the claims.

100: cover part 110: lens part
120: third thread 200: light source
210: first transparent substrate 220: second transparent substrate
230: cathode 231: second concave-
232: fourth concave-convex portion 240: field emission member
241: field emission substrate 242: emitter
243: first carrier layer 244: second carrier layer
244a: first irregular portion 245: intermediate member
246: third carrier layer 246a: third concave-convex portion
250: Gate 251: Mesh
260: Spacer 270: Fluorescent layer
280: anode 290: electrode part
291: first electrode 292: second electrode
293: third electrode 300: base portion
310: first screw thread 320: second screw thread
330:

Claims (12)

A base unit coupled to an external power socket to supply power;
A light source unit that is detachably and detachably connected to one side of the base unit and receives power from the base unit and emits light;
And a cover portion coupled to the base portion to transmit light emitted from the light source portion,
The light source unit includes:
A first transparent substrate and a second transparent substrate spaced apart from each other;
A cathode provided on the first transparent substrate;
A field emission member provided on the cathode;
A gate provided to be spaced apart from the field emission member;
A fluorescent layer provided under the second transparent substrate; And
And an anode provided below the fluorescent layer,
Wherein the field emission member comprises:
A field emission substrate;
An emitter provided on the field emission substrate; And
And a metallic first carrier layer provided below the field emission substrate. The method according to claim 1,
Wherein the field emission member comprises:
And a first concavo-convex portion formed on the lower surface of the first concavo-convex portion,
The cathode may further comprise:
And a second concavo-convex portion having an opposite concavo-convex corresponding to the first concavo-convex portion of the second carrier layer formed on the upper portion, wherein the second concavo-convex portion is concavo-convex coupled to the first concavo-convex portion of the second carrier layer. Interchangeable lighting device. The method according to claim 1,
Wherein the first carrier layer is thermally adhered to the field emission substrate. The method according to claim 1,
Wherein the first carrier layer is made of any one of a metal selected from the group consisting of gold, silver, copper, tin, aluminum, nickel, zinc, platinum, molybdenum, Interchangeable lighting device. A base unit coupled to an external power socket to supply power;
A light source unit that is detachably and detachably connected to one side of the base unit and receives power from the base unit and emits light; And
And a cover portion coupled to the base portion to transmit light emitted from the light source portion,
The light source unit includes:
A first transparent substrate and a second transparent substrate spaced apart from each other;
A cathode provided on the first transparent substrate;
A field emission member provided on the cathode;
A gate provided to be spaced apart from the field emission member;
A fluorescent layer provided under the second transparent substrate; And
And an anode provided below the fluorescent layer,
Wherein the field emission member comprises:
A field emission substrate;
An emitter provided on the field emission substrate; And
And a third metallic carrier layer provided on the lower portion of the field emission substrate,
The cathode may further comprise:
And a fourth concavo-convex portion having an opposite concavo-convex corresponding to the third concavo-convex portion of the third carrier layer formed on an upper portion thereof, wherein the fourth concavo-convex portion is concavo-convexly coupled to the third concavo-convex portion of the third carrier layer. Interchangeable lighting device. 6. The method of claim 5,
And the third carrier layer is thermally adhered to the field emission substrate. 7. The method according to any one of claims 1 to 6,
Wherein the base includes a first thread formed on a lower outer circumferential surface for separating or coupling with a thread inside the socket, a power source being supplied to the socket when the socket is engaged with the socket, a second screw thread formed on an outer circumferential surface of the upper portion,
The light source unit is coupled to an upper center of the base unit,
Wherein the cover portion is provided with a third screw thread for engaging with a second thread of the base portion, and a lens portion for diffusing light emitted from the light source portion. 7. The method according to any one of claims 1 to 6,
The light source unit includes:
A first electrode connected to the cathode;
A second electrode connected to the gate; And
And a third electrode connected to the anode. 9. The method of claim 8,
And an electrode coupling portion for fitting the first electrode, the second electrode, and the third electrode of the light source unit is provided at an upper center of the base portion. 7. The method according to any one of claims 1 to 6,
Wherein the gate has a mesh, and the mesh is located on the field emission member. 9. The method of claim 8,
Wherein the first electrode is protruded from the lower portion of the first transparent substrate and is connected to the cathode through the first transparent substrate,
The second electrode is protruded from the lower portion of the first transparent substrate and is connected to the gate through the first transparent substrate,
The third electrode protrudes from the upper portion of the second transparent substrate and is connected to the anode through the second transparent substrate or protrudes from a lower side of the first transparent substrate to penetrate the first transparent substrate Wherein the light source is connected to the anode. 7. The method according to any one of claims 1 to 6,
Wherein one of the first transparent substrate and the second transparent substrate is a light-shielding substrate or a reflective substrate.

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