WO2009061124A2 - Fluorescent lamp using led - Google Patents

Fluorescent lamp using led Download PDF

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Publication number
WO2009061124A2
WO2009061124A2 PCT/KR2008/006512 KR2008006512W WO2009061124A2 WO 2009061124 A2 WO2009061124 A2 WO 2009061124A2 KR 2008006512 W KR2008006512 W KR 2008006512W WO 2009061124 A2 WO2009061124 A2 WO 2009061124A2
Authority
WO
WIPO (PCT)
Prior art keywords
led
circuit board
fluorescent lamp
frame
floodlight
Prior art date
Application number
PCT/KR2008/006512
Other languages
French (fr)
Other versions
WO2009061124A3 (en
Inventor
Chae-Young Lee
Original Assignee
Chae-Young Lee
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chae-Young Lee filed Critical Chae-Young Lee
Publication of WO2009061124A2 publication Critical patent/WO2009061124A2/en
Publication of WO2009061124A3 publication Critical patent/WO2009061124A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/104—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening using feather joints, e.g. tongues and grooves, with or without friction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/0015—Fastening arrangements intended to retain light sources
    • F21V19/0025—Fastening arrangements intended to retain light sources the fastening means engaging the conductors of the light source, i.e. providing simultaneous fastening of the light sources and their electric connections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B35/00—Electric light sources using a combination of different types of light generation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an LED fluorescent lamp capable of being used semi-permanently by using an LED, and more particularly to an LED fluorescent lamp that may be conveniently recycled and repaired and may ensure a security of a user, decrease an eyestrain and increase a security through a heat emission function of the LED fluorescent lamp.
  • An LED fluorescent lamp has been developed for solving a problem of a conventional fluorescent lamp used in most of house and office and so on and power consumption of the LED fluorescent lamp is only 20% compared with a fluorescent lamp using a fluorescent material. Also, the LED fluorescent lamp has merits that a lifetime of the LED fluorescent lamp may be prolonged up to ten-years and the LED fluorescent lamp may reduce environmental problems because the LED fluorescent lamp does not use a heavy metal such as lead or mercury.
  • An LED using a characteristic of a light-emitting semiconductor is mainly used in a liquid crystal display device of a cellular phone, an electric signboard, a dashboard of a car and so on. In the future, the LED will be used as an indoor lamp of a car, a signboard, a backlight unit of a liquid crystal display device and a general lighting, etc.
  • the above disclosed light-emitting diode (LED) lamp includes a circuit board connecting a plurality of light-emitting diodes, a control unit and a power unit, and the circuit board is inserted in a glass tube.
  • a position of the circuit board on which the light-emitting diodes are established may be changed by external impacts, and thus a direction of light illumination may be changed.
  • physical damage due to user's maltreatment may be serious because a material protecting the circuit board is a glass as the conventional fluorescent lamp.
  • a fixing ring is used for fixing the light-emitting diode.
  • the fixing ring is manufactured with a metal material, the light- emitting diode may be detached from the fixing ring and destroyed because the metal is expanded according to a heat generated from the light-emitting diode and metal elasticity is decreased as the LED lamp is used for a long time.
  • the fixing ring is manufactured with a plastic, the fixing ring may be easily broken even by a small impact in comparison with the metal.
  • 10-2004-0081848 is related to a light-emitting diode lamp traffic light including a circuit board on which a plurality of light emitting diodes are established, a fixed direction maintenance member for light refraction, a rear case, a power supply device and a fixing member.
  • the fixed direction maintenance member, the circuit board and the rear case are sequentially fixed by a bolt, and thus the light emitting diode lamp traffic light has poor durability because such fixing is unstable due to a possibility of bolt looseness and water may penetrate into the traffic light.
  • the present invention is directed to provide a semi-permanent LED fluorescent lamp capable of decreasing an eyestrain by supplying a DC voltage, capable of increasing a security of a user by using a convex lens of a plastic material instead of a glass material and capable of being conveniently recycled and repaired since components of the LED fluorescent lamp may be assembled and disassembled with sliding attachment/detachment method.
  • the present invention is also directed to provide an LED fluorescent lamp having a frequent- cooling function by quickly emitting a heat occurred due to LED lighting.
  • An LED fluorescent lamp includes a floodlight cap formed with a plastic material and having a convex lens type; a frame combined with the floodlight cap to forma cylinder type structure with the flood cap and having a combining mean of a sling method at inside and outside of the frame; an LED circuit board established between the floodlight cap and the frame, and including a plurality of DC LEDs arranged with a predetermined interval; an insulation pad established between the LED circuit board and the frame to insulate the LED circuit board and the frame; a DC driving circuit board established between the insulation pad and the frame, surrounded by an insulation tube, and electrically connected with the LED circuit board; a cylinder type power supplying connection termination CT configured to fix both longitudinal ends of the floodlight cap and the frame and configured to supply DC voltage to the driving circuit board.
  • an LED fluorescent lamp according to the present invention is structured to minimize physical injury of a user using a floodlight cap of a plastic material in comparison with a conventional fluorescent lamp of a glass material, and may uniformly diffuse light.
  • an LED fluorescent lamp of the present invention may decrease eyestrain when the LED fluorescent lamp is implemented as a DC LED fluorescent lamp including an AC-DC converter, and may decrease cost and power consumption when the LED fluorescent lamp is implemented as an AC LED fluorescent lamp excluding an AC-DC converter.
  • an LED fluorescent lamp of the present invention has a merit that the LED fluorescent lamp may be conveniently repaired and recycled when the LED fluorescent lamp has a problem, because a floodlight cap and a frame may be attached to and detached from each other, each LED may be mounted on and removed from an LED circuit board, and also the LED circuit board may be attached to and detached from the frame.
  • the present invention cools the LED fluorescent lamp through a frame of a material easy to emitting a heat generated in the LED fluorescent lamp, and thus the present invention may further stabilize the operation of the LED fluorescent lamp.
  • FIG. 1 illustrates a perspective view of an LED fluorescent lamp according to the present invention, in which a portion of the LED fluorescent lamp is cross-sectioned.
  • FIG. 2 illustrates a vertical cross-sectional view of an LED fluorescent lamp according to the present invention.
  • FIG. 3 illustrates a vertical cross-sectional view of a combining mean of a frame in an LED fluorescent lamp according to the present invention.
  • FIG. 4 is a detailed diagram illustrating an LED circuit board in an LED fluorescent lamp according to the present invention.
  • FIG. 1 illustrates a perspective view of an LED fluorescent lamp according to the present invention, in which a portion of the LED fluorescent lamp is cross-sectioned
  • FIG. 2 illustrates a vertical cross-sectional view of an LED fluorescent lamp according to the present invention.
  • the LED fluorescent lamp according to the present invention illustrated in the FIGS. 1 and 2 includes a floodlight cap 100, a frame 200 that is combined with the flood cap 100 to form a cylinder type structure, an LED circuit board 300 including a plurality of LEDs 301 arranged with a predetermined interval, a driving circuit board 400 electrically connected to the LED circuit board 300, and a reflection board 500.
  • the floodlight cap 100 may be formed with half circle type, one-third circle type, one-fourth circle type and so on in order to form a cylinder type structure in combination to the frame 200.
  • the frame 200 may be formed with half circle type, two-third circle type, three-fourth circle type and so on depending on the type of the floodlight cap 100, thereby selectively increasing an amount of penetrated light or a solidity of the LED fluorescent lamp.
  • the floodlight cap 100 is formed with a floodlight lens 101 of a convex lens type to uniformly diffuse light, and a fluorescent material 102 for converting a blue light or an ultraviolet light from the LEDs into a white light is coated on the surface of the floodlight lens 101.
  • a material of the floodlight lens 101 may be plastic in consideration of a security of a user.
  • the floodlight cap 100 includes protrusion portions 103 formed along both lateral ends of the floodlight cap 100 for combining the floodlight cap 100 with the frame 200. Such combining means will be described in detail with the description of the frame 200.
  • the frame 200 may be formed with a material such as a light aluminum alloy having a high thermal conductivity so as to promptly emit out a heat generated in the LED fluorescent lamp according to the present invention.
  • FIG. 3 illustrates a vertical cross-sectional view of a combining mean of a frame in an LED fluorescent lamp according to the present invention.
  • fixing grooves 201 which are combined with the protrusion portions 103 of the floodlight cap 100, are formed on an outer surface of the frame 200 and thus the protrusion portions 103 may be combined with or detached from the fixing grooves 201 with sliding method.
  • a partition 203 is formed between inside surfaces of the frame 200 along a longitudinal direction and ribs 204 with a predetermined interval are formed on a bottom surface of the partition 203 such that insertion grooves 202 are formed between the partition 203 and the ribs 204.
  • Left and right lateral ends of the LED circuit board 300 are combined with and detached from the insertion grooves 202 with sliding method.
  • Intervals and widths of the protrusion portions 103, the fixing grooves 201 and the insertion grooves 202 may be adjusted for convenience of checking a problem, repairing and recycling the LED fluorescent lamp when the problem occurs in the LED fluorescent lamp.
  • the frame 200 may be manufactured with injection molding method.
  • FIG. 4 is a detailed diagram illustrating an LED circuit board in an LED fluorescent lamp according to the present invention. As illustrated in FIG. 4, the LED circuit board 300 includes a plurality of
  • the LED 301 is a semiconductor device capable of generating a high intensity of illumination with a low power.
  • UV LED Ultraviolet Light Emitting Diode
  • an insulation pad 303 may be further included between the LED circuit board 300 and the frame 200 to perfectly insulate an electrical connection (short circuit) between the LED circuit board 300 and the frame 200.
  • connection terminals CT fix left and right ends of the floodlight cap 100 and the frame 200, and the connection terminals CT are connected to a driving circuit board 400 to supply power.
  • the connection terminals CT may have a structure corresponding to a conventional fluorescent lamp socket for compatibility with the conventional fluorescent lamp socket.
  • the driving circuit board 400 surrounded by an insulation tube 401 is established at inner space between the insulation pad 303 and the frame 200, and the driving circuit board 400 is connected with the LED circuit board to control the LED circuit board 300.
  • the reflection board 500 reflects light emitted from the LED 301 so that the reflected light may be in a direction toward the floodlight cap 100,
  • the reflection board 500 is established on a lower surface of the LED circuit board 300.
  • the LED fluorescent lamp according to the present invention may be a DC LED fluorescent lamp including an AC-DC converter in the connection terminal CT, using a DC LED as the LED 301, and using a DC driving circuit board as the driving circuit board 400 for decreasing eyestrain of a user.
  • the LED fluorescent lamp according to the present invention may be the AC LED fluorescent lamp capable of decreasing power and cost consumption by using an AC LED and an AC driving circuit board and excluding the AC-DC converter.
  • An LED fluorescent lamp according to the present invention is structured to minimize physical injury of a user using a floodlight cap of a plastic material in comparison with a conventional fluorescent lamp of a glass material, and may uniformly diffuse light.
  • an LED fluorescent lamp of the present invention may decrease eyestrain when the LED fluorescent lamp is implemented as a DC LED fluorescent lamp including an AC-DC converter, and may decrease cost and power consumption when the LED fluorescent lamp is implemented as an AC LED fluorescent lamp excluding an AC-DC converter.
  • an LED fluorescent lamp of the present invention has a merit that the LED fluorescent lamp may be conveniently repaired and recycled when the LED fluorescent lamp has a problem, because a floodlight cap and a frame may be attached to and detached from each other, each LED may be mounted on and removed from an LED circuit board, and also the LED circuit board may be attached to and detached from the frame. Also, the present invention cools the LED fluorescent lamp through a frame of a material easy to emitting a heat generated in the LED fluorescent lamp, and thus the present invention may further stabilize the operation of the LED fluorescent lamp.

Abstract

The present invention relates to a fluorescent lamp using a plurality of LEDs, and more particularly to an LED fluorescent lamp including a floodlight cap; a frame combined with the floodlight cap to form a cylinder type structure with the floodlight cap; an LED circuit board established between the floodlight cap and the frame and including a plurality of LEDs arranged with a predetermined interval; an insulation pad established on a surface of the LED circuit board; a driving circuit board established between the insulation pad and the frame, surrounded by an insulation tube and electrically connected with the LED circuit board; a cylinder type structure power supplying connection termination CT fixing both longitudinal ends of the floodlight cap and the frame, and connected with the driving circuit board. Therefore, the LED fluorescent lamp may decrease power consumption and an eyestrain and ensure a security of a user.

Description

[DESCRIPTION] [Invention Title]
FLUORESCENT LAMP USING LED
[Technical Field]
The present invention relates to an LED fluorescent lamp capable of being used semi-permanently by using an LED, and more particularly to an LED fluorescent lamp that may be conveniently recycled and repaired and may ensure a security of a user, decrease an eyestrain and increase a security through a heat emission function of the LED fluorescent lamp.
[Background Art]
An LED fluorescent lamp has been developed for solving a problem of a conventional fluorescent lamp used in most of house and office and so on and power consumption of the LED fluorescent lamp is only 20% compared with a fluorescent lamp using a fluorescent material. Also, the LED fluorescent lamp has merits that a lifetime of the LED fluorescent lamp may be prolonged up to ten-years and the LED fluorescent lamp may reduce environmental problems because the LED fluorescent lamp does not use a heavy metal such as lead or mercury.
An LED using a characteristic of a light-emitting semiconductor is mainly used in a liquid crystal display device of a cellular phone, an electric signboard, a dashboard of a car and so on. In the future, the LED will be used as an indoor lamp of a car, a signboard, a backlight unit of a liquid crystal display device and a general lighting, etc.
As an example of an LED lamp used in a general lighting and so on is disclosed in Korean Utility Model Registration NO. 294471. The above disclosed light-emitting diode (LED) lamp includes a circuit board connecting a plurality of light-emitting diodes, a control unit and a power unit, and the circuit board is inserted in a glass tube.
However, in this structure, a position of the circuit board on which the light-emitting diodes are established may be changed by external impacts, and thus a direction of light illumination may be changed. In addition, physical damage due to user's maltreatment may be serious because a material protecting the circuit board is a glass as the conventional fluorescent lamp.
Referring to a diagram attached in the disclosed utility, a fixing ring is used for fixing the light-emitting diode. When the fixing ring is manufactured with a metal material, the light- emitting diode may be detached from the fixing ring and destroyed because the metal is expanded according to a heat generated from the light-emitting diode and metal elasticity is decreased as the LED lamp is used for a long time. When the fixing ring is manufactured with a plastic, the fixing ring may be easily broken even by a small impact in comparison with the metal.
As another example, Korean Patent Laid-open Publication No.
10-2004-0081848 is related to a light-emitting diode lamp traffic light including a circuit board on which a plurality of light emitting diodes are established, a fixed direction maintenance member for light refraction, a rear case, a power supply device and a fixing member.
However, in the structure of the invention described above, the fixed direction maintenance member, the circuit board and the rear case are sequentially fixed by a bolt, and thus the light emitting diode lamp traffic light has poor durability because such fixing is unstable due to a possibility of bolt looseness and water may penetrate into the traffic light. [Disclosure] [Technical Problem]
The present invention is directed to provide a semi-permanent LED fluorescent lamp capable of decreasing an eyestrain by supplying a DC voltage, capable of increasing a security of a user by using a convex lens of a plastic material instead of a glass material and capable of being conveniently recycled and repaired since components of the LED fluorescent lamp may be assembled and disassembled with sliding attachment/detachment method.
The present invention is also directed to provide an LED fluorescent lamp having a frequent- cooling function by quickly emitting a heat occurred due to LED lighting.
[Technical Solution]
An LED fluorescent lamp according to the present invention includes a floodlight cap formed with a plastic material and having a convex lens type; a frame combined with the floodlight cap to forma cylinder type structure with the flood cap and having a combining mean of a sling method at inside and outside of the frame; an LED circuit board established between the floodlight cap and the frame, and including a plurality of DC LEDs arranged with a predetermined interval; an insulation pad established between the LED circuit board and the frame to insulate the LED circuit board and the frame; a DC driving circuit board established between the insulation pad and the frame, surrounded by an insulation tube, and electrically connected with the LED circuit board; a cylinder type power supplying connection termination CT configured to fix both longitudinal ends of the floodlight cap and the frame and configured to supply DC voltage to the driving circuit board. [Advantageous Effects]
As mentioned above, an LED fluorescent lamp according to the present invention is structured to minimize physical injury of a user using a floodlight cap of a plastic material in comparison with a conventional fluorescent lamp of a glass material, and may uniformly diffuse light.
Also, an LED fluorescent lamp of the present invention may decrease eyestrain when the LED fluorescent lamp is implemented as a DC LED fluorescent lamp including an AC-DC converter, and may decrease cost and power consumption when the LED fluorescent lamp is implemented as an AC LED fluorescent lamp excluding an AC-DC converter.
Also, an LED fluorescent lamp of the present invention has a merit that the LED fluorescent lamp may be conveniently repaired and recycled when the LED fluorescent lamp has a problem, because a floodlight cap and a frame may be attached to and detached from each other, each LED may be mounted on and removed from an LED circuit board, and also the LED circuit board may be attached to and detached from the frame.
Also, the present invention cools the LED fluorescent lamp through a frame of a material easy to emitting a heat generated in the LED fluorescent lamp, and thus the present invention may further stabilize the operation of the LED fluorescent lamp.
[Description of Drawings]
FIG. 1 illustrates a perspective view of an LED fluorescent lamp according to the present invention, in which a portion of the LED fluorescent lamp is cross-sectioned.
FIG. 2 illustrates a vertical cross-sectional view of an LED fluorescent lamp according to the present invention.
FIG. 3 illustrates a vertical cross-sectional view of a combining mean of a frame in an LED fluorescent lamp according to the present invention.
FIG. 4 is a detailed diagram illustrating an LED circuit board in an LED fluorescent lamp according to the present invention.
[Best Mode]
Hereinafter, an LED fluorescent lamp of the present invention will be described with reference to the diagrams.
FIG. 1 illustrates a perspective view of an LED fluorescent lamp according to the present invention, in which a portion of the LED fluorescent lamp is cross-sectioned, and FIG. 2 illustrates a vertical cross-sectional view of an LED fluorescent lamp according to the present invention.
The LED fluorescent lamp according to the present invention illustrated in the FIGS. 1 and 2, includes a floodlight cap 100, a frame 200 that is combined with the flood cap 100 to form a cylinder type structure, an LED circuit board 300 including a plurality of LEDs 301 arranged with a predetermined interval, a driving circuit board 400 electrically connected to the LED circuit board 300, and a reflection board 500.
Here, the floodlight cap 100 may be formed with half circle type, one-third circle type, one-fourth circle type and so on in order to form a cylinder type structure in combination to the frame 200. The frame 200 may be formed with half circle type, two-third circle type, three-fourth circle type and so on depending on the type of the floodlight cap 100, thereby selectively increasing an amount of penetrated light or a solidity of the LED fluorescent lamp.
The floodlight cap 100 is formed with a floodlight lens 101 of a convex lens type to uniformly diffuse light, and a fluorescent material 102 for converting a blue light or an ultraviolet light from the LEDs into a white light is coated on the surface of the floodlight lens 101. A material of the floodlight lens 101 may be plastic in consideration of a security of a user. Additionally, the floodlight cap 100 includes protrusion portions 103 formed along both lateral ends of the floodlight cap 100 for combining the floodlight cap 100 with the frame 200. Such combining means will be described in detail with the description of the frame 200.
For example, the frame 200 may be formed with a material such as a light aluminum alloy having a high thermal conductivity so as to promptly emit out a heat generated in the LED fluorescent lamp according to the present invention.
FIG. 3 illustrates a vertical cross-sectional view of a combining mean of a frame in an LED fluorescent lamp according to the present invention.
As illustrated in FIG. 3, fixing grooves 201, which are combined with the protrusion portions 103 of the floodlight cap 100, are formed on an outer surface of the frame 200 and thus the protrusion portions 103 may be combined with or detached from the fixing grooves 201 with sliding method. A partition 203 is formed between inside surfaces of the frame 200 along a longitudinal direction and ribs 204 with a predetermined interval are formed on a bottom surface of the partition 203 such that insertion grooves 202 are formed between the partition 203 and the ribs 204. Left and right lateral ends of the LED circuit board 300 are combined with and detached from the insertion grooves 202 with sliding method. Intervals and widths of the protrusion portions 103, the fixing grooves 201 and the insertion grooves 202 may be adjusted for convenience of checking a problem, repairing and recycling the LED fluorescent lamp when the problem occurs in the LED fluorescent lamp. The frame 200 may be manufactured with injection molding method.
FIG. 4 is a detailed diagram illustrating an LED circuit board in an LED fluorescent lamp according to the present invention. As illustrated in FIG. 4, the LED circuit board 300 includes a plurality of
LEDs 301 and a plurality of pin holes 302, and thus the LED circuit board 300 having a structure that each LED 301 is inserted into or detached from each pin hole 302. Through this structure, when a specific LED has a problem, only the specific LED may be replaced with a new LED, thereby enhancing cost efficiency.
The LED 301 is a semiconductor device capable of generating a high intensity of illumination with a low power. For example, in a medical field or a semiconductor field, UV LED (Ultraviolet Light Emitting Diode) may be used according to a specific purpose. Also, an insulation pad 303 may be further included between the LED circuit board 300 and the frame 200 to perfectly insulate an electrical connection (short circuit) between the LED circuit board 300 and the frame 200.
Referring again to FIG. 1 and FIG. 2, connection terminals CT fix left and right ends of the floodlight cap 100 and the frame 200, and the connection terminals CT are connected to a driving circuit board 400 to supply power. The connection terminals CT may have a structure corresponding to a conventional fluorescent lamp socket for compatibility with the conventional fluorescent lamp socket. The driving circuit board 400 surrounded by an insulation tube 401 is established at inner space between the insulation pad 303 and the frame 200, and the driving circuit board 400 is connected with the LED circuit board to control the LED circuit board 300.
The reflection board 500 reflects light emitted from the LED 301 so that the reflected light may be in a direction toward the floodlight cap 100, The reflection board 500 is established on a lower surface of the LED circuit board 300.
In some embodiments, the LED fluorescent lamp according to the present invention may be a DC LED fluorescent lamp including an AC-DC converter in the connection terminal CT, using a DC LED as the LED 301, and using a DC driving circuit board as the driving circuit board 400 for decreasing eyestrain of a user. In some embodiments, the LED fluorescent lamp according to the present invention may be the AC LED fluorescent lamp capable of decreasing power and cost consumption by using an AC LED and an AC driving circuit board and excluding the AC-DC converter.
[Industrial Applicability] An LED fluorescent lamp according to the present invention is structured to minimize physical injury of a user using a floodlight cap of a plastic material in comparison with a conventional fluorescent lamp of a glass material, and may uniformly diffuse light.
Also, an LED fluorescent lamp of the present invention may decrease eyestrain when the LED fluorescent lamp is implemented as a DC LED fluorescent lamp including an AC-DC converter, and may decrease cost and power consumption when the LED fluorescent lamp is implemented as an AC LED fluorescent lamp excluding an AC-DC converter.
Also, an LED fluorescent lamp of the present invention has a merit that the LED fluorescent lamp may be conveniently repaired and recycled when the LED fluorescent lamp has a problem, because a floodlight cap and a frame may be attached to and detached from each other, each LED may be mounted on and removed from an LED circuit board, and also the LED circuit board may be attached to and detached from the frame. Also, the present invention cools the LED fluorescent lamp through a frame of a material easy to emitting a heat generated in the LED fluorescent lamp, and thus the present invention may further stabilize the operation of the LED fluorescent lamp.

Claims

[CLAIMS]
1. An LED fluorescent lamp, comprising: a floodlight cap 100; a frame 200 combined with the floodlight cap 100 to form a cylinder type structure with the floodlight cap 100; an LED circuit board 300 established between the floodlight cap 100 and the frame 200, the LED circuit board 300 including a plurality of LEDs 301 arranged with a predetermined interval; an insulation pad 303 established between the LED circuit board 300 and the frame 200 to insulate the LED circuit board 300 and the frame 200; a driving circuit board 400 fixed and established in the frame 200, the driving circuit board 400 being surrounded by an insulation tube 401 and electrically connected with the LED circuit board 300; and a power supplying connection termination CT configured to fix left and right longitudinal ends of the floodlight cap 100 and the frame 200, the power supplying connection termination CT being connected with the driving circuit board 400 and having cylinder type structure, wherein the floodlight cap 100 includes a floodlight lens 101 of a convex lens type for uniformly diffusing light, and a fluorescent material is coated on the floodlight lens 101.
2. The LED fluorescent lamp of claim 1, wherein protrusion portions 103 are formed on lateral ends of the floodlight cap 100 along a longitudinal direction, fixing grooves 201 corresponding to the protrusion portions 103 are formed on an outer surface of the frame 200, such that the protrusion portions 103 are attached to and detached from the fixing grooves 201 by sliding operation.
3. The LED fluorescent lamp of claim 2, wherein the frame 200 includes a partition 203 formed between inside surfaces of the frame 200 along the longitudinal direction and ribs 204 with a predetermined interval formed on a bottom surface of the partition 203 such that insertion grooves 202 are formed between the partition 203 and the ribs 204, left and right lateral ends of the LED circuit board 300 are attached to and detached from the insertion grooves 202 by sliding operation.
4. The LED fluorescent lamp of claim 1, wherein a reflection board 500 is further established on the LED circuit board 300.
5. The LED fluorescent lamp of claim 1, wherein a plurality of pin holes 302 are formed on the LED circuit board 300 such that each LED 301 is attached to and detached from each pin hole 302.
PCT/KR2008/006512 2007-11-05 2008-11-05 Fluorescent lamp using led WO2009061124A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0112317 2007-11-05
KR1020070112317A KR100827270B1 (en) 2007-11-05 2007-11-05 Fluorescent lamp using led

Publications (2)

Publication Number Publication Date
WO2009061124A2 true WO2009061124A2 (en) 2009-05-14
WO2009061124A3 WO2009061124A3 (en) 2009-07-30

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Country Status (2)

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KR (1) KR100827270B1 (en)
WO (1) WO2009061124A2 (en)

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CN102777788A (en) * 2012-06-29 2012-11-14 苏州晶雷光电照明科技有限公司 Light-emitting diode (LED) fluorescent lamp tube
DE102011050908A1 (en) * 2011-06-08 2012-12-13 Dietmar Müller Light-emitting diode lamp and circuit for controlling a light source
EP2602544A1 (en) * 2011-12-09 2013-06-12 GIO Optoelectronics Corp. Light emitting apparatus
WO2014113743A2 (en) * 2013-01-21 2014-07-24 Thomas Spinelli System for adapting an existing fluorescent light fixture with an led luminair
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