EP2546572A1 - Die-casting led energy-saving lamp - Google Patents

Die-casting led energy-saving lamp Download PDF

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Publication number
EP2546572A1
EP2546572A1 EP10847210A EP10847210A EP2546572A1 EP 2546572 A1 EP2546572 A1 EP 2546572A1 EP 10847210 A EP10847210 A EP 10847210A EP 10847210 A EP10847210 A EP 10847210A EP 2546572 A1 EP2546572 A1 EP 2546572A1
Authority
EP
European Patent Office
Prior art keywords
lamp
die
casting
groove
mask
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP10847210A
Other languages
German (de)
French (fr)
Other versions
EP2546572A4 (en
Inventor
Jianguo Sun
Chenglin Pan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Handson Co Ltd
Nanjing University of Aeronautics and Astronautics
Original Assignee
Nanjing Handson Co Ltd
Nanjing University of Aeronautics and Astronautics
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 Nanjing Handson Co Ltd, Nanjing University of Aeronautics and Astronautics filed Critical Nanjing Handson Co Ltd
Publication of EP2546572A1 publication Critical patent/EP2546572A1/en
Publication of EP2546572A4 publication Critical patent/EP2546572A4/en
Withdrawn legal-status Critical Current

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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
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • 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
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • 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
    • F21V17/101—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 permanently, e.g. welding, gluing or riveting
    • 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
    • F21V17/12—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 by screwing
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/007—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing
    • F21V23/009—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing the casing being inside the housing of the lighting device
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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 a die-casting LED energy-saving lamp, and more particularly, to an LED energy-saving lamp, of which the light source is power LED.
  • the present invention belongs to the technical field of semiconductor lighting.
  • Incandescent lamps have been used in lighting for a period of time, but now they are nearing their ends. Under the backgrounds of global climatic changes and energy shortages, it is of great concern to seek more energy saving lighting schemes.
  • the LED energy-saving lamp is a new kind of environmental-friendly, high efficient, safer and more reliable lighting fixture.
  • the LED energy-saving lamp Due to lighting effect and production cost, currently the LED energy-saving lamp is not competitive against the traditional high efficient light sources in the field of wide area white lighting and flood lighting. But the LED energy-saving lamp has incomparable advantages over the traditional light sources in fields of low power lighting, local lighting or safety lighting.
  • either low power LEDs or high power LEDs may be used to produce the LED energy-saving lamp.
  • Practice proves that the light decay of the low power LED is faster than that of the high power LED, although the production cost of the low power LED is lower than that of the high power LED. What's more, too many low power LEDs are required in the LED energy-saving lamp, so it is inconvenient in assembling.
  • the LED energy-saving lamp produced with low power LEDs commonly has low lighting effect and short lifetime, and accidents due to too high temperature may be caused during the operation of the LED energy-saving lamp. In consideration of the above, it is more reasonable to produce the LED energy-saving lamp with high power LEDs.
  • the present invention aims at providing a die-casting LED energy-saving lamp, which is provided with an LED light source module comprising LEDs with power of one or more watts, to solve the problems of serious light decay and heat dissipation of the traditional low power LEDs. Also the present invention provides a producing scheme with simple process and low cost, so as to promote the timely implementation of new technologies.
  • a die-casting LED energy-saving lamp comprising a lamp mask, an LED light source module, a lamp body, an insulated casing, a driving power supply and a lamp holder, wherein, a plurality of straight heat dissipating fins and heat dissipating grooves are uniformly arranged around an outer wall of the lamp body; top of the lamp body of the high power energy-saving lamp is provided with a flat-bottomed heat-conducting round platform which has a groove along its periphery; the LED light source module is fixed on a surface of the flat-bottomed heat-conducting round platform; the lamp mask is fixed to the flat-bottomed heat-conducting round platform with the aid of the groove; an inner cavity is formed in center of heat dissipating structure of the lamp body; the driving power supply and the insulated casing are disposed in the inner cavity; the insulated casing is connected and fixed to a bottom of the flat-bottomed heat-conducting round platform; the lamp holder is connected and fixed
  • the LED light source module a metal circuit board and monochromatic or polychromatic LEDs with power of one or more Watts, which are attached on a heat dissipating LED substrate; the LEDs are individually or integrally packaged and attached; and a light exit of the LED light source module corresponds to a position of the lamp mask.
  • the lamp mask is made of glass, colophony or a mixture of polycarbonate, which has a light transmittance of over 95%; the lamp mask has a shape of a semisphere, spheroid, a column or a prism; and an inner wall of the lamp mask is frosted or additionally provided with intensifying coatings.
  • the groove has several outwards concaves along an inner side of its outer wall, and the outer periphery of the outer wall forms a circumferential rib; and the lamp mask is fixed in the groove of the lamp body by adhesive.
  • inner walls of the groove are provided with threads; and the lamp mask is fixed in the groove by means of the threads.
  • bottom of the groove is provided with screw holes; and the lamp mask is fixed in the groove with screws.
  • the lamp body made of aluminum or aluminum alloy is provided with straight heat dissipating fins and heat dissipating grooves; the outer edge of the heat dissipating fin is chamfered and circular, and the bottom of the heat dissipating groove forms a semi circle processed by die casting and cutting; and surfaces of the heat dissipating grooves are processed by sandblasting, oxidizing and polishing.
  • the insulated casing is cylindrical; a slot is formed in an inner cavity of the cylindrical insulated casing by die-casting; and the drive power supply is inserted in the slot.
  • the drive power supply is provided with a rectangular printed circuit board; the cylindrical insulated casing has a semicircular opening at the top, the other part of the top forms a closed semicircular surface, at the central position of which is provided with a screw hole; and the insulated casing is fixed on the lamp body with screw.
  • the lamp holder of the LED energy-saving lamp is a metal interface, and is riveted to the insulated casing along an inner periphery of the lamp holder; and the metal interface is an E-27 radioceramic screw lamp holder made of nickel-plated copper.
  • the present invention has better stability and longer lifetime than the traditional incandescent tube or the low pressure fluorescent lamp.
  • the lamp body of the energy-saving lamp designed by means of die casting has good performance of heat dissipation and provides convenience for quick assembling of LED products.
  • the LED energy-saving lamp used for lighting radiates soft light, has beautiful appearance and colors, also has qualities of low loss, lower energy consumption and green environmental protection.
  • the die-casting LED energy-saving lamp is apt for being widely used for prolonged lighting in families, shops, banks, hospitals, hotels, restaurants and other public places.
  • Fig.1 is an exploded view illustrating an embodiment of the die-casting LED energy-saving lamp of the present invention
  • Fig. 3 is a stereogram illustrating the assembled die-casting LED energy-saving lamp shown in Fig.1 .
  • the die-casting LED energy-saving lamp comprises a lamp mask 1, an LED light source module 2, a lamp body 3, an insulated casing 4, a driving power supply 5 and a lamp holder 6 for electric connection.
  • Top of the lamp body 3 of the high power energy-saving lamp is provided with a flat-bottomed heat-conducting round platform.
  • the LED light source module 2 is fixed on a surface of the flat-bottomed heat-conducting round platform fixed on the top of a heat dissipating structure of the lamp body 3.
  • the flat-bottomed heat-conducting round platform has a groove along its periphery, and the lamp mask 1 is assembled on the lamp body 3 with the aid of the groove.
  • Heat dissipating fins and heat dissipating grooves are uniformly arranged around an outer wall of the lamp body 3, and constitute the heat dissipating structure of the lamp body 3.
  • An inner cavity is formed in the center of the heat dissipating structure of the lamp body 3, and the cylindrical insulated casing 4, which is fixed with the driving power supply 5, is disposed in the inner cavity.
  • the cylindrical insulated casing 4 is connected and fixed to an upper portion of the lamp holder and a bottom of the flat-bottomed heat-conducting round platform of the lamp body.
  • the LED light source module 2 comprises a metal circuit board 8 and monochromatic or polychromatic LEDs 7 with power of one or more Watts.
  • the LEDs 7 are individually or integrally packaged and attached on a heat dissipating LED substrate by thermally conductive adhesive.
  • the heat dissipating LED substrate is, namely, the metal circuit board 8.
  • the lamp mask 1 is disposed at a light exit of the LED light source module 2.
  • the heat dissipating LED substrate is embedded and fixed with the aid of the groove at the top of the inner cavity of the lamp body.
  • the LED light source module may be disposed above the groove at the top of the inner cavity of the lamp body.
  • the flat-bottomed heat-conducting round platform is provided with a flat-bottomed boss, and the groove is annular and located along the periphery of the flat-bottomed boss.
  • the metal circuit board 8 of the LED light source module 2 is fixed on the flat-bottomed boss, and the lamp mask 1 is fixed to the groove.
  • the lamp mask 1 may have a shape of a semisphere, a column or a prism, and an inner wall of the lamp mask may be additionally provided with an intensifying coating or may be frosted.
  • the lamp mask 1 is made of glass, colophony or a mixture of polycarbonate, which has a light transmittance of over 95%.
  • the lamp mask 1 is not only shatterproof, dustproof and antiaging, but also has a grinding effect.
  • the light shining through the lamp mask is soft and even, free from glare, and has a high lamp flux.
  • the lamp mask is safe and reliable, and can be processed by simple processing method.
  • the groove has several outwards concaves along an inner side of its outer wall, and the outer periphery of the outer wall forms a circumferential rib.
  • the lamp mask 1 is fixed on the lamp body 3 by adhesive.
  • the groove provides convenience for fixing the lamp mask, also prevents attaching and fixing adhesive from overflowing excessively, so that the installation and maintenance of the lamp mask is easier.
  • the lamp body 3 with heat dissipating function is made of metal, which is usually aluminum or aluminum alloy.
  • the lamp body 3 is processed by machining such as die casting, cutting and so on.
  • a plurality of straight heat dissipating fins and heat dissipating grooves are uniformly arranged around the outer periphery of the lamp body 3.
  • the outer edge of the heat dissipating fin is chamfered and circular, and the bottom of the heat dissipating grooves forms a semi circle.
  • Surfaces of the heat dissipating fins and heat dissipating grooves are processed by sandblasting, oxidizing and polishing, in order to increase the area of heat dissipating surface, speed up heat dissipating and improve heat dissipating effect.
  • the LED light source module 2 may be disposed above the groove on the top of the inner cavity of the lamp body.
  • light emergence angle and position of the light source can be adjusted by changing the height of the flat-bottomed heat-conducting round platform on the top of the inner cavity of the lamp body.
  • the lamp body 3 and the cylindrical insulated casing 4 are connected with built-in bolts or other detachable connectors.
  • the cylindrical insulated casing 4 is disposed inside the inner cavity of the lamp body 3, and the driving power supply 5 is enclosed in the cylindrical insulated casing 4.
  • the cylindrical insulated casing 4 has a semicircular opening at the top, the other part of the top forms a closed semicircular surface, at the central position of which is provided with a screw hole, in order to fix the cylindrical insulated casing 4 firmly at the bottom of the flat-bottomed heat-conducting round platform of the lamp body 4.
  • the driving power supply 5 is connected with electrodes of the LED light source module 2 through wire to form electrical connections.
  • the lamp holder 6, a constituent part of the LED energy-saving lamp is a metal interface
  • the metal interface may be an E-27 radioceramic screw lamp holder made of nickel-plated copper or any other standard lamp holders.
  • the inner side of the metal interface is provided with first threads which match with second threads at the bottom of the cylindrical insulated casing 4, so that the lamp holder can be riveted to the cylindrical insulated casing 4 along its inner periphery.
  • the die-casting LED energy-saving lamp has better stability and longer lifetime than the incandescent tube or low pressure fluorescent lamp. What's more, the die-casting LED energy-saving lamp radiates soft light, has beautiful appearance and colors, also has qualities of low loss, lower energy consumption and green environmental protection. It is widely used for prolonged lighting in families, shops, banks, hospitals, hotels, restaurants and other public places.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

A die-casting LED energy-saving lamp, comprises a lamp mask (1), LED light source components (2), a lamp body (3), an insulated shell (4), a drive power supply (5) and a lamp head (6). A plurality of straight heat radiation fins and heat radiation grooves are uniformly arranged around the external edge of the lamp body (3). A flat-bottom heat-conductiveround platform with a groove around it is arranged on the top of the lamp body (3). LED light source components (2) are fixed on the surface of the flat-bottom heat-conductive round platform. The lamp mask (1) is embedded in the groove of the flat-bottom heat-conductive round platform. A column cavity is formed in the center of the heat radiation structure of the lamp body (3). The drive power supply (5) and the insulated shell (4) are inserted into the column cavity after being integratively assembled. The insulated shell (4) is fixed with the bottom of the flat-bottom heat-conductive round platform. The lamp head (6) is fixed on the end of the insulated shell (4) far from the LED light source components (2), and is insulated from and fixed with the metallic lamp body (3).

Description

    TECHNICAL FIELD
  • The present invention relates to a die-casting LED energy-saving lamp, and more particularly, to an LED energy-saving lamp, of which the light source is power LED. The present invention belongs to the technical field of semiconductor lighting.
    • BACKGROUND OF THE INVENTION
  • Incandescent lamps have been used in lighting for a period of time, but now they are nearing their ends. Under the backgrounds of global climatic changes and energy shortages, it is of great concern to seek more energy saving lighting schemes. The LED energy-saving lamp is a new kind of environmental-friendly, high efficient, safer and more reliable lighting fixture.
  • Due to lighting effect and production cost, currently the LED energy-saving lamp is not competitive against the traditional high efficient light sources in the field of wide area white lighting and flood lighting. But the LED energy-saving lamp has incomparable advantages over the traditional light sources in fields of low power lighting, local lighting or safety lighting. In general, either low power LEDs or high power LEDs may be used to produce the LED energy-saving lamp. Practice proves that the light decay of the low power LED is faster than that of the high power LED, although the production cost of the low power LED is lower than that of the high power LED. What's more, too many low power LEDs are required in the LED energy-saving lamp, so it is inconvenient in assembling. Additionally, the LED energy-saving lamp produced with low power LEDs commonly has low lighting effect and short lifetime, and accidents due to too high temperature may be caused during the operation of the LED energy-saving lamp. In consideration of the above, it is more reasonable to produce the LED energy-saving lamp with high power LEDs.
    • SUMMARY OF THE INVENTION
  • On account of the defects in the prior art, the present invention aims at providing a die-casting LED energy-saving lamp, which is provided with an LED light source module comprising LEDs with power of one or more watts, to solve the problems of serious light decay and heat dissipation of the traditional low power LEDs. Also the present invention provides a producing scheme with simple process and low cost, so as to promote the timely implementation of new technologies.
  • The object of the present invention is achieved by the following technical schemes:
  • A die-casting LED energy-saving lamp, comprising a lamp mask, an LED light source module, a lamp body, an insulated casing, a driving power supply and a lamp holder, wherein, a plurality of straight heat dissipating fins and heat dissipating grooves are uniformly arranged around an outer wall of the lamp body; top of the lamp body of the high power energy-saving lamp is provided with a flat-bottomed heat-conducting round platform which has a groove along its periphery; the LED light source module is fixed on a surface of the flat-bottomed heat-conducting round platform; the lamp mask is fixed to the flat-bottomed heat-conducting round platform with the aid of the groove; an inner cavity is formed in center of heat dissipating structure of the lamp body; the driving power supply and the insulated casing are disposed in the inner cavity; the insulated casing is connected and fixed to a bottom of the flat-bottomed heat-conducting round platform; the lamp holder is connected and fixed to one end of the insulated casing, which is far from the LED light source module; and the lamp holder is fixed to and insulated from the lamp body.
  • Preferably, with respect to the die-casting LED energy-saving lamp above, the LED light source module a metal circuit board and monochromatic or polychromatic LEDs with power of one or more Watts, which are attached on a heat dissipating LED substrate; the LEDs are individually or integrally packaged and attached; and a light exit of the LED light source module corresponds to a position of the lamp mask.
  • Preferably, the lamp mask is made of glass, colophony or a mixture of polycarbonate, which has a light transmittance of over 95%; the lamp mask has a shape of a semisphere, spheroid, a column or a prism; and an inner wall of the lamp mask is frosted or additionally provided with intensifying coatings.
  • Preferably, the groove has several outwards concaves along an inner side of its outer wall, and the outer periphery of the outer wall forms a circumferential rib; and the lamp mask is fixed in the groove of the lamp body by adhesive. Preferably, inner walls of the groove are provided with threads; and the lamp mask is fixed in the groove by means of the threads. Preferably, bottom of the groove is provided with screw holes; and the lamp mask is fixed in the groove with screws. Preferably, the lamp body made of aluminum or aluminum alloy is provided with straight heat dissipating fins and heat dissipating grooves; the outer edge of the heat dissipating fin is chamfered and circular, and the bottom of the heat dissipating groove forms a semi circle processed by die casting and cutting; and surfaces of the heat dissipating grooves are processed by sandblasting, oxidizing and polishing.
  • Preferably, the insulated casing is cylindrical; a slot is formed in an inner cavity of the cylindrical insulated casing by die-casting; and the drive power supply is inserted in the slot.
  • Preferably, the drive power supply is provided with a rectangular printed circuit board; the cylindrical insulated casing has a semicircular opening at the top, the other part of the top forms a closed semicircular surface, at the central position of which is provided with a screw hole; and the insulated casing is fixed on the lamp body with screw.
  • Preferably, the lamp holder of the LED energy-saving lamp is a metal interface, and is riveted to the insulated casing along an inner periphery of the lamp holder; and the metal interface is an E-27 radioceramic screw lamp holder made of nickel-plated copper.
  • The present invention has better stability and longer lifetime than the traditional incandescent tube or the low pressure fluorescent lamp. What's more, the lamp body of the energy-saving lamp designed by means of die casting has good performance of heat dissipation and provides convenience for quick assembling of LED products. The LED energy-saving lamp used for lighting radiates soft light, has beautiful appearance and colors, also has qualities of low loss, lower energy consumption and green environmental protection. The die-casting LED energy-saving lamp is apt for being widely used for prolonged lighting in families, shops, banks, hospitals, hotels, restaurants and other public places.
  • The die-casting LED energy-saving lamp of the present invention will be described in more details with reference to the embodiments and the accompanying figures in order to make the technical schemes of the present invention easily understood and grasped.
    • BRIEF DESCRIPTION OF THE DRAWINGS
    • Fig.1 is an exploded view illustrating an embodiment of the die-casting LED energy-saving lamp of the present invention;
    • Fig.2 is a sectional view illustrating the structure of the die-casting LED energy-saving lamp shown in Fig.1;
    • Fig. 3 is a stereogram illustrating the assembled die-casting LED energy-saving lamp shown in Fig.1.
  • The elements in the above figures are denoted as follows:
    • 1 ~ lamp mask;    2 ~ LED light source module;    3 ~ lamp body;
    • 4 ~ insulated casing;    5 ~ driving power supply;    6 ~ lamp holder;
    • 7 ~ light-emitting diode (LED);    8 ~ metal circuit board.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Fig.1 is an exploded view illustrating an embodiment of the die-casting LED energy-saving lamp of the present invention, and Fig. 3 is a stereogram illustrating the assembled die-casting LED energy-saving lamp shown in Fig.1. As shown in Figs.1 and 3, the die-casting LED energy-saving lamp comprises a lamp mask 1, an LED light source module 2, a lamp body 3, an insulated casing 4, a driving power supply 5 and a lamp holder 6 for electric connection.
  • Top of the lamp body 3 of the high power energy-saving lamp is provided with a flat-bottomed heat-conducting round platform. The LED light source module 2 is fixed on a surface of the flat-bottomed heat-conducting round platform fixed on the top of a heat dissipating structure of the lamp body 3. The flat-bottomed heat-conducting round platform has a groove along its periphery, and the lamp mask 1 is assembled on the lamp body 3 with the aid of the groove. Heat dissipating fins and heat dissipating grooves are uniformly arranged around an outer wall of the lamp body 3, and constitute the heat dissipating structure of the lamp body 3. An inner cavity is formed in the center of the heat dissipating structure of the lamp body 3, and the cylindrical insulated casing 4, which is fixed with the driving power supply 5, is disposed in the inner cavity. The cylindrical insulated casing 4 is connected and fixed to an upper portion of the lamp holder and a bottom of the flat-bottomed heat-conducting round platform of the lamp body.
  • The LED light source module 2 comprises a metal circuit board 8 and monochromatic or polychromatic LEDs 7 with power of one or more Watts. The LEDs 7 are individually or integrally packaged and attached on a heat dissipating LED substrate by thermally conductive adhesive. The heat dissipating LED substrate is, namely, the metal circuit board 8. The lamp mask 1 is disposed at a light exit of the LED light source module 2. The heat dissipating LED substrate is embedded and fixed with the aid of the groove at the top of the inner cavity of the lamp body. The LED light source module may be disposed above the groove at the top of the inner cavity of the lamp body.
  • Top of the flat-bottomed heat-conducting round platform is provided with a flat-bottomed boss, and the groove is annular and located along the periphery of the flat-bottomed boss. The metal circuit board 8 of the LED light source module 2 is fixed on the flat-bottomed boss, and the lamp mask 1 is fixed to the groove. The lamp mask 1 may have a shape of a semisphere, a column or a prism, and an inner wall of the lamp mask may be additionally provided with an intensifying coating or may be frosted. The lamp mask 1 is made of glass, colophony or a mixture of polycarbonate, which has a light transmittance of over 95%. The lamp mask 1 is not only shatterproof, dustproof and antiaging, but also has a grinding effect. The light shining through the lamp mask is soft and even, free from glare, and has a high lamp flux. The lamp mask is safe and reliable, and can be processed by simple processing method. Preferably, the groove has several outwards concaves along an inner side of its outer wall, and the outer periphery of the outer wall forms a circumferential rib. The lamp mask 1 is fixed on the lamp body 3 by adhesive. The groove provides convenience for fixing the lamp mask, also prevents attaching and fixing adhesive from overflowing excessively, so that the installation and maintenance of the lamp mask is easier.
  • The lamp body 3 with heat dissipating function is made of metal, which is usually aluminum or aluminum alloy. The lamp body 3 is processed by machining such as die casting, cutting and so on. A plurality of straight heat dissipating fins and heat dissipating grooves are uniformly arranged around the outer periphery of the lamp body 3. The outer edge of the heat dissipating fin is chamfered and circular, and the bottom of the heat dissipating grooves forms a semi circle. Surfaces of the heat dissipating fins and heat dissipating grooves are processed by sandblasting, oxidizing and polishing, in order to increase the area of heat dissipating surface, speed up heat dissipating and improve heat dissipating effect.
  • The LED light source module 2 may be disposed above the groove on the top of the inner cavity of the lamp body. In order to increase the luminous efficiency of the die-casting LED energy-saving lamp, light emergence angle and position of the light source can be adjusted by changing the height of the flat-bottomed heat-conducting round platform on the top of the inner cavity of the lamp body.
  • As shown in Fig.2, the lamp body 3 and the cylindrical insulated casing 4 are connected with built-in bolts or other detachable connectors. The cylindrical insulated casing 4 is disposed inside the inner cavity of the lamp body 3, and the driving power supply 5 is enclosed in the cylindrical insulated casing 4. The cylindrical insulated casing 4 has a semicircular opening at the top, the other part of the top forms a closed semicircular surface, at the central position of which is provided with a screw hole, in order to fix the cylindrical insulated casing 4 firmly at the bottom of the flat-bottomed heat-conducting round platform of the lamp body 4. Additionally, the driving power supply 5 is connected with electrodes of the LED light source module 2 through wire to form electrical connections.
  • Preferably, the lamp holder 6, a constituent part of the LED energy-saving lamp, is a metal interface, and the metal interface may be an E-27 radioceramic screw lamp holder made of nickel-plated copper or any other standard lamp holders. The inner side of the metal interface is provided with first threads which match with second threads at the bottom of the cylindrical insulated casing 4, so that the lamp holder can be riveted to the cylindrical insulated casing 4 along its inner periphery.
  • In a word, the die-casting LED energy-saving lamp has better stability and longer lifetime than the incandescent tube or low pressure fluorescent lamp. What's more, the die-casting LED energy-saving lamp radiates soft light, has beautiful appearance and colors, also has qualities of low loss, lower energy consumption and green environmental protection. It is widely used for prolonged lighting in families, shops, banks, hospitals, hotels, restaurants and other public places.
  • What described above are preferred embodiments of the die-casting LED energy-saving lamp. It will be understood by those skilled in the art that various modifications and replacements may be made therein without departing from the scope of the invention.

Claims (10)

  1. A die-casting LED energy-saving lamp, comprising a lamp mask, an LED light source module, a lamp body, an insulated casing, a driving power supply and a lamp holder, wherein, a plurality of straight heat dissipating fins and heat dissipating grooves are uniformly arranged around an outer wall of the lamp body (3); a top of the lamp body of the high power energy-saving lamp is provided with a flat-bottomed heat-conducting round platform which has a groove along its periphery; the LED light source module is fixed on a surface of the flat-bottomed heat-conducting round platform; the lamp mask is fixed to the flat-bottomed heat-conducting round platform with the aid of the groove; an inner cavity is formed in center of heat dissipating structure of the lamp body; the driving power supply and the insulated casing are disposed in the inner cavity; the insulated casing is connected and fixed to a bottom of the flat-bottomed heat-conducting round platform; the lamp holder is connected and fixed to one end of the insulated casing, which is far from the LED light source module; and the lamp holder is fixed to and insulated from the lamp body.
  2. The die-casting LED energy-saving lamp according to claim 1, wherein, the LED light source module comprises a metal circuit board and monochromatic or polychromatic LEDs with power of one or more Watts, which are attached on a heat dissipating LED substrate; the LEDs are individually or integrally packaged and attached; and a light exit of the LED light source module corresponds to a position of the lamp mask.
  3. The die-casting LED energy-saving lamp according to claim 1, wherein, the lamp mask is made of glass, colophony or a mixture of polycarbonate, which has a light transmittance of over 95%; the lamp mask has a shape of a semisphere, a column or a prism; and an inner wall of the lamp mask is frosted or additionally provided with intensifying coatings.
  4. The die-casting LED energy-saving lamp according to claim 1, wherein, the lamp body is provided with the groove for assembling or fixing the lamp mask; the groove has several outwards concaves along an inner side of its outer wall, and outer periphery of the outer wall forms a circumferential rib; and the lamp mask is fixed in the groove of the lamp body by adhesive.
  5. The die-casting LED energy-saving lamp according to claim 1, wherein, the lamp body is provided with the groove for assembling or fixing the lamp mask; inner walls of the groove are provided with threads; and the lamp mask is fixed in the groove by means of the threads.
  6. The die-casting LED energy-saving lamp according to claim 1, wherein, the lamp body is provided with the groove for assembling or fixing the lamp mask; a bottom of the groove is provided with screw holes; and the lamp mask is fixed in the groove with screws.
  7. The die-casting LED energy-saving lamp according to claim 1, wherein, the lamp body made of aluminum or aluminum alloy is provided with straight heat dissipating fins and heat dissipating grooves; the outer edge of the heat dissipating fin is chamfered and circular, and the bottom of the heat dissipating grooves forms a semi circle processed by die casting and cutting; and surfaces of the heat dissipating grooves are processed by sandblasting, oxidizing and polishing.
  8. The die-casting LED energy-saving lamp according to claim 1, wherein, the insulated casing is cylindrical; a slot is formed in an inner cavity of the cylindrical insulated casing by die-casting; and the drive power supply is inserted in the slot.
  9. The die-casting LED energy-saving lamp according to claim 8, wherein, the drive power supply is provided with a rectangular printed circuit board; the cylindrical insulated casing has a semicircular opening at the top, the other part of the top forms a closed semicircular surface, at the central position of which is provided with a screw hole; and the insulated casing is fixed on the lamp body with screw.
  10. The die-casting LED energy-saving lamp according to claim 1, wherein, the lamp holder of the LED energy-saving lamp is a metal interface, and is riveted to the insulated casing along an inner periphery of the lamp holder; and the metal interface is an E-27 radioceramic screw lamp holder made of nickel-plated copper.
EP10847210.1A 2010-03-10 2010-04-29 LOW PRESSURE MOLDED LIGHT-EMITTING DIODE LAMP Withdrawn EP2546572A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2010201332425U CN201715285U (en) 2010-03-10 2010-03-10 Pressure-casting LED energy-saving lamp
PCT/CN2010/072330 WO2011109951A1 (en) 2010-03-10 2010-04-29 Die-casting led energy-saving lamp

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EP2546572A1 true EP2546572A1 (en) 2013-01-16
EP2546572A4 EP2546572A4 (en) 2014-07-02

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EP (1) EP2546572A4 (en)
CN (1) CN201715285U (en)
WO (1) WO2011109951A1 (en)

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EP3130845A1 (en) * 2013-02-28 2017-02-15 LG Innotek Co., Ltd. Lighting device
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Families Citing this family (8)

* Cited by examiner, † Cited by third party
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JP5275388B2 (en) * 2011-02-28 2013-08-28 株式会社東芝 Lighting device
CN102679292A (en) * 2011-03-11 2012-09-19 马士科技有限公司 Heat dissipation device for lamps and LED lamps including the heat dissipation device
JP2013033593A (en) * 2011-08-01 2013-02-14 Beat Sonic:Kk Led lamp
CN103062645A (en) * 2011-10-24 2013-04-24 广东德豪润达电气股份有限公司 Light-emitting diode (LED) lighting lamp
CN103185229A (en) * 2011-12-29 2013-07-03 邱庆彬 A kind of LED bread light
CN102865488A (en) * 2012-10-22 2013-01-09 东南大学 LED (light-emitting diode) light bulb
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Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100559073C (en) * 2005-04-08 2009-11-11 东芝照明技术株式会社 Lamp with a light source
JP4849305B2 (en) * 2005-04-08 2012-01-11 東芝ライテック株式会社 Bulb-type lamp
JP4725231B2 (en) * 2005-04-08 2011-07-13 東芝ライテック株式会社 Light bulb lamp
TWM303486U (en) * 2006-03-30 2006-12-21 Ching Huei Ceramics Co Ltd Lamp heat dissipation base structure
US20080037256A1 (en) * 2006-08-14 2008-02-14 Chi-Mao Li Heat conductor assembly of light source
JP5078604B2 (en) * 2007-12-28 2012-11-21 シャープ株式会社 INSTALLATION BODY AND LIGHTING DEVICE EQUIPPED WITH THE SAME
CN201284982Y (en) * 2008-11-05 2009-08-05 陈超 Lampshade
CN201354958Y (en) * 2008-12-24 2009-12-02 戴建国 Energy-saving environment-friendly LED lighting bulb
CN201382291Y (en) * 2009-04-14 2010-01-13 南京汉德森科技股份有限公司 LED energy-saving lamp
KR100932192B1 (en) * 2009-05-26 2009-12-16 김용철 LED luminaires with improved heat dissipation
KR100939231B1 (en) * 2009-09-23 2010-01-29 제이에스제이텍(주) Light emitting diode lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3130845A1 (en) * 2013-02-28 2017-02-15 LG Innotek Co., Ltd. Lighting device
RU191247U1 (en) * 2019-03-21 2019-07-31 Закрытое акционерное общество "БТМ" LED lamp

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EP2546572A4 (en) 2014-07-02
CN201715285U (en) 2011-01-19

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