EP3312495B1

EP3312495B1 - Light emitting device

Info

Publication number: EP3312495B1
Application number: EP17000735.5A
Authority: EP
Inventors: Minghao Wu; Hongkui JIANG; Hongbin Lin
Original assignee: Xiamen Eco Lighting Co Ltd
Current assignee: Xiamen Eco Lighting Co Ltd
Priority date: 2016-10-21
Filing date: 2017-04-28
Publication date: 2019-06-26
Anticipated expiration: 2037-04-28
Also published as: EP3312495A1; CN107975687A

Description

Field of invention

The present disclosure relates to a light emitting device, and more particularly to a light emitting device of light emitted diode.

Background of invention

With the continuous progress of light emitting diode technology, more and more products using the characteristics of light emitted diodes are designed. In addition to replacing the lamp in the past, a variety of light bulbs have also been developed.
Light emitted diode referred to as LED. And is made of a compound containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N), or the like. When the electrons recombine with the holes, visible light will be emitted, thus it can be used to make light emitted diodes. It can be used as an indicator, or displayed as words or numbers in the circuit and instruments. Gallium arsenide diode emits red light, gallium phosphide diode emits green light, silicon carbide diode emits yellow light, gallium nitride diode emits blue light. Because of its chemical properties, it also can be divided into organic light emitted diode (OLED) and inorganic light emitted diode(LED).
Lighting is an important part of human life, although the LED technology itself is quite mature, people still hope to design more lighting products to improve the quality of life. In order to achieve a variety of product designs, including cooling, power connection, driver, and even manufacturing cost, complexity, there are a wide range of technical issues to be resolved.
CN 205 619 017 discloses an LED light bulb; CN 205 350 910 discloses an LED luminous filament and an LED light bulb employing the LED luminous filament; US 2004/008525 discloses an LED electric bulb.

Summary of the invention

The present invention provides a lighting device according to independent claim 1. Various improvements to the light device are recited in the dependent claims.
The first embodiment of the instant disclosure provides a lighting device, comprising translucent shell, bottom base, lamp base, light bar module and metal support bar. The translucent shell may be fully translucent, or partially translucent. For example, the translucent shell could be made of a translucent material such as glass, plastic material, etc., and may be further atomized or patterned on the surface in whole or in part.
The bottom base is connected with the translucent shell to form a receiving space together. For example, when the lighting device is a light bulb, the bottom base is a bulb head, and two conductive terminals are provided in side and bottom for connecting to an external power source. In another embodiment, a removable or rechargeable battery is provided in the inner space. If the external power supply is directly connected, a driving circuit may be provided for converting the general indoor power to a voltage suitable for driving the light emitted diode.
The lamp base set on said bottom base, with a table-board, and said lamp base is arranged in said receiving space. The light bar module is formed by connecting two or more light bars in series, said two or more light bars have two supporting points, and the light bar module has two electrical connection points. Taking light emitted diode bulb as an example, a number of light emitted diode chips can be packaged in series into a light bar. And then the light bars can be further connected in series or in parallel. For a chip of light emitted diode, a positive voltage terminal and a negative voltage terminal are required. They can be connected to the voltage supply point of the drive circuit to drive the chip of light emitted diode to emit light.
Two or more metal support bars extend upwardly from said table-board of said lamp base and connect to said one support point, respectively. The upward direction mentioned here refers to a variety of directions extending away from the lamp base and towards the translucent shell.
In addition, two metal conducting bars extend upwardly from the lamp base and connect to two electrical connection points of the light bar module, respectively. Wherein said metal support bar, said light bar and said metal conducting bar form two substantial triangular frame structures. The triangular frame structure mentioned above does not need to be a geometrical triangle. As long as the whole structure similar to a triangle, substantially, all can belong to said substantial triangle frame structure. And, said metal support bar, said light bar and said metal conducting bar may respectively play a part or all sides of the triangular frame structure under different designs. Some available combination ways will be illustrated with some additional graphics as follows. In further designs, said substantial triangular frame structure is composed of polygons. The polygon includes three long sides, forming a triangular-like shape substantially. Needless to say, the present invention is not limited to these examples, as long as the combination ways can achieve a substantially similar effect, all should be considered to be within the scope of the present invention.
In a design, the lamp base also has a certain degree of transparency. For example, the lamp base could be made of glass. And the translucent shell also could be made of glass. When both the lamp base and the translucent shell are made of glass, it is possible to carry out the blow molding of the glass by using a conventional bulb manufacturing process, and to perform various predetermined shapes such as bulb type, water drop type, candle type, flat-head type, or all kinds of predetermined shapes.
A pipe may be left in the blown manufacturing process, it can be used to fill the cooling gas. The method of operation in practice includes placing the lamp in a vacuum environment and then pouring various cooling gases. In some embodiments, when the power of the light emitted diode is small, the cooling gas may not be completely filled but maintain the proportion of air at, for example, 3% or more. It not only can produce a certain adjustment to the light emitting effect, but also reduce the manufacturing process's requirements and cost.
In some embodiments, said table-board of said lamp base substantially kept flat, no raised configuration. This does not mean that a certain flat is necessary, but no substantially apparent raised structure. The support of light bar is mainly achieved by the metal support bar.
In some embodiments, the height of said table-board of said lamp base is lower than the bottom position of said light bar in said light bar module.
In some embodiments, said metal support bar connects and supports said light bar module through a fastening structure at said support point. For example, there are a certain bending, buckles, springs, hooks, grooves or bumps at the support point of the metal support bar or light bar, therefor the complicated welding process can be omitted. Or even the welding process is needed, it can further enhance the stability of the structure.
In some embodiments, the appearance characteristics of said metal support bar are substantially same as said metal conducting bar.
In some embodiments, said metal support bar and said light bar module constitute an assembly unit and form a predetermined shape, and then mounted to said lamp base in the manner of said assembly unit. In this way, the complexity of assembling can be reduced to a certain extent.
In some embodiments, the rigidity of said metal conducting bar can maintain it at a fixed shape. According to the invention, said metal support bar has a groove paralleled to the direction of said metal support bar extending from said lamp base. For example, said metal support bar is elongated and folded at a certain angle along the direction of extension to achieve greater rigidity with less material. In some embodiments, said metal support bar is nickel plated.
Another embodiment of the instant disclosure provides a lighting device, comprising light bulb shell; light bulb module, composed by two or more light emitted diode light bars in series, said two or more series light bars have two support points; transparent lamp base, equipped with a table-board without substantially apparent raised structure, said transparent lamp base and said bulb shell formed a receiving space; and two or more support bars, extended upwardly from said transparent lamp base and connected said support points respectively. In some embodiments, wherein said support bar is made up of metallic material, and substantially kept linear extending.

Brief description of the drawings

FIG.1 illustrates a schematic stereogram of a lighting device according to an embodiment of the present disclosure.
Fig. 2 illustrates another schematic stereogram of Fig. 1 at another angle.
FIG. 3 illustrates an a light bar with a light emitted diode chip according to an embodiment of the present disclosure.
FIG.4A illustrates a schematic diagram among metal support bar, metal conducting bar, light bar and lamp base according to an embodiment of the present disclosure.
FIG.4B illustrates a schematic diagram among metal support bar, metal conducting bar, light bar and lamp base according to another embodiment of the present disclosure.
FIG.4C illustrates a schematic diagram among metal support bar, metal conducting bar, light bar and lamp base according to another embodiment of the present disclosure.
FIG.4D illustrates a schematic diagram among metal support bar, metal conducting bar, light bar and lamp base according to another embodiment of the present disclosure.
FIG.4E illustrates a schematic diagram among metal support bar, metal conducting bar, light bar and lamp base according to another embodiment of the present disclosure.
FIG.5A illustrates a schematic stereogram of the relationship among metal support bar, metal conducting bar, light bar and lamp base according to an embodiment of the present disclosure.
FIG.5B illustrates a schematic stereogram of the relationship among metal support bar, metal conducting bar, light bar and lamp base according to another embodiment of the present disclosure.
FIG.6A illustrates a schematic stereogram of the relationship among metal support bar, metal conducting bar and light bar according to an embodiment of the present disclosure.
FIG.6B illustrates a schematic stereogram of the relationship among metal support bar, metal conducting bar and light bar according to another embodiment of the present disclosure.
FIG.6C illustrates a schematic stereogram of the relationship among metal support bar, metal conducting bar and light bar according to another embodiment of the present disclosure.
FIG.6D illustrates a schematic stereogram of the relationship among metal support bar, metal conducting bar and light bar according to another embodiment of the present disclosure.
FIG.7A illustrates a schematic stereogram of the relationship among metal support bar, metal conducting bar and light bar according to another embodiment of the present disclosure.
FIG.7B illustrates a schematic stereogram of the relationship among metal support bar, metal conducting bar and light bar according to another embodiment of the present disclosure.
Fig. 8 illustrates a light bulb device according to an embodiment of the present disclosure.

Detailed description of the preferred embodiments

Please refer to Fig.1 and Fig.2. FIG.1 illustrates a schematic stereogram of a lighting device according to an embodiment of the present disclosure. Fig. 2 illustrates another schematic stereogram of Fig.1 at another angle.
The first embodiment of the instant disclosure provides a lighting device, the lighting device includes a translucent shell100, a bottom base105, a lamp base104, a light bar module and a metal support bar1031,1032. The translucent shell100 may be fully translucent, or partially translucent. For example, the translucent shell100 may be made of a translucent material such as glass, plastic material, etc., and may be further atomized or patterned on the surface in whole or in part.
The bottom base105 connected with the translucent shell100 to form a receiving space together. For example, when the lighting device is a light bulb, the bottom base105 is a bulb head, and two conductive terminals are provided in side and bottom for connecting to an external power source. In another embodiment, a removable or rechargeable battery is provided in the inner space. If the external power supply is directly connected, a driving circuit may be provided for converting the general indoor power to a voltage suitable for driving the light emitted diode.
The lamp base104 set on said bottom base100, with a table-board, and said lamp basel04 is arranged in said receiving space. The light bar module is formed by connecting two or more light bars1011,1012,1013,1014 in series, said two or more light bars have two supporting points. For example, there is a support point between the light bars 1011 and 1012, another support point between the light bars 1013 and 1014. And said light bar module has two electrical connection points. Taking light emitted diode bulb as an example, a number of light emitted diode chips can be packaged in series into a light bar. And then the light bars can be further connected in series or in parallel. For a chip of a light emitted diode, a positive voltage terminal and a negative voltage terminal are required. They can be connected to the voltage supply point of the drive circuit to drive the chip of light emitted diode to emit light.
Two or more metal support bars1031,1032 extend upwardly from said table-board of said lamp base and connect to said one support point, respectively. The upward direction mentioned here refers to a variety of directions extending away from the lamp base and towards the translucent shell.
In addition, two metal conducting bars1021,1022 extend upwardly from the lamp basel04 and connect to two electrical connection points of the light bar module, respectively. Wherein said metal support bar1031,1032, said light bar 1011,1012,1013,1014 and said metal conducting bar1021,1022 form two substantial triangular frame structures. The triangular frame structure mentioned above does not need to be a geometrical triangle. As long as the whole structure similar to a triangle, substantially, all can belong to said substantial triangle frame structure. And, said metal support bar, said light bar and said metal conducting bar may respectively play a part or all sides of the triangular frame structure under different designs. Some available combination ways will be illustrated with some additional graphics as follows. In further designs, said substantial triangular frame structure is compose of polygons. The polygon includes three long sides, forming a triangular-like shape substantially. Needless to say, the present invention is not limited to these examples, as long as the combination ways can achieve a substantially similar effect, all should be considered to be within the scope of the present invention .
Hereinafter please refer to Fig.4A, 4B, 4C, 4D, 5A, 5B, 6A, 6B, 6C, 6D, 7A and 7B. FIG.4A illustrates a schematic diagram among metal support bar43, metal conducting bar42, light bar41 and lamp base44 according to an embodiment of the present disclosure. FIG.4B illustrates a schematic diagram among metal support bar43, metal conducting bar42, light bar41 and lamp base44 according to another embodiment of the present disclosure. FIG.4C illustrates a schematic diagram among metal support bar43, metal conducting bar42, light bar41 and lamp base44 according to another embodiment of the present disclosure. FIG.4D illustrates a schematic diagram among metal support bar43, metal conducting bar42, light bar41 and lamp base44 according to another embodiment of the present disclosure. FIG.4E illustrates a schematic diagram among metal support bar,43 metal conducting bar42, light bar41 and lamp base44 according to another embodiment of the present disclosure. From these figures we can see, the substantial triangular frame structure mentioned above does not need to be a strict geometrical triangle, even the side with a certain degree of curvature also can belong to said substantial triangle frame structure.
FIG.5A illustrates a schematic stereogram of the relationship among metal support bar53, metal conducting bar52, light bar51 and lamp base according to an embodiment of the present disclosure. FIG.5B illustrates a schematic stereogram of the relationship among metal support bar53, metal conducting bar52, light bar51 and lamp base according to another embodiment of the present disclosure. From the two figures we can see, the light bars may extend at different angles.
FIG.6A illustrates a schematic stereogram of the relationship among metal support bar63, metal conducting bar62 and light bar61 according to an embodiment of the present disclosure. FIG.6B illustrates a schematic stereogram of the relationship among metal support bar63, metal conducting bar62 and light bar61according to another embodiment of the present disclosure. FIG.6C illustrates a schematic stereogram of the relationship among metal support bar63, metal conducting bar62 and light bar61 according to another embodiment of the present disclosure. FIG.6D illustrates a schematic stereogram of the relationship among metal support bar63, metal conducting bar62 and light bar61 according to another embodiment of the present disclosure.
FIG.7A illustrates a schematic stereogram of the relationship among metal support bar73, metal conducting bar72 and light bar71 according to an embodiment of the present disclosure. FIG.7B illustrates a schematic stereogram of the relationship among metal support bar73, metal conducting bar72 and light bar71 according to another embodiment of the present disclosure.
In addition, Fig. 8 illustrates a light bulb device according to an embodiment of the present disclosure .
In a design, the lamp base also has a certain degree of transparency. For example, the lamp base may be made of glass. The translucent shell also could be made of glass. When both the lamp base and the translucent shell are made of glass, it is possible to carry out the blow molding of the glass by using a conventional bulb manufacturing process, and to perform various predetermined shapes such as bulb type, water drop type, candle type, flat-head type, or all kinds of predetermined shapes.
FIG. 3 illustrates an a light bar with a light emitted diode chip according to an embodiment of the present disclosure. A plurality of light emitted diode chips 312 are packaged in series by two translucent materials 310, 311, and have conductive terminals 321, 322 at both ends.
A pipe may be left in the blown manufacturing process, it can be used to fill the cooling gas. The method of operation in practice includes placing the lamp in a vacuum environment and then pouring various cooling gases. In some embodiments, when the power of the light emitted diode is small, the cooling gas may not be completely filled but maintain the proportion of air at, for example, 3% or more. It not only can produce a certain adjustment to the light emitting effect, but also reduce the manufacturing process's requirements and cost.
In some embodiments, said table-board of said lamp base substantially kept flat, no raised configuration. This does not mean that a certain flat is necessary, but no substantially apparent raised structure. The support of light bar is mainly achieved by the metal support bar.
In some embodiments, the height of said table-board of said lamp base is lower than the bottom position of said light bar in said light bar module.
In some embodiments, said metal support bar connects and supports said light bar module through a fastening structure at said support point. For example, there are a certain bending, buckles, springs, hooks, grooves or bumps at the support point of the metal support bar or light bar, therefor the complicated welding process can be omitted. Or even the welding process is needed, it can further enhance the stability of the structure.
In some embodiments, the appearance characteristics of said metal support bar are substantially same as said metal conducting bar.
In some embodiments, said metal support bar and said light bar module constitute an assembly unit and form a predetermined shape, and then mounted to said lamp base in the manner of said assembly unit. In this way, the complexity of assembling can be reduced to a certain extent.
In some embodiments, the rigidity of said metal conducting bar can maintain it at a fixed shape. According to the invention, said metal support bar has a groove paralleled to the direction of said metal support bar extending from said lamp base. For example, said metal support bar is elongated and folded at a certain angle along the direction of extension to achieve greater rigidity with less material. In some embodiments, said metal support bar is nickel plated.
Another embodiment of the instant disclosure provides a lighting device, comprising light bulb shell; light bulb module, composed by two or more light emitted diode light bars in series, said two or more series light bars have two support points; transparent lamp base, equipped with a table-board without substantially apparent raised structure, said transparent lamp base and said bulb shell formed a receiving space; and two or more support bars, extended upwardly from said transparent lamp base and connected said support points respectively. In some embodiments, wherein said support bar is made up of metallic material, and substantially kept linear extending.
The invention may be summarized as follows: A lighting device includes translucent shell, bottom base, lamp base, light bar module, two or more metal support bars and two metal conducting bars. Said bottom base connected with said translucent shell and formed a receiving space together. Said lamp base set on said bottom base and equipped with a table-board. Said light bar module is formed by connecting two or more light bars in series, between said two or more light bars, there are two supporting points, and said light bar module has two electrical connection points. Said metal support bars are connected to said one support point, respectively; Said metal conducting bars are connected to said two electrical connection points of said light bar module, respectively, wherein said metal support bar, said light bar and said metal conducting bar constituted a side component of two substantial triangular frame structures.
The scope of the invention is defined by the claims.

Claims

A lighting device, comprising:
a translucent shell (100);

a bottom base (105), connected with said translucent shell (100) to form a receiving space together;

a lamp base (104, 44), set on said bottom base(105), with a table-board, and said lamp base (104, 44) is arranged in said receiving space;

a light bar module, formed by connecting two or more light bars (1011, 1012, 1013, 1014, 41, 51, 61, 71) in series, between said two or more light bars (1011, 1012, 1013, 1014, 41, 51, 61, 71), there are two supporting points, and said light bar module has two electrical connection points;

two or more metal support bars (1031, 1032, 43, 53, 63, 73), extended upwardly from said table-board of said lamp base (104, 44), and connected to said one support point, respectively; and

two metal conducting bars (1021, 1022, 42, 52, 62, 72), extended upwardly from said lamp base (104, 44), and connected to said two electrical connection points of said light bar module, respectively, wherein said metal support bar (1031, 1032, 43, 53, 63, 73), said light bar (1011, 1012, 1013, 1014, 41, 51, 61, 71) and said metal conducting bar (1021, 1022, 42, 52, 62, 72) constituted a side component of two substantial triangular frame structures,

characterized in that:
said metal support bar (1031, 1032, 43, 53, 63, 73) has a groove paralleled to the direction of said metal support bar (1031, 1032, 43, 53, 63, 73) extending from said lamp base (104, 44).
The lighting device of claim 1, wherein said lamp base (104, 44) has a certain degree of transparency.
The lighting device of claim 1 and/or 2, wherein said lamp base (104, 44) is made of glass.
The lighting device of any one or more of claims 1 to 3, wherein said table-board of said lamp base (104, 44) substantially kept flat, no raised configuration.
The lighting device of any one or more of claims 1 to 4, wherein said substantial triangular frame structure is composed of polygon, and said polygon is a substantially triangular-like shape formed by three long sides.
The lighting device of any one or more of claims 1 to 5, wherein said translucent shell (100) is a bulb shell, said bottom base (105) is a bulb head, and said lamp head has two conductive terminals for connecting to an external power source.
The lighting device of any one or more of claims 1 to 6, wherein the height of said table-board of said lamp base (104, 44) is lower than the bottom position of said light bar (1011, 1012, 1013, 1014, 41, 51, 61, 71) in said light bar module.
The lighting device of any one or more of claims 1 to 7, further comprising a driving circuit, set in said bottom base (105), used for converting the external power source into electric power suitable for driving the light bar module to emit light.
The lighting device of any one or more of claims 1 to 8, wherein said receiving space provided for filling with cooling gas.
The lighting device of any one or more of claims 1 to 9, wherein said metal support bar (1031, 1032, 43, 53, 63, 73) connected and supported said light bar module through a fastening structure at said support point.
The lighting device of any one or more of claims 1 to 10, wherein the appearance characteristics of said metal support bar (1031, 1032, 43, 53, 63, 73) are substantially same as said metal conducting bar (1021, 1022, 42, 52, 62, 72).
The lighting device of any one or more of claims 1 to 11, wherein said metal support bar (1031, 1032, 43, 53, 63, 73) and said light bar module constituted an assembly unit and formed a predetermined shape, and then mounted to the translucent base in the manner of said assembly unit.
The lighting device of any one or more of claims 1 to 12, wherein said light bar (1011, 1012, 1013, 1014, 41, 51, 61, 71) of said light bar module including two or more light emitted diode chips, and is packaged with translucent material.
The lighting device of any one or more of claims 1 to 13, wherein said receiving space is filled with cooling gas and air, and the molecule proportion of the air is more than 3%.
The lighting device of any one or more of claims 1 to 14, wherein said metal conducting bar (1021, 1022, 42, 52, 62, 72) has a rigidity capable of maintaining it at a fixed shape.
The lighting device of any one or more of claims 1 to 15, wherein said metal support bar (1031, 1032, 43, 53, 63, 73) is nickel plated.