LED filament bulb

Abstract

To provide an LED filament bulb having a simple structure and improved production efficiency.SOLUTION: An LED filament bulb is provided in which each first light-emitting unit 501 included in light-emitting means 5 comprises: a plurality of LED filaments 51 spaced within a light-emitting space 40; an anode-side conductive plate 52 connected to anode ends of all the LED filaments 51 within the same first light-emitting unit 501; and a cathode-side conductive plate 53 connected to cathode ends of all the LED filaments 51. In a pair of the first light-emitting units 501, the anode-side conductive plate 52 of one of the first light-emitting units 501 and the cathode-side conductive plate 53 of the other of the first light-emitting units 501 are fixed to each other and electrically connected.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a lighting device, and more particularly to an LED filament bulb.

Background Art

[0002] As shown in FIG. 1, the LED filament bulb described in Patent Document 1 includes a base 11, a glass globe 12 connected to the base 11, a holding post 13 extending into the glass globe 12, a plurality of LED filaments 14 fixed around the holding post 13, and a power source 15 electrically connected to each LED filament 14. Such a conventional LED filament bulb is created by first inserting a holding post 13 holding each LED filament 14 connected to the power source 15 into the glass globe 12, and then filling the glass globe 12 with gas and closing the insertion opening.

[0003] Such a conventional LED filament bulb can enhance the heat dissipation effect of the LED filament bulb by filling the glass globe 12 with gas, but the structure is complex in that a holding post 13 for holding the LED filament 14 is required, and simplification is also required for the manufacturing process of filling the glass globe 12 with gas and then closing it.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, an object of the present invention is to provide an LED filament bulb with a simple structure, a simplified manufacturing process, and improved production efficiency.

Means for Solving the Problems

[0006] To achieve the above object, the present invention includes a base having a first electrode and a second electrode and formed in a shape surrounding a housing chamber having a first opening, a control module disposed on the base and electrically connected to the first electrode and the second electrode and having a circuit board to which two connection terminals are electrically connected, a globe formed so as to surround a light-emitting space filled with air and disposed on the base so as to have a second opening communicating with the light-emitting space and facing the first opening of the base, a light-emitting means electrically connected to the control module and having at least one pair of first light-emitting units extending into the light-emitting space from the control module, a first insulating heat-dissipating grease disposed between the globe and the base, filling at least a part of the first opening and the second opening, and covering at least a part of the control module. The LED filament bulb is provided, each of the first light-emitting units includes a plurality of LED filaments arranged in the light-emitting space with a gap therebetween, an anode-side conductive plate connected to the anode ends of all the LED filaments in the same first light-emitting unit, and a cathode-side conductive plate connected to the cathode ends of all the LED filaments, Furthermore, in at least one pair of the first light-emitting units included in the light-emitting means, the anode-side conductive plate included in one of the first light-emitting units and the cathode-side conductive plate included in another one of the first light-emitting units are fixed to each other and electrically connected, and the cathode-side conductive plate is electrically connected to one of the two connection terminals, and the anode-side conductive plate included in the other one of the first light-emitting units is electrically connected to the other one of the two connection terminals. An LED filament bulb is provided.

[0007] Another object of the present invention is to provide an LED filament bulb with a simple structure, a simplified manufacturing process, improved production efficiency, and high brightness.

[0008] That is, the present invention has a base formed in a shape surrounding a housing chamber having a first electrode, a second electrode, and a first opening, a control module disposed on the base and electrically connected to the first electrode and the second electrode, and having a circuit board to which two connection terminals are electrically connected, a globe disposed on the base so as to surround a light-emitting space filled with air, having a second opening communicating with the light-emitting space and facing the first opening of the base, a light-emitting means electrically connected to the control module and having at least one pair of first light-emitting units extending into the light-emitting space along a predetermined longitudinal direction from the control module and a second light-emitting unit located above the pair of first light-emitting units in the longitudinal direction, a first insulating heat-dissipating grease disposed between the globe and the base, filling at least a part of the first opening and the second opening, and covering at least a part of the control module, and an LED filament bulb comprising the same, each of the first light-emitting units has a plurality of LED filaments arranged in the light-emitting space with a space therebetween, an anode-side conductive plate connected to anode ends of all the LED filaments in the same first light-emitting unit, and a cathode-side conductive plate connected to cathode ends of all the LED filaments, Furthermore, in at least one pair of the first light-emitting units included in the light-emitting means, the anode-side conductive plate of one of the first light-emitting units is fixed to and electrically connected to the cathode end of the second light-emitting unit, and the cathode-side conductive plate is electrically connected to one of the two connection terminals, The anode-side conductive plate of the other one of the first light-emitting units is electrically connected to the other one of the two connection terminals, and the cathode-side conductive plate is fixed to and electrically connected to the anode end of the second light-emitting unit, and an LED filament bulb is also provided.

Advantages of the Invention

[0009] In the present invention, the anode-side conductive plate of one first light-emitting unit and the cathode-side conductive plate of another first light-emitting unit are fixed to each other and electrically connected, or the anode end and the cathode end of the second light-emitting unit are fixed to and electrically connected to the cathode-side conductive plate and the anode-side conductive plate of each of the two first light-emitting units. With such a configuration, it is possible to sufficiently hold the first light-emitting unit without installing a holding post for holding the first light-emitting unit. Further, in the present invention, since heat generated when the light-emitting means emits light can be released via the first insulating heat-dissipating grease and the base, it is not necessary to fill a specific gas with a high thermal conductivity that enhances the heat dissipation effect in the globe.

[0010] Therefore, in the present invention, since no holding post is installed, the structure is simple, and since no specific gas with a high thermal conductivity that enhances the heat dissipation effect is filled, the manufacturing process is also simplified and the production efficiency is improved.

Brief Description of the Drawings

[0011] [Figure 1] It is an exploded perspective view showing the configuration of an LED filament bulb described in Patent Document 1. [Figure 2] It is a perspective view showing the configuration of a first embodiment of the LED filament bulb of the present invention. [Figure 3] It is an exploded perspective view of the same first embodiment. [Figure 4] It is a cross-sectional view of the same first embodiment. [Figure 5] It is an exploded perspective view showing the configuration of a control module and a light-emitting means in the same first embodiment. [Figure 6] It is a cross-sectional view showing the configuration of the second embodiment of the present invention. [Figure 7] It is an exploded perspective view showing the configuration of the control module and the light emitting means in the second embodiment. [Figure 8] It is a cross-sectional view showing the configuration of the third embodiment of the present invention. [Figure 9] It is an exploded perspective view showing the configuration of the control module and the light emitting means in the third embodiment. [Figure 10] It is a cross-sectional view showing the configuration of the fourth embodiment of the present invention. [Figure 11] It is an exploded perspective view showing the configuration of the control module and the light emitting means in the fourth embodiment. [Figure 12] It is a partial cross-sectional view showing the configuration of the fifth embodiment of the present invention. [Figure 13] It is a cross-sectional view showing the configuration of the sixth embodiment of the present invention. [Figure 14] It is an exploded perspective view showing the configuration of the control module and the light emitting means in the sixth embodiment.

Mode for Carrying Out the Invention

[0012] The following will describe each embodiment of the present invention in detail with reference to the drawings. However, it should be understood that in different embodiments, even if the structures of components that play equivalent roles are not exactly the same, they may be given the same reference numerals. Also, in the following description, terms such as "upper" and "lower" are used with reference to the drawings, but these are used for the convenience of explanation for easy understanding and do not limit the implementation method or the scope of rights of the present invention.

[0013] The configuration of the first embodiment of the LED filament bulb of the present invention is shown in FIGS. 2 to 5. As shown in the drawings, the LED filament bulb of this first embodiment includes a base 2, a control module 3, a globe 4, a light emitting means 5, a first insulating heat dissipation grease 61, and a second insulating heat dissipation grease 62.

[0014] As shown in FIGS. 2 and 3, the base 2 has a first electrode 22 and a second electrode 23, and is formed in a shape surrounding a housing chamber 20 having a first opening 21. That is, the base 2 formed in a substantially dish shape surrounding the housing chamber 20 so as to have a bottom portion and a peripheral wall portion made of a metal material has a configuration in which a portion protruding downward in FIG. 2 from the bottom portion corresponds to the first electrode 22, and the peripheral wall portion corresponds to the second electrode 23.

[0015] As shown in FIGS. 3 and 4, the control module 3 has a circuit board 31 disposed on the base 2 so as to be electrically connected to the first electrode 22 and the second electrode 23, and two connection terminals 322 are electrically connected to the circuit board 31.

[0016] Furthermore, as shown in the figure, in this first embodiment, the substrate body 311 of the circuit board 31 is electrically connected to the first electrode 22 via an electronic component 33, and is electrically connected to the second electrode 23 by being fixed inside the base 2 with solder. Examples of the electronic component 33 include a resistor, a metal lead, or a circuit board. Also, in this embodiment, the control module 3 further has a connection board 32 electrically connected to the circuit board 31. Both of the two connection terminals 322 are conductive clips formed on the connection board 32, and the connection board 32 is connected to the substrate body 311 by a connection member 312 interposed between the substrate body 311 and the connection board 32 through an insertion hole 321 formed so as to be electrically connected to the two connection terminals 322. The connection member 312 has two columnar terminals 313 that are electrically connected to the two connection terminals 322 by being inserted into the two insertion holes 321, respectively. In some modified embodiments, the control module 3 can also be configured to be disposed at a position higher than the base 2 (closer to the glove 4 side) in the vertical direction Z shown in FIG. 3. The connection terminal 322 can also be configured as a metal pad made of, for example, a copper or silver material.

[0017] As shown in FIGS. 2 to 4, in this first embodiment, the globe 4 is made of a glass material and is formed to surround a light-emitting space 40 filled with air. Specifically, the globe 4 includes a globe lower part 41 formed in a substantially annular shape, a globe main body part 42 formed in a spindle-shaped globe so as to extend upward in the vertical direction Z from the outer peripheral edge of the globe lower part 41, and a substantially tubular shape extending downward in the vertical direction Z from the inner peripheral edge of the globe lower part 41. And an opening protrusion 43 surrounding a second opening 431 that communicates with the light-emitting space 40 and faces the first opening 21 of the base 2. The opening protrusion 43 extends into the accommodation chamber 20 of the base 2 via the first opening 21, and the globe lower part 41 abuts against the peripheral edge surrounding the first opening 21 of the base 2. Further, in this embodiment, the opening protrusion 43 of the globe 4 is configured to be inserted into the first opening 21 of the base 2. However, as the present invention, it is also possible to adopt a configuration in which the base 2 is inserted into the opening of the globe 4. Further, the globe 4 can also be configured to have an opening formed on the opposite side of the base 2.

[0018] As shown in FIGS. 2, 4, and 5, in this embodiment, the light-emitting means 5 is electrically connected to the control module 3 and has at least one pair of first light-emitting units 501 extending into the light-emitting space 40 from the control module 3.

[0019] Each first light-emitting unit 501 includes a plurality (two in this embodiment) of LED filaments 51 that all extend along a direction substantially coinciding with the vertical direction Z and are arranged in the light-emitting space 40 with a space therebetween, and all LED filaments 51 in the same first light-emitting unit 501. An anode-side conductive plate 52 connected to the anode ends 512, and a cathode-side conductive plate 53 connected to the cathode ends 513 of all the LED filaments 51.

[0020] And in at least one pair of first light-emitting units 501 included in the light-emitting means 5, the anode-side conductive plate 52 included in one first light-emitting unit 501 is bent and fixed to overlap with the cathode-side conductive plate 53 included in the other first light-emitting unit 501 so as to be electrically connected. The cathode-side conductive plate 53 is electrically connected to one of the two connection terminals 322, and the anode-side conductive plate 52 included in the other first light-emitting unit 501 is electrically connected to the other of the two connection terminals 322.

[0021] Also, a plurality of connection holes 521 that are spaced apart in the lateral direction L that is substantially orthogonal to the longitudinal direction Z are formed in the anode-side conductive plate 52 in each first light-emitting unit 501, and a plurality of connection holes 531 that are spaced apart in the lateral direction L are also formed in the cathode-side conductive plate 53. The LED filament 51 in each first light-emitting unit 501 is obtained by cutting out a required number from a row of created LED filaments. And Each LED filament 51 has a light-emitting portion 511 that is connected between an anode end 512 and a cathode end 513 and is used for light emission. The anode-side conductive plate 52 and the anode end 512 are made of the same metal material, and the cathode-side conductive plate 53 and the cathode end 513 are made of the same metal material. In some modified embodiments, it is also possible to adopt a configuration in which the anode-side conductive plate 52 and the cathode-side conductive plate 53 are metal members formed independently of the LED filament 51 and are attached to the anode end 512 or the cathode end 513 of the LED filament 51 by soldering.

[0022] In this first embodiment, the anode-side conductive plate 52 of one first light-emitting unit 501 in the pair of first light-emitting units 501 included in the light-emitting means 5 overlaps the cathode-side conductive plate 53 of the other first light-emitting unit 501 and is fixed by soldering. For this reason, this pair of first light-emitting units 501 is configured to be connected to the two connection terminals 322 of the control module 3 by series connection.

[0023] Also, in some embodiments, it is also possible to adopt a configuration in which a plurality of pairs of first light-emitting units 501 are arranged, or a configuration in which two or more LED filaments 51 connected in series along the longitudinal direction Z are arranged in one first light-emitting unit 501.

[0024] In the present invention, the anode-side conductive plate of one first light-emitting unit and the cathode-side conductive plate of another first light-emitting unit are fixed to each other and electrically connected. Thus, even without having a holding post to hold the first light-emitting unit, it is possible to sufficiently hold the first light-emitting unit. Therefore, it is possible to provide an LED filament bulb having a simpler structure than the prior art.

[0025] In some modified embodiments, it is also possible to adopt a configuration in which the connection plate 32 is omitted from the control module 3 in the configuration of this first embodiment, and two connection terminals 322 for electrically connecting to the light-emitting means 5 are arranged as hole-shaped terminals on the substrate body 311 of the circuit board 31. In this case, each first light-emitting unit 501 is connected to the substrate body 311, and the same effect as that of the first embodiment can be expected.

[0026] Also, in this first embodiment, the first insulating heat-dissipating grease 61 is arranged between the glove 4 and the base 2, filled in at least a part of the first opening 21 and the second opening 431, and covers at least a part of the control module 3. Also, in some modified embodiments, it is also possible to adopt a configuration in which the first insulating heat-dissipating grease 61 is applied / filled to cover the first opening 21 and the second opening 431, thereby covering the entire control module 3.

[0027] Furthermore, in some modified embodiments, it is also possible to adopt a configuration in which only a part of the control module 3 is covered by partially filling the first insulating heat-dissipating grease 61 in the first opening 21 and the second opening 431.

[0028] In the present invention, by disposing the first insulating and heat-dissipating grease 61 between the glove 4 and the base 2 and filling at least a part of the first opening 21 and the second opening 431, the first insulating and heat-dissipating grease 61 also functions as an adhesive, enabling the glove 4 to be fixed to the base 2. Therefore, there is no need to separately prepare other fixing means such as adhesives or engaging structures for fixing the glove 4 to the base 2.

[0029] In this first embodiment, the second insulating and heat-dissipating grease 62 is disposed in the accommodation chamber 20 surrounded by the base 2. In some modified embodiments, it is also possible to adopt a configuration in which the accommodation chamber 20 is filled with the second insulating and heat-dissipating grease 62. Further, a configuration in which the second insulating and heat-dissipating grease 62 is applied only to cover the lower surface of the control module 3 is also possible. Regarding the specific configurations of the first insulating and heat-dissipating grease 61 and the second insulating and heat-dissipating grease 62, they can be selected from materials having an appropriate thermal conductivity as required.

[0030] When the base 2 is connected to the power supply, each first light-emitting unit 501 emits light and generates heat. Most of this heat is conducted and released to the base 2 and the glove 4 via the anode-side conductive plate 52, the cathode-side conductive plate 53, the first insulating and heat-dissipating grease 61, and the second insulating and heat-dissipating grease 62. And a small part of the heat is released by heat radiation. Since the base 2 is made of a metal material, it has the advantage of high heat dissipation efficiency.

[0031] Thus, since the heat generated when each first light-emitting unit 501 emits light is mainly released via the first insulating and heat-dissipating grease 61 and the base 2, it is not necessary to fill the glove 4 with a specific gas having a high thermal conductivity to enhance the heat dissipation effect. Therefore, the manufacturing process is simplified and the production efficiency is improved.

[0032] The second embodiment of the present invention is shown in FIGS. 6 and 7. This second embodiment is different from the first embodiment in that each of the pair of first light-emitting units 501 has three LED filaments 51, and an explosion-proof layer 44 is applied to the inner surface of the glove 4. By adding more LED filaments 51, it has higher brightness. And when the glove 4 is dropped to the ground or the like due to an accident and the glove 4 is damaged, the explosion-proof layer 44 can avoid the situation where the glass material constituting the glove 4 scatters, so it has higher safety.

[0033] The third embodiment of the present invention is shown in FIGS. 8 and 9. In this third embodiment, the anode-side conductive plate 52 and the cathode-side conductive plate 53 that are fixed to each other and electrically connected are different from the second embodiment in that they are connected adjacent to each other without overlapping. That is, in this third embodiment, instead of the procedure of bending and overlapping the anode-side conductive plate 52 and the cathode-side conductive plate 53 that are fixed to each other and electrically connected, they are connected by means such as soldering while being adjacent to each other. Therefore, the situation where the anode-side conductive plate 52 or the cathode-side conductive plate 53 is damaged when being bent can be avoided. Incidentally, in this third embodiment, the anode-side conductive plate 52 and the cathode-side conductive plate 53 that are fixed to each other and electrically connected are cut out the peripheral portions of the connection holes 521 and 531 so as to be easily soldered, and are formed into a rod shape that extends substantially in the lateral direction L, and then connected by means such as soldering.

[0034] The fourth embodiment of the present invention is shown in FIGS. 10 and 11. This fourth embodiment is different from the first embodiment in that the light-emitting means 5 has two pairs of first light-emitting units 501, and the control module 3 has four connection terminals 322 that are electrically connected to each of the first light-emitting units 501 in the two pairs of first light-emitting units 501.

[0035] That is, by arranging one first light-emitting unit 501 on each of the four sides of a quadrilateral to have a total of four pairs of first light-emitting units 501, an LED filament bulb with higher luminance can be provided. Further, in this fourth embodiment, similar to the second embodiment, an explosion-proof layer 44 is provided on the inner surface of the globe 4.

[0036] The fifth embodiment of the present invention is shown in FIG. 12. This fifth embodiment is different from the first embodiment in that the first electrode 22 and the second electrode 23 in the base 2 are formed in a pin shape extending downward along the vertical direction Z by a metal material (so-called G9 base), a circuit board arranged along the vertical direction Z is used as the electronic component 33 interposed between the circuit board 31 and the base 2, the shape of the globe 4 is different, and the extending direction of the anode-side conductive plate 52 or the cathode-side conductive plate 53 below the LED filament 51 does not coincide with the LED filament 51. However, the same effects as those of the first embodiment can be expected.

[0037] The sixth embodiment of the present invention is shown in FIGS. 13 and 14. As shown in the figure, this sixth embodiment is different from the first embodiment in that the light-emitting means 5 further has a second light-emitting unit 502, and a pair of first light-emitting units 501 are connected via the second light-emitting unit 502 because of having the second light-emitting unit 502.

[0038] That is, in this sixth embodiment, the second light-emitting unit 502 is located above a pair of first light-emitting units 501 in the vertical direction Z. In the pair of first light-emitting units 501, the anode-side conductive plate 52 of one first light-emitting unit 501 is fixed to and electrically connected to the cathode end 5021 of the second light-emitting unit 502, and the cathode-side conductive plate 53 is electrically connected to one of the two connection terminals 322. The anode-side conductive plate 52 of the other first light-emitting unit 501 is electrically connected to the other of the two connection terminals 322, and the cathode-side conductive plate 53 is fixed to and electrically connected to the anode end 5022 of the second light-emitting unit 502.

[0039] In this embodiment, as the second light-emitting unit 502, an SMD (Surface Mount Device) or COB (Chip on Board) type LED can be used. By providing the second light-emitting unit 502 that emits light upward in the vertical direction Z in the figure, the luminance of the LED filament bulb of this embodiment can be increased.

[0040] In this sixth embodiment, since the anode-side conductive plate 52 of one first light-emitting unit 501 and the cathode-side conductive plate 53 of another first light-emitting unit 501 are respectively fixed to the cathode end 5021 and the anode end 5022 of the second light-emitting unit 502 and come into contact with each other for electrical connection, the sixth embodiment, like the first embodiment, can hold and fix a pair of first light-emitting units 501 without installing a holding post. Moreover, by adding the second light-emitting unit 502, an LED filament bulb with higher luminance can be provided.

[0041] In summary, for the LED filament bulb provided by the present invention, the configuration in which the anode-side conductive plate of one first light-emitting unit and the cathode-side conductive plate of another first light-emitting unit are fixed to each other for electrical connection, or the configuration in which the anode end and the cathode end of the second light-emitting unit are fixed to the cathode-side conductive plate and the anode-side conductive plate of each of the two first light-emitting units for electrical connection, enables the first light-emitting unit to be sufficiently held without a holding post for holding the first light-emitting unit. Further, since the present invention can release the heat generated when the light-emitting means emits light via the first insulating heat-dissipating grease and the base, there is no need to fill the globe with a specific gas having a high thermal conductivity to enhance the heat dissipation effect.

[0042] Therefore, the present invention does not require the installation of holding columns, resulting in a simple structure. Also, since it does not fill a specific gas with high thermal conductivity to enhance the heat dissipation effect, the manufacturing process is simplified, improving production efficiency, and an LED filament bulb can be provided, enabling the object of the present invention to be surely achieved.

[0043] As described above, the embodiments of the present invention have been explained. However, the present invention is not limited thereto, and various modifications are possible without departing from the gist thereof. The invention described in the original claims of the present application is appended below. [Appendix 1] A base having a first electrode and a second electrode and formed in a shape surrounding a housing chamber having a first opening, A control module disposed on the base and electrically connected to the first electrode and the second electrode and having a circuit board to which two connection terminals are electrically connected, A globe formed so as to surround a light-emitting space filled with air and disposed on the base so as to have a second opening communicating with the light-emitting space and facing the first opening of the base, Light-emitting means electrically connected to the control module and having at least one pair of first light-emitting units extending into the light-emitting space from the control module, An LED filament bulb comprising a first insulating heat-dissipating grease disposed between the globe and the base, filled in at least a part of the first opening and the second opening, and covering at least a part of the control module, Each of the first light-emitting units includes a plurality of LED filaments arranged in the light-emitting space with spaces therebetween, an anode-side conductive plate connected to the anode ends of all the LED filaments in the same first light-emitting unit, and a cathode-side conductive plate connected to the cathode ends of all the LED filaments, Furthermore, in at least one pair of the first light-emitting units of the light-emitting means, the anode-side conductive plate of one of the first light-emitting units and the cathode-side conductive plate of the other first light-emitting unit are fixed to each other and electrically connected, and the cathode-side conductive plate is electrically connected to one of the two connection terminals, and the anode-side conductive plate of the other first light-emitting unit is electrically connected to the other of the two connection terminals. LED filament bulb. [Appendix 2] The LED filament bulb according to Appendix 1, further comprising a second insulating heat-dissipating grease filled in the housing chamber surrounded by the base. [Appendix 3] The LED filament bulb according to appended note 1, wherein the anode-side conductive plate and the cathode-side conductive plate, which are fixed to each other and electrically connected, are connected so as to overlap each other. [Appended note 4] The LED filament bulb according to appended note 1, wherein the anode-side conductive plate and the cathode-side conductive plate, which are fixed to each other and electrically connected, are connected so as to be adjacent to each other without overlapping. [Appended note 5] The LED filament bulb according to appended note 1, wherein the control module further has a connection plate electrically connected to the circuit board, and each of the connection terminals is disposed on the connection plate. [Appended note 6] The LED filament bulb according to appended note 5, wherein the circuit board has a substrate body and a connection member connected so as to be interposed between the substrate body and the connection plate, and the connection member has two columnar terminals electrically connected to each of the connection terminals. [Appended note 7] The LED filament bulb according to appended note 1, wherein an explosion-proof layer is applied to the inner surface of the globe. [Appended note 8] The LED filament bulb according to appended note 1, wherein the light-emitting means has two pairs of the first light-emitting units, and the control module has four connection terminals electrically connected to each of the first light-emitting units in the two pairs of the first light-emitting units. [Appended note 9] Each of the LED filaments has a light-emitting portion connected between the anode end and the cathode end and used for light emission. The LED filament bulb according to appended note 1, wherein the anode-side conductive plate and the anode end are made of the same metal material, and the cathode-side conductive plate and the cathode end are made of the same metal material. [Appended note 10] The globe has a lower globe portion formed in a substantially annular shape, a globe main body portion formed in a globe shape so as to extend vertically upward from the outer peripheral edge of the lower globe portion, and an opening protrusion portion extending in a substantially tubular shape so as to extend vertically downward from the inner peripheral edge of the lower globe portion and surrounding the second opening. The LED filament bulb according to appended note 1, wherein the opening protrusion portion extends into the accommodation chamber of the base via the first opening, and the lower globe portion abuts against the peripheral edge surrounding the first opening of the base. [Appended note 11] The LED filament bulb according to appended note 1, wherein the first electrode and the second electrode are formed in a pin shape from a metal material. [Appended note 12] A base having a first electrode and a second electrode and formed in a shape surrounding a housing chamber having a first opening. A control module disposed on the base and having a circuit board electrically connected to the first electrode and the second electrode and having two connection terminals electrically connected. A globe formed so as to surround a light-emitting space filled with air and disposed on the base so as to have a second opening communicating with the light-emitting space and facing the first opening of the base. Light-emitting means electrically connected to the control module and having at least one pair of first light-emitting units extending into the light-emitting space along a predetermined longitudinal direction and a second light-emitting unit located above the pair of first light-emitting units in the longitudinal direction. An LED filament bulb comprising a first insulating heat-dissipating grease disposed between the globe and the base, filled in at least a part of the first opening and the second opening, and covering at least a part of the control module. Each of the first light-emitting units includes a plurality of LED filaments arranged in the light-emitting space with spaces therebetween, an anode-side conductive plate connected to anode ends of all the LED filaments in the same first light-emitting unit, and a cathode-side conductive plate connected to cathode ends of all the LED filaments. Furthermore, in at least one pair of the first light-emitting units included in the light-emitting means, the anode-side conductive plate of one of the first light-emitting units is fixed to and electrically connected to the cathode end of the second light-emitting unit, and the cathode-side conductive plate is electrically connected to one of the two connection terminals. The anode-side conductive plate of the other one of the first light-emitting units is electrically connected to the other one of the two connection terminals, and the cathode-side conductive plate is fixed to and electrically connected to the anode end of the second light-emitting unit. An LED filament bulb.

Explanation of Symbols

[0044] 2 Nozzles 20 Storage Chamber 21 First Opening 22 First Electrode 23 Second Electrode 3 Control Module 31 Circuit Board 311 Board Body 312 Connection Member 313 Columnar Terminal 32 Connection Plate 321 Insertion Hole 322 Connection Terminal 33 Electronic Component 4 Glove 40 Light Emitting Space 41 Lower Part of Glove 42 Glove Body Part 43 Opening Projection 431 Second Opening 44 Explosion Prevention Layer 5 Light Emitting Means 501 First Light Emitting Unit 502 Second Light Emitting Unit 51 LED Filament 511 Light Emitting Part 512 Anode End 513 Cathode End 52 Anode-side conductive plate 521 Connection hole 53 Cathode-side conductive plate 531 Connection hole 61 First insulating and heat-dissipating grease 62 Second insulating and heat-dissipating grease Z Vertical direction L Horizontal direction

Claims

1. a base having a first electrode and a second electrode and formed in a shape surrounding a storage chamber having a first opening; a control module disposed on the base and electrically connected to the first electrode and the second electrode, the control module having a circuit board to which two connection terminals are electrically connected; a globe that is formed to surround a light-emitting space filled with air and that is disposed on the base so as to have a second opening that communicates with the light-emitting space and faces the first opening of the base; a light-emitting means electrically connected to the control module and having at least one pair of first light-emitting units extending from the control module into the light-emitting space; a first insulating and thermal grease disposed between the globe and the base, filling at least a portion of the first opening and the second opening, and covering at least a portion of the control module; Each of the first light-emitting units includes a plurality of LED filaments arranged in the light-emitting space with spaces therebetween, an anode-side conductive plate connected to anode ends of all of the LED filaments in the same first light-emitting unit, and a cathode-side conductive plate connected to cathode ends of all of the LED filaments; Furthermore, in at least one pair of the first light-emitting units of the light-emitting means, the anode side conductive plate of one of the first light-emitting units and the cathode side conductive plate of the other of the first light-emitting units are fixed to each other and electrically connected, the cathode side conductive plate of the one of the first light-emitting units is electrically connected to one of the two connection terminals, and the anode side conductive plate of the other of the first light-emitting units is electrically connected to the other of the two connection terminals; the first insulating heat dissipation grease covers at least a portion of each of the cathode side conductive plate of the one of the first light-emitting units connected to the two connection terminals and the anode side conductive plate of the other one of the first light-emitting units connected to the two connection terminals, respectively.

2. 2. The LED filament bulb according to claim 1, further comprising a second insulating heat dissipating grease filled in the chamber surrounded by the base.

3. 2. The LED filament bulb according to claim 1, wherein the anode side conductive plate and the cathode side conductive plate which are fixed and electrically connected to each other are connected to overlap each other.

4. 2. The LED filament bulb according to claim 1, wherein the anode side conductive plate and the cathode side conductive plate which are fixed and electrically connected to each other are connected to be adjacent to each other without overlapping.

5. 2. The LED filament bulb according to claim 1, wherein the control module further comprises a connection plate electrically connected to the circuit board, and each of the connection terminals is disposed on the connection plate.

6. 6. The LED filament bulb according to claim 5, wherein the circuit board has a board body and a connection member connected to be interposed between the board body and the connection plate, the connection member having two columnar terminals electrically connected to each of the connection terminals.

7. The LED filament bulb according to claim 1 , wherein an explosion-proof layer is applied to the inner surface of the globe.

8. 2. The LED filament bulb according to claim 1, wherein the light emitting means has two pairs of the first light emitting units, and the control module has four connection terminals electrically connected to each of the first light emitting units in the two pairs of the first light emitting units.

9. Each of the LED filaments has a light emitting portion connected between the anode end and the cathode end and used for emitting light; 2. The LED filament bulb according to claim 1, wherein the anode side conductive plate and the anode end are made of the same metal material, and the cathode side conductive plate and the cathode end are made of the same metal material.

10. The globe includes a globe lower portion formed in a substantially annular shape, A glove body portion formed in a glove shape so as to extend vertically upward from the outer peripheral edge of the glove lower portion; an opening protrusion extending in a generally tubular shape from an inner peripheral edge of the globe lower portion so as to extend downward in the vertical direction and surrounding the second opening; 2. The LED filament bulb according to claim 1, wherein the opening protrusion extends into the housing chamber of the base through the first opening, and the globe lower portion abuts against a peripheral edge surrounding the first opening of the base.

11. 2. The LED filament bulb according to claim 1, wherein the first electrode and the second electrode are made of a metal material and formed into a pin shape.

12. a base having a first electrode and a second electrode and formed in a shape surrounding a storage chamber having a first opening; a control module disposed on the base and electrically connected to the first electrode and the second electrode, the control module having a circuit board to which two connection terminals are electrically connected; The air-filled light-emitting space is surrounded by the air-filled light-emitting space. The air-filled light-emitting space is connected to the air-filled light-emitting space. a globe disposed on the base so as to have a second opening facing the first opening of the base; A light-emitting means electrically connected to the control module and having at least one pair of first light-emitting units extending from the control module along a predetermined vertical direction into the light-emitting space, and a second light-emitting unit located above the pair of first light-emitting units in the vertical direction; a first insulating and thermal grease disposed between the globe and the base, filling at least a portion of the first opening and the second opening, and covering at least a portion of the control module; Each of the first light-emitting units includes a plurality of LED filaments arranged in the light-emitting space with spaces therebetween, an anode-side conductive plate connected to anode ends of all of the LED filaments in the same first light-emitting unit, and a cathode-side conductive plate connected to cathode ends of all of the LED filaments; Furthermore, in at least one pair of the first light-emitting units of the light-emitting means, the anode side conductive plate of one of the first light-emitting units is fixed to and electrically connected to the cathode end of the second light-emitting unit, and the cathode side conductive plate is electrically connected to one of the two connection terminals; The anode side conductive plate of the other one of the first light-emitting units is electrically connected to the other one of the two connection terminals, and the cathode side conductive plate is fixed to and electrically connected to the anode end of the second light-emitting unit; the first insulating heat dissipation grease covers at least a portion of each of the cathode side conductive plate of the one of the first light-emitting units connected to the two connection terminals and the anode side conductive plate of the other one of the first light-emitting units connected to the two connection terminals, respectively.

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