LED bulb
By employing a cage-like structure combining multiple short, thin LED strips with metal strips in the LED bulb, the problem of high production costs was solved, resulting in high-lumen and high-power LED bulbs, reducing assembly difficulty and extending service life.
Patent Information
- Application Number
- CN202520331397.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-02-27
AI Technical Summary
The production cost of existing LED bulbs is relatively high, mainly because LED strips are connected to the lamp post components by winding or arraying, resulting in a complex and expensive manufacturing process.
It adopts a cage-like structure that combines multiple short and thin LED light strips with metal strips. LED filament groups are set between adjacent metal strips and connected in parallel or series, which simplifies the assembly process and reduces material costs.
While meeting the requirements for high lumens and high power, it reduces production costs, extends the lifespan of LED bulbs, and enhances market competitiveness.
Smart Images
Figure CN223882186U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of lighting devices, and particularly relates to an LED bulb. BACKGROUND
[0002] With the gradual popularization of the green life concept of energy saving and environmental protection, people gradually use LED bulbs to replace traditional tungsten filament bulbs, and the LED bulbs have higher luminosity and better lighting comfort.
[0003] In the related art LED bulb, the LED light bar is connected to the lamp post member in a winding manner, or the LED light bar is arranged in an array around the lamp post member in a circumferential direction and is directly connected to the lamp post member. The tungsten filament is replaced by the LED light bar, so that the LED bulb is formed.
[0004] However, due to the high lumen and high power requirements of the lighting site for the LED bulb, and due to the current manufacturing process, the LED light bar connected to the lamp post member in a winding manner or connected to the lamp post member in an array arrangement around the lamp post member in a circumferential direction in the related art is very expensive, resulting in a high production cost of the LED bulb in the related art. CONTENT OF THE INVENTION
[0005] The application aims to provide an LED bulb, and aims to solve the problem of high production cost of the LED bulb in the related art.
[0006] To achieve the above-mentioned purpose, the technical solution adopted by the application is as follows: an LED bulb comprising:
[0007] a lamp cap;
[0008] a bulb shell having an open end, the open end being connected to the lamp cap;
[0009] a lamp post member installed on the lamp cap and extending into the bulb shell, the lamp post member being electrically connected to the lamp cap;
[0010] an LED structure connected to the lamp post member, the LED structure being electrically connected to the lamp post member;
[0011] The LED structure is a cage-shaped structure comprising a plurality of metal strips and at least two groups of LED filament groups. The plurality of metal strips are arranged at intervals along the extension direction of the lamp post member. Each of the plurality of metal strips is individually closed looped around the lamp post member. One LED filament group is arranged in series between adjacent two metal strips. The LED filament group comprises a plurality of LED light bars arranged in parallel. In each group of LED filament groups, adjacent two LED light bars are arranged at intervals.
[0012] In some embodiments of the present application, the LED structure comprises two groups of LED filament groups, the lamp post member comprises a positive electrode lamp post and a negative electrode lamp post; the metal strips at both ends of the LED structure are electrically connected to one of the positive electrode lamp post and the negative electrode lamp post, and the metal strips in the middle of the LED structure are electrically connected to the other of the positive electrode lamp post and the negative electrode lamp post, so that the two groups of LED filament groups are arranged in parallel; or, the metal strips at both ends of the LED structure are respectively electrically connected to the positive electrode lamp post and the negative electrode lamp post, so that the two groups of LED filament groups are arranged in series.
[0013] In some embodiments of the present application, the LED structure comprises n groups of LED filament groups, where n is an integer and n≥3, the lamp post member comprises a positive electrode lamp post and a negative electrode lamp post; a plurality of metal strips are alternately and sequentially electrically connected to the positive electrode lamp post and the negative electrode lamp post, so that two adjacent LED filament groups are arranged in parallel; or, the metal strips at both ends of the LED structure are respectively electrically connected to the positive electrode lamp post and the negative electrode lamp post, so that all the LED filament groups are arranged in series; or, m groups of adjacent LED filament groups are arranged in series as a light source group, where m is an integer and m≥2, n is an integer multiple of m and n≥2m, and any two light source groups are electrically connected in parallel to the positive electrode lamp post and the negative electrode lamp post.
[0014] In some embodiments of the present application, the LED structure further comprises a plurality of adapter supports, and the positive electrode lamp post and the negative electrode lamp post are connected with the adapter supports, and the metal strips electrically connected to the positive electrode lamp post or the negative electrode lamp post are electrically connected to the corresponding adapter supports.
[0015] In some embodiments of the present application, the LED bulb further comprises a support member made of insulating material, and the positive electrode lamp post and / or the negative electrode lamp post is connected with the support member, and the metal strips not electrically connected to the positive electrode lamp post or the negative electrode lamp post are connected to the corresponding support member.
[0016] In some embodiments of the present application, the support member comprises a body plate and a plurality of first protrusions arranged at the circumferential edge of the body plate, the metal strips not electrically connected to the positive electrode lamp post or the negative electrode lamp post are provided with a plurality of insertion holes, and the plurality of first protrusions are inserted into the plurality of insertion holes one by one.
[0017] In some embodiments of the present application, the support member further comprises a plurality of second protrusions arranged at the circumferential edge of the body plate, and the plurality of second protrusions and the plurality of first protrusions are arranged one by one as a pair of matched pairs, in the pair of first protrusions and second protrusions, the first protrusions are formed with clamping heads, the clamping heads protrude away from the second protrusions, the clamping heads and the circumferential edge of the body plate are spaced to form clamping grooves, one side edge of the insertion hole is clamped in the clamping groove, and the second protrusion is clamped into the insertion hole and abuts the other side edge of the insertion hole.
[0018] In some embodiments of the present application, the positive electrode lamp post or the negative electrode lamp post is arranged as a connecting end, and the end of the bulb opposite to the opening end is provided with a mounting protrusion, the mounting protrusion protrudes towards the opening end, and the mounting protrusion is detachably connected with the connecting end.
[0019] In some embodiments of the present application, the two adjacent LED light strips in each group of LED filament groups are arranged in parallel.
[0020] In some embodiments of the present application, in each group of LED filament groups, the two metal strips are arranged in parallel, and the extension direction of the LED light strip is arranged perpendicularly to the metal strip.
[0021] The present application has at least the following beneficial effects:
[0022] In the LED bulb provided by the present application, the LED structure includes a plurality of metal strips and at least two groups of LED filament groups, wherein one LED filament group is arranged between two adjacent metal strips, and the LED filament group includes a plurality of LED light strips arranged in parallel. Compared with the LED bulb of the related art, the LED structure of the LED bulb of the present application adopts a short and thin LED light strip with a lower price combined with a plurality of metal strips, which basically does not increase the volume of the LED bulb on the basis of meeting the requirements of high luminous flux and high power, and the assembly difficulty of the LED structure and the assembly difficulty between the LED structure and the lamp post component are simplified compared with the assembly mode of directly connecting the LED light strip to the lamp post component. Therefore, the LED bulb of the present application can reduce the overall production cost, thereby improving the market competitiveness. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0024] Figure 1 It is an exploded view of an LED bulb according to an embodiment of the present application;
[0025] Figure 2 It is an exploded view of an LED bulb according to an embodiment of the present application; Figure 1 It is an exploded view of an LED bulb according to an embodiment of the present application; Figure 1
[0026] Figure 3 It is an exploded view of an LED bulb according to an embodiment of the present application; Figure 1 It is an exploded view of an LED bulb according to an embodiment of the present application; Figure 2
[0027] Figure 4 for Figure 1 The diagram shows a flat LED structure used in an LED bulb, wherein two LED filament groups are connected in series.
[0028] Figure 5 for Figure 1 The diagram shows a flat LED structure used in an LED bulb, wherein two LED filament groups are connected in parallel.
[0029] Figure 6 An exploded view of another LED bulb according to an embodiment of this application. Figure 1 ;
[0030] Figure 7 for Figure 6 An exploded view of another LED bulb is shown. Figure 2 ;
[0031] Figure 8 for Figure 6 The diagram shows a different LED structure used in another LED bulb, in which three LED filament groups are connected in series.
[0032] Figure 9 for Figure 6 The diagram shows a different LED structure used in another LED bulb, in which the three LED filament groups are connected in parallel.
[0033] Figure 10 for Figure 6 The diagram shows a flat arrangement of another LED structure used in another type of LED bulb, in which four LED filament groups are connected in series;
[0034] Figure 11 for Figure 6 The diagram shows a flat arrangement of another LED structure used in another type of LED bulb, in which four LED filament groups are connected in parallel;
[0035] Figure 12 for Figure 6 The diagram shows a flat arrangement of another LED structure used in another type of LED bulb, in which two parallel groups are connected in series;
[0036] Figure 13 This is a schematic diagram of the structure of the support member for the LED bulb according to an embodiment of this application;
[0037] Figure 14 This is a schematic diagram of the assembly structure of the LED bulb's lamp post component, LED structure, and support component according to an embodiment of this application.
[0038] Figure 15 For Figure 14 An enlarged schematic view of A in the middle;
[0039] Figure 16 A cross-sectional schematic view of the bulb of the LED bulb of the embodiment of the present application;
[0040] Figure 17 Another LED bulb of the embodiment of the present application after assembly is complete.
[0041] In the drawings, various elements are labeled the same as follows:
[0042] 10, lamp holder;
[0043] 20, bulb; 21, open end; 22, mounting protrusion;
[0044] 30, lamp post member; 31, positive lamp post; 32, negative lamp post; 33, connection end;
[0045] 40, LED structure; 41, metal strip; 411, insertion hole; 42, LED filament group; 421, LED lamp strip; 43, adapter support;
[0046] 50, support; 51, body plate; 52, first protrusion; 521, clamping head; 522, clamping groove; 53, second protrusion. DETAILED DESCRIPTION
[0047] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.
[0048] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0049] In addition, the terms "first", "second", and the like are used only for descriptive purposes, and do not denote or imply relative importance or an ordered ranking of the indicated technical features. Thus, features defined with "first", "second" and the like can include one or more of the features implicitly or explicitly. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.
[0050] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.
[0051] As shown in Figures 1 to 3 , Figure 6 , Figure 7 , Figure 16 and Figure 17 , the LED bulb provided by the embodiments of the present application comprises a lamp cap 10, a bulb shell 20, a lamp post member 30 and an LED structure 40. As shown in Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 16 , the bulb shell 20 has an open end 21 connected with the lamp cap 10. As shown in Figure 2 , Figure 3 , Figure 6 and Figure 7 , the lamp post member 30 is mounted on the lamp cap 10 and extends into the bulb shell 20, the lamp post member 30 is electrically connected with the lamp cap 10, the LED structure 40 is connected with the lamp post member 30, and the LED structure 40 is electrically connected with the lamp post member 30. As shown in Figure 2 , Figure 3 , Figure 6 and Figure 7 , the LED structure 40 is a cage-shaped structure comprising a plurality of metal strips 41 and at least two groups of LED filament groups 42, the plurality of metal strips 41 are arranged at intervals along the extension direction of the lamp post member 30, and each of the plurality of metal strips 41 is individually closed looped around the lamp post member 30, and one LED filament group 42 is arranged in series between adjacent two metal strips 41. As shown in Figure 4 , Figure 5 , Figures 8 to 12 , the LED filament group 42 comprises a plurality of LED lamp strips 421 arranged in parallel, and in each group of LED filament groups 42, adjacent two LED lamp strips 421 are arranged at intervals.
[0052] In the LED bulb provided in the present application, the LED structure 40 comprises a plurality of metal strips 41 and at least two groups of LED filament groups 42, wherein one LED filament group 42 is arranged between two adjacent metal strips 41, and the LED filament group 42 comprises a plurality of LED lamp strips 421 arranged in parallel, and the two metal strips 41 are respectively used as the positive and negative electrode ends of the plurality of LED lamp strips 421 arranged in parallel, and the plurality of LED lamp strips 421 of each group of LED filament groups 42 are simultaneously powered to emit light, and the output lumens of the LED bulb of the present application can reach 2000 lm or more, meeting the high lumen and high power requirements of the LED bulb. Moreover, since each LED lamp strip 421 in each group of LED filament groups 42 is parallel to each other, even if one or several LED lamp strips 421 fail, it will not affect the normal power supply and light emission of other LED lamp strips 421, which is beneficial to prolong the service life of the LED bulb. Compared with the LED bulb of the related art, the LED structure 40 of the LED bulb of the present application comprises at least two groups of LED filament groups 42, so that the required length of each LED lamp strip 421 in each group of LED filament groups 42 is shortened, that is, the LED structure 40 adopts a combination of short and thin LED lamp strips 421 with a lower price and a plurality of metal strips 41, meeting the requirements of high lumen and high power, and basically not increasing the volume of the LED bulb. Moreover, compared with the assembly difficulty of the assembly mode in which the LED lamp strip is directly connected to the lamp column member, the assembly difficulty of the LED structure 40 and the assembly difficulty between the LED structure 40 and the lamp column member 30 are simplified. Therefore, the LED bulb of the present application can reduce the overall production cost, thereby improving the market competitiveness.
[0053] In some embodiments of the present application, as shown in Figure 4 The LED structure 40 of the LED bulb comprises two groups of LED filament groups 42. Moreover, the lamp column member 30 comprises a positive electrode lamp column 31 and a negative electrode lamp column 32. When the LED structure 40 is assembled to the lamp column member 30, the metal strips 41 at both ends of the LED structure 40 are electrically connected to the positive electrode lamp column 31 and the negative electrode lamp column 32, respectively, so that the two groups of LED filament groups 42 are arranged in series.
[0054] In some embodiments of the present application, as shown in Figure 5 The LED structure 40 of the LED bulb comprises two groups of LED filament groups 42. Moreover, the lamp column member 30 comprises a positive electrode lamp column 31 and a negative electrode lamp column 32. When the LED structure 40 is assembled to the lamp column member 30, the metal strips 41 at both ends of the LED structure 40 are electrically connected to one of the positive electrode lamp column 31 and the negative electrode lamp column 32, and the metal strip 41 in the middle of the LED structure 40 is electrically connected to the other one of the positive electrode lamp column 31 and the negative electrode lamp column 32, so that the two groups of LED filament groups 42 are arranged in parallel.
[0055] In some embodiments of the present application, as shown in Figure 9 and Figure 11 , the LED structure 40 comprises n groups of LED filament groups 42, where n is an integer and n≥3. And the lamp post member 30 comprises a positive lamp post 31 and a negative lamp post 32. When the LED structure 40 is assembled to the lamp post member 30, the metal strips 41 at both ends of the LED structure 40 are respectively electrically connected to the positive lamp post 31 and the negative lamp post 32, so that all the LED filament groups 42 are arranged in series.
[0056] In some embodiments of the present application, as shown in Figure 8 and Figure 10 , the LED structure 40 comprises n groups of LED filament groups 42, where n is an integer and n≥3. And the lamp post member 30 comprises a positive lamp post 31 and a negative lamp post 32. When the LED structure 40 is assembled to the lamp post member 30, the metal strips 41 at both ends of the LED structure 40 are respectively electrically connected to the positive lamp post 31 and the negative lamp post 32, so that all the LED filament groups 42 are arranged in series.
[0057] In some embodiments of the present application, as shown in Figure 12 , the LED structure 40 comprises n groups of LED filament groups 42, where n is an integer and n≥3, and m groups of adjacent LED filament groups 42 are arranged in series as a light source group, where m is an integer and m≥2, and n is an integer multiple of m and n≥2m. And the lamp post member 30 comprises a positive lamp post 31 and a negative lamp post 32. When the LED structure 40 is assembled to the lamp post member 30, any two light source groups are electrically connected in parallel to the positive lamp post 31 and the negative lamp post 32.
[0058] In the preparation of the LED structure 40 of the embodiments of the present application, a plurality of metal strips 41 are laid flat, and each metal strip 41 is parallel to each other. Then, a plurality of LED light strips 421 are placed between adjacent two metal strips 41 in the extension direction of the metal strips 41, and the two ends of each LED light strip 421 are welded on the corresponding metal strip 41. Then, each metal strip 41 is wound up to butt joint and weld the two ends. In this way, the LED structure 40 with a cage structure is prepared, and the preparation process is simple, fast and efficient.
[0059] As shown in Figure 2 , Figure 3 , Figure 6 and Figure 7As shown in the LED bulb of some embodiments of the present application, the LED structure 40 further comprises a plurality of adapter supports 43, and the positive electrode lamp post 31 and the negative electrode lamp post 32 are connected with the adapter supports 43. In this way, the adapter support 43 connected with the positive electrode lamp post 31 serves as the connecting end of the positive electrode lamp post 31 and the metal strip 41, and the adapter support 43 connected with the negative electrode lamp post 32 serves as the connecting end of the negative electrode lamp post 32 and the metal strip 41, that is, the metal strip 41 electrically connected with the positive electrode lamp post 31 or the negative electrode lamp post 32 is electrically connected with the corresponding adapter support 43. In this way, the assembly process is simple, fast and efficient.
[0060] Since the LED structure 40 in the cage structure is sleeved outside the lamp post member 30, and the LED light strips 421 are all flexible strips, in order to enable the LED structure 40 to be stably supported, as shown in Figure 6 , Figure 7 , Figure 13 and Figure 14 , the LED bulb further comprises a support member 50 made of insulating material, the positive electrode lamp post 31 and / or the negative electrode lamp post 32 is connected with the support member 50, and the metal strip 41 not electrically connected with the positive electrode lamp post 31 or the negative electrode lamp post 32 is connected with the corresponding support member 50. The support member 50 installed on the lamp post member 30 assists in supporting each metal strip 41, so that the LED structure 40 as a whole is stably supported, so as to avoid damage to the LED structure 40 of the LED bulb caused by vibration, impact or other mechanical impact during the movement of the LED bulb.
[0061] The support member 50 includes but is not limited to being made of transparent polyimide (Polyimide, abbreviated as PI) or mica or other equivalent materials.
[0062] As shown in Figure 13 and Figure 15 , the support member 50 comprises a body plate 51 and a plurality of first protrusions 52 arranged at the circumferential edge of the body plate 51, and as shown in Figure 8 , Figure 10 and Figure 12 , the metal strip 41 not electrically connected with the positive electrode lamp post 31 or the negative electrode lamp post 32 is provided with a plurality of insertion holes 411. During assembly, the plurality of first protrusions 52 are inserted one by one into the plurality of insertion holes 411, so that the support member 50 and the corresponding metal strip 41 are assembled, so that the LED structure 40 as a whole is stably supported.
[0063] Further, as shown in Figure 13 and Figure 15As shown, the support member 50 further comprises a plurality of second protrusions 53 which are spaced apart from the peripheral edge of the body plate 51, and the plurality of second protrusions 53 are spaced apart from the plurality of first protrusions 52 correspondingly as a pair of matching, in which the first protrusion 52 is formed with a clamping head 521 which protrudes away from the second protrusion 53, and the clamping head 521 and the peripheral edge of the body plate 51 are spaced apart to form a clamping groove 522, one side edge of the insertion hole 411 is clamped in the clamping groove 522, and the second protrusion 53 is clamped into the insertion hole 411 and abuts against the other side edge of the insertion hole 411. In this way, each metal strip 41 is limited by the first protrusion 52 and the second protrusion 53, so that the LED structure 40 as a whole cannot rotate circumferentially relative to the lamp post member 30. Moreover, the clamping head 521 hooks each metal strip 41, preventing the metal strip 41 from being separated from the support member 50, thereby maintaining the support function of the support member 50 to the LED structure 40, and always maintaining the LED structure 40 to be stably supported.
[0064] In some embodiments of the LED bulb of the present application, as shown in Figure 2 、 Figure 3 、 Figure 6 and Figure 7 , the positive lamp post 31 or the negative lamp post 32 is provided as a connecting end 33, and, as shown in Figures 1 to 3 、 Figure 6 、 Figure 7 and Figure 16 , the end of the bulb shell 20 opposite to the open end 21 is provided with a mounting protrusion 22 which protrudes towards the open end 21, and the mounting protrusion 22 is detachably connected with the connecting end 33. In this way, when the LED structure 40 and the lamp post member 30 as a whole are inserted into the bulb shell 20, the connecting end 33 is connected to the mounting protrusion 22, and the lamp cap 10 is stably mounted on the open end 21, that is, the two ends of the lamp post member 30 are limited and supported, so that the LED structure 40 and the lamp post member 30 as a whole are stably maintained in the bulb shell 20, and the LED structure 40 and the lamp post member 30 in the bulb shell 20 cannot be randomly shaken, thereby ensuring stable light emission.
[0065] In the LED bulb of the present application, as shown in Figures 2 to 12 , two adjacent LED filaments 421 in each group of LED filament groups 42 are arranged in parallel. Moreover, in each group of LED filament groups 42, two metal strips 41 are arranged in parallel, and the extension direction of each LED filament 421 is arranged perpendicularly to the metal strip 41. Of course, the extension direction of each LED filament 421 and the metal strip 41 can also be intersected, that is, each LED filament 421 is inclined relative to the metal strip 41.
[0066] The LED bulb of the present application includes but is not limited to a bulb whose main body is an ellipsoid, as shown in Figures 1 to 3 ,Figure 6 、 Figure 7 As shown in FIG. 2, the body of the bubble 20 can be in the shape of a cylinder, as shown in FIG. 3, or in the shape of a bulb, as shown in FIG. 4. Figure 17
[0067] The above description is merely illustrative of the application, and not in limitation thereof. It will thus be understood that any modifications and / or improvements that come within the spirit and scope of the application are intended to be included.
Claims
1. An LED bulb, comprising: a lamp cap (10); a bulb shell (20) having an open end (21) connected with the lamp cap (10); a lamp post member (30) mounted on the lamp cap (10) and extending into the bulb shell (20), the lamp post member (30) being electrically connected with the lamp cap (10); an LED structure (40) connected with the lamp post member (30), the LED structure (40) being electrically connected with the lamp post member (30); characterized in that, the LED structure (40) is a cage structure comprising a plurality of metal bars (41) and at least two groups of LED filament groups (42), the plurality of metal bars (41) are arranged at intervals along the extension direction of the lamp post member (30), each of the plurality of metal bars (41) is individually closed looped around the lamp post member (30), and one LED filament group (42) is arranged in series between two adjacent metal bars (41), the LED filament group (42) comprises a plurality of LED light bars (421) arranged in parallel, and in each group of LED filament groups (42), two adjacent LED light bars (421) are arranged at intervals.
2. The LED bulb according to claim 1, characterized in that, the LED structure (40) comprises two groups of LED filament groups (42), and the lamp post member (30) comprises a positive electrode lamp post (31) and a negative electrode lamp post (32); the metal bars (41) at both ends of the LED structure (40) are electrically connected with one of the positive electrode lamp post (31) and the negative electrode lamp post (32), and the metal bars (41) in the middle of the LED structure (40) are electrically connected with the other of the positive electrode lamp post (31) and the negative electrode lamp post (32), so that the two groups of LED filament groups (42) are arranged in parallel; or, the metal bars (41) at both ends of the LED structure (40) are respectively electrically connected with the positive electrode lamp post (31) and the negative electrode lamp post (32), so that the two groups of LED filament groups (42) are arranged in series.
3. The LED bulb according to claim 1, characterized in that, the LED structure (40) comprises n groups of LED filament groups (42), where n is an integer and n≥3, and the lamp post member (30) comprises a positive electrode lamp post (31) and a negative electrode lamp post (32); a plurality of metal bars (41) are alternately electrically connected with the positive electrode lamp post (31) and the negative electrode lamp post (32) in turn, so that two adjacent LED filament groups (42) are arranged in parallel; or, the metal bars (41) at both ends of the LED structure (40) are respectively electrically connected with the positive electrode lamp post (31) and the negative electrode lamp post (32), so that all the LED filament groups (42) are arranged in series. Alternatively, adjacent m groups of the LED filament groups (42) are connected in series as a light source group, wherein m is an integer and m≥2, n is an integer multiple of m and n≥2m, and any two of the light source groups are connected in parallel to the positive lamp post (31) and the negative lamp post (32).
4. The LED bulb according to claim 2 or 3, characterized in that, The LED structure (40) further comprises a plurality of adapter supports (43), the positive lamp post (31) and the negative lamp post (32) are connected with the adapter supports (43), and the metal strips (41) electrically connected with the positive lamp post (31) or the negative lamp post (32) are electrically connected with the corresponding adapter supports (43).
5. The LED bulb according to claim 4, characterized in that, The LED bulb further comprises a support member (50) made of insulating material, the positive lamp post (31) and / or the negative lamp post (32) are connected with the support member (50), and the metal strips (41) not electrically connected with the positive lamp post (31) or the negative lamp post (32) are connected with the corresponding support member (50).
6. The LED bulb according to claim 5, characterized in that, The support member (50) comprises a body plate (51) and a plurality of first protrusions (52) arranged at the circumferential edge of the body plate (51), the metal strips (41) not electrically connected with the positive lamp post (31) or the negative lamp post (32) are provided with a plurality of insertion holes (411), and a plurality of the first protrusions (52) are inserted into a plurality of the insertion holes (411) one by one.
7. The LED bulb according to claim 6, characterized in that, The support member (50) further comprises a plurality of second protrusions (53) arranged at the circumferential edge of the body plate (51), a plurality of the second protrusions (53) and a plurality of the first protrusions (52) are arranged one by one as a pair of matched pairs, in the pair of the first protrusions (52) and the second protrusions (53), the first protrusions (52) are formed with clamping heads (521) protruding away from the second protrusions (53), the clamping heads (521) and the circumferential edge of the body plate (51) are spaced to form clamping grooves (522), one side edge of the insertion hole (411) is clamped in the clamping groove (522), and the second protrusion (53) is clamped into the insertion hole (411) and abuts the other side edge of the insertion hole (411).
8. The LED bulb according to claim 5, characterized in that, The positive lamp post (31) or the negative lamp post (32) is provided as a connecting end (33), one end of the bulb shell (20) opposite to the open end (21) is provided with a mounting protrusion (22) protruding towards the open end (21), and the mounting protrusion (22) is detachably connected with the connecting end (33).
9. The LED bulb according to any one of claims 1-3, characterized in that, Two adjacent LED light strips (421) in each group of the LED filament group (42) are arranged in parallel.
10. The LED bulb of claim 9, wherein, In each group of the LED filament group (42), two metal strips (41) are arranged in parallel, and the extension direction of the LED light strip (421) is perpendicular to the metal strip (41).