Lighting device with composite lamp cap

Abstract

A lighting device with a composite lamp holder includes a lamp holder, a circuit board, a plurality of first connecting pins, a plurality of second connecting pins, and a tubular lamp housing. The lamp holder includes a hollow cylindrical portion and a connecting portion. The hollow cylindrical portion has an opening and a mounting base, forming an accommodating space between the opening and the mounting base. The connecting portion includes a plurality of first hollow connecting tubes and second hollow connecting tubes connected to the accommodating space. The circuit board is disposed on the mounting base and includes a plurality of first contacts and second contacts. The plurality of first connecting pins pass through the plurality of first hollow connecting tubes to connect to the plurality of first contacts. The plurality of second connecting pins pass through the plurality of second hollow connecting tubes to connect to the plurality of second contacts. The tubular lamp housing is connected to the lamp holder.

Description

Technical Field

[0001] This invention relates to a lighting device, and more particularly to a lighting device having a composite lamp holder. Background Technology

[0002] Existing LED lamps are typically connected in series using male and female connectors, with components connected via silicone wires or jumpers. This connection structure suffers from low production efficiency and poor reliability. Furthermore, it is only suitable for splicing a few lamps and cannot connect large numbers of lamps in series, thus significantly limiting its applications. Summary of the Invention

[0003] According to an embodiment of the present invention, a lighting device with a composite lamp holder is provided, comprising a lamp holder, a circuit board, a plurality of first connecting pins, a plurality of second connecting pins, and a tubular lamp housing. The lamp holder includes a hollow cylindrical portion and a connecting portion. The hollow cylindrical portion has an opening and a mounting base surface, forming an accommodating space between the opening and the mounting base surface. The connecting portion includes a plurality of first hollow connecting tubes and a plurality of second hollow connecting tubes connected to the accommodating space. The circuit board is disposed on the mounting base surface and includes a plurality of first contacts and a plurality of second contacts. The plurality of first connecting pins pass through the plurality of first hollow connecting tubes to connect to the plurality of first contacts. The plurality of second connecting pins pass through the plurality of second hollow connecting tubes to connect to the plurality of second contacts. The tubular lamp housing is connected to the lamp holder.

[0004] In one embodiment, the circuit board includes two curved portions and two straight portions, the two curved portions being opposite to each other, and the two straight portions being opposite to each other.

[0005] In one embodiment, the circuit board has a plurality of recesses, and the inner wall of the hollow cylindrical portion has a plurality of protrusions. The plurality of recesses are disposed on the periphery of the circuit board and correspond to the plurality of protrusions.

[0006] In one embodiment, the plurality of first hollow connecting pipes include a main connecting pipe and two auxiliary connecting pipes. The main connecting pipe has a fixing post disposed on its outer wall, the fixing post being oriented towards the central axis of the lamp holder. Each auxiliary connecting pipe has a fixing hook disposed on its outer wall, the fixing hook being oriented towards the central axis of the lamp holder.

[0007] In one embodiment, the main connecting pipe also has two positioning posts disposed on its outer wall, with a fixing post located between the two positioning posts.

[0008] In one embodiment, each of the second hollow connecting pipes has a plurality of limiting posts disposed on its outer wall, and the diameter of the circle formed by the connection of the top surfaces of the plurality of limiting posts is less than or equal to the inner diameter of the first hollow connecting pipe.

[0009] In one embodiment, the lighting device further includes a light source board and a flexible board, with the light source board connected to the circuit board via the flexible board.

[0010] In one embodiment, the flexible plate is a flexible circuit board.

[0011] In one embodiment, the circuit board has an electrical connection groove, through which a flexible plate passes to be fixed to and electrically connected with the circuit board.

[0012] In one embodiment, the circuit board further has a plurality of tooling positioning slots, and an electrical connection slot is disposed between the plurality of tooling positioning slots.

[0013] As described above, the lighting device with a composite lamp holder according to embodiments of the present invention may have one or more of the following advantages:

[0014] (1) In one embodiment of the present invention, the lighting device has a composite lamp holder, and the composite lamp holder has a composite connection structure that has both a male and a female connector, so that the lighting device can be interconnected with the composite lamp holder of another lighting device through the composite lamp holder. The above connection structure can greatly increase the number of interconnected lighting devices, and the stability and reliability of the above connection structure can be greatly improved, so it can truly meet the needs of practical applications.

[0015] (2) In one embodiment of the present invention, the lighting device has a composite lamp holder, and this composite lamp holder has a multi-functional fixing structure. This multi-functional fixing structure not only provides a fixing function, but also a foolproof function. Therefore, the composite lamp holder makes the lighting device more convenient to install and better meets the needs of users.

[0016] (3) In one embodiment of the present invention, the lighting device has a composite lamp head, and the internal structure of the composite lamp head is easy to manufacture, so the production efficiency of the lighting device can be greatly improved and the manufacturing cost of the lighting device can be effectively reduced.

[0017] (4) In one embodiment of the present invention, the circuit board of the composite lamp head of the lighting device has a special structural design and multiple tooling positioning grooves. The multiple tooling positioning grooves can reduce the external force applied to the multiple protrusions on the inner wall of the hollow cylindrical part during tooling positioning, and absorb part of the torque generated during pressing, so as to prevent the circuit board and the hollow cylindrical part from being damaged during manufacturing. Therefore, the production yield of the lighting device can be effectively improved.

[0018] (5) In one embodiment of the present invention, the circuit board of the lighting device is fixed to a plurality of first connecting pins and a plurality of second connecting pins by means of crimping, so that the circuit board can have a plurality of holes. The plurality of holes enable the internal space of the lighting device to achieve air pressure balance, which not only improves the reliability of the lighting device, but also improves the heat dissipation efficiency of the lighting device.

[0019] (6) In one embodiment of the present invention, the circuit board of the composite lamp head of the lighting device and the light source board of the lighting device can be connected through a flexible board, which can not only reduce the difficulty of the manufacturing process, but also eliminate noise, thus further reducing the manufacturing cost of the lighting device and effectively improving the performance of the lighting device. Attached Figure Description

[0020] Figure 1 This is an exploded view of a lighting device with a composite lamp holder according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the lamp head of a lighting device with a composite lamp head according to an embodiment of the present invention;

[0022] Figure 3 This is a top view of the lamp head of a lighting device with a composite lamp head according to an embodiment of the present invention;

[0023] Figure 4 The image shows a bottom view of the lamp head of a lighting device with a composite lamp head according to an embodiment of the present invention.

[0024] Figure 5 This is a top view of a circuit board of a lighting device with a composite lamp holder according to an embodiment of the present invention;

[0025] Figure 6 This is a top view of a flexible plate of a lighting device with a composite lamp holder according to an embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the combination structure of a flexible board and a circuit board of a lighting device with a composite lamp holder according to an embodiment of the present invention.

[0027] Figure 8 This is a schematic diagram showing the interconnection of two lighting devices according to an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Lighting device; 11-Lamp holder; 111-Hollow cylindrical part; 112-Connecting part; 1121A, 1121B, 1221C-First hollow connecting tube; 1122A, 1122B, 1222C-Second hollow connecting tube; 12-Circuit board; 121A, 121B, 121C-First contact; 122A, 122B, 122C-Second contact; 13A, 13B, 13C-First connecting pin; 14A, 14B, 14C-Second connecting pin; 15-Tube lamp Shell; 16-Flexible board; 161-Welding end; 162-Connecting end; 1611-Angled part; 17-Light source board; 171-Carrier board; 172-Light source; 18-Electrical connector; AS-Accommodation space; P-Opening; BS-Mounting bottom surface; F1-Fixing post; F2-Positioning post; F3-Fixing hook; F4-Limiting post; R1-Recessed part; P1-Protruding part; PT-Tooling positioning groove; ET-Electrical connection groove; LH-Connecting hole; BP-Bending part; SP-Straight part; CA-Central axis of lamp holder.

[0030] The following detailed description of the features and advantages of the present invention is sufficient to enable anyone skilled in the art to understand the technical content of the present invention and implement it accordingly. Based on the content disclosed in this specification, the claims and drawings, anyone skilled in the art can easily understand the purpose and advantages of this creation. Detailed Implementation

[0031] The following description, with reference to the accompanying drawings, illustrates embodiments of a lighting device with a composite lamp holder according to the present invention. For clarity and ease of illustration, the dimensions and proportions of the components in the drawings may be exaggerated or reduced. In the following description and / or claims, when a component is referred to as "connected" or "coupled" to another component, it may be directly connected or coupled to that other component or there may be an intervening component; when a component is referred to as "directly connected" or "directly coupled" to another component, there is no intervening component. Other terms used to describe the relationship between components or layers should be interpreted in the same manner. For ease of understanding, the same components in the following embodiments are indicated by the same symbols.

[0032] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 . Figure 1 and Figure 2 This is an exploded view of a lighting device with a composite lamp holder according to an embodiment of the present invention, and a schematic diagram of the structure of the lamp holder. Figure 3 and Figure 4The figures show a top and bottom view of the lamp head of a lighting device with a composite lamp head according to an embodiment of the present invention. As shown, the lighting device 1 includes a lamp head 11, a circuit board 12, multiple first connecting pins 13A, 13B, and 13C, multiple second connecting pins 14A, 14B, and 14C, a tubular lamp housing 15, a flexible board 16, a light source board 17, and an electrical connector 18. In this embodiment, the multiple first connecting pins 13A, 13B, and 13C can be male pins, while the multiple second connecting pins 14A, 14B, and 14C can be female pins. The multiple first connecting pins 13A, 13B, and 13C can respectively correspond to the live wire (L), neutral wire (N), and alternating current (AC). Similarly, the multiple second connecting pins 14A, 14B, and 14C can respectively correspond to the live wire (L), neutral wire (N), and alternating current (AC).

[0033] The lamp holder 11 includes a hollow cylindrical portion 111 and a connecting portion 112. The hollow cylindrical portion 111 has an opening P and a mounting base BS, forming an accommodating space AS between the opening P and the mounting base BS. The connecting portion 112 includes a plurality of first hollow connecting tubes 1121A, 1121B, and 1121C connected to the accommodating space AS, and a plurality of second hollow connecting tubes 1122A, 1122B, and 1122C.

[0034] Circuit board 12 is mounted on mounting surface BS and includes multiple first contacts 121A, 121B, 121C and multiple second contacts 122A, 122B, 122C. The multiple first connecting pins 13A, 13B, 13C pass through the multiple first hollow connecting tubes 1121A, 1121B, 1121C respectively to connect to the multiple first contacts 121A, 121B, 121C. The multiple second connecting pins 14A, 14B, 14C pass through the multiple second hollow connecting tubes 1122A, 1122B, 1122C respectively to connect to the multiple second contacts 122A, 122B, 122C. The multiple first contacts 121A, 121B, 121C can correspond to the live wire (L), neutral wire (N), and alternating current (AC) wire, respectively. Similarly, the aforementioned multiple second contacts 122A, 122B, and 122C can correspond to the live wire (L), neutral wire (N), and alternating current (AC) wire, respectively. Necessary circuit components such as power supplies and drivers can be mounted on circuit board 12.

[0035] The light source board 17 is connected to the circuit board 12 via the flexible board 16. The light source board 17 includes a carrier board 171 (such as a printed circuit board) and a plurality of light sources 172. In one embodiment, the plurality of light sources 172 may be light-emitting diodes (LEDs). In one embodiment, the flexible board 16 is a flexible circuit board.

[0036] One end of the tubular lamp housing 15 is connected to the lamp holder 11, and the other end is connected to the electrical connector 18. The tubular lamp housing 15 can be made of a transparent or translucent material, such as glass or plastic.

[0037] The first hollow connecting pipe 1121A is the main connecting pipe, while the first hollow connecting pipes 1121B and 1121C are auxiliary connecting pipes. The first hollow connecting pipe 1121A (main connecting pipe) has a fixing post F1 and two positioning posts F2 installed on its outer wall. The fixing post F1 is positioned towards the central axis CA of the lamp holder 11 and is located between the two positioning posts F2. The first hollow connecting pipe 1121B (auxiliary connecting pipe) has a fixing hook F3 installed on its outer wall, which is also positioned towards the central axis CA of the lamp holder 11. The first hollow connecting pipe 1121B (auxiliary connecting pipe) also has the same structure. Thus, when two lighting devices 1 are connected to each other, the second hollow connecting pipes 1122A, 1122B, and 1122C of the lamp holder 11 of one lighting device 1 are respectively inserted into the first hollow connecting pipes 1121A, 1121B, and 1121C of the lamp holder 11 of the other lighting device 1. At this time, the fixing post F1 of the first hollow connecting tube 1121A can be fixed by the fixing hooks F2 of the first hollow connecting tubes 1121B and 1121C. Simultaneously, the two positioning posts F2 of the first hollow connecting tube 1121A can fill the space between the first hollow connecting tubes 1121B and 1121C. Thus, the stability and reliability of this connection structure can be effectively improved.

[0038] Each of the second hollow connecting tubes 1122A, 1122B, and 1122C has multiple limiting posts F4 disposed on its outer wall. The diameter of the circle formed by the connection of the top surfaces of the multiple limiting posts F4 is less than or equal to the inner diameter of the multiple first hollow connecting tubes 1121A, 1121B, and 1121C. Thus, when two lighting devices 1 are connected to each other, the second hollow connecting tubes 1122A, 1122B, and 1122C of the lamp holder 11 of one lighting device 1 are respectively inserted into the first hollow connecting tubes 1121A, 1121B, and 1121C of the lamp holder 11 of the other lighting device 1. At this time, the top surfaces of the multiple limiting posts F4 can abut against the inner walls of the multiple first hollow connecting tubes 1121A, 1121B, and 1121C. Therefore, the stability and reliability of this connection structure can be effectively improved. As described above, the lamp holder 11 has a multi-functional fixing structure, which not only provides a fixing function but also a foolproof function. Therefore, the lamp holder 11 makes the lighting device 1 more convenient to install and better meets the needs of users.

[0039] When two lighting devices 1 are connected to each other, the lamp holders 11 of the two lighting devices 1 can be electrically connected through the above-described structure to form a long lamp tube. After this long lamp tube is installed on the lamp holder, it can form a complete circuit, so that the long lamp tube can be driven to emit light.

[0040] As described above, the lighting device 1 has a composite lamp holder 11, and this composite lamp holder 11 has a composite connection structure that simultaneously has a male and a female connector, allowing the lighting device 1 to be interconnected with the composite lamp holder 11 of another lighting device 1 through this composite lamp holder 11. This connection structure can significantly increase the number of interconnected lighting devices 1, and the stability and reliability of the connection structure can be greatly improved, thus effectively meeting the needs of practical applications.

[0041] Of course, this embodiment is only for illustrative purposes and is not intended to limit the scope of the invention. Equivalent modifications or alterations made to the lighting device 1 with a composite lamp head according to this embodiment should still be included within the patent scope of the invention.

[0042] It is worth noting that the existing connection structures for lighting devices have low production efficiency and poor reliability. Furthermore, these connection structures are only suitable for splicing a few lamps and cannot connect a large number of lamps in series, thus greatly limiting their application. In contrast, according to embodiments of the present invention, the lighting device has a composite lamp holder with a composite connection structure that simultaneously has male and female connectors, allowing the lighting device to be interconnected with the composite lamp holders of other lighting devices. This connection structure significantly increases the number of interconnected lighting devices and greatly improves the stability and reliability of the connection structure, thus effectively meeting the needs of practical applications.

[0043] According to an embodiment of the present invention, the lighting device has a composite lamp holder, which has a multi-functional fixing structure that provides not only fixing but also error-proofing. Therefore, the composite lamp holder makes the lighting device more convenient to install and better meets the needs of the user.

[0044] Furthermore, according to an embodiment of the present invention, the lighting device has a composite lamp head, and the internal structure of this composite lamp head is easy to manufacture, thus greatly improving the production efficiency of the lighting device and effectively reducing the manufacturing cost of the lighting device.

[0045] Furthermore, according to embodiments of the present invention, the circuit board of the composite lamp head of the lighting device has a special structural design and multiple tooling positioning slots. These multiple tooling positioning slots can reduce the external force applied to the multiple protrusions on the inner wall of the hollow cylindrical portion during tooling positioning and absorb some of the torque generated during pressing, thereby preventing damage to the circuit board and the hollow cylindrical portion during manufacturing. Therefore, the production yield of the lighting device can be effectively improved.

[0046] Furthermore, according to an embodiment of the present invention, the circuit board of the lighting device is fixed to a plurality of first connecting pins and a plurality of second connecting pins by crimping, so that the circuit board can have a plurality of holes. The plurality of holes enable the internal space of the lighting device to achieve air pressure balance, which not only improves the reliability of the lighting device, but also improves the heat dissipation efficiency of the lighting device.

[0047] Furthermore, according to embodiments of the present invention, the circuit board of the composite lamp holder and the light source board of the lighting device can be connected through a flexible board, which not only reduces the difficulty of the manufacturing process but also eliminates noise, thus further reducing the manufacturing cost of the lighting device and effectively improving its performance. As can be seen from the above, the lighting device with a composite lamp holder according to embodiments of the present invention can indeed achieve excellent technical results.

[0048] Please see Figure 5 This is a top view of the circuit board of a lighting device with a composite lamp holder according to an embodiment of the present invention, and please also refer to... Figure 3 As shown in the figure, the circuit board 12 has six connection holes LH. The circuit board 12 can be fixed to the first connection pins 13A, 13B, 13C and the second connection pins 14A, 14B, 14C via the above-mentioned multiple connection holes LH by crimping. In this way, the circuit board 12 can have multiple holes. The above-mentioned multiple holes enable the internal space of the lighting device 1 to achieve air pressure balance, which not only improves the reliability of the lighting device 1, but also improves the heat dissipation efficiency of the lighting device 1.

[0049] The circuit board 12 has multiple recesses R1 located around its periphery. The inner wall of the hollow cylindrical portion 111 has multiple protrusions P1 corresponding to the recesses R1, evenly distributed along the inner wall of the hollow cylindrical portion 111. When the circuit board 12 is mounted on the mounting surface BS of the hollow cylindrical portion 111, the recesses R1 of the circuit board 12 can be embedded into the protrusions P1 of the hollow cylindrical portion 111.

[0050] In addition, the circuit board 12 includes two curved portions BP and two straight portions SP. The two curved portions BP are opposite to each other, and the two straight portions SP are also opposite to each other. When the circuit board 12 is mounted on the mounting bottom surface BS of the hollow cylindrical portion 111, the above-described structural design can reduce interference between the circuit board 12 and the hollow cylindrical portion 111, thereby reducing the difficulty of the manufacturing process.

[0051] Furthermore, the circuit board 12 has an electrical connection groove ET and two tooling positioning grooves PT. The electrical connection groove ET is disposed between the two tooling positioning grooves PT. The flexible plate 16 passes through the electrical connection groove ET to be fixed and electrically connected to the circuit board 12. During tooling positioning, the fixture can be embedded in the two tooling positioning grooves PT to reduce the external force applied to the multiple protrusions P1 on the inner wall of the hollow cylindrical portion 111. In addition, the two tooling positioning grooves PT also absorb part of the torque generated during pressing. Therefore, the structural design of the circuit board 12 can effectively prevent the circuit board 12 and the hollow cylindrical portion 111 from being damaged during manufacturing, thereby improving the production yield of the lighting device.

[0052] Of course, this embodiment is only for illustrative purposes and is not intended to limit the scope of the invention. Equivalent modifications or alterations made to the lighting device 1 with a composite lamp head according to this embodiment should still be included within the patent scope of the invention.

[0053] Please see Figure 6 and Figure 7 This is a top view of a flexible plate of a lighting device with a composite lamp holder according to an embodiment of the present invention, and a schematic diagram of the combined structure of the flexible plate and the circuit board. As shown, the flexible plate 16 has a welding end 161 and a connecting end 162 connected to each other, and the width of the connecting end 162 is greater than the width of the welding end 161. In addition, there are two beveled portions 1611 between the welding end 161 and the connecting end 162. The welding end 161 of the flexible plate 16 passes through the electrical connection groove ET of the circuit board 12 and is fixed to the circuit board 12 by welding. The two beveled portions 1611 make it easy for the flexible plate 16 to pass through the electrical connection groove ET to be fixed and electrically connected to the circuit board 12. The connecting end 162 of the flexible plate 16 is electrically connected to the light source board 17.

[0054] As described above, the circuit board 12 and the light source board 17 can be connected through the flexible board 16, which not only reduces the difficulty of the manufacturing process but also eliminates noise, thus further reducing the manufacturing cost of the lighting device 1. At the same time, the performance of the lighting device 1 can also be improved.

[0055] Of course, this embodiment is only for illustrative purposes and is not intended to limit the scope of the invention. Equivalent modifications or alterations made to the lighting device 1 with a composite lamp head according to this embodiment should still be included within the patent scope of the invention.

[0056] Please see Figure 8 This is a schematic diagram illustrating the interconnection of two lighting devices according to an embodiment of the present invention. As shown, when the two lighting devices 1 are interconnected, the second hollow connecting tubes 1122A, 1122B, and 1122C of the lamp holder 11 of one lighting device 1 are respectively inserted into the first hollow connecting tubes 1121A, 1121B, and 1121C of the lamp holder 11 of the other lighting device 1. In this way, the two lighting devices 1 can be fixed together and electrically connected to form a long lamp tube. The electrical connectors 18 of the two lighting devices 1 can be inserted into the two ends of the lamp holder to form a complete circuit, allowing the long lamp tube to be driven to emit light.

[0057] One or more lighting devices 1 can be installed between the two lighting devices 1. Each of these lighting devices 1 has two lamp holders 11 at each end, allowing them to be connected to each other. In this way, three or more lighting devices 1 can be connected to form a long lamp tube. Therefore, the above connection structure can significantly increase the number of interconnected lighting devices 1, and the stability and reliability of the connection structure can be greatly improved, thus effectively meeting the needs of practical applications.

[0058] Of course, this embodiment is only for illustrative purposes and is not intended to limit the scope of the invention. Equivalent modifications or alterations made to the lighting device 1 with a composite lamp head according to this embodiment should still be included within the patent scope of the invention.

[0059] In summary, according to embodiments of the present invention, the lighting device has a composite lamp holder, and this composite lamp holder has a composite connection structure that simultaneously has a male and a female connector, allowing the lighting device to be interconnected with the composite lamp holder of another lighting device through this composite lamp holder. The aforementioned connection structure can significantly increase the number of interconnected lighting devices, and the stability and reliability of the aforementioned connection structure can be greatly improved, thus effectively meeting the needs of practical applications.

[0060] According to an embodiment of the present invention, the lighting device has a composite lamp holder, which has a multi-functional fixing structure that provides not only fixing but also error-proofing. Therefore, the composite lamp holder makes the lighting device more convenient to install and better meets the needs of the user.

[0061] Furthermore, according to an embodiment of the present invention, the lighting device has a composite lamp head, and the internal structure of this composite lamp head is easy to manufacture, thus greatly improving the production efficiency of the lighting device and effectively reducing the manufacturing cost of the lighting device.

[0062] Furthermore, according to embodiments of the present invention, the circuit board of the composite lamp head of the lighting device has a special structural design and multiple tooling positioning slots. These multiple tooling positioning slots can reduce the external force applied to the multiple protrusions on the inner wall of the hollow cylindrical portion during tooling positioning and absorb some of the torque generated during pressing, thereby preventing damage to the circuit board and the hollow cylindrical portion during manufacturing. Therefore, the production yield of the lighting device can be effectively improved.

[0063] Furthermore, according to an embodiment of the present invention, the circuit board of the lighting device is fixed to a plurality of first connecting pins and a plurality of second connecting pins by crimping, so that the circuit board can have a plurality of holes. The plurality of holes enable the internal space of the lighting device to achieve air pressure balance, which not only improves the reliability of the lighting device, but also improves the heat dissipation efficiency of the lighting device.

[0064] Furthermore, according to an embodiment of the present invention, the circuit board of the composite lamp head of the lighting device and the light source board of the lighting device can be connected through a flexible board, which can not only reduce the difficulty of the manufacturing process, but also eliminate noise, thus further reducing the manufacturing cost of the lighting device and effectively improving the performance of the lighting device.

[0065] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this invention. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this invention, or equivalent structural or procedural transformations made using the description and drawings of this invention, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this invention.

Claims

1. An illumination device having a compound lamp cap, characterized by comprising: Include: The lamp holder includes a hollow cylindrical portion and a connecting portion. The hollow cylindrical portion has an opening and a mounting bottom surface, forming an accommodating space between the opening and the mounting bottom surface. The connecting portion includes a plurality of first hollow connecting tubes and a plurality of second hollow connecting tubes connected to the accommodating space. The plurality of first hollow connecting tubes include a main connecting tube and two auxiliary connecting tubes. The main connecting tube has a fixing post and two positioning posts disposed on its outer wall. The fixing post is positioned towards the central axis of the lamp holder and is located between the two positioning posts. Each of the auxiliary connecting tubes has a fixing hook disposed on its outer wall, which is positioned towards the central axis of the lamp holder. Each of the second hollow connecting tubes has a plurality of limiting posts disposed on its outer wall. The diameter of the circle formed by the connection of the top surfaces of the plurality of limiting posts is less than or equal to the inner diameter of the first hollow connecting tube. The fixing post of the main connecting tube is fixed by the fixing hook of the two auxiliary connecting tubes, and at the same time, the two positioning posts of the main connecting tube fill the space between the two auxiliary connecting tubes. The circuit board is disposed on the mounting base and includes a plurality of first contacts and a plurality of second contacts; Multiple first connecting pins pass through the multiple first hollow connecting tubes to connect to the multiple first contacts respectively; Multiple second connecting pins pass through the multiple second hollow connecting tubes to connect to the multiple second contacts respectively; as well as A tubular lamp housing is connected to the lamp holder.

2. The lighting device with a composite lamp holder as described in claim 1, characterized in that, The circuit board includes two curved portions and two straight portions, the two curved portions being opposite to each other, and the two straight portions being opposite to each other.

3. The lighting device with a composite lamp holder as described in claim 1, characterized in that, The circuit board has multiple recesses, and the inner wall of the hollow cylindrical portion has multiple protrusions. The multiple recesses are located on the periphery of the circuit board and correspond to the multiple protrusions.

4. The lighting device with a composite lamp holder as described in claim 1, characterized in that, It includes a light source board and a flexible board, wherein the light source board is connected to the circuit board through the flexible board.

5. The lighting device with a composite lamp holder as described in claim 4, characterized in that, The flexible board is a flexible circuit board.

6. The lighting device with a composite lamp holder as described in claim 4, characterized in that, The circuit board has an electrical connection groove, and the flexible plate passes through the electrical connection groove to be fixed to and electrically connected with the circuit board.

7. The lighting device with a composite lamp holder as described in claim 6, characterized in that, The circuit board also has multiple tooling positioning slots, and the electrical connection slots are disposed between the multiple tooling positioning slots.

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