Two-color signal lamp with improved sealing performance

Abstract

The double-color signal lamp comprises a base, a main circuit board and a lampshade, the main circuit board is arranged between the lampshade and the base, and the double-color signal lamp further comprises a partition plate and a wire harness sealing mechanism; the main circuit board comprises a fixing mechanism and a plurality of light-emitting units; the fixing mechanism is arranged in the middle of the main circuit board; the lower portion of the partition plate is connected with the main circuit board through a fixing mechanism and abuts against the inner side of the lampshade. The light-emitting units are symmetrically arranged on two sides of the partition; a diffusion lens is arranged in the area, corresponding to the light-emitting unit, of the lampshade. The wire harness sealing mechanism comprises a wire harness body, a wire harness buckle and a sealing interface; the sealing interface comprises a wire passing hole; limiters are symmetrically arranged on the two sides of the wire passing hole. The wire passing hole is formed in the peripheral block; the wire harness body is arranged in the wire harness hole; the wire harness buckle is in interference fit with the wire passing hole and abuts against the limiting stopper. The partition plate replaces an inclined support to reduce the size of the signal lamp and improve the integrity. And the sealing effect can be enhanced by injecting the pouring sealant into the outer baffle.

Description

Technical Field

[0001] This invention relates to vehicle signal lights, and more particularly to a dual-color signal light with improved sealing. Background Technology

[0002] Currently, the power harness of lighting fixtures is usually fixed and sealed to the lamp base using a rubber sleeve (the rubber sleeve is combined with the lamp base, and the harness passes through the rubber sleeve). However, this structure often has defects such as poor sealing effect (there is a gap between the rubber sleeve and the wiring harness hole in the lamp base, which is not conducive to sealing) and short service life, making it difficult to meet the increasingly stringent automotive-grade requirements of the testing environment. In addition, existing automotive dual-color lights often use symmetrically arranged inclined brackets to install the light-emitting units in order to avoid the two colors of light mixing, so that the two colors of light source are oriented towards the two sides of the signal light to avoid color mixing. However, the inclined bracket assembly is relatively complex and costly (requiring two brackets and separate circuit boards, resulting in poor stability), inconvenient to assemble, and because the isolation effect must be ensured, the inclined bracket occupies more vertical space, which is not conducive to reducing the size of the signal light. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of current dual-color signal lights for vehicles, the present invention provides a dual-color signal light with improved sealing performance, which can improve the overall sealing performance of the signal light.

[0004] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0005] A dual-color signal light with improved sealing includes a base, a main circuit board, and a lampshade. The main circuit board is disposed between the lampshade and the base, and also includes a partition and a wiring harness sealing mechanism. The main circuit board includes a fixing mechanism and several light-emitting units. The fixing mechanism is located in the middle of the main circuit board. The lower part of the partition is connected to the main circuit board through the fixing mechanism, and its lower part abuts against the inner side of the lampshade. The light-emitting units are symmetrically arranged on both sides of the partition. A diffusion lens is provided in the area of ​​the lampshade corresponding to the light-emitting units. The wiring harness sealing mechanism includes a wiring harness body, a wiring harness buckle, and a sealing interface. The sealing interface includes a wire passage hole. Limiters are symmetrically arranged on both sides of the wire passage hole. It also includes an outer perimeter, and the wire passage hole is disposed in the outer perimeter. The wiring harness body includes two sub-wire cores. The shape of the wiring harness buckle matches the wire passage hole, and a through wire harness hole is provided inside. The wiring harness body is disposed in the wire harness hole. The wiring harness buckle is interference-fitted with the wire passage hole and abuts against the limiters. The two sub-wire cores are respectively located on both sides of the limiters and electrically connected to the main circuit board.

[0006] According to one aspect of the present invention, an inner enclosure is provided on the outer edge of the wire hole; the height of the outer enclosure is higher than the height of the inner enclosure; a limiter is provided on the inner enclosure.

[0007] According to one aspect of the invention, a potting cavity is formed between the outer perimeter and the inner perimeter.

[0008] According to one aspect of the present invention, the limiter includes a support portion and a blocking portion; the blocking portion is provided with a wire-separating protrusion on the side facing the center of the wire hole.

[0009] According to one aspect of the invention, the wire hole is an elliptical hole or an oblong hole.

[0010] According to one aspect of the present invention, the fixing mechanism has two fixing holes; a plurality of connecting posts are provided at the bottom of the partition; the connecting posts correspond one-to-one with the fixing holes; the connecting posts and fixing holes are connected by snap-fit ​​or welding.

[0011] According to one aspect of the present invention, the main circuit board is provided with a plurality of power soldering points along its length.

[0012] According to one aspect of the present invention, the number of fixing holes is two; one of the groups of power soldering points is disposed at the fixing holes; a wiring hole is disposed above the connecting post; a copper plating layer is disposed at the wiring hole; the copper plating layer extends to the connecting post.

[0013] According to one aspect of the invention, the diffusion lens is a cylindrical lens; the cylindrical region of the cylindrical lens faces the main circuit board.

[0014] According to one aspect of the invention, the lampshade has an abutment area in the middle facing the main circuit board.

[0015] Advantages of implementing this invention:

[0016] The partition serves as an isolation element, eliminating the need for separate designs of the inclined bracket and circuit board. The main circuit board can be designed as a single unit, further reducing the size of the dual-color lamp. The diffuser lens can diffuse the light, further improving the anti-color mixing effect. The partition uses the same material as the main circuit board, eliminating the need for mold making and further reducing material costs. A sealing groove is provided on the outer edge of the base. The edge of the lampshade is set in the sealing groove, and a sealing ring or sealant is applied inside the sealing groove. A potting cavity is formed between the outer and inner enclosures, in which potting compound is applied to further reinforce and enhance the sealing effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a dual-color signal light with improved sealing performance according to the present invention;

[0019] Figure 2 This is an exploded view of a dual-color signal light with improved sealing performance according to the present invention;

[0020] Figure 3 This is a schematic diagram of the main circuit board and partition described in this invention;

[0021] Figure 4 An explosion view of the main circuit board and partition described in this invention. Figure 1 ;

[0022] Figure 5 An explosion view of the main circuit board and partition described in this invention. Figure 2 ;

[0023] Figure 6 This is a schematic diagram of the structure of the lampshade described in this invention.

[0024] Figure 7 This is a cross-sectional view of the lampshade described in this invention;

[0025] Figure 8 This is a schematic diagram of the wire harness sealing mechanism described in this invention;

[0026] Figure 9 for Figure 8 A magnified view of the portion indicated by reference numeral I;

[0027] Figure 10 This is an exploded view of the wire harness sealing mechanism described in this invention;

[0028] Figure 11 This is a cross-sectional view of the wire harness sealing mechanism described in this invention. Figure 1 ;

[0029] Figure 12 This is a cross-sectional view of the wire harness sealing mechanism described in this invention. Figure 2 .

[0030] Figure 13 This is a structural cross-sectional view of the wire harness body described in this invention.

[0031] Legend: 1. Base; 11. Sealing groove; 2. Main circuit board; 21. Fixing hole; 22. Light-emitting unit; 23. Power soldering point; 3. Lampshade; 31. Diffuser lens; 32. Connecting buckle; 33. Abutment area; 4. Partition plate; 41. Connecting post; 42. Wiring hole; 5. Wire harness body; 51. Sub-wire core; 6. Wire harness buckle; 61. Wire harness hole; 71. Through hole; 72. Limiter; 721. Support part; 722. Blocking part; 723. Branching protrusion; 73. Outer barrier; 74. Inner barrier; 75. Encapsulation cavity. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, a dual-color signal light with improved sealing includes a base 1, a main circuit board 2, and a lampshade 3. The main circuit board 2 is disposed between the lampshade 3 and the base 1, and also includes a partition 4 and a wiring harness sealing mechanism. The main circuit board 2 includes a fixing mechanism and several light-emitting units 22. The fixing mechanism is disposed in the middle of the main circuit board 2. The lower part of the partition 4 is connected to the main circuit board 2 through the fixing mechanism, and its lower part abuts against the inner side of the lampshade 3. The light-emitting units 22 are symmetrically arranged on both sides of the partition 4. A diffusion lens 31 is provided in the area of ​​the lampshade 3 corresponding to the light-emitting units 22.

[0034] A partition 4 is set in the middle of the main circuit board 2 to serve as an isolation, eliminating the need for a separate design of the inclined bracket and circuit board, reducing assembly difficulty and ensuring quality control. The main circuit board 2 can adopt an integrated design, which can avoid unnecessary flying wire connections, simplify the manufacturing process (avoiding the flying wire soldering process) and improve stability; the diffuser lens 31 can diffuse light and further improve the anti-color mixing effect.

[0035] Furthermore, the partition 4 can be made of the same material as the main circuit board 2, that is, the partition 4 can be made using the substrate of the main circuit board 2 without the need for a separate mold for the partition 4, which can further reduce material costs. The production of the partition 4 can be part of the circuit board production process. The partition 4 can be designed together during the design stage of the main circuit board 2, and the required shape of the partition 4 can be cut out during the circuit board production.

[0036] The wire harness sealing mechanism includes a wire harness body 5, a wire harness buckle 6, and a sealing interface; the sealing interface includes a wire passage hole 71; limiters 72 are symmetrically arranged on both sides of the wire passage hole 71; it also includes an outer perimeter 73, in which the wire passage hole 71 is disposed; the wire harness body 5 includes two sub-cores 51; the shape of the wire harness buckle 6 matches the wire passage hole 71, and a through wire harness hole 61 is provided inside it; the wire harness body 5 is disposed in the wire harness hole 61; the wire harness buckle 6 is press-fitted with the wire passage hole 71 and abuts against the limiters 72; the two sub-cores 51 are respectively located on both sides of the limiters 72 and electrically connected to the main circuit board 2;

[0037] An inner enclosure 74 is provided on the outer edge of the wire hole 71; the height of the outer enclosure 73 is higher than the height of the inner enclosure 74. Furthermore, a limiter 72 is provided on the inner enclosure 74, that is, the limiter 72 and the inner enclosure 74 are an integral structure; at this time, a potting cavity 75 is formed between the outer enclosure 73 and the inner enclosure 74. In practical applications, potting compound can be injected into the potting cavity 75 to further reinforce and enhance the sealing effect; the design of the potting cavity 75 limits the injection area, avoids overflow of compound to other areas, and facilitates precise control of the amount of potting compound used to ensure proper sealing.

[0038] The limiter 72 includes a support part 721 and a blocking part 722. The blocking part 722 is provided with a wire splitting protrusion 723 on the side facing the center of the wire hole 71. The wire splitting protrusion 723 is used to block the two sub-cores 51 to prevent the cores from getting tangled.

[0039] The length and width of the cross-section of the wire hole 71 are not equal. This design ensures that the wire harness buckle 6 and the wire hole 71 will not be misaligned during assembly, avoiding interference between the sub-wire core 51 and the limiter 72. At the same time, it can also play a positioning role, fixing the position of the sub-wire core 51, which is convenient for connection with the vehicle light circuit board.

[0040] In this embodiment, the wire hole 71 is an elliptical hole or an oblong hole. This shape can not only meet the requirement of avoiding misalignment, but also, because its edges and corners are smooth, it is not easy to produce gaps after assembly, resulting in good sealing effect and easy processing.

[0041] In practical applications, the fixing mechanism consists of several fixing holes 21; correspondingly, several connecting posts 41 are provided at the bottom of the partition 4; the connecting posts 41 correspond one-to-one with the fixing holes 21; the connecting posts 41 and the fixing holes 21 are connected by snap-fit ​​or welding.

[0042] Furthermore, the main circuit board 2 has several sets of power soldering points 23 along its length, which facilitates the connection of power supply or the lead-out of power supply lines from various locations, thereby improving its applicability.

[0043] In this embodiment, there are two fixing holes 21; one of the several sets of power soldering points 23 is set at the fixing hole 21, that is, the fixing hole 21 is also the power interface of the main circuit board 2.

[0044] Optionally, the partition 4 can be made of the same material as the substrate of the main circuit board 2, and the fixing hole 21 is also a power interface. A wiring hole 42 can be provided above the connecting post 41, and a copper layer can be provided at the wiring hole 42 (that is, the connecting hole of the partition 4 is designed as a hole pad during the design stage of the main circuit board 2); the copper layer extends to the connecting post 41; furthermore, a power cable can be connected through the partition 4.

[0045] The diffuser lens 31 is a cylindrical lens, used to diffuse the light emitted by the light-emitting units 22 on both sides of the partition 4 to both sides; the cylindrical area of ​​the cylindrical lens faces the main circuit board 2 and has a smooth outer surface; the lampshade 3 has a contact area 33 in the middle facing the main circuit board 2, which is provided at the position corresponding to the partition 4, for contacting the partition 4.

[0046] The lampshade 3 is fixed to the base 1 by a connecting buckle 32; further, a sealing groove 11 is provided on the outer edge of the base 1; the edge of the lampshade 3 is set in the sealing groove 11, and a sealing ring or sealant is applied in the sealing groove 11 to further enhance the sealing performance.

[0047] Example 2

[0048] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, a dual-color signal light with improved sealing includes a base 1, a main circuit board 2, and a lampshade 3. The main circuit board 2 is disposed between the lampshade 3 and the base 1, and also includes a partition 4 and a wiring harness sealing mechanism. The main circuit board 2 includes a fixing mechanism and several light-emitting units 22. The fixing mechanism is disposed in the middle of the main circuit board 2. The lower part of the partition 4 is connected to the main circuit board 2 through the fixing mechanism, and its lower part abuts against the inner side of the lampshade 3. The light-emitting units 22 are symmetrically arranged on both sides of the partition 4. A diffusion lens 31 is provided in the area of ​​the lampshade 3 corresponding to the light-emitting units 22.

[0049] A partition 4 is set in the middle of the main circuit board 2 to serve as an isolation, eliminating the need for a separate design of the inclined bracket and circuit board, reducing assembly difficulty and ensuring quality control. The main circuit board 2 can adopt an integrated design, which can avoid unnecessary flying wire connections, simplify the manufacturing process (avoiding the flying wire soldering process) and improve stability; the diffuser lens 31 can diffuse light and further improve the anti-color mixing effect.

[0050] Furthermore, the partition 4 can be made of the same material as the main circuit board 2, that is, the partition 4 can be made using the substrate of the main circuit board 2 without the need for a separate mold for the partition 4, which can further reduce material costs. The production of the partition 4 can be part of the circuit board production process. The partition 4 can be designed together during the design stage of the main circuit board 2, and the required shape of the partition 4 can be cut out during the circuit board production.

[0051] The wire harness sealing mechanism includes a wire harness body 5, a wire harness buckle 6, and a sealing interface; the sealing interface includes a wire passage hole 71; limiters 72 are symmetrically arranged on both sides of the wire passage hole 71; it also includes an outer perimeter 73, in which the wire passage hole 71 is disposed; the wire harness body 5 includes two sub-cores 51; the shape of the wire harness buckle 6 matches the wire passage hole 71, and a through wire harness hole 61 is provided inside it; the wire harness body 5 is disposed in the wire harness hole 61; the wire harness buckle 6 is press-fitted with the wire passage hole 71 and abuts against the limiters 72; the two sub-cores 51 are respectively located on both sides of the limiters 72 and electrically connected to the main circuit board 2;

[0052] An inner enclosure 74 is provided on the outer edge of the wire hole 71; the height of the outer enclosure 73 is higher than the height of the inner enclosure 74. Furthermore, a limiter 72 is provided on the inner enclosure 74, that is, the limiter 72 and the inner enclosure 74 are an integral structure; at this time, a potting cavity 75 is formed between the outer enclosure 73 and the inner enclosure 74. In practical applications, potting compound can be injected into the potting cavity 75 to further reinforce and enhance the sealing effect; the design of the potting cavity 75 limits the injection area, avoids overflow of compound to other areas, and facilitates precise control of the amount of potting compound used to ensure proper sealing.

[0053] The limiter 72 includes a support part 721 and a blocking part 722. The blocking part 722 is provided with a wire splitting protrusion 723 on the side facing the center of the wire hole 71. The wire splitting protrusion 723 is used to block the two sub-cores 51 to prevent the cores from getting tangled.

[0054] Optionally, the limiters 72 on both sides of the wire hole 71 are an integral structure; two wire grooves are provided in the middle of the connected part of the two limiters 72; the shape of the wire grooves is adapted to the sub-core 51 to avoid damaging the cable insulation and play a role in positioning and protection.

[0055] The length and width of the cross-section of the wire hole 71 are not equal. This design ensures that the wire harness buckle 6 and the wire hole 71 will not be misaligned during assembly, avoiding interference between the sub-wire core 51 and the limiter 72. At the same time, it can also play a positioning role, fixing the position of the sub-wire core 51, which is convenient for connection with the vehicle light circuit board.

[0056] In this embodiment, the wire hole 71 is an elliptical hole or an oblong hole. This shape can not only meet the requirement of avoiding misalignment, but also, because its edges and corners are smooth, it is not easy to produce gaps after assembly, resulting in good sealing effect and easy processing.

[0057] Specifically, the assembly process of the wire harness sealing mechanism generally includes the following steps:

[0058] Step 1: Separate the two sub-cores 51 and remove a portion of the insulation from the ends of the sub-cores 51;

[0059] Step 2: Pass the wire harness body 5 through the wire harness hole 61 and secure it with the wire harness buckle 6;

[0060] Step 3: Pass the wire harness buckle 6 through the wire hole 71, so that the wire harness buckle 6 and the wire hole 71 are interference fit, and the wire harness buckle 6 abuts against the limiter 72. The two sub-cores 51 with part of the insulation removed are located on both sides of the limiter 72. This process can be performed manually or automatically by a mechanism such as a robotic arm.

[0061] In this step, after the wire harness buckle 6 and the wire passage hole 71 are assembled in place, sealant can be used to initially seal the back of the wire passage hole 71 where it contacts the wire harness buckle 6, to prevent the potting compound from seeping out from any gaps and affecting the quality of the finished product. Alternatively, as a substitute for sealant, when injecting the potting compound, a sealing ring can be set at the position where the wire passage hole 71 contacts the wire harness buckle 6. It can be temporarily fixed using assembly fixtures or jigs and removed after the potting compound has dried and solidified. This can achieve a similar effect to sealant without waiting for the sealant to dry and set.

[0062] Step 4: Inject potting compound into the potting cavity 75 until it covers the inner enclosure 74 (some preliminary cleaning operations may be included before injection; drying can be accelerated by heating after injection; a second injection can also be performed as needed to ensure a sealing effect).

[0063] To ensure the stability of the connection, a fixing adhesive (general adhesive) can be provided between the wire harness body 5 and the wire harness hole 61, that is, in addition to the snap-fit, it is also fixed by adhesive bonding to improve the reinforcement and sealing effect; or alternatively, such as Figure 13 As shown, the outer insulation sheath of the wire harness body 5 and the wire harness buckle 6 adopt an integrated structural design. Figure 13 The designation 'a' indicates that the wire harness body 5 (insulation sheath) and the wire harness buckle 6 are integrated into one structure, which can reduce assembly steps and improve efficiency.

[0064] In practical applications, the fixing mechanism consists of several fixing holes 21; correspondingly, several connecting posts 41 are provided at the bottom of the partition 4; the connecting posts 41 correspond one-to-one with the fixing holes 21; the connecting posts 41 and the fixing holes 21 are connected by snap-fit ​​or welding.

[0065] Furthermore, the main circuit board 2 has several sets of power soldering points 23 along its length, which facilitates the connection of power supply or the lead-out of power supply lines from various locations, thereby improving its applicability.

[0066] In this embodiment, there are two fixing holes 21; one of the several sets of power soldering points 23 is set at the fixing hole 21, that is, the fixing hole 21 is also the power interface of the main circuit board 2.

[0067] Optionally, the partition 4 can be made of the same material as the substrate of the main circuit board 2, and the fixing hole 21 is also a power interface. A wiring hole 42 can be provided above the connecting post 41, and a copper layer can be provided at the wiring hole 42 (that is, the connecting hole of the partition 4 is designed as a hole pad during the design stage of the main circuit board 2); the copper layer extends to the connecting post 41; furthermore, a power cable can be connected through the partition 4.

[0068] The diffuser lens 31 is a cylindrical lens, used to diffuse the light emitted by the light-emitting units 22 on both sides of the partition 4 to both sides; the cylindrical area of ​​the cylindrical lens faces the main circuit board 2 and has a smooth outer surface; the lampshade 3 has a contact area 33 in the middle facing the main circuit board 2, which is provided at the position corresponding to the partition 4, for contacting the partition 4.

[0069] The lampshade 3 is fixed to the base 1 by a connecting buckle 32; further, a sealing groove 11 is provided on the outer edge of the base 1; the edge of the lampshade 3 is set in the sealing groove 11, and a sealing ring or sealant is applied in the sealing groove 11 to further enhance the sealing performance.

[0070] Advantages of implementing this invention:

[0071] The partition serves as an isolation element, eliminating the need for separate designs of the inclined bracket and circuit board. The main circuit board can be designed as a single unit, further reducing the size of the dual-color lamp. The diffuser lens can diffuse the light, further improving the anti-color mixing effect. The partition uses the same material as the main circuit board, eliminating the need for mold making and further reducing material costs. A sealing groove is provided on the outer edge of the base. The edge of the lampshade is set in the sealing groove, and a sealing ring or sealant is applied inside the sealing groove. A potting cavity is formed between the outer and inner enclosures, in which potting compound is applied to further reinforce and enhance the sealing effect.

[0072] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A dual-color signal light with improved sealing, comprising a base (1), a main circuit board (2), and a lampshade (3), wherein the main circuit board (2) is disposed between the lampshade (3) and the base (1), characterized in that, It also includes a partition (4) and a wire harness sealing mechanism; the main circuit board (2) includes a fixing mechanism and several light-emitting units (22); the fixing mechanism is located in the middle of the main circuit board (2); the lower part of the partition (4) is connected to the main circuit board (2) through the fixing mechanism, and its lower part abuts against the inner side of the lampshade (3); the light-emitting units (22) are symmetrically arranged on both sides of the partition (4); the area of ​​the lampshade (3) corresponding to the light-emitting unit (22) is provided with a diffusion lens (31); the wire harness sealing mechanism includes a wire harness body (5), a wire harness buckle (6) and a sealing interface; the sealing interface includes a wire through hole (71); Limiters (72) are symmetrically arranged on both sides of the wire passage hole (71); it also includes an outer perimeter (73), and the wire passage hole (71) is disposed in the outer perimeter (73); the wire harness body (5) includes two sub-cores (51); the shape of the wire harness buckle (6) matches the wire passage hole (71), and a through wire harness hole (61) is provided inside it; the wire harness body (5) is disposed in the wire harness hole (61); the wire harness buckle (6) is press-fitted with the wire passage hole (71) and abuts against the limiter (72); the two sub-cores (51) are respectively located on both sides of the limiter (72) and electrically connected to the main circuit board (2).

2. The dual-color signal light with improved sealing according to claim 1, characterized in that, An inner enclosure (74) is provided on the outer edge of the wire hole (71); the height of the outer enclosure (73) is higher than the height of the inner enclosure (74); a limiter (72) is provided on the inner enclosure (74).

3. The dual-color signal light with improved sealing according to claim 2, characterized in that, A filling cavity (75) is formed between the outer perimeter (73) and the inner perimeter (74).

4. The dual-color signal light with improved sealing according to claim 1, characterized in that, The limiter (72) includes a support part (721) and a blocking part (722); the blocking part (722) has a wire splitting protrusion (723) on the side facing the center of the wire hole (71).

5. The dual-color signal light with improved sealing according to claim 1, characterized in that, The wire hole (71) is an elliptical hole or an oblong hole.

6. The dual-color signal light with improved sealing according to claim 1, characterized in that, The fixing mechanism consists of two fixing holes (21); the bottom of the partition (4) is provided with several connecting posts (41); the connecting posts (41) correspond one-to-one with the fixing holes (21); the connecting posts (41) and the fixing holes (21) are connected by snap-fit ​​or welding.

7. The dual-color signal light with improved sealing according to claim 6, characterized in that, The main circuit board (2) has several sets of power soldering points (23) along its length.

8. The dual-color signal light with improved sealing according to claim 7, characterized in that, The number of fixing holes (21) is two; one of the several sets of power soldering points (23) is set at the fixing hole (21); a wiring hole (42) is provided above the connecting post (41); a copper plating layer is provided at the wiring hole (42); the copper plating layer extends to the connecting post (41).

9. The dual-color signal light with improved sealing according to claim 1, characterized in that, The diffusion lens (31) is a cylindrical lens; the cylindrical region of the cylindrical lens faces the main circuit board (2).

10. The dual-color signal light with improved sealing according to claim 1, characterized in that, The lampshade (3) has an abutment area (33) on the side facing the main circuit board (2) in the middle.

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