Automobile dual light source compatible lamp

Abstract

The utility model discloses a kind of car dual light source compatible lamps, belong to automobile lamp technical field。Including circuit board component and plastic shell, circuit board component is fixed on plastic shell by hot riveting mode, circuit board component includes installation part one and installation part two, the side of installation part one is equipped with elastic structure, the side of installation part two is equipped with plug-in part, plug-in part and elastic structure are detachable structure, elastic structure is also used to install traditional bulb light source, installation part two is used to install LED light source;The lamp of the utility model of car dual light source compatibility, in the case where plastic shell is not required to re-open mould, same lamp can be compatible with two light source configuration scheme, effectively reduce production cost and improve assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to an automotive lamp compatible with dual light sources. Background Technology

[0002] In today's automotive industry, to meet the ever-growing personalized demands of consumers, automakers are continuously innovating in vehicle configurations, resulting in a diversified landscape. Taking automotive interior lighting as an example, there are two mainstream light source configurations on the market: traditional incandescent bulbs and modern LED lights. These two light sources differ fundamentally in their light-emitting principles. Traditional incandescent bulbs generate light and heat by heating a tungsten filament with an electric current, while LED lights generate light by releasing energy through electron transitions within semiconductor materials.

[0003] Given the different working principles of these two light sources, their structural designs also differ significantly. Traditional bulbs are snapped onto a metal circuit board and electrically connected via metal springs; while LED light sources require a PCB board for soldering and are connected to the power supply via wires. Traditional metal circuit boards are fixed to the plastic housing using thermal riveting, while the PCB board of LED light sources is fixed inside the plastic housing with screws. These differences in installation methods and electrical connection structures make it difficult for existing lighting fixtures to be compatible with both light sources.

[0004] This diversification of light sources presents challenges for automakers. During production, manufacturers must design specialized luminaire structures for different light source types, increasing design costs and complicating the production process. Each type of luminaire requires independent molds, assembly processes, and quality inspection standards, undoubtedly raising the difficulty of production management. Utility Model Content

[0005] The technical problem to be solved by this utility model is: in order to solve the problem that existing lamps cannot be compatible with traditional bulb light sources and LED light sources, this utility model provides a dual-light source compatible lamp for automobiles. Through optimized structural design, the same lamp can be adapted to two light sources, thereby effectively reducing production costs and improving assembly efficiency.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a dual-light source compatible lamp for automobiles, including a circuit board assembly and a plastic housing. The circuit board assembly is fixed to the plastic housing by thermal riveting. The circuit board assembly includes a mounting part one and a mounting part two. One side of the mounting part one is provided with an elastic structure, and one side of the mounting part two is provided with a connector. The connector and the elastic structure are detachable. The elastic structure is also used to install a traditional light bulb, and the mounting part two is used to install an LED light source. Thus, the circuit board assembly can provide physical support for the installation of two light sources without the need to re-mold the plastic housing. The original mounting structure can be shared, thereby reducing costs and ensuring the commonality of parts, thus improving production efficiency.

[0007] Furthermore, the elastic structure includes two symmetrically arranged support arms. One end of each support arm is connected to the first mounting part, and the end of the connector away from the second mounting part is Y-shaped. The Y-shaped fork of the connector and the other end of the support arm form a snap-fit ​​engagement. Thus, the snap-fit ​​engagement between the connector and the elastic structure enables quick connection and disassembly.

[0008] Furthermore, the Y-shaped fork of the connector is provided with anti-slip texture to enhance the friction during connection and prevent loosening caused by vibration or external force.

[0009] Furthermore, the end of the support arm away from the mounting part one extends toward the mounting part one and forms a latching part. The latching part is located on the inner side of the support arm and is in the shape of an "in". The long side of the latching part is an elastic element one, and the short side of the latching part is an elastic element two. The elastic element one and the elastic element two form a clamping space for fixing the bottom of the traditional light bulb light source, thereby ensuring that the light bulb is stable and reliable during use and is not easy to loosen or fall off.

[0010] Furthermore, the elastic element one of the support arm is arranged opposite to the elastic element two of the other support arm, so that the traditional light bulb light source can be automatically centered and firmly clamped when inserted, which further improves the convenience of installation and the reliability of connection.

[0011] Furthermore, both mounting part one and mounting part two are metal circuit boards; thus, current flows directly through mounting part one to the two poles of a conventional light bulb light source, thereby illuminating it.

[0012] Furthermore, the second mounting part is provided with a PCB board, and the end face of the second mounting part has two protrusions. The two protrusions do not contact each other. The protrusions are matched with positioning holes on the PCB board and fixed by spot welding, thereby forming an electrical connection between the second mounting part and the PCB board. The PCB board integrates an LED light source driving circuit and an LED light source, and the driving circuit is electrically connected to the LED light source. Thus, by connecting the second mounting part to the PCB board, the method of connecting the PCB board to the plastic shell by screws is replaced, avoiding the need to re-mold the plastic shell, saving assembly steps and improving production efficiency.

[0013] Furthermore, resistor one and resistor two are welded onto the mounting part two. Resistor one and resistor two are respectively connected to the current limiting circuit and constant current circuit in the LED light source driving circuit, thereby ensuring that the LED light source can work stably under different voltage environments and avoiding problems such as uneven brightness or shortened lifespan caused by current fluctuations.

[0014] Furthermore, the first resistor is 150Ω and the second resistor is 100Ω; thus, after the current flows from the first mounting part into the second mounting part, it is sequentially current-limited and current-sharing processed through the first resistor (150Ω) and the second resistor (100Ω), and finally drives the LED light source on the PCB to emit light; this design can replace the function of the traditional constant current IC, simplify the circuit structure, and ensure its stable operation.

[0015] Furthermore, both mounting parts one and two are provided with mounting holes, and the plastic housing is provided with rivets. The mounting holes are used to engage with the rivets on the plastic housing for connection. Mounting parts one and two are fixed to the plastic housing by a hot riveting process. This improves the stability of the overall structure and assembly efficiency; at the same time, the hot riveting connection method eliminates the need for additional screws, reducing the number of parts and assembly steps.

[0016] Furthermore, a snap-fit ​​groove is provided on one side of the support arm, which is adapted to the Y-shaped fork, so that the plug and the support arm are connected in a mortise and tenon structure, thereby improving the stability and reliability of the connection.

[0017] The beneficial effects of this utility model are that the automotive dual-light source compatible lamp of this utility model, through the elastic structure and the detachable connection of the mounting part two, allows the plastic housing and mounting part one, which are compatible with traditional bulb light sources, to be installed and replaced with LED light sources without the need to re-mold the plastic housing, greatly improving the product's compatibility and applicability. At the same time, this detachable connection method facilitates maintenance and replacement, reducing usage costs.

[0018] This utility model relates to a dual-light source compatible automotive lamp that uses two resistors instead of a traditional constant current IC to achieve current limiting and current sharing functions for the LED light source, thereby reducing costs and improving circuit reliability. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of an assembly of a dual-light source compatible automotive lamp with a traditional bulb light source.

[0021] Figure 2 yes Figure 1 An exploded view of the overall structure.

[0022] Figure 3 This is a schematic diagram of an assembly of an automotive dual-light source compatible lamp with an LED light source.

[0023] Figure 4 yes Figure 3 An exploded view of the overall structure.

[0024] Figure 5 This is a structural diagram of the assembly of the elastic structure and the mounting part.

[0025] Figure 6 This is a schematic diagram of an elastic structure.

[0026] Figure 7 This is a structural diagram of the assembly of the support arm and the connector.

[0027] Figure 8 This is a schematic diagram of the installation of an existing LED as a light source with a plastic housing.

[0028] In the diagram: 1. Plastic housing; 2. Mounting part one; 21. Elastic structure; 211. Support arm; 2111. Elastic component one; 2112. Elastic component two; 22. Traditional light bulb light source; 3. Mounting part two; 301. Connector; 3011. Inner branch; 3012. Outer branch; 31. PCB board; 32. Resistor one; 33. Resistor two. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0030] Depending on the configuration, similar lamps can be installed with either traditional bulbs or LEDs. In existing production methods, to accelerate production efficiency, when using the LED solution, the original metal circuit board is usually completely replaced by a PCB board. However, referring to... Figure 8Currently, LEDs are mounted by screwing them directly onto the PCB board and securing them to the housing with screws, without any rivets on the housing for fixation. Traditional bulbs, however, require rivets on the housing to secure the metal circuit board. This necessitates different housing designs for each mounting method, resulting in inconsistent housing structures and a lack of universal compatibility. To address the incompatibility between traditional bulbs and LED light sources, the increased cost of redesigning molds, and the loss of component interchangeability, the following solution is proposed:

[0031] Example 1:

[0032] like Figures 1-7 The diagram shows the preferred embodiment of this utility model, an automotive dual-light source compatible lamp, including a circuit board assembly and a plastic housing 1. The circuit board assembly is fixed to the plastic housing 1 by thermal riveting. The circuit board assembly includes a mounting part 2 and a mounting part 3, both of which are metal circuit boards. One side of the mounting part 2 is provided with an elastic structure 21, which includes two symmetrically arranged support arms 211. One end of the support arms 211 is connected to the mounting part 2. One side of the mounting part 3 is provided with a connector 301, which is detachable from the support arms 211. The elastic structure 21 is also used to install a traditional bulb light source 22, and the mounting part 3 is used to install an LED light source. Thus, the circuit board assembly can provide physical support for the installation of two light sources without requiring the plastic housing 1 to be remolded, and the original mounting structure can be shared, thereby reducing costs and ensuring the versatility of components.

[0033] in:

[0034] In traditional light bulb-based light source solutions:

[0035] Reference Figures 1-2 , Figure 6 The end of the support arm 211 away from the mounting part 2 extends toward the mounting part 2 and forms a latching part. The latching part is located on the inner side of the support arm 211 and is in the shape of an "in". The long side of the latching part is an elastic element 2111 and the short side of the latching part is an elastic element 2112. A clamping space is formed between the elastic element 2111 and the elastic element 2112. A conductive contact piece is provided on the side wall of the support arm 211. The conductive contact piece is located in the clamping space and is in contact with the bottom electrode of the conventional bulb light source 22.

[0036] Reference Figure 6 The elastic element 1 2111 of the support arm 211 is arranged opposite to the elastic element 2112 of the other support arm 211, so that the conventional bulb light source 22 can be automatically centered and firmly clamped when inserted, further improving the convenience of installation and the reliability of connection.

[0037] In solutions where LEDs are used as the light source:

[0038] Reference Figure 3 , Figures 5-7 The connector 301 has an inner branch 3011 and an outer branch 3012 at the end furthest from the mounting part 211. The inner branch 3011 and the outer branch 3012 extend outward in the same direction, forming an opening groove between them. The end face of the inner branch 3011 is parallel to the side wall of the support arm 211, and a conductive contact surface is provided between the inner branch 3011 and the support arm 211 to achieve electrical connection between the mounting part 1 and the mounting part 2. The end face of the outer branch 3012 is perpendicular to the side wall of the support arm 211, that is, the outer branch 3012 is bent at a right angle to the inner branch 3011, forming a snap-fit ​​structure, so that the connector 301 and the elastic structure 21 have a stable mechanical connection and electrical conduction function in the plugged state. The inner side of the outer branch 3012 is provided with anti-slip texture to enhance the friction during snap-fit ​​and ensure a stable and reliable connection.

[0039] The mounting part 2 3 is provided with a PCB board 31. The end face of the mounting part 2 3 has two protrusions. The two protrusions do not contact each other. The protrusions are matched with the positioning holes on the PCB board and fixed by spot welding, so that the mounting part 2 3 and the PCB board are electrically connected. The PCB board integrates an LED light source driving circuit and an LED light source. The driving circuit is electrically connected to the LED light source. Thus, the connection between the mounting part 2 3 and the PCB board replaces the connection between the PCB board 31 and the plastic shell 1 by screws, avoiding the need to re-mold the plastic shell 1, saving assembly steps and improving production efficiency.

[0040] Example 2: Based on Example 1, the following is added:

[0041] Reference Figure 5 Resistor 32 and resistor 33 are soldered onto mounting part 2 3. Resistor 32 has a current of 150Ω and resistor 33 has a current of 100Ω. Resistor 32, resistor 33 and PCB board 31 are connected in series. Resistor 32 and resistor 33 form a current limiting voltage divider circuit to adapt to LED light source modules of different voltage levels, so that the lamp can work stably under different input voltages. The resistance values ​​of resistor 32 and resistor 33 can be adjusted according to the power of LED light source to achieve constant current control of LED light source, improve the lifespan and luminous efficiency of light source. Thus, after the current flows from mounting part 2 into mounting part 2 3, it is sequentially current limited and current shared by resistor 32 and resistor 33, and finally drives the LED light source on PCB board 31 to emit light. This design can replace the function of traditional constant current IC, simplify the circuit structure and ensure its stable operation.

[0042] Example 3: Based on Example 1, a further improvement is made. A snap-fit ​​groove is provided on one side of the support arm 211. The snap-fit ​​groove is matched with the opening groove, so that the connecting part of the inner branch 3011 and the outer branch 3012 enters the snap-fit ​​groove. That is, the plug-in 301 and the support arm 211 are connected in a mortise and tenon structure, thereby improving the stability and reliability of the connection. At this time, the conductive contact point between the inner branch 3011 and the support arm 211 is moved accordingly.

[0043] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A dual-light source compatible lamp for automobiles, characterized in that: The device includes a circuit board assembly and a plastic housing (1). The circuit board assembly is fixedly connected to the plastic housing (1). The circuit board assembly includes a mounting part one (2) and a mounting part two (3). One side of the mounting part one (2) is provided with an elastic structure (21), and one side of the mounting part two (3) is provided with a connector (301). The connector (301) and the elastic structure (21) are detachable. The elastic structure (21) is also used to install a conventional light bulb light source (22), and the mounting part two (3) is used to install an LED light source.

2. The automotive dual-light source compatible lamp as described in claim 1, characterized in that: The elastic structure (21) includes two symmetrically arranged support arms (211). One end of the support arm (211) is connected to the first mounting part (2). The end of the plug (301) away from the second mounting part (3) is Y-shaped. The Y-shaped fork of the plug (301) and the other end of the support arm (211) form a snap-fit ​​engagement.

3. The automotive dual-light source compatible lamp as described in claim 2, characterized in that: The Y-shaped fork of the connector (301) has anti-slip texture on the inner side.

4. The automotive dual-light source compatible lamp as described in claim 2, characterized in that: The end of the support arm (211) away from the mounting part (2) extends toward the mounting part (2) and forms a latching part. The latching part is located on the inner side of the support arm (211) and is in the shape of an "in". The long side of the buckle is elastic element one (2111), and the short side of the buckle is elastic element two (2112). The elastic element one (2111) and elastic element two (2112) form a clamping space for fixing the bottom of the conventional bulb light source (22).

5. The automotive dual-light source compatible lamp as described in claim 4, characterized in that: The elastic element one (2111) of the support arm (211) is arranged opposite to the elastic element two (2112) of the other support arm (211).

6. The automotive dual-light source compatible lamp as described in claim 1, characterized in that: Both mounting part one (2) and mounting part two (3) are metal circuit boards, and both mounting part one (2) and mounting part two (3) are fixed to the plastic shell (1) by heat riveting.

7. The automotive dual-light source compatible lamp as described in claim 6, characterized in that: The mounting part 2 (3) is provided with a PCB board (31). The end face of the mounting part 2 (3) is provided with two protrusions (302). The two protrusions (302) do not contact each other. The protrusions (302) are matched with the positioning holes on the PCB board (31) and fixed by spot welding, so that the mounting part 2 (3) and the PCB board (31) are electrically connected. The PCB board (31) is integrated with an LED light source driving circuit and an LED light source. The driving circuit is electrically connected to the LED light source.

8. The automotive dual-light source compatible lamp as described in claim 1, characterized in that: Resistor 1 (32) and resistor 2 (33) are welded onto the mounting part 2 (3). Resistor 1 (32) and resistor 2 (33) are used to realize the current limiting and current equalization functions of the LED light source.

9. The automotive dual-light source compatible lamp as described in claim 2, characterized in that: The support arm (211) has a snap-fit ​​groove on one side, which is adapted to the Y-shaped fork of the connector (301), so that the connector (301) and the support arm (211) are connected in a mortise and tenon structure.

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