Waterproof circuit board of automobile floor lighting lamp

Abstract

The utility model belongs to the technical field of circuit boards, and particularly relates to a waterproof automobile floor lamp circuit board which comprises a circuit board body and further comprises a waterproof bottom shell, an installation cavity used for installing the circuit board body is formed in the waterproof bottom shell, and a rubber sealing ring is fixed to the top end of the waterproof bottom shell in an adhering mode. The waterproof top cover is fixed at the top end of the waterproof bottom shell, and a ventilation opening is formed in the waterproof top cover; the waterproof breathable film is detachably installed at the position, corresponding to the ventilation opening, of the waterproof top cover; according to the utility model, the waterproof bottom shell and the waterproof top cover are arranged for safety protection, the sealing performance of the connection of the waterproof bottom shell and the waterproof top cover is improved through the rubber sealing ring, water vapor is prevented from entering the waterproof bottom shell to influence the working safety of the circuit board body, and the waterproof breathable film has waterproof and breathable effects; the waterproof function is achieved, ventilation and heat dissipation of the circuit board body are facilitated, and the working safety and working performance of the circuit board body are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit boards, and in particular relates to a waterproof automobile floor lamp circuit board. Background Art

[0002] Car ground lights are a type of lighting device installed at the bottom of a vehicle, commonly known as underground lights or ground lights. They use LED or xenon bulbs to illuminate the ground or road below the vehicle and provide lighting for the vehicle. At night or in low-light conditions, car ground lights can improve the visibility of the vehicle, help the driver find road obstacles more easily, and make the vehicle more eye-catching. At night, they can illuminate the ground and warn oncoming vehicles and pedestrians. A controller is required for the use of car ground lights, which contains a circuit board for controlling the operation of the ground lights.

[0003] At present, in order to prevent external water vapor from entering the controller and affecting the safety of the circuit board, sealing measures are usually set for the controller, such as adding a rubber sealing ring.

[0004] However, in actual use, simply adding a rubber sealing ring will inevitably affect the ventilation and heat dissipation effect of the circuit board, thereby reducing the working performance of the circuit board.

[0005] In order to solve the above problems, the present application proposes a waterproof automobile ground lamp circuit board. Utility Model Content

[0006] In order to solve the above problems existing in the prior art, the utility model provides a waterproof automobile ground lamp circuit board, which has the characteristics of easy use, good waterproof effect and easy heat dissipation.

[0007] To achieve the above purpose, the utility model provides the following technical solutions: a waterproof automobile ground lamp circuit board, including a circuit board body, and also including:

[0008] A waterproof bottom shell, wherein a fixing foot is fixed on the outer wall of the waterproof bottom shell, and the waterproof bottom shell has an installation cavity for installing the circuit board body, and a rubber sealing ring is bonded and fixed on the top of the waterproof bottom shell;

[0009] A waterproof top cover, which is fixed to the top of the waterproof bottom shell and has a vent;

[0010] A waterproof breathable membrane is detachably mounted on the waterproof top cover at a position corresponding to the breathable opening.

[0011] As a preferred technical solution of the utility model, it also includes:

[0012] A first magnetic sheet has a mounting groove at a position corresponding to the air vent on the waterproof top cover, and the first magnetic sheet is bonded and fixed in the mounting groove;

[0013] A second magnetic sheet is bonded and fixed to the bottom surface of the waterproof breathable membrane and is attracted to the first magnetic sheet.

[0014] As a preferred technical solution of the utility model, it also includes:

[0015] A metal heat-conducting plate is fixed to the inner bottom surface of the mounting cavity, and the bottom surface of the circuit board body is in contact with the metal heat-conducting plate.

[0016] As a preferred technical solution of the utility model, the metal heat conducting plate comprises:

[0017] An upper heat-conducting plate, the bottom surface of the circuit board body being in contact with the upper heat-conducting plate;

[0018] A lower heat conducting plate, the lower heat conducting plate being fixed to the inner bottom surface of the mounting cavity;

[0019] Fins, a plurality of fins are fixed between the upper heat conducting plate and the lower heat conducting plate at equal intervals, and a plurality of ventilation channels are formed by the plurality of fins.

[0020] As a preferred technical solution of the present invention, the upper heat conducting plate, the lower heat conducting plate and the fins are integral components formed by casting.

[0021] As a preferred technical solution of the utility model, the upper heat conducting plate, the lower heat conducting plate and the fins are all made of copper plates, aluminum plates or stainless steel plates.

[0022] As a preferred technical solution of the utility model, the circuit board body is fixed in the installation cavity by bolts, the waterproof top cover is fixed to the top of the waterproof bottom shell by bolts, and the metal heat conductive plate is bonded and fixed to the inner bottom surface of the installation cavity.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] In the utility model, safety protection is provided by providing a waterproof bottom shell and a waterproof top cover, and the sealing performance of the connection between the waterproof bottom shell and the waterproof top cover is improved by a rubber sealing ring, so as to prevent water vapor from entering the waterproof bottom shell and affecting the safety of the circuit board body. The waterproof breathable membrane has a waterproof and breathable effect, and while being waterproof, it is convenient for the circuit board body to ventilate and dissipate heat, thereby ensuring the safety and working performance of the circuit board body.

[0025] Other additional advantages and beneficial effects of the present application will be given in part in the following description, and in part will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a structural schematic diagram of the utility model;

[0028] Figure 2 For this utility model Figure 1 A is an enlarged structural diagram;

[0029] Figure 3 This is a schematic diagram of the axonometric structure of the waterproof bottom shell in the utility model;

[0030] Figure 4 It is a schematic diagram of the axonometric structure of the metal heat conducting plate in the utility model.

[0031] In the figure: 1. Circuit board body; 2. Waterproof bottom shell; 21. Fixed feet; 22. Installation cavity; 23. Rubber sealing ring; 3. Waterproof top cover; 31. Ventilation port; 32. Installation slot; 33. No. 1 magnetic sheet; 4. Waterproof breathable membrane; 41. No. 2 magnetic sheet; 5. Metal heat conduction plate; 51. Upper heat conduction plate; 52. Lower heat conduction plate; 53. Fins; 531. Ventilation channel. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1-Figure 4 The utility model provides the following technical solutions: a waterproof automobile floor lamp circuit board, including a circuit board body 1, and also includes: a waterproof bottom shell 2, a waterproof top cover 3 and a waterproof breathable membrane 4.

[0034] Further, by Figure 1 and Figure 2As shown, in this embodiment, a fixing foot 21 is fixed on the outer wall of the waterproof bottom shell 2, and a mounting cavity 22 for mounting the circuit board body 1 is provided on the waterproof bottom shell 2, a rubber sealing ring 23 is bonded and fixed on the top of the waterproof bottom shell 2, a waterproof top cover 3 is fixed to the top of the waterproof bottom shell 2, and a vent 31 is provided on the waterproof top cover 3, and a waterproof breathable membrane 4 is detachably mounted on the waterproof top cover 3 at a position corresponding to the vent 31. After adopting the above scheme, when in use, the circuit board body 1 is mounted in the mounting cavity 22, and the waterproof top cover 3 is fixed to the top of the waterproof bottom shell 2, and safety protection is performed by the arranged waterproof bottom shell 2 and waterproof top cover 3, and the sealing performance of the connection between the waterproof bottom shell 2 and the waterproof top cover 3 is improved by the rubber sealing ring 23, so as to prevent water vapor from entering the waterproof bottom shell 2 and affecting the safety of the circuit board body 1 at work, and the waterproof breathable membrane 4 has a waterproof and breathable effect, which facilitates the ventilation and heat dissipation of the circuit board body 1 while being waterproof, thereby ensuring the safety and working performance of the circuit board body 1 at work.

[0035] Optionally, by Figure 1 and Figure 2 As shown, in this embodiment, it also includes: a No. 1 magnetic sheet 33 and a No. 2 magnetic sheet 41. A mounting groove 32 is provided at a position corresponding to the air vent 31 on the waterproof top cover 3. The No. 1 magnetic sheet 33 is bonded and fixed in the mounting groove 32. The No. 2 magnetic sheet 41 is bonded and fixed to the bottom surface of the waterproof breathable membrane 4 and is attracted to the No. 1 magnetic sheet 33. After adopting the above scheme, the waterproof breathable membrane 4 is magnetically installed, which is easy to install and also convenient for disassembly, cleaning and replacement of the waterproof breathable membrane 4.

[0036] It should be noted that the above scheme is only a preferred implementation scheme of the present invention and is not used to limit the present invention. In actual use, the waterproof breathable membrane 4 can also be installed in other conventional directions, such as fixed by glue or bolts.

[0037] Preferably, by Figure 1 and Figure 3 As shown, in this embodiment, it also includes: a metal heat conducting plate 5, the metal heat conducting plate 5 is fixed to the inner bottom surface of the installation cavity 22, and the bottom surface of the circuit board body 1 is attached to the metal heat conducting plate 5. After adopting the above scheme, through the set metal heat conducting plate 5, the heat generated by the circuit board body 1 can be conducted to the metal heat conducting plate 5, and then conducted to the waterproof bottom shell 2 through the metal heat conducting plate 5, thereby further improving the heat dissipation effect.

[0038] Preferably, by Figure 1 , Figure 3 and Figure 4As shown, in this embodiment, the metal heat conducting plate 5 includes: an upper heat conducting plate 51, a lower heat conducting plate 52 and fins 53. The bottom surface of the circuit board body 1 is in contact with the upper heat conducting plate 51, and the lower heat conducting plate 52 is fixed to the inner bottom surface of the mounting cavity 22. A plurality of fins 53 are fixed at equal intervals between the upper heat conducting plate 51 and the lower heat conducting plate 52, and a plurality of fins 53 are spaced apart to form a plurality of ventilation channels 531. After adopting the above scheme, the upper heat conducting plate 51 absorbs the heat generated by the circuit board body 1 and conducts it to the lower heat conducting plate 52 through the plurality of fins 53. The plurality of ventilation channels 531 facilitate airflow conduction, and the heat dissipation efficiency is higher.

[0039] Preferably, by Figure 1 , Figure 3 and Figure 4 As shown, in this embodiment, the upper heat conducting plate 51, the lower heat conducting plate 52 and the fins 53 are integral components formed by casting, and have high structural strength.

[0040] It should be noted that the above scheme is only a preferred implementation scheme of the present invention and is not used to limit the present invention. In actual use, the upper heat conducting plate 51, the lower heat conducting plate 52 and the fins 53 can also be fixed together in other conventional ways, such as by welding or bolting.

[0041] Optionally, by Figure 1 , Figure 3 and Figure 4 As shown, in this embodiment, the upper heat conducting plate 51, the lower heat conducting plate 52 and the fins 53 are all made of copper plates, aluminum plates or stainless steel plates. The appropriate material is selected according to actual usage requirements. For example, the copper plate not only has good thermal conductivity but also has anti-corrosion properties, but its cost is relatively high and its strength is not as good as that of the aluminum plate or the stainless steel plate.

[0042] Optionally, by Figure 1 and Figure 2 As shown, in this embodiment, the circuit board body 1 is fixed in the installation cavity 22 by bolts, the waterproof top cover 3 is fixed to the top of the waterproof bottom shell 2 by bolts, and the metal heat conductive plate 5 is bonded and fixed to the inner bottom surface of the installation cavity 22. The threaded holes at various positions are shown in the drawings. Fixing by bolts is more convenient and can ensure sufficient stability.

[0043] Components not described in detail herein are prior art.

[0044] Working principle and use process of the utility model: When the circuit board body 1 of the utility model is in use, the circuit board body 1 is installed in the installation cavity 22, and the waterproof top cover 3 is fixed to the top of the waterproof bottom shell 2;

[0045] The waterproof bottom shell 2 and the waterproof top cover 3 are provided for safety protection, and the rubber sealing ring 23 is used to improve the sealing of the connection between the waterproof bottom shell 2 and the waterproof top cover 3, so as to prevent water vapor from entering the waterproof bottom shell 2 and affecting the safety of the circuit board body 1. The waterproof breathable membrane 4 has a waterproof and breathable effect, which facilitates the ventilation and heat dissipation of the circuit board body 1 while being waterproof, thereby ensuring the safety and working performance of the circuit board body 1.

[0046] The metal heat conducting plate 5 is fixed to the inner bottom surface of the mounting cavity 22. The upper heat conducting plate 51 absorbs the heat generated by the circuit board body 1 and conducts it to the lower heat conducting plate 52 through a plurality of fins 53. A plurality of ventilation channels 531 facilitate air flow and improve heat dissipation efficiency.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A waterproof automobile ground light circuit board, comprising a circuit board body (1), characterized in that: Also includes: A waterproof bottom shell (2), wherein a fixing foot (21) is fixed on the outer wall of the waterproof bottom shell (2), and the waterproof bottom shell (2) has a mounting cavity (22) for mounting the circuit board body (1), and a rubber sealing ring (23) is bonded and fixed to the top of the waterproof bottom shell (2); A waterproof top cover (3), the waterproof top cover (3) is fixed to the top end of the waterproof bottom shell (2), and a vent (31) is provided on the waterproof top cover (3); A waterproof breathable membrane (4), wherein the waterproof breathable membrane (4) is detachably mounted on the waterproof top cover (3) at a position corresponding to the breathable opening (31).

2. A waterproof automobile ground light circuit board according to claim 1, characterized in that: Also includes: A first magnetic attraction sheet (33), having a mounting groove (32) at a position corresponding to the vent (31) on the waterproof top cover (3), and the first magnetic attraction sheet (33) is bonded and fixed in the mounting groove (32); A second magnetic attraction sheet (41), wherein the second magnetic attraction sheet (41) is bonded and fixed to the bottom surface of the waterproof breathable membrane (4) and is attracted to the first magnetic attraction sheet (33).

3. The waterproof automobile ground light circuit board according to claim 1, characterized in that: Also includes: A metal heat-conducting plate (5), the metal heat-conducting plate (5) is fixed to the inner bottom surface of the installation cavity (22), and the bottom surface of the circuit board body (1) is in contact with the metal heat-conducting plate (5).

4. A waterproof automobile ground light circuit board according to claim 3, characterized in that: The metal heat conducting plate (5) comprises: An upper heat conducting plate (51), the bottom surface of the circuit board body (1) being in contact with the upper heat conducting plate (51); A lower heat conducting plate (52), the lower heat conducting plate (52) being fixed to the inner bottom surface of the mounting cavity (22); Fins (53), wherein a plurality of the fins (53) are fixed at equal intervals between the upper heat conducting plate (51) and the lower heat conducting plate (52), and a plurality of air passages (531) are formed by spacing the plurality of fins (53).

5. A waterproof automobile ground light circuit board according to claim 4, characterized in that: The upper heat conducting plate (51), the lower heat conducting plate (52) and the fins (53) are integral components formed by casting.

6. A waterproof automobile ground light circuit board according to claim 5, characterized in that: The upper heat conducting plate (51), the lower heat conducting plate (52) and the fins (53) are all made of one of copper plates, aluminum plates or stainless steel plates.

7. The waterproof automobile ground light circuit board according to claim 3, characterized in that: The circuit board body (1) is fixed in the installation cavity (22) by means of bolts, the waterproof top cover (3) is fixed to the top of the waterproof bottom shell (2) by means of bolts, and the metal heat conducting plate (5) is bonded and fixed to the inner bottom surface of the installation cavity (22).

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