Heat dissipation device for car lamp

Abstract

The utility model relates to the technical field of car lamps, in particular to a radiating device for a car lamp, which comprises a lamp shell, shell radiating fins arranged on the side wall of the lamp shell, a bottom heat conducting fin arranged at the lower end of the lamp shell, a mounting base arranged below the lamp shell, a mounting plate arranged on the lamp shell and an LED car lamp group arranged at the front end of the lamp shell. Side heat dissipation holes and back air guide holes are formed in the shell heat dissipation fins, a heat removal cover is arranged on the shell heat dissipation fins, a heat removal fan is arranged in the heat removal cover, a side flow opening is formed in the mounting plate, a flow guide coating is arranged in the side flow opening, a bearing strip is arranged on the bottom heat conduction fin, and an upper protection net and a lower protection net are arranged on the heat removal cover. The heat dissipation performance of the LED vehicle lamp set for ambient lighting at the front end of the off-road vehicle is improved, the heat dissipation performance of the side heat dissipation holes for effective and smooth circulation and discharge of vertical airflow accumulated on the shell heat dissipation fins is improved, and the bearing stability of the bearing strips between the lamp shell and the mounting base is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to a heat dissipation device for automotive lighting. Background Technology

[0002] An off-road vehicle is a car specifically designed for off-road driving, mainly used for driving on rough and uneven terrain. When using an off-road vehicle at night, LED lights are usually installed on the roof of the vehicle to illuminate the environment in front of the vehicle.

[0003] To improve the lighting effect on the driving environment in front of off-road vehicles, a group of multiple LED lights are usually installed horizontally side by side on the roof of the off-road vehicle, which is the LED headlight assembly for the front ambient lighting of the off-road vehicle.

[0004] When the LED headlight assembly for the front ambient lighting of an off-road vehicle is powered on, it generates a lot of heat. However, the existing LED headlight assembly for the front ambient lighting of off-road vehicles has poor heat dissipation, which causes most of the heat to accumulate inside the LED headlight housing and cannot be effectively dissipated. This heat accumulation inside the housing for a long time will cause the bulb and other electronic components inside the housing to age or even be damaged.

[0005] Therefore, a heat dissipation device for LED headlights used for front ambient lighting in off-road vehicles is needed to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a heat dissipation device for vehicle lights.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] Design a heat dissipation device for vehicle lights, including a lamp housing, a heat sink provided on the side wall of the lamp housing, a bottom heat conduction plate provided at the lower end of the lamp housing, a mounting base provided at the bottom of the lamp housing, bolts provided on the mounting base, a mounting plate provided on the lamp housing, an LED vehicle light assembly provided at the front end of the lamp housing, side heat dissipation holes and back air vents provided on the heat sink, a heat dissipation cover provided on the heat sink, and a heat dissipation fan provided in the heat dissipation cover;

[0009] The mounting plate has a side flow opening, and the side flow opening is provided with a flow guiding coating.

[0010] The bottom heat-conducting plate is provided with a support strip, and the heat dissipation cover is provided with an upper protective net and a lower protective net.

[0011] Furthermore, the heat sink has a U-shaped cross-section with seven vertically arranged vents, the back vents have four horizontally arranged vents that vertically penetrate the heat sink, and the heat exhaust cover has four horizontally arranged vents that are longitudinally aligned with the LED headlight assembly.

[0012] Furthermore, the side heat dissipation holes vertically penetrate the heat sink and are vertically aligned with the side flow openings; the bottom heat conduction plates consist of nineteen horizontally arranged plates; and the support strip is an overall trapezoidal long strip structure located at the lower end of the bottom heat conduction plates.

[0013] Furthermore, the interior of the heat exhaust shroud is a hollow cavity and is vertically aligned with the back air guide hole, and the heat exhaust fan is disposed inside the hollow cavity of the heat exhaust shroud.

[0014] Furthermore, the upper protective net is disposed at the top of the heat exhaust hood, and the lower protective net is disposed at the bottom of the heat exhaust hood.

[0015] Furthermore, there are four bolts arranged symmetrically, and the bolts are respectively used to vertically mount the plate and the mounting base.

[0016] Furthermore, the flow-guiding coating is uniformly applied along the inner wall of the side flow opening, and the flow-guiding coating is a PTFE polytetrafluoroethylene coating with a thickness of eighty to ninety micrometers.

[0017] The heat dissipation device for vehicle lights proposed in this utility model has the following advantages:

[0018] 1. This utility model, through the setting of a bottom heat-conducting plate and a shell heat sink, and the opening of side heat dissipation holes and back air vents on the shell heat sink, and the setting of a vertical exhaust structure on the shell heat sink, not only achieves rapid heat conduction at the bottom and rapid upward exhaust through the back air vents when the LED vehicle light assembly generates heat during operation, but also achieves rapid heat conduction on the entire outer wall of the lamp housing body and comprehensive and effective rapid exhaust through the side heat dissipation holes and the back air vents, thus improving the overall heat dissipation of the LED vehicle light assembly used for front ambient lighting of off-road vehicles.

[0019] 2. This utility model improves the heat dissipation performance of the side heat dissipation holes by setting an installation plate with side flow openings and setting a flow guiding coating structure in the side flow openings, thereby facilitating the smooth vertical airflow to dissipate heat accumulated on the heat sink.

[0020] 3. This utility model greatly improves the support stability between the lamp housing and the mounting base by setting a trapezoidal support strip structure on the bottom heat-conducting sheet. Attached Figure Description

[0021] Figure 1 This is a first-view perspective perspective view of the overall structure of this utility model;

[0022] Figure 2 This is a second-view perspective perspective view of the overall structure of this utility model;

[0023] Figure 3 For the present utility model Figure 1 Enlarged view of a section at point M;

[0024] Figure 4 This is a side view of the overall structure of this utility model;

[0025] Figure 5 This is a top view of the overall structure of this utility model.

[0026] In the diagram: 1. Lamp housing; 11. LED headlight assembly; 2. Mounting base; 21. Bolt; 3. Bottom heat-conducting sheet; 31. Support strip; 4. Mounting plate; 41. Side airflow opening; 42. Airflow guiding coating; 5. Heat sink; 51. Side heat dissipation hole; 6. Exhaust cover; 61. Upper protective mesh; 62. Lower protective mesh; 63. Exhaust fan; 7. Back air vent. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figure 1-5 A heat dissipation device for vehicle lights includes a lamp housing 1, a heat sink 5 on the side wall of the lamp housing 1, a bottom heat conduction plate 3 at the lower end of the lamp housing 1, a mounting base 2 at the bottom of the lamp housing 1, bolts 21 on the mounting base 2, a mounting plate 4 on the lamp housing 1, an LED vehicle light assembly 11 at the front end of the lamp housing 1, side heat dissipation holes 51 and back air vents 7 on the heat sink 5, a heat exhaust cover 6 on the heat sink 5, and a heat exhaust fan 63 in the heat exhaust cover 6.

[0029] The mounting plate 4 has a side flow opening 41, and the side flow opening 41 has a flow guiding coating 42 inside it.

[0030] The bottom heat-conducting sheet 3 is provided with a support strip 31, and the heat dissipation cover 6 is provided with an upper protective net 61 and a lower protective net 62. Some of the structures described in this patent are common structures of the LED vehicle light group 11 for front ambient lighting on the top of the off-road vehicle, which are existing technologies. Some existing structures are not drawn or marked, so there is no need to elaborate.

[0031] Both the bottom heat-conducting plate 3 and the shell heat sink 5 are made of red copper.

[0032] The heat sink 5 has a U-shaped cross-section with seven vertically arranged vents. The back vents 7 have four horizontally arranged vents that vertically penetrate the heat sink 5. The heat dissipation cover 6 has four horizontally arranged vents that are vertically aligned with the LED headlight assembly 11. The U-shaped heat sink 5, combined with the back vents 7 and the side heat dissipation holes 51, achieves comprehensive and effective heat conduction and heat dissipation for the headlight housing 1.

[0033] The side heat dissipation holes 51 vertically penetrate the heat sink 5 and are vertically aligned with the side flow opening 41. The bottom heat conduction plates 3 consist of nineteen horizontally arranged plates. The support strip 31 is a trapezoidal long strip structure and is located at the lower end of the bottom heat conduction plate 3. The support strip 31 is made of hard alloy steel and its strength does not deform.

[0034] The interior of the heat dissipation shroud 6 is a hollow cavity and is vertically aligned with the back air guide hole 7. The heat dissipation fan 63 is located inside the hollow cavity of the heat dissipation shroud 6. The heat dissipation fan 63 is a powerful, quiet axial flow fan that is durable.

[0035] The upper protective net 61 is located at the top of the heat dissipation shroud 6, and the lower protective net 62 is located at the bottom of the heat dissipation shroud 6. The inner core of both the upper protective net 61 and the lower protective net 62 is made of non-woven fabric, which is waterproof and dustproof, preventing external dust particles from entering the heat dissipation fan 63.

[0036] There are four bolts 21 arranged symmetrically. The bolts 21 are vertically mounted on the mounting plate 4 and the mounting base 2, which improves the overall stability of the mounting base 2, the mounting plate 4, and the lamp housing 1 on the roof of the off-road vehicle. In addition, the mounting plate 4 is stably welded and fixed to the lamp housing 1.

[0037] The flow guiding coating 42 is uniformly applied along the inner wall of the side flow opening 41. The flow guiding coating 42 is a PTFE polytetrafluoroethylene coating with a thickness of 80 to 90 micrometers. The PTFE polytetrafluoroethylene coating has an extremely low coefficient of friction, which can significantly reduce airflow resistance. The cold airflow from the outside will flow smoothly into the side flow opening 41.

[0038] Operating mode: When using the LED headlight assembly 11, the heat dissipation fan 63 can be started by powering on. The heat generated by the LED headlight assembly 11 will be quickly transferred to the heat sink 5 through the aluminum alloy headlight housing 1 and accumulate in the back air vent 7. At this time, the activated heat dissipation fan 63 will generate a strong suction force from bottom to top in the back air vent 7, which can quickly draw away the heat accumulated in the back air vent 7. At the same time, the side airflow will also enter the side heat dissipation hole 51 through the side flow opening 41, exchange some of the heat accumulated in the side heat dissipation hole 51 and form a hot airflow. The hot airflow can be quickly discharged by flowing upward. At the same time, some heat will also be transferred to the bottom heat conduction plate 3 for accumulation. When the off-road vehicle is driving, the front airflow will enter between each bottom heat conduction plate 3, and then blow the accumulated heat to the back end and carry it to the bottom of the back air vent 7. Then it will be drawn away vertically upward by the heat dissipation fan 63 for heat dissipation and discharge. Overall, the heat dissipation of the LED headlight assembly 11 used for front ambient lighting of off-road vehicles is improved.

[0039] Furthermore, by setting a mounting plate 4 with a side flow opening 41 and setting a flow guide coating 42 structure in the side flow opening 41, the flow guide coating 42 has an extremely low coefficient of friction, which can significantly reduce airflow resistance. The cold airflow from the outside will flow smoothly into the side flow opening 41 and then flow upward into the side heat dissipation hole 51 for heat exchange and heat dissipation. This further improves the heat dissipation performance of the side heat dissipation hole 51 for the effective vertical airflow to smoothly dissipate and remove heat accumulated on the heat sink 5.

[0040] In addition, during installation, the mounting base 2 is placed on the top mounting part of the off-road vehicle, and then the lamp housing 1 with the mounting plate 4 is placed on top of the mounting base 2. Then, four bolts 21 are vertically passed through the preset through holes on the mounting plate 4 and the mounting base 2 and threaded into the screw grooves on the top of the off-road vehicle. At this time, by setting the trapezoidal support strip 31 structure on the bottom heat conduction plate 3, the support stability of the support strip 31 between the lamp housing 1 and the mounting base 2 is greatly improved.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heat dissipation device for vehicle lights, comprising a lamp housing (1), characterized in that: The lamp housing (1) has a heat sink (5) on its side wall, a bottom heat conduction plate (3) at the bottom end of the lamp housing (1), a mounting base (2) at the bottom of the lamp housing (1), a bolt (21) on the mounting base (2), a mounting plate (4) on the lamp housing (1), an LED vehicle light assembly (11) at the front end of the lamp housing (1), a side heat dissipation hole (51) and a back air vent (7) on the heat sink (5), a heat exhaust cover (6) on the heat sink (5), and a heat exhaust fan (63) in the heat exhaust cover (6). The mounting plate (4) has a side flow opening (41), and the side flow opening (41) has a flow guiding coating (42). The bottom heat-conducting plate (3) is provided with a support strip (31), and the heat dissipation cover (6) is provided with an upper protective net (61) and a lower protective net (62).

2. The heat dissipation device for vehicle lights according to claim 1, characterized in that: The shell heat sink (5) has a U-shaped cross-section and consists of seven vertically arranged vents. The back air vents (7) consist of four horizontally arranged vents that vertically penetrate the shell heat sink (5). The heat exhaust cover (6) consists of four horizontally arranged vents that are vertically aligned with the LED headlight assembly (11).

3. The heat dissipation device for vehicle lights according to claim 1, characterized in that: The side heat dissipation hole (51) vertically penetrates the shell heat dissipation fin (5) and is vertically aligned with the side flow opening (41). The bottom heat conduction fin (3) consists of nineteen horizontally arranged fins. The support strip (31) is a trapezoidal long strip structure and is located at the lower end of the bottom heat conduction fin (3).

4. A heat dissipation device for vehicle lights according to claim 1, characterized in that: The heat exhaust cover (6) has a hollow cavity inside and is vertically aligned with the back air guide hole (7). The heat exhaust fan (63) is located inside the hollow cavity of the heat exhaust cover (6).

5. A heat dissipation device for vehicle lights according to claim 1, characterized in that: The upper protective net (61) is located at the top of the heat exhaust cover (6), and the lower protective net (62) is located at the bottom of the heat exhaust cover (6).

6. A heat dissipation device for vehicle lights according to claim 1, characterized in that: The bolts (21) are four symmetrically arranged, and the bolts (21) are respectively mounted vertically on the plate (4) and the base (2).

7. A heat dissipation device for vehicle lights according to claim 1, characterized in that: The flow guiding coating (42) is uniformly applied along the inner wall of the side flow opening (41), and the flow guiding coating (42) is a PTFE polytetrafluoroethylene coating with a thickness of eighty to ninety micrometers.

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