Car lamp heat dissipation device

Abstract

The utility model discloses a car lamp heat dissipation device which comprises a box body and a heat dissipation fan, and the heat dissipation fan is installed in the box body. The bottom of the box body is provided with a ventilation pipe communicated with the interior of the automobile lamp, a plurality of one-way channels are formed in the box body, a plurality of air outlets communicated with the outside are formed in the circumferential side wall of the box body, and the ventilation pipe, the one-way channels and the air outlets are sequentially communicated. The axis of the ventilation pipe is perpendicular to the box body, the air inlet ends of the multiple one-way channels intersect at the inner end of the ventilation pipe, and the cooling fan is arranged at the inner end of the ventilation pipe and used for driving air in the automobile lamp to enter the multiple one-way channels and then be blown out of the air outlets. According to the embodiment of the utility model, the cooling fan and the one-way channel are arranged in the box body, so that air in the automobile lamp can be discharged out of the box body in a one-way manner, the special one-way conduction structure can accelerate air circulation, external water vapor or rainwater and the like can be prevented from reversely entering the automobile lamp, heat can be quickly dissipated, and the waterproof and dustproof performance of the automobile lamp can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle accessories, in particular to a vehicle lamp accessory. Background Art

[0002] At present, vehicle lamps are essential devices on most vehicles. Most automotive headlights are composed of a light-emitting component, a functional component, and front and rear shells. During the photoelectric conversion process, the light-emitting component releases heat. When the vehicle is running, the oncoming air will carry away a part of the heat conducted to the headlight housing, and the remaining heat needs to be assisted in heat dissipation by installing a breather cap or a breather membrane at the bottom shell of the headlight. Existing vehicle lamps often need to use a light source with a relatively high power to achieve the specified brightness, and a high-power light source is prone to generate high temperatures. When the automotive headlight is working, the air inside the headlight cannot be quickly exchanged with the outside for heat dissipation, which easily causes the lamp housing and the light-emitting component to age rapidly, thus easily affecting the use performance and shortening the service life. Moreover, the heat dissipation fan of the light-emitting component keeps working continuously, resulting in a large power consumption of the vehicle lamp.

[0003] Some existing heat dissipation structures, such as directly opening heat dissipation holes at a certain place of the vehicle lamp and then using a fan for heat dissipation, have problems such as limited air exchange effect and poor sealing effect. It is easy to cause water ingress, fogging or dust ingress inside the vehicle lamp, and will also accelerate the oxidation and aging of the components inside the vehicle lamp, affecting the use performance of the vehicle lamp and shortening the service life of the vehicle lamp. Therefore, it is necessary to redesign a rapid heat dissipation device for vehicle lamps. Summary of the Utility Model

[0004] In view of this, the utility model provides a vehicle lamp heat dissipation device, which is used to solve the problems of slow heat dissipation speed and poor dust and waterproof performance of the heat dissipation structure of the vehicle lamp in the prior art.

[0005] To achieve one or part or all of the above purposes or other purposes, the utility model proposes: a vehicle lamp heat dissipation device, including: a box body and a heat dissipation fan, and the heat dissipation fan is installed inside the box body;

[0006] The bottom of the box body is provided with a ventilation pipe for communicating with the inside of the vehicle lamp. The inside of the box body is provided with a plurality of one-way channels. The circumferential side wall of the box body is provided with a plurality of air outlets communicating with the outside. The ventilation pipe, the one-way channels and the air outlets are connected in sequence;

[0007] The axis of the inner end of the ventilation pipe is perpendicular to the bottom surface of the box body. The air inlet ends of the plurality of one-way channels converge at the inner end of the ventilation pipe. The heat dissipation fan is arranged at the inner end of the ventilation pipe for driving the air inside the vehicle lamp to enter the plurality of one-way channels respectively and then blow out from each of the air outlets.

[0008] Preferably, the one-way channel is a Tesla valve structure.

[0009] Preferably, an installation cavity is provided in the middle of the box body, the cooling fan is installed in the installation cavity, and several of the one-way channels are respectively communicated with the installation cavity and are evenly distributed along the circumferential direction of the installation cavity.

[0010] Preferably, several air outlets are evenly distributed along the circumferential side wall of the box body and correspond to the air outlet ends of the one-way channels one by one.

[0011] Preferably, the box body includes an upper shell and a lower shell, and the upper shell and the lower shell are covered to form the installation cavity and the one-way channels.

[0012] Preferably, the size and shape of the installation cavity are adapted to the cooling fan.

[0013] Preferably, several positioning posts are provided in the installation cavity, several positioning holes are provided on the cooling fan, and the positioning posts are connected to the positioning holes one by one.

[0014] Preferably, several elastic buckles are provided on the outer side wall of the ventilation pipe along the circumferential direction, and the elastic buckles are used for clamping with the housing of the vehicle lamp.

[0015] Preferably, a limiting ring is provided on the inner side wall of the ventilation pipe, and the limiting ring is used for wire routing and wire bundling.

[0016] Preferably, several lugs are provided on the circumferential side wall of the box body, and screw holes are provided on the lugs for connecting with the housing of the vehicle lamp.

[0017] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0018] After adopting the above vehicle lamp heat dissipation device, through the cooling fan and the one-way channels provided in the box body, the air in the vehicle lamp can be quickly discharged outside the box body through a special one-way valve structure, and the one-way conduction structure of the one-way channels can also prevent external water vapor or rain from entering the vehicle lamp in the reverse direction, improving the waterproof performance of the vehicle lamp while ensuring the heat dissipation effect. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0020] Among them:

[0021] Figure 1Schematic diagram of the overall structure of the headlight heat dissipation device proposed by the present utility model;

[0022] Figure 2 Exploded structure schematic of the headlight heat dissipation device proposed by the present utility model Figure 1 ;

[0023] Figure 3 Exploded structure schematic of the headlight heat dissipation device proposed by the present utility model Figure 2 ;

[0024] Figure 4 Front view of the lower case of the headlight heat dissipation device proposed by the present utility model.

[0025] Reference numerals: 10, box body; 101, upper case; 102, lower case; 11, ventilation pipe; 111, elastic buckle; 112, limiting ring; 12, one-way channel; 13, air outlet; 14, installation cavity; 15, positioning post; 16, lug; 161, screw hole; 20, cooling fan; 21, positioning hole. Detailed implementation manners

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs; the terms used in the description of the present application in the specification are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model; the terms "comprising" and "having" and any variations thereof in the specification and claims of the present utility model and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of the present utility model or the above drawings are used to distinguish different objects, rather than to describe a specific order.

[0027] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present utility model. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0028] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings.

[0029] As Figures 1-4 shown, it is an embodiment provided by the present utility model.

[0030] An embodiment of the present utility model provides a headlight heat dissipation device, including: a box body 10 and a heat dissipation fan 20. The heat dissipation fan 20 is installed inside the box body 10. The heat dissipation fan 20 can be selected from a centrifugal fan or an axial flow fan. A ventilation pipe 11 for communicating with the inside of the headlight is provided at the bottom of the box body 10. Generally speaking, holes of appropriate sizes need to be drilled on the back or side of the headlight and then docked with the ventilation pipe 11 to facilitate the air circulation and heat exchange between the headlight and the inside of the box body 10. A number of one-way channels 12 are provided inside the box body 10. The one-way channels 12 preferably adopt the Tesla valve structure. The Tesla valve is a valve that is close to one-way conduction. Its special internal structure allows the fluid to pass through normally when entering in the forward direction, and generates resistance when the fluid enters in the reverse direction, similar to a common one-way valve. A number of air outlets 13 communicating with the outside are provided on the circumferential side wall of the box body 10. The air inlet end of the heat dissipation fan 20 is communicated with the ventilation pipe 11. The axis of the inner end of the ventilation pipe 11 is perpendicular to the bottom surface of the box body 10. The air inlet end of the heat dissipation fan 20 generally faces the ventilation pipe 11, which can more efficiently suck the air inside the headlight into the box body 10. The air inlet ends of a number of one-way channels 12 converge at the inner end of the ventilation pipe 11. The heat dissipation fan 20 is arranged at the inner end of the ventilation pipe 11. The air outlet end of the heat dissipation fan 20 is communicated with the air inlet end of the one-way channel 12. The air outlet end of the one-way channel 12 is communicated with the air outlet 13. The heat dissipation fan 20 can drive the air inside the headlight to enter a number of one-way channels 12 respectively. When passing through the inside of the Tesla valve structure, a venturi effect will be formed. After several gradient pressurizations, it will be accelerated and blown out from each air outlet 13 respectively. After adopting the above headlight heat dissipation device, through the heat dissipation fan 20 and the one-way channels 12 arranged inside the box body 10, the hot air inside the headlight can be discharged outside the box body 10. The one-way conduction structure of the one-way channels 12 can also prevent the outside water vapor or rainwater from entering the headlight in the reverse direction. While ensuring the heat dissipation effect, the waterproof performance of the headlight is improved. It has the advantages of simple structure, high reliability, good ventilation effect, good airtightness, low energy consumption, high safety and convenient installation, etc., and can quickly dissipate heat and prevent dust and water for the headlight, so as to play a role in extending the service performance and service life of the headlight.

[0031] Specifically, the box body 10 is integrally circular. An installation cavity 14 is provided in the middle of the box body 10. The heat dissipation fan 20 is installed in the installation cavity 14. The size and shape of the installation cavity 14 are adapted to the heat dissipation fan 20. A number of one-way channels 12 are respectively communicated with the installation cavity 14 and are evenly distributed along the circumference of the installation cavity 14. A number of air outlets 13 are evenly distributed along the circumferential side wall of the box body 10 and correspond to the air outlet ends of the one-way channels 12 one by one, which is convenient for quick heat dissipation.

[0032] Specifically, the box body 10 includes an upper shell 101 and a lower shell 102. The upper shell 101 and the lower shell 102 are closed to form an installation cavity 14 and a one-way channel 12. Generally speaking, the installation cavity 14 and the one-way channel 12 can be arranged in half in the upper shell 101 and the lower shell 102. When the upper shell 101 and the lower shell 102 are enclosed, a complete installation cavity 14 and a one-way channel 12 are formed. After the upper shell 101 and the lower shell 102 are connected by covering, the connection gap between the two can be sealed with sealant or a sealing patch to prevent water and / or dust from entering.

[0033] Furthermore, a number of positioning posts 15 are arranged in the installation cavity 14, and a number of positioning holes 21 are arranged on the heat dissipation fan 20. The positioning posts 15 and the positioning holes 21 are connected in one-to-one correspondence. The positioning posts 15 are also arranged in half in the upper shell 101 and the lower shell 102, and then are respectively inserted into the positioning holes 21 from top to bottom, which can not only fix the heat dissipation fan 20, but also ensure that the half of the one-way channel 12 in the upper shell 101 and the other half of the one-way channel 12 in the lower shell 102 are accurately enclosed.

[0034] Specifically, the ventilation pipe 11 extends vertically out of the bottom of the box body 10. A number of elastic buckles 111 are arranged on the outer side wall of the ventilation pipe 11 along the circumferential direction. The elastic buckles 111 are used to be clamped with the housing of the vehicle lamp to connect the box body 10 to the vehicle lamp. In addition, a limiting ring 112 is arranged on the inner side wall of the ventilation pipe 11. The limiting ring 112 is used for wire routing and bundling, so that the wires of the heat dissipation fan 20 can be routed closely along the inner side wall of the ventilation pipe 11 and then connected to the wires of the vehicle lamp, with neat wiring and not easily affecting air circulation.

[0035] Furthermore, a number of lugs 16 are arranged on the circumferential side wall of the box body 10, and screw holes 161 are arranged on the lugs 16, which are used to connect with the housing of the vehicle lamp to make the connection between the box body 10 and the vehicle lamp more firm.

[0036] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The preferred embodiments of the present invention are given in the drawings, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure made by using the specification and drawings of the present invention, directly or indirectly applied to other related technical fields, is equally within the scope of the patent protection of the present invention.

Claims

1. A headlight heat dissipation device, characterized in that, Including: A box body (10) and a cooling fan (20), the cooling fan (20) is installed inside the box body (10); A ventilation pipe (11) for communicating with the inside of the vehicle lamp is provided at the bottom of the box body (10), several one-way channels (12) are provided inside the box body (10), and several air outlets (13) communicating with the outside are provided on the circumferential side wall of the box body (10), and the ventilation pipe (11), the one-way channels (12) and the air outlets (13) are communicated in sequence; The axis of the inner end of the ventilation pipe (11) is perpendicular to the bottom surface of the box body (10), the air inlet ends of several one-way channels (12) converge at the inner end of the ventilation pipe (11), and the cooling fan (20) is arranged at the inner end of the ventilation pipe (11) for driving the air inside the vehicle lamp to enter several one-way channels (12) respectively and then blow out from each air outlet (13).

2. The headlight heat dissipation device according to claim 1, wherein, The one-way channel (12) is of a Tesla valve structure.

3. The headlight heat dissipation device according to claim 1, characterized in that, An installation cavity (14) is provided in the middle of the box body (10), the cooling fan (20) is installed in the installation cavity (14), and several one-way channels (12) are respectively communicated with the installation cavity (14) and are uniformly distributed along the circumference of the installation cavity (14).

4. The headlamp heat dissipation device according to claim 3, characterized in that, Several air outlets (13) are uniformly distributed along the circumferential side wall of the box body (10) and correspond to the air outlet ends of the one-way channels (12) one by one.

5. The headlight heat dissipation device according to claim 3, characterized in that, The box body (10) includes an upper shell (101) and a lower shell (102), and the upper shell (101) and the lower shell (102) are covered to form the installation cavity (14) and the one-way channels (12).

6. The headlight heat dissipation device according to claim 5, wherein, The size and shape of the installation cavity (14) are adapted to the cooling fan (20).

7. The headlamp heat dissipation device according to claim 6, wherein, Several positioning posts (15) are provided in the installation cavity (14), several positioning holes (21) are provided on the cooling fan (20), and the positioning posts (15) are connected with the positioning holes (21) one by one.

8. The headlight heat dissipation device according to claim 1, characterized in that, Several elastic buckles (111) are provided on the outer side wall of the ventilation pipe (11) along the circumference, and the elastic buckles (111) are used for clamping with the shell of the vehicle lamp.

9. The headlight heat dissipation device according to claim 8, characterized in that, A limiting ring (112) is provided on the inner side wall of the ventilation pipe (11), and the limiting ring (112) is used for wire routing and wire bundling.

10. The headlight heat dissipation device according to claim 1, characterized in that, Several lugs (16) are provided on the circumferential side wall of the box body (10), and screw holes (161) are provided on the lugs (16) for connecting with the shell of the vehicle lamp.

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