High-heat-dissipation car lamp

Abstract

The utility model relates to a high-heat-dissipation car lamp which comprises a shell assembly, the shell assembly comprises a left shell and a right shell, a base plate containing cavity, a heat dissipation containing cavity and a fan containing cavity are formed between the left shell and the right shell, an air outlet is formed in the step face of the front end of the heat dissipation containing cavity, the base plate containing cavity is communicated with a lamp window, and a plug connecting part is further arranged at the rear end of the shell assembly; a lamp panel is arranged on at least one face of the substrate, the substrate is arranged in the substrate containing cavity, and lamp beads on the lamp panel are exposed out of the lamp window; the radiator is fixed on at least one surface of the rear end of the substrate, and the radiator is positioned in the radiating accommodating cavity; the heat dissipation fan is installed at the fan containing cavity, the heat dissipation fan comprises an axial flow wind wheel and a micro motor, the heat dissipation fan generates axial flow wind flow with the wind direction facing the front end, and the position, corresponding to axial flow blades of the heat dissipation fan, of the fan containing cavity communicates with an air inlet window; the plug is fixedly connected with the plug connecting part; the circuit board is located between the cooling fan and the plug, and the lamp panel, the micro motor and the plug are all electrically connected with the circuit board.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile headlights, in particular to a highly heat-dissipating headlight. Background Art

[0002] Automobile headlights are tools for vehicle night lighting and also tools for emitting various signal prompts. When in use, automobile headlights generate a large amount of heat, causing the temperature inside the headlights to rise sharply, which will affect the service life of the headlights. And when the temperature is too high, in order to avoid damage to the lamp beads and even cause safety accidents, the circuit board has to control the power reduction, which will affect the use of the headlights. Summary of the Utility Model

[0003] In view of the above situation, it is necessary to propose a highly heat-dissipating headlight that can actively dissipate heat.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a highly heat-dissipating headlight, comprising:

[0005] A housing assembly, including a left housing and a right housing that are detachably connected. Between the left housing and the right housing, from front to back, there are a substrate accommodation cavity, a heat dissipation accommodation cavity, and a fan accommodation cavity. The inner diameter of the substrate accommodation cavity is smaller than that of the heat dissipation accommodation cavity, so that a step is formed between the substrate accommodation cavity and the heat dissipation accommodation cavity. The front stepped surface of the heat dissipation accommodation cavity has an air outlet opening forward. The substrate accommodation cavity communicates with a lamp window, and the lamp window is arranged at the front end of the air outlet. The rear end of the housing assembly is also provided with a plug connection part;

[0006] A substrate, on at least one surface of which a lamp board is arranged. The substrate is disposed in the substrate accommodation cavity, and the lamp beads on the lamp board are exposed from the lamp window;

[0007] A radiator, fixed on at least one surface of the rear end of the substrate. The radiator is located in the heat dissipation accommodation cavity, and the radiator has a number of air ducts that penetrate through from front to back;

[0008] A cooling fan, installed at the fan accommodation cavity. The cooling fan includes an axial flow impeller and a micro motor that drives the axial flow impeller to rotate. The cooling fan generates an axial flow of air directed forward. The fan accommodation cavity communicates with an air inlet window corresponding to the axial flow blades of the cooling fan;

[0009] A plug, connected and fixed to the plug connection part;

[0010] A circuit board, located between the cooling fan and the plug. The lamp board, the micro motor, and the plug are all electrically connected to the circuit board.

[0011] Further, a wind hood is provided at the rear end of the air inlet window of the housing assembly. The wind hood opens towards the rear end, and a plurality of air inlet holes communicating with the bottom of the fan accommodation cavity are provided in the wind hood.

[0012] Further, a plurality of positioning posts are provided in the substrate accommodation cavity of the left housing and / or the right housing, and a plurality of positioning holes adapted to the positioning posts are provided on the substrate.

[0013] Further, a connecting frame is further included. The connecting frame sequentially includes a first side arm, a connecting arm, and a second side arm connected to each other. At the fan accommodation cavity, the housing assembly forms a first card positioning and a second card positioning. The first side arm is nested with the first card positioning in an adapted manner, and the second side arm is nested with the second card positioning in an adapted manner.

[0014] Further, a clamping groove is provided on the surface of the connecting arm facing the substrate, and the bottom of the substrate is adapted to the clamping groove.

[0015] Further, two retaining arms are symmetrically provided at the bottom of the micro motor, and both of the two retaining arms are abutted against the same side of the first side arm and the second side arm.

[0016] Further, limiting portions are provided at the ends of the first side arm and the second side arm away from the connecting arm, and limiting grooves adapted to the limiting portions are provided on the circuit board.

[0017] Further, the circuit board is a non-polar circuit board.

[0018] Further, a convex body is provided on the surface of the circuit board facing away from the substrate, and a limiting hole adapted to the convex body is provided on the plug.

[0019] Further, the radiator includes a bottom plate and a plurality of heat dissipation fins provided on the bottom plate. The heat dissipation fins are arranged in the front-rear direction, and the bottom plate is fixed on the substrate.

[0020] The beneficial effects of the present utility model are as follows: When the plug is powered on, the lamp board transfers heat to the substrate, the substrate transfers the heat to the radiator, the cooling fan generates an axial flow of air, and the axial flow of air dissipates the heat from the air outlet through the front and rear air ducts of the radiator. At the same time, the air flow blown out from the air outlet also takes away the heat of the lamp beads exposed from the lamp window, so as to achieve the effect of active heat dissipation, improve the heat dissipation capacity of the vehicle lamp, and thus improve the service life of the vehicle lamp, which is more beneficial to the long-term use of the vehicle lamp. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of a vehicle lamp with high heat dissipation according to an embodiment of the present utility model;

[0022] Figure 2It is a schematic structural diagram of a high - heat - dissipation vehicle lamp in another direction according to an embodiment of the present utility model;

[0023] Figure 3 It is a schematic cross - sectional structural diagram of a high - heat - dissipation vehicle lamp according to an embodiment of the present utility model;

[0024] Figure 4 It is an exploded structural diagram of a high - heat - dissipation vehicle lamp according to an embodiment of the present utility model;

[0025] Figure 5 It is a schematic installation structural diagram of a high - heat - dissipation vehicle lamp according to an embodiment of the present utility model;

[0026] Figure 6 It is a schematic internal structural diagram of a high - heat - dissipation vehicle lamp according to an embodiment of the present utility model.

[0027] Reference numeral description:

[0028] 100, housing assembly; 110, left housing; 120, right housing; 130, substrate accommodation cavity; 131, lamp window;

[0029] 132, positioning post; 140, heat - dissipation accommodation cavity; 141, air outlet; 150, fan accommodation cavity;

[0030] 151, air inlet window; 152, first card - positioning; 153, second card - positioning; 160, plug connection part;

[0031] 170, wind cover; 171, air inlet hole; 200, substrate; 210, lamp board; 211, lamp beads;

[0032] 220, positioning hole; 300, radiator; 310, bottom plate; 320, heat - dissipation fins; 321, air duct;

[0033] 400, heat - dissipation fan; 410, axial - flow wind wheel; 420, micro - motor; 430, retaining arm;

[0034] 500, plug; 510, side groove; 600, connecting frame; 610, first side arm; 620, connecting arm;

[0035] 621, clamping groove; 630, second side arm; 640, limiting part; 700, circuit board; 710, limiting groove; 720, convex body. Detailed implementation manners

[0036] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the following further details the high - heat - dissipation vehicle lamp of the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0037] Please refer to Figures 1 - 6 , a high heat dissipation headlight, comprising:

[0038] A housing assembly 100, including a left housing 110 and a right housing 120 which are detachably connected. Between the left housing 110 and the right housing 120, from front to back, there are a substrate 200 accommodation cavity 130, a heat dissipation accommodation cavity 140 and a fan accommodation cavity 150. The inner diameter of the substrate 200 accommodation cavity 130 is smaller than that of the heat dissipation accommodation cavity 140, so that a step is formed between the substrate 200 accommodation cavity 130 and the heat dissipation accommodation cavity 140. The front stepped surface of the heat dissipation accommodation cavity 140 has an air outlet 141 with a forward opening. The substrate 200 accommodation cavity 130 communicates with a lamp window 131. The lamp window 131 is arranged at the front end of the air outlet 141. At the rear end of the housing assembly 100, there is also a plug 500 connection part 160;

[0039] A substrate 200, on at least one surface of the substrate 200, there is a lamp board 210 arranged. The substrate 200 is configured in the substrate 200 accommodation cavity 130, and the lamp beads 211 on the lamp board 210 are exposed from the lamp window 131;

[0040] A radiator 300, fixed on at least one surface of the rear end of the substrate 200. The radiator 300 is located in the heat dissipation accommodation cavity 140. The radiator 300 has a number of air ducts 321 that penetrate through from front to back;

[0041] A heat dissipation fan 400, installed at the fan accommodation cavity 150. The heat dissipation fan 400 includes an axial flow impeller 410 and a micro motor 420 that drives the axial flow impeller 410 to rotate. The heat dissipation fan 400 generates an axial flow of air with the wind direction towards the front end. The fan accommodation cavity 150 communicates with an air inlet window 151 corresponding to the axial flow blades of the heat dissipation fan 400;

[0042] A plug 500, connected and fixed to the plug 500 connection part 160;

[0043] A circuit board 700, located between the heat dissipation fan 400 and the plug 500. The lamp board 210, the micro motor 420 and the plug 500 are all electrically connected to the circuit board.

[0044] When the plug 500 is powered on, the lamp board 210 transfers heat to the substrate 200, the substrate 200 transfers heat to the radiator 300. The heat dissipation fan 400 generates an axial flow of air. The axial flow of air passes through the front and back air ducts 321 of the radiator 300 to dissipate heat from the air outlet 141. At the same time, the air flow blown out from the air outlet 141 also takes away the heat of the lamp beads 211 exposed from the lamp window 131, so as to achieve the effect of active heat dissipation, improve the heat dissipation capacity of the headlight, thereby improving the service life of the headlight, and being more conducive to the long-term use of the headlight.

[0045] Please refer to Figure 2 and Figure 4, the housing assembly 100 is provided with a wind hood 170 at the rear end of the air inlet window 151. The wind hood 170 opens towards the rear end, and a plurality of air inlet holes 171 communicating with the bottom of the fan accommodation cavity 150 are provided in the wind hood 170. The wind hood 170 is provided to isolate the air window and the air inlet holes 171, so that the side air intake and the bottom air intake do not interfere with each other, ensuring the air intake volume, and at the same time dissipating heat from the circuit board 700 and the plug 500 close to the air inlet holes 171.

[0046] Please refer to Figure 4 and Figure 5 , a plurality of positioning posts 132 are provided in the substrate 200 accommodation cavity 130 of the left housing 110 and / or the right housing 120, and a plurality of positioning holes 220 adapted to the positioning posts 132 are provided on the substrate 200. The positioning posts 132 are provided to ensure the stability of the installation of the substrate 200.

[0047] Please refer to Figures 3 - 6 , it further includes a connecting frame 600. The connecting frame 600 successively includes a first side arm 610, a connecting arm 620 and a second side arm 630 connected to each other. At the fan accommodation cavity 150, the housing assembly 100 is formed with a first card positioning portion 152 and a second card positioning portion 153. The first side arm 610 is adaptively nested with the first card positioning portion 152, and the second side arm 630 is adaptively nested with the second card positioning portion 153. The connecting frame 600 is provided to facilitate the installation of the cooling fan 400. It can be understood that the first card positioning portion 152 and the second card positioning portion 153 can be grooves or holes.

[0048] Please refer to Figure 3 and Figure 4 , a clamping groove 621 is provided on the surface of the connecting arm 620 facing the substrate 200, and the bottom of the substrate 200 is adapted to the clamping groove 621. Preferably, a corner avoiding groove is further provided at the corner of the clamping groove 621.

[0049] Please refer to Figure 4 and Figure 5 , two retaining arms 430 are symmetrically provided at the bottom of the micro motor 420, and both of the two retaining arms 430 are abutted against the same side of the first side arm 610 and the second side arm 630. The horizontal movement or rotation of the micro motor 420 is restricted to ensure the stable operation of the axial flow impeller 410. In particular, the retaining arms 430 can also be welded and fixed to the two side arms.

[0050] Please refer to Figures 4 - 6 , limiting portions 640 are provided at the ends of the first side arm 610 and the second side arm 630 away from the connecting arm 620, and a limiting groove 710 adapted to the limiting portions 640 is provided on the circuit board 700. The limiting portions 640 can be directly formed by the first side arm 610 and the second side arm 630, or can be formed by radially inwardly extending protrusions at the ends of the first side arm 610 and the second side arm 630.

[0051] Preferably, the circuit board 700 is a stepless circuit board, so that the vehicle lamp can be steplessly electrically connected. In particular, the bottom of the micro-motor 420 is welded to the circuit board 700.

[0052] Please refer to Figure 3 , a convex body 720 is provided on the side of the circuit board 700 facing away from the substrate 200, and the plug 500 is provided with a limiting hole adapted to the convex body 720. The cooperation of the convex body 720 and the limiting hole can ensure the accuracy of installation alignment.

[0053] Please refer to Figures 4 - 6 , the radiator 300 includes a bottom plate 310 and a plurality of heat dissipation fins 320 provided on the bottom plate 310. The heat dissipation fins 320 are arranged in the front-rear direction, and the bottom plate 310 is fixed to the substrate 200. In particular, the height of the heat dissipation fins 320 gradually decreases from the middle to the left and right sides.

[0054] Generally, the left shell 110 and the right shell 120 are connected by screwing. For the convenience of connection, a positioning structure can be set as needed for assistance.

[0055] The connection between the plug 500 and the housing assembly 100 can be connected by snap fit, that is, a snap side groove 510 is provided at the front end of the plug 500, and a convex ring is provided in the housing assembly 100, and the convex ring is adapted to the snap side groove 510.

[0056] Generally, a lamp board 210 is provided on each side of the substrate 200. Preferably, a radiator 300 is provided on each side of the substrate 200, and similarly, the air outlet 141 is also correspondingly provided.

[0057] In particular, the accommodation cavity 130, the heat dissipation accommodation cavity 140, and the fan accommodation cavity 150 of the substrate 200 are all arranged in a stepped manner, that is, they gradually expand from front to back. The air intake capacity and the air outlet wind speed are improved, thereby promoting heat dissipation.

[0058] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0059] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features.

[0060] In summary, for the high-heat-dissipation vehicle lamp provided by the present utility model, after the plug is powered on, the lamp board transfers heat to the substrate, the substrate transfers the heat to the radiator, the cooling fan generates an axial air flow, and the axial air flow dissipates the heat from the air outlet through the front and rear air ducts of the radiator. At the same time, the air flow blown out from the air outlet also takes away the heat of the lamp beads exposed from the lamp window, thereby achieving the effect of active heat dissipation, improving the heat dissipation capacity of the vehicle lamp, thus extending the service life of the vehicle lamp and being more conducive to the long-term use of the vehicle lamp.

[0061] The above are only the preferred embodiments of the present utility model and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the technical content disclosed above within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A high heat dissipation headlight, characterized in that: include: A housing assembly, comprising a detachably connected left housing and a right housing, wherein the left housing and the right housing comprise a substrate accommodating chamber, a heat dissipating chamber and a fan accommodating chamber from front to back, wherein the inner diameter of the substrate accommodating chamber is smaller than the inner diameter of the heat dissipating chamber so that a step is formed between the substrate accommodating chamber and the heat dissipating chamber, wherein the front step surface of the heat dissipating chamber has an air outlet opening forward, the substrate accommodating chamber is connected to a lamp window, and the lamp window is arranged at the front end of the air outlet, and a plug connecting portion is also arranged at the rear end of the housing assembly; A substrate, wherein a lamp board is provided on at least one side of the substrate, the substrate is arranged in the substrate accommodating cavity, and lamp beads on the lamp board are exposed from the lamp window; A heat sink fixed on at least one side of the rear end of the substrate, the heat sink is located in the heat dissipation accommodating cavity, and the heat sink has a plurality of air ducts passing through the front and back; A cooling fan is installed in the fan accommodating chamber, the cooling fan comprises an axial flow fan wheel and a micro motor driving the axial flow fan wheel to rotate, the cooling fan generates an axial flow wind flow with a wind direction toward the front end, and the fan accommodating chamber is connected to an air inlet window at a position corresponding to the axial flow blades of the cooling fan; A plug is fixedly connected to the plug connection portion, and the light board and the micro motor are both electrically connected to the plug A circuit board is located between the cooling fan and the plug, and the light board, the micro motor and the plug are all electrically connected to the circuit board.

2. The high heat dissipation vehicle lamp according to claim 1, characterized in that: The shell component is provided with a wind shield at the rear end of the wind inlet window, the wind shield is open to the rear end, and a plurality of air inlet holes communicating with the bottom of the fan accommodating chamber are provided in the wind shield.

3. The high heat dissipation vehicle lamp according to claim 1, characterized in that: The left shell and / or the right shell are provided with a plurality of positioning posts in the substrate accommodating cavity, and the substrate is provided with a plurality of positioning holes matched with the positioning posts.

4. The high heat dissipation vehicle lamp according to claim 1, characterized in that: It also includes a connecting frame, which includes a first side arm, a connecting arm and a second side arm connected in sequence. The shell assembly is formed with a first card position and a second card position at the fan accommodating chamber. The first side arm is adapted to be nested with the first card position, and the second side arm is adapted to be nested with the second card position.

5. The high heat dissipation vehicle lamp according to claim 4, characterized in that: A clamping groove is provided on a side of the connecting arm facing the base plate, and the bottom of the base plate is matched with the clamping groove.

6. The high heat dissipation vehicle lamp according to claim 4, characterized in that: Two blocking arms are symmetrically arranged at the bottom of the micro motor, and the two blocking arms are both in contact with the same side of the first side arm and the second side arm.

7. The high heat dissipation vehicle lamp according to claim 4, characterized in that: A limiting portion is provided at one end of the first side arm and the second side arm away from the connecting arm, and a limiting groove which is nested with the limiting portion is provided on the circuit board.

8. The high heat dissipation vehicle lamp according to claim 1, characterized in that: The circuit board is a non-polar circuit board.

9. The high heat dissipation vehicle lamp according to claim 7, characterized in that: A convex body is provided on a side of the circuit board facing away from the base plate, and a limiting hole matched with the convex body is provided on the plug.

10. The high heat dissipation vehicle lamp according to claim 1, characterized in that: The radiator comprises a bottom plate and a plurality of radiating fins arranged on the bottom plate, wherein the radiating fins are arranged along the front-back direction, and the bottom plate is fixed on the base plate.

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