LED automobile headlamp

Abstract

The utility model discloses an LED automobile headlamp which comprises a shell, a lamp panel arranged at one end in the shell, a cooling fan arranged at the other end in the shell, a plurality of LED chips arranged on the two sides of the lamp panel, a temperature controller arranged on one side of the lamp panel, a cooling rod arranged under the lamp panel, and a radiator connected with one end of the cooling rod. The radiator is arranged on one side of the cooling fan and comprises a cylindrical circuit board located in the center and a plurality of cooling fins surrounding the periphery of the cylindrical circuit board, heat generated by light emitting of the LED chips can be conducted easily, the cooling efficiency is improved, and the service life of the LED chips is prolonged. And meanwhile, the cylindrical circuit board is electrically connected with the LED chip and the temperature controller through the lamp panel made of a copper-based material, and a power supply connecting port is formed in the bottom of the cylindrical circuit board, so that when the temperature controller detects that the temperature of the lamp body protection shell is too high, the LED chip is automatically disconnected from a power supply, and therefore, the LED chip is protected, and the service life of the LED chip is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lighting, in particular to an LED automobile headlight. Background Art

[0002] At present, with the progress of society and economic development, cars have entered families widely. Car lights are an important part of cars, and they play an important role in driving and ensuring driving safety. For a long time, car lights have been using halogen lamps and xenon lamps. Although they can meet the basic requirements of use, they also have obvious defects such as high operating temperature, high power consumption, low output light efficiency, short service life, large light decay, and delayed start-up. For example, when a 55W / 12V halogen lamp is in use, the temperature near the bulb is greater than 250℃. At present, the lamp cups of car headlights are mostly made of plastic, and the reflective material is electroplated on the inner surface of the lamp cup to form a reflective layer. Under the above high temperature, the reflective material of the lamp cup will accelerate aging and fall off. Therefore, many car headlights have begun to use LED light sources instead of halogen lamps.

[0003] However, the LED car headlights currently produced mostly use two light panels attached to the lamp body for conductive heat dissipation. The contact area between the light panel and the lamp body is small, the heat dissipation efficiency is low, and the life of the LED chip is affected; the LED car headlights currently produced include a radiator, but the radiator is usually partially exposed and is easily damaged; in order to prevent light from diverging and to better gather light, the LED car headlights currently produced are equipped with a sunshade, but the sunshade is usually installed on the side of the lamp body and is easily fallen off. Utility Model Content

[0004] The purpose of the utility model is to provide an LED automobile headlight capable of solving the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, an embodiment of the utility model provides an LED automobile headlight, comprising a housing, and further comprising:

[0006] A light board, the light board is arranged at one end of the housing, and a plurality of LED chips are arranged on both sides of the light board;

[0007] A cooling fan, wherein the cooling fan is arranged at the other end of the housing;

[0008] A radiator, the radiator is arranged in the housing on one side of the cooling fan, and the end of the light panel close to the cooling fan is connected to the radiator;

[0009] A chuck is arranged around the surface of the shell.

[0010] Optionally, the outer shell is a structure consisting of two left-right symmetrical semicircular cross-section shells, and the semicircular cross-section shells are divided into a lamp body protective shell, a radiator protective shell and a fan protective shell from left to right, and the lamp body protective shell, the radiator protective shell and the fan protective shell are an integrated structure.

[0011] Optionally, the lamp board is installed in a lamp body protective shell, a temperature controller is provided on one side of the lamp board, and a light guide port corresponding to the LED chip is opened on the lamp body protective shell.

[0012] Optionally, a light shield is fixedly connected to the lamp body protective shell, the mounting hole of the light shield is connected with the mounting hole of the lamp body protective shell and is in the same cross-section, the light shield is L-shaped, the shorter end of the light shield is fixedly connected to the end of the lamp body protective shell, and the longer end extends to above the light guide port.

[0013] Optionally, a heat sink is arranged in the lamp body protective shell just below the lamp board, the heat sink is arranged side by side with the lamp board, and one end of the heat sink close to the heat sink fan is connected to the radiator.

[0014] Optionally, the radiator is installed in a radiator protective shell, and the radiator protective shell is provided with heat dissipation ports around it. The radiator includes a cylindrical circuit board located in the center and a plurality of heat dissipation fins surrounding the cylindrical circuit board. A power connection port is provided at the bottom of the cylindrical circuit board, and a power cord opening corresponding to the power connection port is provided at the bottom of the radiator protective shell.

[0015] Optionally, the lamp board is made of copper-based material, and the cylindrical circuit board is electrically connected to the LED chip and the temperature controller through the lamp board.

[0016] Optionally, the heat dissipation fan is installed in a fan protection shell, and a driving shaft of the heat dissipation fan is electrically connected to the cylindrical circuit board.

[0017] Optionally, the chuck is provided with a hollow inner cavity, the inner cavity diameter of the chuck is larger than the cross-sectional diameter of the lamp body protective shell and smaller than the cross-sectional diameter of the radiator protective shell, the surface of the lamp body protective shell is provided with a mounting block, the chuck is mounted around the surface of the mounting block, the mounting block is provided with a limit block, and the inner cavity of the chuck is provided with a limit groove corresponding to the limit block.

[0018] Optionally, an elastic O-ring is provided between the front end surface of the chuck and the rear end surface of the heat sink protection shell, and the rear end surface of the chuck is tightly pressed against the elastic O-ring.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] (1) The utility model arranges a heat sink under the lamp board, and the lamp board and the heat sink are arranged side by side and are connected to the heat sink at the same direction of the end, and the heat sink includes a cylindrical circuit board located in the center and a plurality of heat sink fins surrounding the cylindrical circuit board, which is beneficial to conduct the heat generated by the light emission of the LED chip and increase the heat dissipation efficiency. In addition, the cylindrical circuit board is electrically connected to the LED chip and the temperature controller through the lamp board adopting copper-based material. A power connection port is provided at the bottom of the cylindrical circuit board, so that when the temperature controller detects that the temperature of the lamp body protective shell where the LED chip is located is too high, the connection between the LED chip and the power supply is automatically disconnected, thereby protecting the LED chip and extending the life of the LED chip.

[0021] (2) The utility model has an outer shell composed of two semicircular cross-section shells that are symmetrical on the left and right. The semicircular cross-section shell is an integrated structure of a lamp body protection shell, a radiator protection shell and a fan protection shell. The outer shell of the LED car headlight can be made of an integrally formed extruded profile, which can be used together to simplify the production process and reduce the production cost. At the same time, the radiator protection shell protects the entire radiator to avoid the problem of easy damage to the radiator.

[0022] (3) The utility model has a light shield fixedly connected to the lamp body protective shell, and the light shield is designed to be L-shaped. The shorter end of the light shield is fixedly connected to the end of the lamp body protective shell, and the longer end of the light shield extends to the top of the light guide port, so that the light shield can be firmly attached to one end of the shell, avoiding the problem of the light shield being unstable when installed on the side of the shell. At the same time, since the mounting hole of the light shield is connected with the mounting hole of the lamp body protective shell and is in the same cross-section, the light shield is fixed while the lamp body protective shell is reinforced by the same fixing part, and the light shield can be fixed without providing an additional fixing part. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0025] Figure 2 It is an exploded view of the utility model.

[0026] Figure 3 It is a front view of the utility model.

[0027] Figure 4 It is a top view of the utility model.

[0028] Figure 5 for Figure 3 AA cross-section diagram.

[0029] In the figure: housing 1, lamp body protective shell 101, radiator protective shell 102, fan protective shell 103, lamp board 2, cooling fan 3, radiator 4, cylindrical circuit board 401, cooling fins 402, power connection port 403, chuck 5, LED chip 6, temperature controller 7, heat sink 8, sunshade 9, limit block 10, limit groove 11, power cord opening 12, elastic O-ring 13, mounting block 14. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the embodiments of the present invention, it should be understood that if there are directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, inside, outside, etc., the directions or positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the embodiments of the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] In the embodiments of the present invention, unless otherwise clearly specified and limited, if there are terms such as "installed", "connected", "connected", "fixed", etc., they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0034] like Figures 1 to 5As shown, the embodiment of the utility model provides an LED automobile headlight, including a housing 1, a lamp board 2, a cooling fan 3, a radiator 4 and a chuck 5. The lamp board 2 is arranged at one end of the housing 1, and the cooling fan 3 is arranged at the other end of the housing 1. The lamp board 2 is made of copper-based material. A plurality of LED chips 6 are arranged on both sides of the lamp board 2, and a temperature controller 7 is arranged on one side. A cooling rod 8 is arranged directly below the lamp board 2. The cooling rod 8 and the lamp board 2 are arranged side by side. The ends of the lamp board 2 and the cooling rod 8 close to the cooling fan 3 are connected to the radiator 4. The radiator 4 is arranged in the housing 1 on one side of the cooling fan 3, wherein the cooling rod 8 is arranged at the bottom of the lamp board 2. The heater 4 includes a cylindrical circuit board 401 located in the center and a plurality of heat dissipation fins 402 surrounding the cylindrical circuit board 401, which are beneficial to conduct the heat generated by the light emission of the LED chip 6 and increase the heat dissipation efficiency. The cylindrical circuit board 401 is electrically connected to the LED chip 6 and the temperature controller 7 through the lamp board 2. A power connection port 403 is provided at the bottom of the cylindrical circuit board 401, so that when the temperature controller 7 detects that the temperature of the environment where the LED chip 6 is located is too high, the connection between the LED chip 6 and the external power supply is automatically disconnected, thereby protecting the LED chip 6 and extending the life of the LED chip 6.

[0035] Specifically, the shell 1 is a structure composed of two semicircular cross-section shells that are symmetrical on the left and right. The semicircular cross-section shells are divided into a lamp body protection shell 101, a radiator protection shell 102 and a fan protection shell 103 from left to right, and the lamp body protection shell 101, the radiator protection shell 102 and the fan protection shell 103 are an integrated structure, so that the LED car headlight shell 1 can adopt an integrally molded extruded profile, which can be used by matching, simplifying the production process and further reducing the production cost.

[0036] Furthermore, the lamp board 2 is installed in the lamp body protective shell 101 , and a light guide port corresponding to the LED chip 6 is opened on the lamp body protective shell 101 . The setting of the light guide port is conducive to direct light from the LED chip 6 .

[0037] Furthermore, a light shield 9 is fixedly connected to the lamp body protection shell 101, and the light shield 9 is provided to prevent the light from diverging and to make the light better gathered.

[0038] Specifically, the light shield 9 is L-shaped, with the shorter end of the light shield 9 fixedly connected to the end of the lamp body protective shell 101, and the longer end extending to above the light guide port, so that the light shield 9 can be firmly attached to one end of the outer shell 1, avoiding the problem of the light shield 9 being installed loosely on the side of the outer shell 1. At the same time, since the mounting hole of the light shield 9 is connected with the mounting hole of the lamp body protective shell 101 and is in the same cross-section, the light shield 9 is also fixed while the lamp body protective shell 101 is reinforced by the same fixing part, and the light shield 9 can be fixed without providing an additional fixing part.

[0039] Specifically, the chuck 5 is provided with a hollow inner cavity, the inner cavity diameter of the chuck 5 is larger than the cross-sectional diameter of the lamp body protective shell 101, and smaller than the cross-sectional diameter of the radiator protective shell 102. A mounting block 14 is provided on the surface of the lamp body protective shell 101, and the chuck 5 is mounted around the surface of the mounting block 14. A limiting block 10 is provided on the mounting block 14. A limiting groove 11 corresponding to the limiting block 10 is provided in the inner cavity of the chuck 5. When the chuck 5 is inserted into the lamp body protective shell 101, the limiting groove 11 is aligned with the position of the limiting block 10 and then the chuck 5 is rotated after passing through, thereby fixing the chuck 5.

[0040] Furthermore, an elastic O-ring 13 is provided between the front end surface of the chuck 5 and the rear end surface of the heat sink protection shell 102 , and the rear end surface of the chuck 5 is tightly pressed against the elastic O-ring 13 to eliminate looseness between the chuck 5 and the heat sink protection shell 102 .

[0041] Furthermore, the radiator 4 is installed in the radiator protective shell 102, and the radiator protective shell 102 protects the entire radiator 4 to avoid the problem of easy damage to the radiator 4. The radiator protective shell 102 is provided with heat dissipation ports around it, and the heat dissipation ports are used to discharge the heat emitted by the radiator 4.

[0042] Furthermore, a power cord opening 12 corresponding to the power connection port 403 is provided at the bottom of the radiator protection shell 102 , and the power cord passes through the power cord opening 12 and is connected to the power connection port 403 .

[0043] Furthermore, the cooling fan 3 is installed in the fan protection shell 103 , and the driving shaft of the cooling fan 3 is electrically connected to the cylindrical circuit board 401 , and the connection of the driving shaft is used to control the rotation of the cooling fan 3 .

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An LED automobile headlight, comprising a housing (1), characterized in that: Also includes: A light board (2), the light board (2) being arranged at one end of the housing (1), and a plurality of LED chips (6) being arranged on both sides of the light board (2); A heat dissipation fan (3), wherein the heat dissipation fan (3) is arranged at the other end of the housing (1); A radiator (4), the radiator (4) being arranged in the housing (1) and located on one side of the cooling fan (3), and the end of the lamp panel (2) close to the cooling fan (3) is connected to the radiator (4); A chuck (5) is arranged around the surface of the housing (1).

2. The LED automobile headlight according to claim 1, characterized in that: The housing (1) is a structure composed of two semicircular cross-section shells that are symmetrical on the left and right. The semicircular cross-section shells are divided from left to right into a lamp body protection shell (101), a radiator protection shell (102) and a fan protection shell (103), and the lamp body protection shell (101), the radiator protection shell (102) and the fan protection shell (103) are an integrated structure.

3. The LED automobile headlight according to claim 1, characterized in that: The lamp board (2) is installed in a lamp body protective shell (101); a temperature controller (7) is provided on one side of the lamp board (2); and a light guide port corresponding to the LED chip (6) is provided on the lamp body protective shell (101).

4. The LED automobile headlight according to claim 3, characterized in that: A light shield (9) is fixedly connected to the lamp body protective shell (101); a mounting hole of the light shield (9) is connected to a mounting hole of the lamp body protective shell (101) and is located in the same cross section; the light shield (9) is L-shaped; a shorter end of the light shield (9) is fixedly connected to an end of the lamp body protective shell (101) and a longer end extends to above the light guide port.

5. The LED automobile headlight according to claim 2, characterized in that: A heat dissipation rod (8) is arranged in the lamp body protective shell (101) below the lamp board (2); the heat dissipation rod (8) and the lamp board (2) are arranged side by side, and one end of the heat dissipation rod (8) close to the heat dissipation fan (3) is connected to the radiator (4).

6. The LED automobile headlight according to claim 1, characterized in that: The radiator (4) is installed in a radiator protective shell (102), and heat dissipation ports are arranged around the radiator protective shell (102). The radiator (4) comprises a cylindrical circuit board (401) located in the center and a plurality of heat dissipation fins (402) surrounding the cylindrical circuit board (401). A power connection port (403) is arranged at the bottom of the cylindrical circuit board (401), and a power line opening (12) corresponding to the power connection port (403) is arranged at the bottom of the radiator protective shell (102).

7. The LED automobile headlight according to claim 6, characterized in that: The lamp board (2) is made of a copper-based material, and the cylindrical circuit board (401) is electrically connected to the LED chip (6) and the temperature controller (7) through the lamp board (2).

8. The LED automobile headlight according to claim 6, characterized in that: The heat dissipation fan (3) is installed in the fan protection shell (103), and the driving shaft of the heat dissipation fan (3) is electrically connected to the cylindrical circuit board (401).

9. The LED automobile headlight according to claim 2, characterized in that: The chuck (5) is provided with a hollow inner cavity, the inner cavity diameter of the chuck (5) is larger than the cross-sectional diameter of the lamp body protective shell (101) and smaller than the cross-sectional diameter of the heat sink protective shell (102), the surface of the lamp body protective shell (101) is provided with a mounting block (14), the chuck (5) is mounted around the surface of the mounting block (14), the mounting block (14) is provided with a limit block (10), and the inner cavity of the chuck (5) is provided with a limit groove (11) corresponding to the limit block.

10. The LED automobile headlight according to claim 1, characterized in that: An elastic O-shaped rubber ring (13) is provided between the front end surface of the chuck (5) and the rear end surface of the heat sink protection shell (102), and the rear end surface of the chuck (5) is tightly pressed against the elastic O-shaped rubber ring (13).

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