Closed automobile headlamp

Abstract

The utility model discloses a closed automobile headlamp. The closed automobile headlamp comprises a shell, a radiator, an LED light source module and a reflector, wherein the radiator, the LED light source module and the reflector are sequentially arranged in the shell. The low-beam radiator and the high-beam radiator directly abut against the inner side wall of the shell, after the low-beam light source module and the high-beam light source module generate heat during irradiation, the heat is firstly dissipated through the low-beam radiator and the high-beam radiator, and due to the fact that the low-beam radiator and the high-beam radiator directly abut against the shell, the heat is dissipated through the low-beam radiator and the high-beam radiator. And the low beam radiator and the high beam radiator directly conduct the heat to the shell, and then the shell conducts the heat to the outside air. Compared with the prior art that the low-beam radiator and the high-beam radiator need to conduct heat to gap air between the low-beam radiator and the high-beam radiator and the shell and then can conduct the heat to the shell, the low-beam radiator and the high-beam radiator directly conduct the heat to the shell, air conduction of the heat in the shell is avoided, the heat dissipation efficiency is improved, and the heat dissipation efficiency is improved. And the service life of the LED module is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lighting, in particular to a closed automobile headlamp. Background Art

[0002] Automotive headlights are required to have both low-beam and high-beam functions. Therefore, current aftermarket headlights primarily use dual-beam modules, including low-beam and high-beam modules, both of which are LED light sources. Compared to traditional incandescent and halogen lamps, these modules offer advantages such as compact size, long lifespan, low energy consumption, and greater energy efficiency and environmental friendliness. Consequently, market demand for LED headlights is growing.

[0003] Because the LED modules inside LED headlights generate high temperatures during operation, and heat accumulates, causing luminous efficiency to decrease and even rapid aging and failure of the modules, affecting light intensity, the requirements for heat dissipation are more stringent. The main structure of headlights currently on the market is to fix the LED module to the heat sink, then install a shell on the outside, with a gap between the shell and the heat sink. As a result, the heat generated by the LED module is first transferred to the heat sink, then to the air in the gap between the shell and the heat sink, and then to the shell, and then to the outside air. Because this method of heat conduction requires transfer through the air gap between the shell and the heat sink, the high thermal resistance of air and its poor heat conduction ability result in low heat dissipation efficiency, which affects the service life of the LED module. Summary of the Invention

[0004] The purpose of the utility model is to provide a closed automobile headlamp to solve the problems existing in the above-mentioned prior art. When dissipating heat from the LED module, the heat generated by the LED module can be dissipated directly into the outside air through the housing after being dissipated by the radiator, thereby avoiding heat conduction in the air inside the housing, improving the heat dissipation efficiency, and ensuring the service life of the LED module.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The utility model provides a closed automobile headlamp, comprising a shell and a radiator, an LED light source module and a reflector which are sequentially arranged in the shell, the radiator comprising a low beam radiator and a high beam radiator, the LED light source module comprising a low beam light source module and a high beam light source module and a driving plate for driving the low beam light source module and the high beam light source module, the reflector comprising a low beam reflector and a high beam reflector, the low beam light source module being arranged between the low beam radiator and the low beam reflector and abutting against the low beam radiator, the high beam light source module being arranged between the high beam radiator and the high beam reflector and abutting against the high beam radiator, the outer side wall of the low beam radiator away from the middle part of the shell abutting against the inner side wall of the shell, the outer side wall of the high beam radiator away from the middle part of the shell abutting against the inner side wall of the shell, the low beam radiator being provided with a low beam radiator bracket, the low beam radiator bracket being provided with a light baffle, and the light baffle being covered with a lens.

[0007] Preferably, a low beam radiator groove is provided on one side of the low beam radiator close to the middle of the shell, and the low beam light source module is snapped into the low beam radiator groove. A high beam radiator groove is provided on one side of the high beam radiator close to the middle of the shell, and the high beam light source module is snapped into the high beam radiator groove.

[0008] Preferably, the driving plate is connected to the rear cover, the rear cover is connected to the housing, and a first sealing ring is provided at the connection between the rear cover and the housing.

[0009] Preferably, the lens is snap-connected to the upper end of a lens bracket, and the lens bracket is connected to the housing.

[0010] Preferably, the outer cover of the lens is provided with a lampshade, the lampshade is connected to a lampshade bracket, the lampshade bracket is sleeved on the outside of the lens bracket, and the lower end of the lampshade bracket is connected to the shell.

[0011] Preferably, a second sealing ring is provided at the connection between the lampshade bracket and the housing.

[0012] Preferably, the light emitted by the low beam light source module passes through the low beam reflector, and the reflected light is adjusted by the light baffle, and then emitted through the lens to form a low beam light pattern; the light emitted by the high beam light source passes through the high beam reflector, and the reflected light is emitted through the lens to form a high beam light pattern.

[0013] Preferably, a rear cover center hole is provided at the bottom of the rear cover, and the connecting rod of the driving plate passes through the rear cover center hole for connection with an external vehicle.

[0014] Preferably, the bottom surface of the rear cover is provided with a rear cover reinforcement rib, the outer side wall of the shell abutting the low beam radiator is provided with a first shell reinforcement rib, and the outer side wall of the shell abutting the high beam radiator is provided with a second shell reinforcement rib.

[0015] Preferably, the rear cover, the housing, the lampshade bracket and the lampshade are connected as one body so that the automobile headlamp is a closed type.

[0016] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0017] 1. The enclosed automobile headlamp provided by the present invention has the low-beam radiator and the high-beam radiator directly abutting the inner side wall of the housing. When the low-beam light source module and the high-beam light source module generate heat during illumination, the heat is first dissipated through the low-beam radiator and the high-beam radiator respectively. Since the low-beam radiator and the high-beam radiator are directly abutting the housing, the low-beam radiator and the high-beam radiator conduct the heat directly to the housing, and the housing then conducts the heat to the outside air. Compared with the low-beam radiator and the high-beam radiator in the prior art, which need to conduct the heat to the air in the gap between them and the housing before conducting it to the housing, the low-beam radiator and the high-beam radiator in this setting conduct the heat directly to the housing, avoiding heat conduction through the air inside the housing, improving the heat dissipation efficiency, and ensuring the service life of the LED module.

[0018] 2. The enclosed automobile headlamp provided by the present invention has an upper opening at the upper end of the rear cover, which is connected to the lower opening of the housing, thereby achieving the closure of the lower portion of the housing. A lampshade is provided on the outer cover of the lens, which is snap-fitted to the upper end of the lampshade bracket, thereby enclosing the upper portion of the lampshade bracket. The lampshade bracket is sleeved on the exterior of the lens bracket, and the lower end of the lampshade bracket is fixedly connected to the outer connection portion of the housing via screws. The arrangement of the lampshade and the lampshade bracket protects the lens and the components inside the housing. Furthermore, the rear cover, housing, lampshade bracket, and lampshade are connected as one, making the automobile headlamp an integrally enclosed type, reducing the ingress of dust and other debris into the interior of the lamp, extending the service life of the components inside the lamp, and making the lamp more aesthetically pleasing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the enclosed automobile headlamp in the present utility model;

[0021] Figure 2 This is a schematic diagram of the exploded structure of the enclosed automobile headlamp in the present utility model;

[0022] Figure 3 This is a schematic diagram of the exploded structure of the enclosed automobile headlamp in the present utility model;

[0023] Figure 4 This is a schematic cross-sectional view of the enclosed automobile headlamp of the present invention;

[0024] In the figure: 1-shell, 2-shell upper opening, 3-shell lower opening, 4-low beam radiator, 5-low beam radiator groove, 6-low beam light source module, 7-high beam radiator, 8-high beam radiator groove, 9-high beam light source module, 10-low beam reflector, 11-high beam reflector, 12-low beam radiator bracket, 13-light baffle, 14-lens, 15-drive plate, 16-rear cover, 17-rear cover upper opening, 18-first sealing ring, 19-rear cover center hole, 20-connecting rod, 21-lens bracket, 22-inner connecting part, 23-outer connecting part, 24-lampshade, 25-lampshade bracket, 26-second sealing ring, 27-rear cover reinforcement rib, 28-first shell reinforcement rib, 29-second shell reinforcement rib. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] The utility model provides a closed automobile headlamp, such as Figures 1-4As shown, the enclosed automobile headlamp includes a housing 1, which is cylindrical and has an upper opening 2 and a lower opening 3. A low-beam radiator 4, a high-beam radiator 7, a low-beam reflector 10, a high-beam reflector 11, a low-beam light source module 6, and a high-beam light source module 9 are all disposed within the housing 1. A low-beam radiator groove 5 is provided on the side of the low-beam radiator 4 near the middle of the housing 1. The low-beam light source module 6 snaps into and abuts against the low-beam radiator groove 5, and the two are secured together with screws to increase the stability of the device. A high-beam radiator groove 8 is provided on the side of the high-beam radiator 7 near the middle of the housing 1. The high-beam light source module 9 snaps into and abuts against the high-beam radiator groove 8, and the two are secured together with screws to increase the stability of the device. The inner sidewalls of the housing 1 are matched with the low-beam radiator 4 and the high-beam radiator 7, respectively, so that the outer sidewall of the low-beam radiator 4 away from the middle of the housing 1 abuts against the inner sidewall of the housing 1, and the outer sidewall of the high-beam radiator 7 away from the middle of the housing 1 also abuts against the inner sidewall of the housing 1, and are fixed with screws to increase the stability of the device. By directly abutting the low-beam radiator 4 and the high-beam radiator 7 against the inner sidewall of the housing 1, when the low-beam light source module 6 and the high-beam light source module 9 generate heat during irradiation, the heat is first dissipated through the low-beam radiator 4 and the high-beam radiator 7, respectively. Since the low-beam radiator 4 and the high-beam radiator 7 are directly abutted against the housing 1, the low-beam radiator 4 and the high-beam radiator 7 directly transfer the heat to the housing 1, and the housing 1 then transfers the heat to the outside air. Compared with the prior art in which the low beam radiator 4 and the high beam radiator 7 need to transfer heat to the air in the gap between them and the shell 1 before transferring it to the shell 1, the low beam radiator 4 and the high beam radiator 7 in this setting transfer heat directly to the shell 1, avoiding heat transfer in the air inside the shell 1, improving the heat dissipation efficiency, and ensuring the service life of the LED module.

[0028] In this embodiment, the side of the low-beam light source module 6 near the middle of the housing 1 is fixedly connected to the low-beam reflector 10, and the side of the high-beam light source module 9 near the middle of the housing 1 is fixedly connected to the high-beam reflector 11. The low-beam radiator 4 is provided with a low-beam radiator bracket 12, and a light shield 13 is fixedly connected to the low-beam radiator bracket 12 via screws. The light shield 13 is bent in the middle and located above the low-beam reflector 10 and the high-beam reflector 11. The light shield 13 is covered with a lens 14. The low-beam light source module 6 emits light, which is reflected by the low-beam reflector 10. The bent light shield adjusts the reflected light, blocking some of the direct light so that it does not directly hit oncoming vehicles to avoid glare, forming a low-beam light pattern. The high-beam light source module 9 emits light, which is reflected by the high-beam reflector 11 to form a high-beam pattern, thereby forming the high-beam pattern and the low-beam pattern of the vehicle headlight. The high-beam pattern and the low-beam pattern can be switched according to actual needs. It should be noted that the formation of the low-beam pattern and the high-beam pattern are both existing structures and will not be repeated here.

[0029] In this embodiment, the driving plate 15 that drives the low-beam light source module 6 and the high-beam light source module 9 is fixedly connected to the bottom of the rear cover 16. The two are fixed by screws to achieve the stability of the device. The upper end of the rear cover 16 has a rear cover upper opening 17, and the rear cover upper opening 17 is connected to the lower opening 3 of the shell body, thereby achieving the closedness of the lower part of the shell body 1. A first sealing ring 18 is provided at the connection between the rear cover upper opening 17 and the shell body lower opening 3, which can reduce the entry of dust into the interior of the car headlight and extend the service life of the components in the lamp. A rear cover center hole 19 is provided at the bottom of the rear cover 16. The connecting rod 20 of the driving plate 15 passes through the rear cover center hole 19 for connecting to the vehicle outside to realize the application of the car headlight on the vehicle.

[0030] In this embodiment, the lens 14 is snapped onto the upper end of the lens holder 21 to seal the upper end of the lens holder 21. The housing upper opening 2 is provided with an inner connecting portion 22 and an outer connecting portion 23. The lens holder 21 is fixedly connected to the inner connecting portion 22 of the housing 1 by screws to seal the upper portion of the housing 1. The outer cover of the lens 14 is provided with a lampshade 24. The lampshade 24 is snapped onto the upper end of a lampshade holder 25 to seal the upper portion of the lampshade holder 25. The lampshade holder 25 is sleeved onto the exterior of the lens holder 21. The lower end of the lampshade holder 25 is fixedly connected to the outer connecting portion 23 of the housing 1 by screws. The arrangement of the lampshade 24 and the lampshade holder 25 protects the lens 14 and the components within the housing 1. The rear cover 16, the housing 1, the lampshade holder 25, and the lampshade 24 are connected as one body, resulting in a completely enclosed vehicle headlamp. This reduces the ingress of dust and other debris into the interior of the headlamp, extends the service life of the components within the headlamp, and enhances the appearance of the headlamp. A second sealing ring 26 is provided at the connection between the lampshade bracket 25 and the outer connecting portion 23 of the upper opening 2 of the housing, which further ensures the sealing of the automobile headlamp, reduces dust from entering the interior of the automobile headlamp, and ensures the service life of the components inside the lamp.

[0031] In this embodiment, a rear cover reinforcement rib 27 is provided on the bottom surface of the rear cover 16, a first shell reinforcement rib 28 is provided on the outer wall of the shell 1 abutting the low beam radiator 4, and a second shell reinforcement rib 29 is provided on the outer wall of the shell 1 abutting the high beam radiator 7. By providing the reinforcement ribs, while ensuring the strength of the lamp shell 1 itself, the heat inside the shell 1 is more easily conducted to the outside air, thereby accelerating the heat dissipation.

[0032] This utility model uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only used to help understand the method and core concept of this utility model. At the same time, for those skilled in the art, according to the concept of this utility model, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A sealed automobile headlamp, comprising a housing, a heat sink, an LED light source module, and a reflector sequentially disposed within the housing, characterized in that: The radiator includes a low beam radiator and a high beam radiator, the LED light source module includes a low beam light source module and a high beam light source module and a driving plate for driving the low beam light source module and the high beam light source module, the reflector includes a low beam reflector and a high beam reflector, the low beam light source module is arranged between the low beam radiator and the low beam reflector and abuts the low beam radiator, the high beam light source module is arranged between the high beam radiator and the high beam reflector and abuts the high beam radiator, the outer side wall of the low beam radiator away from the middle of the shell abuts the inner side wall of the shell, the outer side wall of the high beam radiator away from the middle of the shell abuts the inner side wall of the shell, the low beam radiator is provided with a low beam radiator bracket, the low beam radiator bracket is provided with a light baffle, and the light baffle is covered with a lens.

2. The enclosed automobile headlamp according to claim 1, characterized in that: A low beam radiator groove is provided on one side of the low beam radiator close to the middle of the shell, and the low beam light source module is snapped into the low beam radiator groove. A high beam radiator groove is provided on one side of the high beam radiator close to the middle of the shell, and the high beam light source module is snapped into the high beam radiator groove.

3. The enclosed automobile headlamp according to claim 1, characterized in that: The driving plate is connected to the rear cover, the rear cover is connected to the housing, and a first sealing ring is provided at the connection between the rear cover and the housing.

4. The enclosed automobile headlamp according to claim 3, characterized in that: The lens is clamped to the upper end of the lens bracket, and the lens bracket is connected to the housing.

5. The enclosed automobile headlamp according to claim 4, characterized in that: The outer cover of the lens is provided with a lampshade, the lampshade is connected to a lampshade bracket, the lampshade bracket is sleeved on the outside of the lens bracket, and the lower end of the lampshade bracket is connected to the shell.

6. The enclosed automobile headlamp according to claim 5, characterized in that: A second sealing ring is provided at the connection between the lampshade bracket and the housing.

7. The sealed automobile headlamp according to claim 1, characterized in that: After the light emitted by the low beam light source module passes through the low beam reflector, the reflected light is adjusted by the light baffle, and then emitted through the lens to form a low beam light pattern; after the light emitted by the high beam light source passes through the high beam reflector, the reflected light is emitted through the lens to form a high beam light pattern.

8. The enclosed automobile headlamp according to claim 3, characterized in that: A rear cover center hole is provided at the bottom of the rear cover, and the connecting rod of the driving plate passes through the rear cover center hole for connecting with an external vehicle.

9. The enclosed automobile headlamp according to claim 8, characterized in that: The bottom surface of the rear cover is provided with a rear cover reinforcement rib, the outer side wall of the shell abutting the low beam radiator is provided with a first shell reinforcement rib, and the outer side wall of the shell abutting the high beam radiator is provided with a second shell reinforcement rib.

10. The sealed automobile headlamp according to claim 5, characterized in that: After the rear cover, the housing, the lampshade bracket and the lampshade are connected as one, the automobile headlamp is a closed type.

Images