An auxiliary reflector for a vehicle headlamp and a headlamp comprising the same

Abstract

The application belongs to the field of optics, and discloses an auxiliary reflector for a car headlamp, which is arranged between a reflector and a light shield, and characterized in that the auxiliary reflector comprises a connecting body, a first reflecting surface and a second reflecting surface arranged on the connecting body in a position corresponding and opposite direction, and the first reflecting surface and the second reflecting surface are respectively integrated with the connecting body, wherein the first reflecting surface and the second reflecting surface reflect the light respectively irradiated thereon to the core reflecting area of the reflector, and then the light is reflected by the core reflecting area of the reflector and emitted through the lens, so that the light source utilization rate is improved and the brightness is improved.

Description

Technical Field

[0001] This invention belongs to the field of optics and relates to a vehicle lighting device, particularly to an auxiliary reflector for automotive headlights and a headlight including the reflector for switching between high and low beams. Background Technology

[0002] Traditional integrated high and low beam headlights require a light shield and a solenoid valve. The solenoid valve controls the light shield to switch between high and low beams. Because the light shield needs to block light and its position is fixed, some of the light energy in the headlight cannot be reflected and utilized by the reflector. Even in the high beam mode with the light shield open, some light is still blocked. Therefore, traditional headlights often have low high beam brightness or insufficient beam width, resulting in low overall efficiency. In addition, prolonged exposure of the blocked light to the motor can cause the motor and the entire lamp to overheat, shortening the motor's lifespan. Summary of the Invention

[0003] To address the problems of the prior art, embodiments of the present invention provide an auxiliary reflector for automotive headlights and a headlight including the reflector, which not only prevents the motor controlling the light shield from overheating, but also improves light utilization and increases headlight brightness.

[0004] To achieve the above objectives, one technical solution of the present invention is as follows:

[0005] An auxiliary reflector for automotive headlights is disposed between a reflector and a light shield. The auxiliary reflector includes a connecting body and a first reflective surface and a second reflective surface disposed on the connecting body in opposite directions and at corresponding positions. The first reflective surface and the second reflective surface are integrally formed with the connecting body.

[0006] As a preferred embodiment of the present invention, the first reflective surface is inclined at an obtuse angle to the upper surface of the connecting body.

[0007] As a preferred embodiment of the present invention, the second reflective surface is obtusely protruding from the lower surface of the connecting body via a connecting block, and the connecting block and the connecting body are at a preset angle of 60° to 80°.

[0008] As a preferred embodiment of the present invention, the second reflective surface is composed of a plurality of refractive surfaces that can refract light onto the core reflective region of the reflector.

[0009] As a preferred embodiment of the present invention, the refractive surface is a curved surface structure and / or a planar structure.

[0010] As a preferred embodiment of the present invention, a plurality of heat dissipation fins are provided in the middle position of the second reflective surface.

[0011] As a preferred embodiment of the present invention, a plurality of reinforcing ribs integrally formed with the second reflector are uniformly provided on the non-reflective surface of the second reflective surface.

[0012] As a preferred technical solution of the present invention, a plurality of reinforcing ribs integrally formed with the first reflective mirror are uniformly provided on the non-reflective surface of the first reflective surface.

[0013] As a preferred embodiment of the present invention, the second reflective surface is provided with alternating light and dark zebra stripes or squares.

[0014] As a preferred embodiment of the present invention, a third reflective surface is provided at both ends of the second reflective surface, and the third reflective surface is inclined to the connecting body and is integrated with the second reflective surface.

[0015] As a preferred embodiment of the present invention, the third reflecting surface is a curved reflecting mirror.

[0016] Another technical solution of the present invention:

[0017] A headlight includes a reflector, a motor, a light shield, a lens, and an auxiliary reflector as described in any one of claims 1-11. The auxiliary reflector is disposed between the reflector and the light shield, the lens is connected to the reflector via a lens bracket, and the motor is disposed on the backlight surface of the second reflective surface of the auxiliary reflector and connected to the light shield.

[0018] As a preferred technical solution of the present invention, the auxiliary reflector includes a connecting body and a first reflecting surface and a second reflecting surface disposed on the connecting body in opposite directions and at corresponding positions. The first reflecting surface and the second reflecting surface are integrally formed with the connecting body.

[0019] As a preferred embodiment of the present invention, the first reflective surface is inclined at an obtuse angle to the upper surface of the connecting body.

[0020] As a preferred embodiment of the present invention, the second reflective surface is obtusely protruding from the lower surface of the connecting body via a connecting block, and the connecting block and the connecting body are at a preset angle of 60° to 80°.

[0021] As a preferred embodiment of the present invention, the second reflective surface is composed of a plurality of refractive surfaces that can refract light onto the core reflective region of the reflector.

[0022] As a preferred embodiment of the present invention, the refractive surface is a curved surface structure and / or a planar structure.

[0023] As a preferred embodiment of the present invention, a plurality of heat dissipation fins are provided in the middle position of the second reflective surface.

[0024] As a preferred embodiment of the present invention, a plurality of reinforcing ribs integrally formed with the second reflector are uniformly provided on the non-reflective surface of the second reflective surface.

[0025] As a preferred technical solution of the present invention, a plurality of reinforcing ribs integrally formed with the first reflective mirror are uniformly provided on the non-reflective surface of the first reflective surface.

[0026] As a preferred embodiment of the present invention, the second reflective surface is provided with alternating light and dark zebra stripes or squares.

[0027] As a preferred embodiment of the present invention, a third reflective surface is provided at both ends of the second reflective surface, and the third reflective surface is inclined to the connecting body and is integrated with the second reflective surface.

[0028] As a preferred embodiment of the present invention, the third reflecting surface is a curved reflecting mirror.

[0029] Beneficial effects:

[0030] 1. The auxiliary reflector provided by the present invention is disposed between the reflector and the light shield, including a connecting body and a first reflective surface and a second reflective surface disposed on the connecting body in opposite directions and at corresponding positions. The first reflective surface and the second reflective surface are integrally formed with the connecting body. The first reflective surface and the second reflective surface reflect the light that is irradiated onto them to the core reflective area of ​​the reflector, and then reflect it through the lens by the core reflective area of ​​the reflector, thereby improving the utilization rate of the light source and improving the brightness.

[0031] 2. The auxiliary reflector provided by the present invention is disposed between the reflector and the light shield, including a connecting body and a first reflective surface and a second reflective surface disposed on the connecting body in opposite directions and at corresponding positions. The first reflective surface and the second reflective surface are respectively integrally formed with the connecting body. That is, the motor controlling the light shield is disposed on one of the reflective surfaces of the auxiliary reflector. The reflective surface not only refracts light but also blocks the light that can shine on the motor, thus realizing the effective utilization of light and blocking light and heat, preventing light from shining on the motor and improving the service life of the motor.

[0032] 3. In the technical solution of the present invention, the second reflective surface is provided with a plurality of heat dissipation fins in the middle position of the reflective surface. The heat dissipation fins can dissipate the light and heat irradiated onto the auxiliary reflector on the one hand, and dissipate the internal light and heat of the vehicle lamp on the other hand, thereby improving the service life of the vehicle lamp.

[0033] 4. In the technical solution of the present invention, the second reflective surface is composed of multiple refractive surfaces that can refract light onto the core reflective area of ​​the reflector, which can effectively improve the utilization rate of light. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is an exploded structural diagram of a headlight provided in this embodiment;

[0036] Figure 2 This is a rear view of the auxiliary reflector provided in this embodiment;

[0037] Figure 3 This is a bottom view of the auxiliary reflector provided in this embodiment;

[0038] Figure 4 This is a top view of the auxiliary reflector provided in this embodiment;

[0039] Figure 5 This is a left view of the auxiliary reflector provided in this embodiment;

[0040] Figure 6 This is provided in this embodiment. Figure 2 Enlarged view of range A in the middle;

[0041] Figure 7 This is a schematic diagram of beam reflection from the first reflecting surface provided in this embodiment;

[0042] Figure 8 This is a schematic diagram of beam reflection from the second reflecting surface provided in this embodiment;

[0043] Figure 9 This is a schematic diagram of the structure of the second reflective surface provided in Embodiment 2. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0045] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the implementation of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effectiveness and objectives of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "above," "below," "left," "right," "center," and "one" used in this specification are solely for clarity of description.

[0046] Example 1

[0047] This embodiment provides a headlight, including a light source, a reflector 1, a motor 2, a light shield 3, a lens 4, and an auxiliary reflector 5. The auxiliary reflector 5 is disposed between the reflector 1 and the light shield 3. The lens 4 is connected to the reflector 1 through a lens bracket 6. The motor 2 is disposed on the auxiliary reflector 5 and connected to the light shield 3 to control the opening and closing of the light shield, thereby realizing the high and low beam control of the headlight. The light source is disposed at the bottom of the reflector 1.

[0048] Specifically, refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, in this embodiment, the auxiliary reflector 5 includes a connecting body 51 and a first reflective surface 53 and a second reflective surface 52 disposed on the connecting body 51, which are correspondingly positioned and opposite in direction. The first reflective surface 53 and the second reflective surface 52 are integrally formed with the connecting body 51. Specifically, the motor 2 is disposed on the backlight surface of the second reflective surface 52. The first reflective surface 53 is obtusely disposed on the upper surface of the connecting body 51 at an obtuse angle. The second reflective surface 52 is obtusely disposed on the lower surface of the connecting body 51 through a connecting block 56. The connecting block 56 and the connecting body 51 are at a preset angle of 60° to 80°, thereby enabling the first reflective surface 53 and the second reflective surface 52 to reflect the light that is irradiated onto them to the core reflective area of ​​the reflector 1, and then reflect it through the lens from the core reflective area of ​​the reflector 1, thereby improving the utilization rate of the light source and increasing the brightness.

[0049] It should be noted that, as those skilled in the art know, the light emitted by the light source in the headlight is reflected by the reflector 1 and projected in a parallel straight line towards the lens. However, for the reflector, only the reflector at a depth of 28mm from the light source has a high light density, meaning the reflection area of ​​the reflector at a depth of 28mm from the light source is the effective reflection area. The reflection area of ​​the reflector outside the 28mm depth has sparse light, which does not provide substantial help to the light pattern and brightness of the headlight, and is therefore called an ineffective beam. In order to improve the utilization rate of the beam, the ineffective beam can be transformed into an effective beam through reflection and refraction. Therefore, the headlight in this embodiment is equipped with an auxiliary reflector, and the first reflecting surface 53 of the auxiliary reflector is located above the ineffective beam passage area of ​​the reflector, used to reflect the ineffective beam in this area to the effective reflection area, and then effectively utilize it after refraction in the effective reflection area. At the same time, it can also improve the brightness of the headlight and improve driving safety performance. (Refer to...) Figure 7 As shown, however, due to the light-blocking effect of the light-shielding plate and the beam requirements for both near and far beams, most of the beam below the light source is blocked by the light-shielding plate and becomes ineffective light. Therefore, in this embodiment, the second reflecting surface 52 of the auxiliary reflector is located in the ineffective beam passage area below the reflector. This portion of the beam is reflected by the second reflecting surface 52 to the effective reflection area above the reflector, and then effectively utilized after refraction by the effective reflection area of ​​the reflector. (Refer to...) Figure 8As shown, this also improves the brightness of the headlights and enhances driving safety. Therefore, the core reflective area in this embodiment is the effective reflective area above the reflector. In this embodiment, the headlights effectively utilize the ineffective beams in the headlights by setting up auxiliary reflectors, thereby improving beam brightness and beam stability, and ultimately achieving the goal of improving driving safety. In addition, the second reflective surface 52 blocks the light that can shine on the motor, which not only achieves effective utilization of light but also blocks light and heat, preventing light from shining on the motor and improving the service life of the motor.

[0050] Specifically, in this embodiment, the second reflective surface 52 is composed of multiple refractive surfaces 52a that can refract light onto the core reflective area of ​​the reflector, thereby ensuring that all invalid light beams passing through the second reflective surface 52 are reflected to the core reflective area, realizing full and effective utilization of the light source, and ultimately achieving the purpose of improving the lighting performance of the headlight. In this embodiment, the refractive surface 52a can be a planar structure or a curved structure, and each curved surface has a different curvature.

[0051] Furthermore, in this embodiment, the second reflective surface 52 is provided with a plurality of heat dissipation fins 55 in the middle position of the reflective surface. The heat dissipation fins 55 can dissipate the light and heat irradiated onto the auxiliary reflector on the one hand, and dissipate the internal light and heat of the vehicle lamp on the other hand, thereby improving the service life of the vehicle lamp.

[0052] Furthermore, in this embodiment, a plurality of reinforcing ribs 57 integrally formed with the second reflector are uniformly provided on the non-reflective surface of the second reflective surface; a plurality of reinforcing ribs 57 integrally formed with the first reflector are uniformly provided on the non-reflective surface of the first reflective surface. The reinforcing ribs 57 can also improve the heat dissipation surface of the headlight, improve the heat dissipation performance of the headlight, and thus improve the service life of the headlight.

[0053] It is worth noting that, in order to improve the heat dissipation performance of the headlight, the reflective surface of the second reflective surface 52 can be set with alternating light and dark zebra stripes or squares. That is, the bright areas can improve optical brightness, while the dark areas can absorb heat, and the heat dissipation performance of the headlight can be improved by increasing the outer surface of the auxiliary reflector.

[0054] In addition, in this embodiment, the second reflective surface 52 is provided with a third reflective surface 54 at both ends. The third reflective surface 54 is inclined to the connecting body 51 and is integrated with the second reflective surface 52. Specifically, the third reflective surface 54 is a curved reflector. The third reflective surface can effectively utilize the ineffective light beam, thereby reducing or eliminating the dark spot of the headlight and improving the optical performance of the headlight.

[0055] Example 2

[0056] refer to Figure 9As shown, the difference between this embodiment and embodiment 1 is that the second reflective surface 52 in this embodiment is composed of multiple reflective surfaces 52b with different curvatures, thereby ensuring that all invalid light beams passing through the second reflective surface 52 are reflected to the core reflective area, realizing full and effective utilization of the light source, and ultimately achieving the purpose of improving the lighting performance of the headlight.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An auxiliary reflector for a vehicle headlamp, the auxiliary reflector being disposed between a reflector and a visor, characterized in that, The auxiliary reflector comprises a connecting body, a first reflecting surface and a second reflecting surface arranged on the connecting body in corresponding positions and in opposite directions, and the first reflecting surface and the second reflecting surface are integrated with the connecting body; the second reflecting surface is arranged on the lower surface of the connecting body at an obtuse angle with the connecting body and is inclined and protruded by a connecting block, and the connecting block and the connecting body are provided at a preset angle of 60-80°; the second reflecting surface is composed of a plurality of refracting surfaces capable of refracting light to the core reflecting area of the reflector; the first reflecting surface is arranged in the invalid light beam passing area above the reflector, and is used for reflecting the invalid light beam in the area to the effective reflecting area, and then the invalid light beam is effectively utilized after being refracted by the effective reflecting area; and the second reflecting surface is arranged in the invalid light beam passing area below the reflector, and the part of the light beam is reflected to the effective reflecting area above the reflector after being reflected by the second reflecting surface, and then the light beam is effectively utilized after being refracted by the effective reflecting area of the reflector.

2. The auxiliary reflector for an automobile headlamp according to claim 1, characterized by The first reflecting surface is arranged on the upper surface of the connecting body at an obtuse angle with the connecting body.

3. The auxiliary reflector for an automotive headlamp according to claim 1, characterized by, The refracting surface is a curved surface structure and / or a plane structure.

4. The auxiliary reflector for an automotive headlamp according to claim 1, characterized by, A plurality of heat dissipation fins are arranged at the middle position of the reflecting surface of the second reflecting surface.

5. The auxiliary reflector for an automotive headlamp according to claim 1, wherein A plurality of reinforcing ribs integrated with the second reflector are uniformly arranged on the non-reflecting surface of the second reflecting surface.

6. The auxiliary reflector for an automotive headlamp according to claim 1, characterized by, A plurality of reinforcing ribs integrated with the first reflector are uniformly arranged on the non-reflecting surface of the first reflecting surface.

7. The auxiliary reflector for an automotive headlamp according to claim 1, characterized by, A zebra pattern or a checkered pattern with light and shade is arranged on the reflecting surface of the second reflecting surface.

8. The auxiliary reflector for an automotive headlamp according to claim 1, characterized by, Third reflecting surfaces are further arranged at both ends of the second reflecting surface, and the third reflecting surfaces are arranged at an obtuse angle with the connecting body and are integrated with the second reflecting surface.

9. The auxiliary reflector for the automobile headlamp according to claim 8, wherein the third reflecting surface is a curved surface reflector.

10. A headlamp characterized by comprising: The auxiliary reflector comprises a reflector, a motor, a light shield, a lens, and the auxiliary reflector according to any one of claims 1-9, the auxiliary reflector is arranged between the reflector and the light shield, the lens is connected with the reflector through a lens support, and the motor is arranged on the back surface of the second reflecting surface of the auxiliary reflector and is connected with the light shield.

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