Light shielding plate, low beam module, high beam and low beam integrated module and vehicle lamp

Abstract

According to the light shielding plate, the low beam module, the high beam and low beam integrated module and the vehicle lamp, the light shielding plate between the primary optical element and the light emitting element is provided with the penetrating opening and the III-area reflecting plate, and after light emitted by a light source is converged through the primary optical element, part of the light enters the penetrating opening and is reflected to the light emitting element by the III-area reflecting plate; and after the light is emitted and projected by the light emitting element, a low-beam III-area light type is formed. The structural design of the low-beam III-area light type is located on the light shielding plate, the light emitting element does not need to be changed, therefore, the appearance of the light emitting element is not affected, compared with an existing scheme that a microstructure is designed on a lens, the machining difficulty is greatly reduced, and the scheme does not damage the original optical effect of the lens.

Description

Technical Field

[0001] The present application belongs to the field of automobile lighting technology, and in particular relates to a sun visor, a low beam module, a high and low beam integrated module, and a headlight. Background Art

[0002] As an important exterior component of a car, headlights must not only be beautiful but also provide good lighting effects. In low-beam lighting, in order to ensure that drivers can better see road signs or street signs, it is often necessary to design a low-beam Zone III light pattern above the low-beam cutoff line. The regulations on automotive LED headlights (GB25991-2010) also have certain lighting requirements for the low-beam Zone III light pattern.

[0003] The existing Zone III structural design scheme often sets microstructures on the inner and outer surfaces of the lens, so that part of the low beam light is refracted upward through the microstructure area on the lens surface, forming a low beam Zone III light pattern.

[0004] However, creating a Zone III structure on the inner and outer surfaces of the lens to create a low-beam Zone III pattern can affect the lens' appearance. The Zone III structure is often visible from the front of the lens. Furthermore, microstructures on the lens often make it more difficult to ensure part machining accuracy, and the actual product processing state is unstable due to the influence of the lens material. The Zone III structure on the lens can also disrupt the original optical effect of the lens, affecting the uniformity and maximum brightness of the high and low beam patterns. Utility Model Content

[0005] The technical problem to be solved by this application is to provide a sun visor, a low beam module, an integrated high and low beam module and a car light, so as to solve the problem that the existing low beam zone III light pattern design scheme based on the lens microstructure causes processing difficulties, destroys the lens appearance and optical effect, and affects the uniformity and maximum brightness of the high and low beam light patterns.

[0006] To solve the above problems, the technical solution of this application is:

[0007] The sunshade of the present application is used in conjunction with a light source, a primary optical element and a light emitting element to form a low beam module.

[0008] A through opening is provided on the light shading plate, and a zone III reflector is provided at the through opening. After the light emitted by the light source is converged by the primary optical element, a portion of the light enters the through opening and is reflected by the zone III reflector, and then emitted by the light emitting element and projected to form a low beam zone III light pattern.

[0009] The sunshade of the present application has a through groove extending toward the primary optical element along the front-to-back direction based on its cut-off line structure, and the through opening is at least partially arranged on the through groove.

[0010] In the sunshade of the present application, along the front-to-back direction, the distance between the through opening and the light-emitting surface of the primary optical element ranges from 10 mm to 30 mm.

[0011] In the sunshade of the present application, the width of the through opening ranges from 5 mm to 15 mm.

[0012] In the light-shielding plate of the present application, the zone III reflector is deflected downward relative to the optical axis of the light-emitting element, and the angle formed by the zone III reflector and the optical axis of the light-emitting element is in the range of 10° to 30°.

[0013] The light shielding plate of the present application is deflected upward or downward relative to the optical axis of the light emitting element, and the angle formed by the light shielding plate and the optical axis of the light emitting element is in the range of 0° to 5°.

[0014] A low beam module of the present application comprises a light source, a primary optical element, a light emitting element and a light shield as described in any one of the above;

[0015] The light source is a low-beam light source;

[0016] The primary optical element is a low-beam concentrator;

[0017] The light emitting element is a lens;

[0018] A portion of the light emitted by the low beam light source is converged by the low beam concentrator, enters the through opening, and is reflected by the zone III reflector before being emitted by the lens and projected to form a low beam zone III light pattern. Another portion of the light is converged by the low beam concentrator, cut off by the shading plate, and then emitted by the lens and projected to form a low beam main light pattern.

[0019] In the low beam module of the present application, the light emitting surface of the low beam concentrator is provided with a zone III light emitting area, and the zone III light emitting area is configured to transmit light for forming the low beam zone III light pattern toward the through opening at a preset angle.

[0020] In the low beam module of the present application, the number of the low beam light sources is at least two, the number of the low beam concentrators is at least two, and one low beam concentrator corresponds to one or at least two low beam light sources.

[0021] The present application provides a high and low beam integrated module, comprising a high beam module and any one of the low beam modules described above;

[0022] The high beam module includes a high beam light source, a high beam concentrator and a lens;

[0023] The light emitted by the high-beam light source is converged by the high-beam concentrator and then emitted to the lens, and then projected through the lens to form a high-beam light pattern.

[0024] In the high and low beam integrated module of the present application, the number of high beam light sources is at least two, the number of high beam concentrators is at least two, and one high beam concentrator corresponds to one or at least two high beam light sources.

[0025] In the high and low beam integrated module of the present application, the low beam concentrator and the high beam concentrator are an integrally formed part.

[0026] In the integrated high and low beam module of the present application, the low beam module and the high beam module share the lens.

[0027] A vehicle lamp of the present application includes the low beam module described in any one of the above items or the high and low beam integrated module described in any one of the above items.

[0028] Due to the adoption of the above technical solution, this application has the following advantages and positive effects compared with the existing technology:

[0029] 1. One embodiment of the present application provides a through-opening and a Zone III reflector on a light shield between the primary optical element and the light-emitting element. Light emitted by the light source is converged by the primary optical element, partially entering the through-opening and reflected by the Zone III reflector toward the light-emitting element. The light-emitting element then emits and projects the low-beam Zone III light pattern. The structural design of the low-beam Zone III light pattern formed in this embodiment is located on the light shield, and the light-emitting element does not need to be modified, thus not affecting its appearance. Compared to existing solutions that design microstructures on lenses, this solution significantly reduces the processing difficulty and does not damage the original optical effect of the lens. This solution solves the problems of existing designs for low-beam Zone III light patterns based on lens microstructures, which result in processing difficulties, damage to the lens appearance and optical effect, and impact on the uniformity and maximum brightness of the high and low beam patterns.

[0030] 2. In one embodiment of the present application, the angle of the light reflected by the zone III reflector can be controlled by adjusting the angle of the zone III reflector, that is, the specific position of the light forming the low beam zone III light pattern projected onto the lens is changed, thereby controlling the height of the low beam zone III light pattern formed relative to the low beam main light pattern, so as to avoid glare caused by excessive energy above the low beam cutoff line, while meeting the GB25991-2010 low beam zone III regulations, and achieving an energy "white space" between the low beam main light pattern cutoff line and the low beam zone III light pattern. The energy of this white space, that is, the energy in the area from -0.57° to +1° at the "bathtub" of the low beam cutoff line is as weak as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural diagram of the sun visor, low beam module and high and low beam integrated module of this application;

[0032] Figure 2 This is a schematic diagram of the light path for forming the low beam zone III light pattern of this application;

[0033] Figure 3 A schematic structural diagram of the sunshade of this application;

[0034] Figure 4 Another structural schematic diagram of the sunshade of the present application;

[0035] Figure 5 A schematic diagram of the energy blanking area between the low beam main beam pattern and the low beam zone III beam pattern of this application;

[0036] Figure 6 This is a structural diagram of the high and low beam integrated module of this application.

[0037] Explanation of the reference numerals: 1. Primary optical element; 101. Low-beam concentrator; 1011. Zone III light-emitting area; 102. High-beam concentrator; 2. Sunshade; 201. Cut-off line structure; 202. Through opening; 203. Zone III reflector; 204. Through groove; 3. Lens; 4. Low-beam light source; 5. High-beam light source. DETAILED DESCRIPTION

[0038] The following is a detailed description of a sun visor, a low beam module, a high and low beam integrated module and a headlight proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims.

[0039] See Figures 1 to 5 An embodiment of the present application provides a sunshade, which is used in conjunction with a light source, a primary optical element 1, and a light-emitting element 3 to form a low-beam module, wherein the light source, the primary optical element 1, the sunshade 2, and the light-emitting element 3 are arranged in sequence along the light path.

[0040] The sunshade 2 has a through-opening 202 configured to receive a portion of the light emitted by the light source and converged by the primary optical element. A Zone III reflector 203 is positioned at the through-opening 202 to reflect the light received by the through-opening 202 toward the light emitting element 3, where it is emitted and projected to form the low-beam Zone III light pattern.

[0041] In one embodiment of the present application, a through-opening 202 and a zone III reflector 203 are provided on the light shield 2 between the primary optical element 1 and the light emitting element 3. Light emitted by the light source is converged by the primary optical element 1, partially entering the through-opening 202, and reflected by the zone III reflector 203 toward the light emitting element 3. The light emitting element 3 then emits and projects the low-beam zone III light pattern. The structural design of the low-beam zone III light pattern formed in this embodiment is located on the light shield 2, and the light emitting element 3 does not need to be modified, thus not affecting the appearance of the light emitting element 3. Compared to existing solutions that design microstructures on lenses, the manufacturing difficulty is greatly reduced, and the solution does not damage the original optical effect of the lens. This solution solves the problems of existing designs that form the low-beam zone III light pattern based on lens microstructures, which result in manufacturing difficulties, damage to the lens appearance and optical effect, and affect the uniformity and maximum brightness of the high and low beam light patterns.

[0042] The specific structure of the light shielding plate according to an embodiment of the present application is further described below:

[0043] See Figure 3 and Figure 4 In this embodiment, the through opening 202 and the zone III reflector 203 can be specifically opened at any position of the light shielding plate 2 .

[0044] Furthermore, the light shielding plate 2 has a through-slot 204 extending in the front-to-back direction toward the primary optical element 1 based on its cutoff structure 201. The through-opening 202 is at least partially disposed in the through-slot 204. From a physical structural perspective, to form the cutoff structure 201, the light shielding plate 2 is bent so that the edge of the light shielding plate 2 forms a bent cutoff structure 201, thereby creating the through-slot 204 along the front-to-back direction. The through-opening 202 is then arranged to correspond to the through-slot 204. By cutting the light shielding plate 2, a downwardly bent zone III reflector 203 is formed at the through-opening 202.

[0045] This arrangement is the simplest in terms of process feasibility, because the low beam zone III light pattern is usually above the cut-off line of the low beam main light pattern. The through opening 202 and the zone III reflector 203 are arranged corresponding to the cut-off line structure 201 and the through groove 204, and the angle requirement for the zone III reflector 203 can be reduced. If the zone III reflector 203 is arranged in other places of the shading plate 2, then in order to make the light forming the low beam zone III light pattern reach the required position, the zone III reflector 203 must be deflected to the left or right.

[0046] In this embodiment, the distance between the through-opening 202 and the light-emitting surface of the primary optical element 1 in the front-to-back direction ranges from 10 mm to 30 mm. The through-opening 202 can be rectangular, semicircular, or other shapes, as long as it allows light to pass through and reach the region III reflector 203. The width of the through-opening 202 ranges from 5 mm to 15 mm (this width is in the plane of the light-shielding plate 2 and perpendicular to the optical axis of the light-emitting element 3).

[0047] Furthermore, the zone III reflector 203 is deflected downward relative to the optical axis of the light emitting element 3 (i.e., as shown in the figure, the zone III reflector 203 is lower on the side near the light emitting element 3 and higher on the side near the low-beam concentrator 101), and the angle formed between the zone III reflector 203 and the optical axis of the light emitting element 3 ranges from 10° to 30°, so that the light reflected by the zone III reflector 203 can reach the desired low-beam zone III light pattern position. The light shielding plate 2 is deflected upward or downward relative to the optical axis of the light emitting element 3 (downward deflection means that the side near the light emitting element 3 is lower and the side near the low-beam concentrator 101 is higher, while upward deflection is the opposite), and the angle formed between the light shielding plate 2 and the optical axis of the light emitting element 3 ranges from 0° to 5°, so that the light forming the low-beam zone III light pattern can enter the through opening 202 of the light shielding plate 2.

[0048] In this embodiment, the reflective surface of the reflective plate 203 in zone III may be plated with aluminum to ensure the light reflection effect.

[0049] Another embodiment of the present application provides a low beam module, including a light source, a primary optical element 1 , a light emitting element 3 and the light shielding plate 2 in the above embodiment.

[0050] In this embodiment, the light source may be a low-beam light source 4, the primary optical element may be a low-beam concentrator 101, and the light-emitting element may be a lens. A portion of the light emitted by the low-beam light source 4 is focused by the low-beam concentrator 101, enters the through-opening 202, and is reflected by the zone III reflector 203 before being emitted by the lens and projected to form the low-beam zone III light pattern. Another portion of the light is focused by the low-beam concentrator 101, blocked by the light shield 2, and then emitted by the lens and projected to form the low-beam main light pattern.

[0051] This embodiment can realize the design of "blank space" in zone III, see Figure 5In this embodiment, the angle of the light reflected by the zone III reflector 203 can be controlled by adjusting the angle of the zone III reflector 203, that is, the specific position of the light forming the low beam zone III light pattern projected onto the lens is changed, thereby controlling the height of the low beam zone III light pattern formed relative to the low beam main light pattern, so as to avoid glare caused by excessive energy above the low beam cutoff line, while meeting the GB25991-2010 low beam zone III regulations, and achieving an energy "white space" between the low beam main light pattern cutoff line and the low beam zone III light pattern (the white space is that the energy in the area from -0.57° to +1° at the "bathtub" of the low beam cutoff line is as weak as possible).

[0052] Furthermore, taking the primary optical element as the low beam concentrator 101 as an example, the light-emitting surface of the low beam concentrator 101 can be provided with a zone III light-emitting area 1011, and the zone III light-emitting area 1011 is configured to transmit light for forming the low beam zone III light pattern at a preset angle toward the through opening 202, that is, by setting the zone III light-emitting area 1011 to adjust the refraction angle of the light forming the low beam zone III light pattern, and then control the amount of light that can reach the zone III reflector 203, so as to control the brightness of the low beam zone III light pattern, so as to prevent the low beam zone III light pattern from being too bright and not meeting regulatory requirements.

[0053] Furthermore, the zone III light emitting area 1011 is arranged corresponding to the through opening 202 and the zone III reflector 203 on the shading plate 2, and the zone III light emitting area 1011 is located above the shading plate 2, that is, the arrangement of the zone III light emitting area 1011, the through opening 202 and the zone III reflector 203 makes the light transmission efficiency of the low beam zone III light type higher.

[0054] In this embodiment, at least two low-beam light sources 4 may be provided, and the number of low-beam concentrators 101 may also be at least two, with one low-beam concentrator 101 corresponding to one or more low-beam light sources 4. The number of low-beam concentrators 101 and their corresponding low-beam light sources 4 may be adjusted based on the luminous flux required to form the low-beam main beam pattern and the low-beam zone III beam pattern to meet regulatory requirements.

[0055] See Figure 6 Another embodiment of the present application provides a high-beam and low-beam integrated module, which includes a high-beam module and the low-beam module in the above embodiment. The high-beam module includes a high-beam light source 5, a high-beam concentrator 102, and a lens. The low-beam concentrator 101 is configured to converge the light emitted by the low-beam light source 4 and direct it toward the lens, where it is emitted and projected to form a low-beam light pattern. The high-beam concentrator 102 is configured to converge the light emitted by the high-beam light source 5 and direct it toward the lens, where it is emitted and projected to form a high-beam light pattern.

[0056] In this embodiment, at least two high-beam light sources 5 can be provided, and the number of high-beam concentrators 102 can also be at least two, with one high-beam concentrator 102 corresponding to one or more high-beam light sources 5. The number of high-beam concentrators 102 and their corresponding high-beam light sources 5 can be adjusted based on the luminous flux required to form the high-beam light pattern to meet regulatory requirements.

[0057] Furthermore, the low beam concentrator 101 and the high beam concentrator 102 are integrally formed as a one-piece component. The high beam module and the low beam module can also be configured to share the same lens. The above configuration can simplify installation and reduce costs.

[0058] Another embodiment of the present application provides a vehicle lamp, including the low beam module or the integrated high and low beam module of the above-mentioned embodiment. The vehicle lamp is provided with a through opening 202 and a zone III reflector 203 on the visor 2 between the primary optical element 1 and the light emitting element 3. The light emitted by the light source is converged by the primary optical element 1 and partially enters the through opening 202. It is reflected by the zone III reflector 203 to the light emitting element 3, and is emitted and projected by the light emitting element 3 to form a low beam zone III light pattern. The structural design of the low beam zone III light pattern formed in this embodiment is located on the visor 2, and the light emitting element 3 does not need to be modified. Therefore, it does not affect the appearance of the light emitting element 3. Compared with the existing solution of designing microstructures on the lens, the processing difficulty is greatly reduced, and the solution will not destroy the original optical effect of the lens.

[0059] The embodiments of the present application are described in detail above with reference to the accompanying drawings, but the present application is not limited to the above embodiments. Even if various changes are made to the present application, if these changes fall within the scope of the claims of the present application and their equivalents, they will still fall within the scope of protection of the present application.

Claims

1. A sunshade, used in conjunction with a light source, a primary optical element, and a light emitting element to form a low beam module, characterized in that: A through opening is provided on the light shading plate, and a zone III reflector is provided at the through opening. After the light emitted by the light source is converged by the primary optical element, a portion of the light enters the through opening and is reflected by the zone III reflector, and then emitted by the light emitting element and projected to form a low beam zone III light pattern.

2. The sunshade according to claim 1, wherein: The shading plate has a through slot extending toward the primary optical element along a front-to-back direction with its cut-off line structure as a reference, and the through opening is at least partially disposed on the through slot.

3. The sunshade according to claim 1, wherein: Along the front-to-back direction, the distance between the through opening and the light-emitting surface of the primary optical element ranges from 10 mm to 30 mm.

4. The sunshade according to claim 1, wherein: The width of the through opening is in the range of 5 mm to 15 mm.

5. The sunshade according to claim 1, wherein: The zone III reflector is deflected downward relative to the optical axis of the light emitting element, and an angle formed between the zone III reflector and the optical axis of the light emitting element is in a range of 10° to 30°.

6. The sunshade according to claim 1, wherein: The light shielding plate is deflected upward or downward relative to the optical axis of the light emitting element, and an angle formed by the light shielding plate and the optical axis of the light emitting element is in a range of 0° to 5°.

7. A low beam module, characterized in that: comprising a light source, a primary optical element, a light emitting element and the light shielding plate according to any one of claims 1 to 6; The light source is a low-beam light source; The primary optical element is a low-beam concentrator; The light emitting element is a lens; A portion of the light emitted by the low beam light source is converged by the low beam concentrator, enters the through opening, and is reflected by the zone III reflector before being emitted by the lens and projected to form a low beam zone III light pattern. Another portion of the light is converged by the low beam concentrator, cut off by the shading plate, and then emitted by the lens and projected to form a low beam main light pattern.

8. The low beam module according to claim 7, wherein: The light emitting surface of the low beam concentrator is provided with a zone III light emitting area, and the zone III light emitting area is configured to transmit light for forming the low beam zone III light pattern toward the through opening at a preset angle.

9. The low beam module according to claim 8, characterized in that: There are at least two low-beam light sources, at least two low-beam concentrators, and one low-beam concentrator corresponds to one or at least two low-beam light sources.

10. A high and low beam integrated module, characterized in that: comprising a high beam module and a low beam module as claimed in any one of claims 7 to 9; The high beam module includes a high beam light source, a high beam concentrator and a lens; The light emitted by the high-beam light source is converged by the high-beam concentrator and then emitted to the lens, and then projected through the lens to form a high-beam light pattern.

11. The high and low beam integrated module according to claim 10, characterized in that: There are at least two high-beam light sources, at least two high-beam concentrators, and one high-beam concentrator corresponds to one or at least two high-beam light sources.

12. The high and low beam integrated module according to claim 10, characterized in that: The low beam concentrator and the high beam concentrator are an integrally formed part.

13. The high and low beam integrated module according to claim 10, characterized in that: The low beam module and the high beam module share the lens.

14. A vehicle lamp, characterized in that: The low beam module comprises any one of claims 7 to 9 or the high and low beam integrated module comprises any one of claims 10 to 13.

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