Variable light type headlamp module and automobile headlamp

Abstract

The utility model relates to the technical field of automobile headlamps, in particular to a variable light type headlamp module and an automobile headlamp, which comprises a plurality of low-beam light sources, a plurality of high-beam light sources and a plurality of condensers, the inner lens group and the outer lens are sequentially arranged in the central axis direction of the condenser; wherein the inner lens group comprises a low-beam lens group and a high-beam lens group; a light shape baffle is further arranged between the condenser and the low-beam lens set. Each of the low-beam lens group and the high-beam lens group comprises a plurality of lenses, the plurality of lenses are arranged in the left-right direction of the module, the incident surface, facing the condenser, of each lens is a plane, and the emergent surface, facing the outer lens, of each lens is a convex cambered surface; the intersection point of the central axis of the condenser and the protruding cambered surface is used as a tangent line of the protruding cambered surface, and the included angle between the tangent line and the central axis of the condenser is gradually increased from the left side and the right side of the module to the middle of the module. The effect that the multiple light sources are arranged without increasing the size of the outer lens in the left-right direction of the module can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of automotive headlight technology, specifically to a variable beam headlight module and an automotive headlight. Background Technology

[0002] Headlights are installed on both sides of the front of a car for road illumination. The headlight optical system mainly consists of a bulb, a reflector, and a lens.

[0003] Chinese utility model patent CN220728003U discloses an automotive headlight, an automotive headlight system, and an automotive. The headlight includes: a mounting bracket; a light source matrix plate mounted on the mounting bracket, the light source matrix plate having several light source zones, each light source zone having at least one light source; and a total reflection lens matrix plate mounted on the mounting bracket, each total reflection lens matrix plate having the same number of total reflection lenses as the light source zones. In this application, the light source matrix plate provides sufficient and uniform light to the headlight, and a total reflection lens is provided for each light source, ensuring full emission of light from each light source.

[0004] Because the size of the headlight is limited, the size of the outer lens needs to be controlled within a reasonable range. However, in existing headlight technology, if multiple light-emitting particles are arranged along the left and right direction of the module, the size of the outer lens (i.e., the output lens) will increase accordingly. Utility Model Content

[0005] To address the problem that arranging multiple light-emitting particles along the left-right direction of the module in the existing technology leads to an increase in the size of the outer lens, the purpose of this utility model is to provide a variable beam headlight module and an automotive headlight.

[0006] The technical solution provided by this utility model is as follows:

[0007] Firstly, a variable beam headlight module includes multiple low beam light sources, multiple high beam light sources, and multiple concentrators;

[0008] Each concentrator corresponds one-to-one with a low-beam light source and a high-beam light source.

[0009] It also includes an inner lens group and an outer lens arranged sequentially along the central axis of the condenser; wherein, the inner lens group includes a low beam lens group and a high beam lens group; a beam pattern baffle is also provided between the condenser and the low beam lens group;

[0010] Both the low beam lens group and the high beam lens group include multiple lenses, which are arranged in the left and right direction of the module. The light-incident surface of the lens facing the condenser is a flat surface, and the light-outceasing surface of the lens facing the outer lens is a convex arc surface.

[0011] A tangent is drawn to the convex arc surface at the intersection of the central axis of the concentrator and the convex arc surface. From the left and right sides of the module to the middle of the module, the angle between the tangent and the central axis of the concentrator gradually increases.

[0012] As an optional technical solution in the first aspect, the included angle ranges from 20° to 90°.

[0013] As one optional technical solution in the first aspect, the dimension of the inner lens group in the front-back direction of the module is denoted as H1, and the dimension of the inner lens group in the left-right direction of the module is denoted as H2; wherein, the ratio of H2 to H1 ranges from 1.2 to 35.

[0014] Optionally, the value of H2 ranges from 30mm to 140mm; the value of H1 ranges from 4mm to 25mm.

[0015] As an optional technical solution in the first aspect, the light-shaped baffle is provided with a light and dark cutoff line structure; wherein, the light and dark cutoff line structure is provided with multiple inflection points.

[0016] Optionally, the focal point of the low beam lens group is approximately located at the inflection point; the focal point of the high beam lens group is on the same focal plane as the focal point of the low beam lens group, and this focal plane is approximately perpendicular to the front-back direction of the module.

[0017] Furthermore, in the front-rear direction of the module, the distance between the focal plane and the light-incident surface of the inner lens group is L1, 4mm≤L1≤35mm; the distance between the focal plane and the condenser is L2, 4mm≤L2≤35mm.

[0018] As one of the optional technical solutions in the first aspect, the low beam light source and the high beam light source are packaged from one or more LED particles.

[0019] Secondly, an automotive headlight includes the aforementioned headlight module.

[0020] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0021] The headlight module proposed in this utility model has its light source, inner lens group, and outer lens all arranged along the central axis of the concentrator, which can reduce the module's size in the vertical direction. Furthermore, both the low beam lens group and high beam lens group proposed in this application include multiple lenses. The lenses are arranged along the left-right direction of the module and correspond to the light source. The light emitted by the light source is refracted by the lens group and focused onto the incident surface of the outer lens, thus eliminating the need to increase the size of the outer lens along the left-right direction of the module. Attached Figure Description

[0022] Figure 1 This is a front view of a car headlight in one embodiment of this application;

[0023] Figure 2 As one embodiment of this application Figure 1 Sectional view along line AA;

[0024] Figure 3 This is a schematic diagram of the spacing L1 and L2 in one embodiment of this application;

[0025] Figure 4 As one embodiment of this application Figure 1 Sectional view along the BB direction;

[0026] Figure 5 This is a schematic diagram of dimensions H1 and H2 in one embodiment of this application.

[0027] Figure 6 This is a schematic diagram of a light baffle in one embodiment of this application;

[0028] Figure 7 This is a perspective view of the inner lens group in one embodiment of this application;

[0029] Figure 8 This is a perspective view of a car headlight in one embodiment of this application.

[0030] Explanation of the labels in the diagram:

[0031] Low beam light source 101, high beam light source 102, condenser 201, light pattern baffle 300, light and dark cutoff line structure 301, low beam lens group 401, high beam lens group 402, outer lens 501, housing 601. Detailed Implementation

[0032] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0033] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0034] In one embodiment, this application proposes a variable beam headlight module, which is used in automotive headlights to provide illumination. The headlight module proposed in this embodiment includes multiple low beam light sources 101 and multiple high beam light sources 102. The multiple low beam light sources 101 refer to the low beam system forming the low beam beam comprising multiple independent LEDs, each of which can be lit individually or simultaneously. Similarly, the multiple high beam light sources 102 refer to the high beam system forming the high beam beam comprising multiple independent LEDs, each of which can be lit individually or simultaneously.

[0035] As shown in Figure 6, multiple low-beam light sources 101 are arranged along the left-right direction of the module, meaning multiple LEDs emitting low beam light are arranged along the left-right direction of the module. Multiple high-beam light sources 102 are also arranged along the left-right direction of the module, meaning multiple LEDs emitting high beam light are arranged along the left-right direction of the module. In the vertical direction of the module, the high-beam light sources 102 are located to one side of the low-beam light sources 101, such as above or below. Figure 6 The image shows the high beam source 102 located below the low beam source 101.

[0036] In this embodiment, the headlight module also includes multiple concentrators 201. Each concentrator 201 corresponds to a low beam light source 101 and a high beam light source 102. In other words, since multiple concentrators 201 are provided, each high beam LED and each low beam LED corresponds to a concentrator 201. The light emitted by the LED is reflected by the reflective surface of the concentrator 201, thereby converging.

[0037] like Figure 2-5 As shown, on the light-emitting side of the condenser 201, an inner lens group and an outer lens 501 are arranged sequentially along the central axis of the condenser 201.

[0038] In this embodiment, as Figure 7 As shown, the inner lens group includes a low beam lens group 401 and a high beam lens group 402. The low beam lens group 401 corresponds to the low beam light source 101, and the high beam lens group 402 corresponds to the high beam light source 102.

[0039] Both the low beam lens group 401 and the high beam lens group 402 include multiple lenses, which are arranged in the left-right direction of the module. The light-incident surface of the lens facing the condenser 201 is a flat surface, and the light-outceasing surface of the lens facing the outer lens 501 is a convex arc surface. Since the low beam light source 101 and the high beam light source 102 in this application are arranged along the left-right direction of the module, when multiple LEDs are set, in order to avoid the outer lens 501 being too large, in this embodiment, a tangent line is drawn to the convex arc surface through the intersection of the central axis of the condenser 201 and the convex arc surface. From the left and right sides of the module to the middle of the module, the angle between the tangent line and the central axis of the condenser 201 gradually increases. Thus, the light emitted by the light source is refracted by the lens group and focused to the incident surface of the outer lens, thereby eliminating the need to increase the size of the outer lens along the left-right direction of the module.

[0040] As a preferred embodiment, the included angle ranges from 20° to 90°. For example... Figure 4 As shown, ∠a=50°, ∠b=80°, ∠c=89°.

[0041] To avoid making the module too large in its front-to-back and left-to-right dimensions, as an optional implementation method, such as Figure 5 As shown, the dimension of the inner lens group in the front-to-back direction of the module is denoted as H1, and the dimension of the inner lens group in the left-to-right direction of the module is denoted as H2; wherein, the ratio of H2 to H1 ranges from 1.2 to 35.

[0042] The value of H2 ranges from 30mm to 140mm, for example, 30mm, 32mm, 42mm, 50mm, or 80mm, etc. The value of H1 ranges from 4mm to 25mm, for example, 4mm, 6mm, 8mm, or 12mm, etc.

[0043] In one embodiment, a light-shaping baffle 300 is further provided between the condenser 201 and the low-beam lens group 401; that is, the light-shaping baffle 300 is only provided in the low-beam optical path. Figure 6 As shown, the light-shaped baffle 300 is provided with a light-dark cutoff line structure 301, and the light-dark cutoff line structure 301 has multiple inflection points. Through the light-dark cutoff line structure 301 provided by the light-shaped baffle 300, a light-dark cutoff line is formed in the near-light pattern.

[0044] The focal point of the low beam lens group 401 is approximately located at the inflection point, meaning that the focal point of the low beam lens group 401 can coincide with the inflection point or be within 2mm of the inflection point.

[0045] The focal point of the high beam lens group 402 and the focal point of the low beam lens group 401 are located in the same focal plane, which is approximately perpendicular to the front-to-back direction of the module. For example... Figure 3As shown, in the front-to-back direction of the module, the distance between the focal plane and the incident surface of the inner lens group is L1, and the value of L1 satisfies the following range: 4mm≤L1≤35mm. The distance between the focal plane and the condenser 201 is L2, and the value of L2 satisfies the following range: 4mm≤L2≤35mm.

[0046] The light source can be either a laser light chip or an LED light chip. When LEDs are chosen as the light-emitting particles, each light chip can be packaged from a single LED particle or from multiple LED particles.

[0047] In one embodiment, this application also proposes an automotive headlight, such as... Figure 1 , 8 As shown, the automotive headlight includes the aforementioned variable beam headlight module. The automotive headlight also includes a housing 601, in which the headlight module is installed. It should be noted that the components in the headlight module can be directly connected to the housing 601, or indirectly connected to the housing 601 through other connectors.

[0048] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A variable beam headlight module, comprising multiple low beam light sources (101), multiple high beam light sources (102), and multiple condensers (201); Its features are: The condenser (201) corresponds one-to-one with the low beam source (101) and the high beam source (102); It also includes an inner lens group and an outer lens (501) arranged sequentially along the central axis of the condenser (201); wherein, the inner lens group includes a low beam lens group (401) and a high beam lens group (402); a light-shaped baffle (300) is also provided between the condenser (201) and the low beam lens group (401); Both the low beam lens group (401) and the high beam lens group (402) include multiple lenses. The multiple lenses are arranged in the left and right direction of the module. The light-incident surface of the lens facing the condenser (201) is a plane, and the light-outceasing surface of the lens facing the outer lens (501) is a convex arc surface. A tangent is drawn to the raised arc surface at the intersection of the central axis of the condenser (201) and the raised arc surface. From the left and right sides of the module to the middle of the module, the angle between the tangent and the central axis of the condenser (201) gradually increases.

2. The variable beam headlight module according to claim 1, characterized in that: The included angle ranges from 20° to 90°.

3. The variable beam headlight module according to claim 1, characterized in that: The dimension of the inner lens group in the front-to-back direction of the module is denoted as H1, and the dimension of the inner lens group in the left-to-right direction of the module is denoted as H2; The ratio of H2 to H1 ranges from 1.2 to 35.

4. The variable beam headlight module according to claim 3, characterized in that: The value of H2 ranges from 30mm to 140mm; the value of H1 ranges from 4mm to 25mm.

5. The variable beam headlight module according to claim 1, characterized in that: The light-shaped baffle (300) is provided with a light and dark cutoff line structure (301); Among them, the light and dark cutoff line structure (301) has multiple inflection points.

6. The variable beam headlight module according to claim 5, characterized in that: The focal point of the low-light lens group (401) is approximately located at the inflection point; The focal point of the high beam lens group (402) and the focal point of the low beam lens group (401) are on the same focal plane, which is approximately perpendicular to the front-back direction of the module.

7. The variable beam headlight module according to claim 6, characterized in that: In the front-to-back direction of the module, the distance between the focal plane and the light-incident surface of the inner lens group is L1, 4mm≤L1≤35mm; the distance between the focal plane and the condenser (201) is L2, 4mm≤L2≤35mm.

8. The variable beam headlight module according to any one of claims 1 to 7, characterized in that: The low beam light source (101) and the high beam light source (102) are encapsulated from one or more LED particles.

9. A type of automotive headlight, characterized in that: Includes the variable beam headlight module as described in any one of claims 1 to 8.

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