Automobile blind area lane changing warning lamp module structure

Abstract

The invention relates to an automobile blind area lane-changing warning lamp module structure, which is characterized in that a warning lamp module is arranged at a position where a lane-changing warning lamp pattern is arranged on the back surface of a rearview mirror lens, and comprises a circuit board which is configured as a man-machine interaction interface and is used for receiving an external electric signal and providing visual state information; the optical module comprises at least one group of optical units and is used for displaying a corresponding warning lamp pattern in the target observation area; the shell is made of a non-transparent material, is arranged on the outer surface of the warning lamp module and is used for realizing sealing and preventing light leakage; the front cover and the shell form a cavity structure and are used for containing the optical module and the circuit board, a light outlet is formed in the front cover, and the light outlet is made of semitransparent or transparent materials and is used for sealing the cavity structure. The car blind area lane changing warning lamp module structure is small in size, and the uniformity of warning lamp patterns in a target area range is good.

Description

TECHNICAL FIELD

[0001] The present application relates to optical design, especially to the design of a lane change warning light for a vehicle, in particular to a lane change warning light module structure for a vehicle. BACKGROUND

[0002] The current mainstream optical design scheme of the lane change warning light for a vehicle usually includes two kinds: Scheme 1: Direct irradiation scheme of light source (usually LED), the feature of which is that the angle between the optical axis of the LED and the normal of the product light emitting surface is usually a small acute angle. The optical principle of this scheme is that the light directly emitted by the LED includes a part of light that is affected by the optical structure (such as reflector, light guide, lens, etc.), and through the outer light diffusion film, a light emitting surface with high brightness is generated. This scheme has the advantages of high efficiency, small size, simple structure and low cost. Its disadvantage is that a light diffusion film with strong diffusion needs to be configured to optimize the brightness uniformity of the light emitting surface, which causes a certain intensity of light signal in the non-target area (the target area refers to the driver's visual area) of the product, affecting other traffic participants.

[0003] Scheme 2: Indirect projection scheme of light source (usually LED), the feature of which is that the angle between the optical axis of the LED and the normal of the product light emitting surface is large, and the light emitted by the LED is mainly transmitted to the light emitting surface through the optical structure. The optical principle of this scheme is that the light emitted by the LED is opposite to or side to the light emitting surface, and is usually transmitted to the light diffusion film of the light emitting surface through the form of reflector or light guide. By designing the optical surface of the reflector or light guide, the light emitted by the product can be limited within a certain spatial range. This scheme has the advantage of strong directivity of light, but in order to ensure the directivity of the light emitted by the product, a light diffusion film with high light uniformity cannot be selected, resulting in poor brightness uniformity of the light emitting surface of the product.

[0004] In summary, the energy utilization rate of scheme 1 is high, but a light diffusion film with good light uniformity needs to be configured to optimize the brightness uniformity and reduce the brightness value of the light emitting surface, resulting in the formation of light signal in the non-target area of the product, which interferes with other traffic participants. Scheme 2 can make the light emitted by the light emitting surface have good directivity without using a light diffusion film with strong light uniformity, but the brightness uniformity of the light emitting surface is thus impaired.

[0005] The above-mentioned prior art has a pair of contradictory points between the brightness uniformity of the product light emitting surface and the directivity of the product output light signal, and the reason is that the brightness uniformity of the product light emitting surface depends on the light diffusion film of the light emitting surface. Therefore, how to effectively overcome the defects of the prior art is a technical problem to be solved by the present technical scheme. SUMMARY

[0006] The application aims to overcome the above-mentioned defects of the prior art and provide a vehicle blind area lane changing warning light module structure.

[0007] In order to achieve the above-mentioned purpose, the vehicle blind area lane changing warning light module structure of the application is as follows: The vehicle blind area lane changing warning light module structure mainly has the following characteristics: the warning light module is installed on the back of a rearview mirror lens, and a warning light pattern is arranged on a light-emitting surface, and comprises: A circuit board is configured as a man-machine interactive interface, used for receiving external electrical signals and providing visual state information; An optical module comprises at least one set of optical units, used for displaying a corresponding warning light pattern in a target observation area; A shell is made of non-transparent material, arranged on the outer surface of the warning light module, used for sealing and preventing light leakage; and A front cover forms a cavity structure with the shell, used for accommodating the optical module and the circuit board, and an optical outlet is arranged on the front cover, made of translucent or transparent material, used for sealing the cavity structure.

[0008] Preferably, one set of the optical units comprises: An LED assembly is arranged on the circuit board; A lens group is arranged below the cavity structure, composed of a uniform collimating lens array made of transparent material, and the optical axis of the uniform collimating lens array coincides with the LED light-emitting optical axis, used for converting the light emitted by the LED assembly into light parallel to the LED light-emitting optical axis; A reflector is arranged above the lens group and is coated with aluminum on a reflecting surface, used for reflecting the uniform collimated light output by the lens group to the target observation area according to a required diffusion angle.

[0009] Preferably, the reflector is composed of a plurality of reflector units and connecting structures, wherein a connecting structure is arranged between two adjacent reflector units; the reflector unit is composed of a reflecting surface pattern array, and each reflecting surface pattern array is arranged in a vertical direction in a tile type arrangement.

[0010] Preferably, the reflecting surface pattern array is composed of a plurality of reflecting surface patterns with the same or different designs.

[0011] Preferably, the reflecting surface pattern reflects light in the following way: The upper left corner of the reflecting surface reflects the light to the upper right corner of the target observation area; the upper right corner of the reflecting surface reflects the light to the upper left corner of the target observation area; the lower left corner of the reflecting surface reflects the light to the lower right corner of the target observation area; the lower right corner of the reflecting surface reflects the light to the lower left corner of the target observation area; and the rest of the reflecting surface pattern corresponds to the reflected light obtained by interpolation from the four corner points.

[0012] Preferably, the optical module projects a plurality of rectangular unit arrays along the LED light axis, and the main projection direction of the optical module is along the reflection direction of the reflecting surface pattern array.

[0013] Preferably, the main projection direction is parallel to the normal direction of the rearview mirror lens at the warning light pattern in the horizontal plane.

[0014] Preferably, the circuit board is used to receive electrical signals from an external system through a connector and provide visual state information corresponding to the electrical signals to a user.

[0015] Preferably, the visual state information includes: Driving at least one LED component to light up, turn off, or flash.

[0016] The automobile blind area lane changing warning light module structure of the present application effectively overcomes the problem that the prior art cannot simultaneously satisfy the uniformity of product light emitting surface brightness and the directivity of product output light signal, and not only has a small overall size, but also has good uniformity of the warning light pattern in the target area range in actual application, can ensure that the light source is basically concentrated in the target observation area, and has a more prominent application effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the installation of the automobile blind area lane changing warning light module structure of the present application.

[0018] Figure 2 The figure is an exploded view of the automobile blind area lane changing warning light module structure of the present application.

[0019] Figure 3 The figure is a sectional view of the automobile blind area lane changing warning light module structure of the present application in the A-A direction.

[0020] Figure 4 The figure is a conceptual diagram of the optical module of the automobile blind area lane changing warning light module structure of the present application in the LED light axis direction.

[0021] Figure 5 The figure is a schematic diagram of the projection of the target observation area of the automobile blind area lane changing warning light module structure of the present application in the horizontal plane.

[0022] Figure 6 This is a schematic diagram of the lens assembly of the blind spot lane change warning light module structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the optical path principle of the blind spot lane change warning light module structure of the present invention.

[0024] Figure 8 This is a schematic diagram of the optical module of the blind spot lane change warning light module structure of the present invention.

[0025] Figure 9 This is a schematic diagram showing the arrangement range of the reflectors in the blind spot lane change warning light module structure of the present invention.

[0026] Figure 10 This is a schematic diagram of the reflected light path principle of the reflective surface of the blind spot lane change warning light module structure of the present invention.

[0027] Figure 11 This is a schematic diagram of the reflector structure of the blind spot lane change warning light module of the present invention.

[0028] Figure 12 This is a schematic diagram showing the reflectors of the blind spot lane change warning light module structure of the present invention arranged in a tile-like pattern in the vertical direction.

[0029] Figure 13 This is a rendering of the blind spot lane change warning light module structure of the present invention in a specific embodiment.

[0030] Figure 14 This is another rendering of the blind spot lane change warning light module structure of the present invention in a specific embodiment. Attached Figure

[0031] 1 circuit board 1-1 LED Components 1-2 LED light-emitting optical axis 2 shells 3 front cover 3-1 Light outlet 4 lens groups 4-1 Uniform Collimating Lens Array 5 reflectors 5-1 Mirror Unit 5-2 Connection Structure 5-3 Minimum Profile of a Mirror 6 Warning light modules 7. Rearview mirror lenses 7-1 Lens Etching Pattern 8 luminous surfaces 9 warning light pattern 10 optical unit DETAILED DESCRIPTION

[0032] In order to describe the technical solutions of the present application more clearly, further description will be made in combination with specific embodiments.

[0033] Before the embodiments according to the present application are described in detail, it should be noted that in the following, the terms "comprise", "contain" or any other variant are intended to cover non-exclusive inclusion, thereby enabling a process, a method, an article or an apparatus including a series of elements to not only include these elements, but also include other elements not explicitly listed or inherent to such a process, method, article or apparatus.

[0034] Referring to Figures 1 to 3 As shown in the figure, the automobile blind area lane changing warning light module structure is installed at the back of the mirror lens, and the light emitting surface of the warning light module contains the warning light pattern of the lens.

[0035] In actual application, the automobile blind area lane changing warning light module structure contains but is not limited to: a circuit board 1; a lens group 4; a reflector 5; a housing 2; a front cover 3, wherein, The circuit board 1 contains a plurality of LED assemblies 1-1 and necessary electronic component connectors, etc.

[0036] The lens group 4 is composed of a uniform collimating lens array 4-1 made of transparent material, as Figure 6 shown.

[0037] The reflector 5 has an aluminum-coated reflecting surface, which can be fused with the housing 2 to form one part in actual application.

[0038] The housing 2 is non-transparent, which is used to accommodate the above optical structure, provide mounting structure, sealing structure, and prevent light leakage.

[0039] The front cover 3 is non-transparent, which contains an outlet 3-1, and the front cover 3 and the housing 2 form a cavity to accommodate the optical structure.

[0040] A semi-transparent material with low haze or a transparent material can be provided at the outlet 3-1 of the front cover 3 or outside the outlet 3-1 to seal the cavity.

[0041] As a preferred embodiment of the present application, as Figure 3 shown, the lens group 4 and the LED assembly 1-1 are deeply placed at the lower side of the cavity, which can reduce stray light interference.

[0042] As a preferred embodiment of the present application, as Figure 4As shown, the projection of the optical module along the LED light emitting axis 1-2 is an array of rectangular units, wherein the side of the rectangle along the thickness direction of the optical module is the main projection direction, that is, the array of rectangular units along the reflection direction of the reflection surface pattern array is the main projection direction of the optical module.

[0043] As a preferred embodiment of the present application, as shown in Figure 5 As shown, in actual application, the rearview mirror observation angle of the driver is different due to the difference in the driver's shape and driving habits, and theoretically, the angle should be a range of spatial solid angle, and the definition of the angle range is the target observation area.

[0044] The main projection direction is as parallel as possible to the direction of the normal line of the lens at the warning light pattern 9 in the horizontal plane, so as to optimize the lighting uniformity of the light emitting surface and reduce the possibility of forming dark spots.

[0045] As a preferred embodiment of the present application, as shown in Figure 7 As shown, the optical axis of the uniform collimating lens coincides with the LED light emitting axis 1-2, the uniform collimating lens converts the light emitted by the LED assembly 1-1 into parallel light along the optical axis, and the energy field of the parallel light beam is uniform (a plane is taken on the optical axis to receive the parallel light beam, and the illuminance formed by the parallel light beam is uniform). The reflecting surface of the reflector 5 reflects the uniform collimated light output by the lens group 4 to the target area direction according to the required diffusion angle.

[0046] As a preferred embodiment of the present application, as shown in Figure 8 As shown, in actual application, a light emitting assembly (not less than one LED assembly 1-1), a lens group 4 and a reflector 5 form a group of optical units 10, and the optical module comprises at least one group of optical units 10.

[0047] As a preferred embodiment of the present application, in actual application, as shown in Figure 9 As shown, the reflector 5 is used to cover the field of view of the target observation range. In the specified target observation range, only the reflector in the cavity can be observed through the lens etching pattern 7-1 at any viewing angle; by geometric projection method, the outline of the lens etching pattern 7-1 of the rearview mirror lens 7 is projected onto the center surface of the product thickness through the target limit observation angle, and the minimum outline 5-3 of the reflector is obtained.

[0048] As a preferred embodiment of the present application, in actual application, the diffusion angle is usually set according to the range of the target observation area. As shown in Figure 10As shown, taking one of the reflective surface pattern units, the upper left corner C1 of the reflective surface reflects light to the upper right corner of the target observation area; the upper right corner C2 of the reflective surface reflects light to the upper left corner of the target observation area; the lower left corner C3 of the reflective surface reflects light to the lower right corner of the target observation area; the lower right corner C4 of the reflective surface reflects light to the lower left corner of the target observation area; the remaining points of the reflective surface pattern correspond to reflected light obtained by interpolation from the four corner points.

[0049] The reflector 5 is composed of a plurality of reflector units 5-1 and connecting structures 5-2 therebetween, as shown in Figure 11 .

[0050] The reflector unit 5-1 is composed of a reflective surface pattern. In order to ensure the uniformity of the light-emitting surface, the reflective surface pattern can be an array, or each reflective surface pattern can be independently designed.

[0051] As a preferred embodiment of the present application, as shown in Figure 12 , the reflective surface pattern adopts a tiled arrangement in the vertical direction, and the right side of the figure is a partial enlarged view of D. By increasing the effective light-emitting size in the vertical direction of the product, the space size requirement in the thickness direction of the product is reduced (i.e. Figure 4 LY indicated in the figure).

[0052] In a specific embodiment of the present application, the light energy output by the lane change warning light module of a certain type of product is required to be within the following target area range. And the light-emitting surface is required to have a certain brightness uniformity.

[0053] Target area: 70 degrees to 40 degrees in the horizontal direction (90 degrees is the normal direction of the lens, 0 to 90 degrees is the side of the vehicle body), 0 degrees to 20 degrees in the vertical direction (above the horizontal plane).

[0054] In this embodiment, the translucent material of the light outlet 3-1 adopts PC2407 021180 material with a divergence half-angle of 4 degrees to optimize the lighting effect; the light source adopts 3 LEDs with a luminous flux of 4 lm; and the lens material is PC2407 clear.

[0055] As shown in Figure 13 , it is a schematic diagram of the target surface light intensity distribution; Figure 14 The effect shown is the case of observing the lighting of the mask from the center of the target area; from the display result, the energy of the lane change warning light module of this example is basically concentrated near the target area. When observing the lighted lens pattern from the center direction of the target area, the uniformity of the pattern is good.

[0056] As a preferred embodiment of the present application, the technical solution is a car blind area lane change warning light module with a certain uniformity of the light emitting surface brightness and a certain light intensity of the light signal released to the specified area in space (i.e. the driver's observation mirror view angle). It should be pointed out that the above-mentioned "releasing a certain light intensity of the light signal to the specified area (driver's observation mirror view angle)" does not mean that the light intensity output by the product outside the specified area is absolutely zero, but that the light intensity value relative to the specified area is less than an order of magnitude.

[0057] It should be understood that parts of the present application can be realized by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be realized by software or firmware stored in a memory and executed by a suitable instruction execution device.

[0058] Those skilled in the art of the present technology can understand that all or part of the steps carried out by the above-mentioned embodiment method can be completed by programs instructing related hardware, and the programs can be stored in a computer readable storage medium, and when the programs are executed, they include one or a combination of steps of the embodiment method.

[0059] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0060] In the description of the present specification, the description of the terms "an embodiment", "some embodiments", "an example", "a specific example" or "embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0061] Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

[0062] The car blind area lane change warning light module structure adopting the present application effectively overcomes the problem that the prior art cannot simultaneously satisfy the uniformity of the light emitting surface brightness and the directivity of the product output light signal, not only has a small overall size, but also has a good uniformity of the warning light pattern in the target area range in actual application, can ensure that the light source is basically concentrated in the target observation area, and has a more prominent application effect.

[0063] In this specification, the application has been described with reference to specific embodiments thereof. It is apparent, however, that various modifications and changes can be made thereto without departing from the spirit and scope of the application. Therefore, the description and drawings should be regarded in an illustrative rather than a restrictive sense.

Claims

1. A structure for a vehicle blind spot lane change warning light module, characterized in that, The warning light module (6) is installed on the back of the rearview mirror lens (7), and a warning light pattern (9) is provided on the light-emitting surface (8). The warning light module (6) includes: The circuit board (1) is configured as a human-machine interface for receiving external electrical signals and providing visual status information; An optical module comprising at least one set of optical units (10) for displaying a corresponding warning light pattern (9) within the target observation area. The housing (2), made of non-transparent material, is disposed on the outer surface of the warning light module to achieve sealing and prevent light leakage; and The front cover (3) and the housing (2) form a cavity structure for accommodating the optical module and circuit board (1), and the front cover (3) is provided with a light outlet, which is made of a semi-transparent or transparent material to seal the cavity structure.

2. The structure of the vehicle blind spot lane change warning light module according to claim 1, characterized in that, A set of optical units (10) includes: LED assembly (1-1) is disposed on the circuit board (1); The lens group (4) is located below the cavity structure and consists of a uniform collimating lens array 4-1 made of transparent material. The optical axis of the uniform collimating lens array coincides with the LED light-emitting optical axis (1-2) and is used to convert the light emitted by the LED component (1-1) into light parallel to the LED light-emitting optical axis (1-2). A reflector (5) is positioned above the lens group (4) and has aluminum plated on its reflective surface. The reflective surface is used to reflect the uniform collimated light output by the lens group (4) to the target observation area direction according to the required diffusion angle.

3. The vehicle blind spot lane change warning light module structure according to claim 2, characterized in that, The reflector (5) consists of several reflector units (5-1) and a connecting structure (5-2), wherein a connecting structure (5-2) is provided between two adjacent reflector units (5-1); the reflector unit (5-1) consists of a reflective surface pattern array, and each of the reflective surface pattern arrays is arranged in a shingled manner in the vertical direction.

4. The vehicle blind spot lane change warning light module structure according to claim 3, characterized in that, The aforementioned reflective surface pattern array consists of several reflective surface patterns with the same or different designs.

5. The vehicle blind spot lane change warning light module structure according to claim 4, characterized in that, The reflective surface pattern reflects light in the following manner: The upper left corner of the reflective surface reflects light to the upper right corner of the target observation area; the upper right corner of the reflective surface reflects light to the upper left corner of the target observation area; the lower left corner of the reflective surface reflects light to the lower right corner of the target observation area; the lower right corner of the reflective surface reflects light to the lower left corner of the target observation area; and the remaining points of the reflective surface pattern correspond to the reflected light rays obtained by interpolation from the four corner points.

6. The vehicle blind spot lane change warning light module structure according to claim 3, characterized in that, The projection of the optical module along the LED light-emitting optical axis (1-2) is a rectangular unit array, and the reflection direction of the rectangular unit array along the reflective surface pattern array is the main projection direction of the optical module.

7. The vehicle blind spot lane change warning light module structure according to claim 6, characterized in that, The range of the main projection direction and the target observation area in the horizontal plane is parallel to the normal direction of the rearview mirror lens (7) at the warning light pattern (9).

8. The structure of the vehicle blind spot lane change warning light module according to claim 2, characterized in that, The circuit board (1) is used to receive electrical signals from external systems through connectors and to provide users with visual status information corresponding to the electrical signals.

9. The structure of the vehicle blind spot lane change warning light module according to claim 8, characterized in that, The visualized status information includes: Drive at least one of the LED components (1-1) to light up, turn off, or blink.

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