Vehicle lamp with image display function

Abstract

The utility model discloses a car lamp with an image display function, which comprises a heat dissipation substrate, a low-beam light source arranged on the heat dissipation substrate, a shading component arranged on a light path of the low-beam light source and used for shading at least part of light rays of the low-beam light source, and a light emitting lens used for emitting the light rays of the low-beam light source, the shading assembly comprises a shading part and a light-transmitting part for light to penetrate through, the light-transmitting part is provided with a light-transmitting pattern, and part of light of the low-beam light source is transmitted through the light-transmitting pattern and then projects a pattern through the light-emitting lens. According to the car lamp with the image display function, on one hand, the traditional lighting function of the car lamp can be guaranteed, on the other hand, the image display function can be added, the functions of the car lamp are enriched, and the quality of the car lamp is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive headlights, and more specifically, to a headlight with an image display function. Background Art

[0002] Currently, the general structure of automotive headlights on the market includes a heat dissipation substrate, a low beam light source and a high beam light source arranged on the heat dissipation substrate, a light-emitting lens for emitting the light rays of the low beam light source and the high beam light source, a heat dissipation fan for heat dissipation, and a light-cutting structure for realizing the switching between the low beam and the high beam. Most of the existing automotive headlights on the market are only used to realize the lighting function, and the functions are relatively single. With the continuous development of the headlight product market and the further improvement of people's requirements for the performance of headlight products, the requirements for the performance of headlight products are no longer limited to brightness, but begin to pursue the interaction between people and vehicles. Therefore, if the image projection display function can be realized while meeting the lighting requirements of the headlights, it will significantly improve the quality of the headlights and the driving experience of the vehicle. Summary of the Utility Model

[0003] The utility model aims to overcome at least one defect of the above-mentioned prior art, and provides a headlight with an image display function. On the one hand, the headlight can ensure the traditional lighting function of the headlight, and on the other hand, it can increase the image display function, enrich the functions of the headlight, and improve the quality of the headlight.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A headlight with an image display function includes a heat dissipation substrate, a low beam light source arranged on the heat dissipation substrate, a light-shielding component arranged on the optical path of the low beam light source and used for blocking at least part of the light rays of the low beam light source, and a light-emitting lens for emitting the light rays of the low beam light source. The light-shielding component includes a shielding member and a light-transmitting member for light to pass through. The light-transmitting member is provided with a light-transmitting pattern, and part of the light rays of the low beam light source are transmitted through the light-transmitting pattern and then projected into a pattern by the light-emitting lens.

[0006] In one embodiment, the shielding member is a light-shielding plate, and the light-shielding plate is provided with a light-transmitting window. The light-transmitting member is a pattern sheet, and at least one light-transmitting pattern opposite to the light-transmitting window is provided on the pattern sheet.

[0007] In one embodiment, the light-transmitting pattern is a hollow pattern or a transparent pattern, and the area on the pattern sheet other than the hollow pattern or the transparent pattern is a non-light-transmitting area.

[0008] In one embodiment, the pattern sheet is a movable pattern sheet, and at least two light-transmitting patterns are provided on the pattern sheet, and different light-transmitting patterns can be selectively aligned with the light-transmitting window.

[0009] In one embodiment, the movable pattern piece is a disc-shaped pattern piece, and a rotating shaft is provided on the disc-shaped pattern piece, and the rotating shaft is parallel to the optical axis of the light-emitting lens.

[0010] In one embodiment, the shielding member is a light-shielding plate, the light-transmitting member is a liquid crystal screen, the light-shielding plate is provided with a light-transmitting window, and the liquid crystal screen is disposed at the light-transmitting window.

[0011] In one embodiment, the low beam light source includes a low beam reflector cup and a low beam LED disposed at the focal point of the low beam reflector cup, and the low beam reflector cup and the shielding member are of an integrally formed structure.

[0012] In one embodiment, the light-shielding component is a plate-shaped pattern piece, and the light-transmitting member is a hollow pattern or a transparent pattern having a light-transmitting pattern shape.

[0013] In one embodiment, the distance between the light-transmitting member and the focal plane of the light-emitting lens is 0 to 1 mm; and / or, the distance between the light-transmitting member and the shielding member is 0 to 2 mm.

[0014] In one embodiment, the focal point of the light-emitting lens is F, the vertex at the bottom of the shielding member is A, the vertex of the light-emitting surface of the light-emitting lens is B, the distance between F and A is s, the height of the vertex B of the light-emitting surface of the light-emitting lens from the ground when the vehicle lamp with the image display function is installed is h, the back focal length of the light-emitting lens is f, the thickness of the light-emitting lens is d, and the s satisfies:

[0015]

[0016] The shielding member is provided with a light-transmitting window, and the distance between the top or vertex of the light-transmitting window and the focal point F of the light-emitting lens is s1, and the s1 satisfies:

[0017]

[0018] In one embodiment, the light-transmitting member is provided with at least two light-transmitting patterns, the light-shielding component is connected to a control mechanism, and the control mechanism is used to control different light-transmitting patterns to be located on the optical path of the low beam light source so as to project different patterns through the light-emitting lens.

[0019] In one embodiment, it further includes a high beam light source and a light-cutting mechanism, and the light-cutting mechanism is located at the focal plane of the light-emitting lens.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows: The technical solution of this application is provided with a light-shielding component for blocking at least part of the light of the low beam light source on the basis of the existing vehicle lamp. The light-shielding component includes a shielding member and a light-transmitting member for light to pass through. The light-transmitting member is provided with a light-transmitting pattern. Part of the light of the low beam light source is transmitted through the light-transmitting pattern and then projected through the light-emitting lens, so that the vehicle lamp can simultaneously realize the lighting function and the image display function, enrich the functions of the vehicle lamp, and improve the quality of the vehicle lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a vehicle lamp with an image display function in Embodiment 1.

[0022] Figure 2 It is a schematic diagram of the mating state of the low beam reflector, the shielding member and the light-emitting lens in Embodiment 1.

[0023] Figure 3 It is a schematic diagram of the mating state of the low beam reflector and the light-shielding component in Embodiment 1.

[0024] Figure 4 It is a schematic structural diagram of the pattern sheet in Embodiment 1.

[0025] Figure 5 It is another perspective schematic diagram of the mating state of the low beam reflector, the shielding member and the light-emitting lens in Embodiment 1.

[0026] Figure 6 For Figure 5 Distance marking diagram of the view.

[0027] Figure 7 It is a schematic diagram of the height when the vehicle lamp with an image display function in Embodiment 1 is installed on the vehicle.

[0028] Figure 8 It is a light intensity distribution diagram of the vehicle lamp in Embodiment 1 projecting a left turn graphic.

[0029] Figure 9 It is a light pattern simulation diagram of the vehicle lamp in Embodiment 1 projecting a left turn graphic.

[0030] Figure 10 It is a light pattern simulation diagram of the automotive headlamp simultaneously emitting low beam light and projection graphics in Embodiment 1.

[0031] Figure 11 It is a schematic diagram of the mating state of the low beam reflector, the shielding member and the light-emitting lens in another embodiment.

[0032] Figure 12 It is a schematic structural diagram of a vehicle lamp with an image display function in Embodiment 2.

[0033] Description of the reference numerals: 1, heat dissipation substrate; 2, low beam light source; 21, low beam LED; 22, low beam reflector; 3, light shielding component; 31, light shielding plate; 311, light transmission window; 32, pattern sheet; 321, light transmission pattern; 322, rotating shaft; 33, liquid crystal screen; 34, plate-shaped pattern sheet; 4, light-emitting lens; 5, high beam light source; 51, high beam LED; 52, high beam reflector; 6, light-cutting mechanism. Detailed implementation manners

[0034] The drawings of the present utility model are only for illustrative purposes and cannot be construed as a limitation to the present utility model. For better illustrating the following embodiments, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual products; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0035] Embodiment 1

[0036] As Figure 1 、 Figure 2 shown, Embodiment 1 of the present disclosure discloses a vehicle headlight with an image display function, including a heat dissipation substrate 1, a low beam light source 2 disposed on the heat dissipation substrate 1, a light shielding component 3 disposed on the optical path of the low beam light source 2 and used for shielding at least part of the light of the low beam light source 2, and a light-emitting lens 4 for emitting the light of the low beam light source 2. The light shielding component 3 includes a shielding member and a light transmission member for light to pass through. The light transmission member is provided with a light transmission pattern 311. Part of the light of the low beam light source 2 is transmitted through the light transmission pattern 321 and then projected through the light-emitting lens 4 to form a pattern.

[0037] In this embodiment, the heat dissipation substrate 1 is used to mount the low beam light source 2 and dissipate heat therefrom. The low beam light source 2 can emit light, and the light-emitting lens 4 can emit the light of the low beam light source 2 to form illumination light. Since a light shielding component 3 for shielding at least part of the light of the low beam light source 2 is disposed on the optical path of the low beam light source 2, the light shielding component 3 can shield part of the light of the low beam light source 2. Also, since the light shielding component 3 includes a shielding member and a light transmission member for light to pass through, and the light transmission member is provided with a light transmission pattern 311, the light in the area blocked by the shielding member cannot project light from the light-emitting lens 4, which appears as a dark area on the road surface. However, part of the light passes through the light transmission pattern 311 and then projects a pattern corresponding to the light transmission pattern 311 through the light-emitting lens 4. A bright pattern will appear in the middle of the dark area on the road surface, that is, the shape of the light transmission pattern 311 is projected onto the road surface to achieve the image display function, namely the projection function. The light not blocked by the shielding component is projected through the light-emitting lens 4 to form illumination light. Thus, a vehicle headlight can simultaneously achieve the illumination function and the image display function.

[0038] Furthermore, as Figure 2 、 Figure 3 、 Figure 4As shown, in this embodiment, the shielding member is a light-shielding plate 31 and a light-transmitting window 311 is provided on the light-shielding plate 31. The light-transmitting member is a pattern sheet 32, and at least one light-transmitting pattern 321 opposite to the light-transmitting window 311 is provided on the pattern sheet 32. Part of the light from the low-beam light source 2 will be blocked by the light-shielding plate 31, and part of the light will pass through the light-transmitting window 311. Since there is a light-transmitting pattern 321 opposite to the light-transmitting window 311, the light passing through the light-transmitting window 311 will pass through the light-transmitting pattern 321, and thus a specific pattern will be projected through the light-emitting lens 4. More specifically, in this embodiment, the light-transmitting pattern 321 is a hollow pattern or a transparent pattern, and the area on the pattern sheet 32 other than the hollow pattern or the transparent pattern is a non-light-transmitting area, and light can only pass through from the position of the light-transmitting pattern.

[0039] Further, in this embodiment, the pattern sheet 32 is a movable pattern sheet, and at least two light-transmitting patterns 321 are provided on the pattern sheet 32, and different light-transmitting patterns 321 can be selectively aligned with the light-transmitting window 311. For example, when the vehicle needs to turn left, the light-transmitting pattern on the pattern sheet 32 that is a left-turn arrow pattern is aligned with the light-transmitting window 311, and then a left-turn arrow pattern can be projected; when the vehicle needs to turn right, the light-transmitting pattern on the pattern sheet 32 that is a right-turn arrow pattern is aligned with the light-transmitting window 311, and then a right-turn arrow pattern can be projected; when the vehicle needs to brake, the light-transmitting pattern on the pattern sheet 32 that is a brake warning pattern is aligned with the light-transmitting window 311, and then a brake warning pattern can be projected; when the vehicle needs to go straight, the light-transmitting pattern on the pattern sheet 32 that is a straight-ahead indication pattern is aligned with the light-transmitting window 311, and then a straight-ahead indication pattern can be projected. As Figure 4 shown in the structure of the movable pattern sheet where the pattern sheet 32 has a left-turn arrow pattern, a brake warning pattern, and a straight-ahead indication pattern. In other embodiments, the pattern sheet may also have other light-transmitting patterns.

[0040] Further, the light-shielding assembly is connected to a control mechanism (not shown in the figure), and the control mechanism is used to control different light-transmitting patterns to be aligned with the light-transmitting window 311 so as to project different patterns through the light-emitting lens 4. The control mechanism can be a common control structure on the market, such as a motor. This embodiment will not elaborate on the control mechanism. In the actual application process, the control mechanism is also connected to the vehicle control system. When the vehicle control system receives external information, it sends an instruction signal to the control structure to rotate the corresponding light-transmitting pattern on the light-shielding assembly to a preset position.

[0041] Further, as Figure 4As shown in the figure, in this embodiment, the movable pattern piece is a circular plate pattern piece. A rotating shaft 322 is provided on the circular plate pattern piece, and the rotating shaft 322 is parallel to the optical axis of the light-emitting lens 4. Further, the rotating shaft 322 is connected to a driving mechanism (not shown in the figure). Under the action of the driving mechanism, the rotating shaft 322 rotates, thereby driving the circular plate pattern piece to rotate, so that the target transmissive pattern 321 rotates to a preset position.

[0042] Further, in this embodiment, the distance between the light-transmitting member and the focal plane of the light-emitting lens 4 is 0 to 1 mm. The light-transmitting member can present the clearest image on the focal plane. In practical applications, a slightly less clear projected image can be accepted. Therefore, the light-transmitting member is allowed to deviate from the focal plane by a small distance, but it cannot deviate too far, otherwise the image will be extremely blurred. Therefore, the distance between the light-transmitting member and the focal plane of the light-emitting lens 4 is preferably 0 to 1 mm. Further, the distance between the light-transmitting member and the light-blocking member is 0 to 2 mm. In practical applications, the projection display effect is better when the light-transmitting member is as close as possible to the light-blocking member. Preferably, the distance between the two is 0 to 2 mm.

[0043] Further, when the vehicle lamp with the image display function is installed on a vehicle, the projection display area has a better effect in the area 2.5 - 5 m in front of the vehicle. Such a design can make the light-emitting lens project a pattern in front of the vehicle. For the driver, it is equivalent to the effect of using a HUD (Head-Up Display). On the other hand, such a design ensures that the light-blocking component does not block too much light from the low beam light source, and has little impact on the lighting effect of the vehicle lamp. Specifically, to meet the above requirements, as Figure 5 、 Figure 6 、 Figure 7 shown, let the focus of the light-emitting lens be F, the vertex of the bottom of the light-blocking member be A, the vertex of the light-emitting surface of the light-emitting lens be B, the distance between F and A be s, the height of the vertex B of the light-emitting surface of the light-emitting lens from the ground when the vehicle lamp with the image display function is installed on a vehicle be h, the back focal length of the light-emitting lens be f, and the thickness of the light-emitting lens be d. Then s should satisfy:

[0044]

[0045] At this time, a dark area will be presented in the area 2.5 - 5 m in front of the vehicle after being blocked by the light-blocking member;

[0046] As Figure 5 shown, the light-blocking member is provided with a light-transmitting window 311. The distance between the top or vertex of the light-transmitting window 311 and the focus F of the light-emitting lens is s1, and s1 satisfies:

[0047]

[0048] At this time, the vehicle lamp can project a bright pattern in the dark area.

[0049] Taking the projection left turn indication graphic as an example, as Figure 8 、 Figure 9 shown, when the pattern of the left turn arrow on the pattern piece 32 is aligned with the light-transmitting window 311, its light intensity distribution diagram is as Figure 8 shown, and the light pattern simulation diagram is as Figure 9 shown. From Figure 8 and Figure 9 , it can be seen that under the action of the light-shielding component 3, the vehicle lamp can project a clear pattern. From Figure 10 , it can be seen that the vehicle lamp can simultaneously realize the functions of image display and lighting, Figure 10 and the image display position in

[0050] is located about 3m in front of the vehicle. Further, the low beam light source 2 includes a low beam reflector 22 and a low beam LED 21 disposed at the focus of the low beam reflector 22. In this embodiment, the low beam reflector 22 and the shielding member are of a split design. In other embodiments, the low beam reflector 22 and the shielding member may also be of an integrally formed structure.

[0051] Further, the vehicle lamp in this embodiment further includes a cut-off mechanism 6, and the cut-off mechanism 6 is used to cut off the light of the low beam light source 2 to obtain a low beam light pattern with a distinct cut-off line. More specifically, the cut-off mechanism 6 in this embodiment is a cut-off sheet, which may be a fixed cut-off sheet.

[0052] In other embodiments, the light-shielding component may also be in other forms. As Figure 11 shown, the shielding member is a light-shielding plate 31, the light-transmitting member is a liquid crystal screen 33, the light-shielding plate 31 is provided with a light-transmitting window, and the liquid crystal screen 33 is disposed at the light-transmitting window. The liquid crystal screen 33 itself can realize the display of different light-transmitting images. Adopting the form of the liquid crystal screen 33 can simplify the pattern switching process and avoid the cumbersome structure of using a mechanical structure to switch the pattern piece.

[0053] In other embodiments, the light-shielding component may also be a plate-shaped pattern piece, that is, the shielding member and the light-transmitting member are an integrally formed plate-shaped pattern piece, and the light-transmitting member is a hollow pattern or a transparent pattern having the shape of a light-transmitting pattern.

[0054] Embodiment 2

[0055] As Figure 12As shown in the figure, this embodiment discloses a vehicle headlight with an image display function, which includes a heat dissipation substrate 1, a low beam light source 2 disposed on the heat dissipation substrate 1, a light shielding component 3 disposed on the optical path of the low beam light source 2 and used to block at least part of the light of the low beam light source 2, and a light output lens 4 used to output the light of the low beam light source 2. The light shielding component 3 includes a shielding member and a light transmissive member for light to pass through. The light transmissive member is provided with a light transmissive pattern 311. Part of the light of the low beam light source 2 is transmitted through the light transmissive pattern 321 and then projected by the light output lens 4. A high beam light source 5 is further provided below the heat dissipation substrate 1. The high beam light source 5 includes a high beam reflector 52 and a high beam LED 51 disposed at the focus of the high beam reflector 52. Compared with Embodiment 1, the main difference of this Embodiment 2 is that the high beam light source 5 is added, which can further enhance the light brightness and achieve the high beam lighting effect. The principle of implementing the image display function in this Embodiment 2 is the same as that in Embodiment 1, both relying on the light shielding component. The difference is only that after adding the high beam light source 5, more light passes through the light transmissive pattern 321, and the brightness of the pattern projected by the light output lens is higher. In this embodiment, the light cutoff mechanism 6 can be a light cutoff sheet with a solenoid valve to achieve the function of switching between high and low beams. For the same parts of the structure and function as those in Embodiment 1 in this Embodiment 2, they will not be elaborated here.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the technical solutions of the present invention, rather than limitations on the specific implementation manners of the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A vehicle lamp with an image display function, characterized in that, It includes a heat dissipation substrate, a low beam light source disposed on the heat dissipation substrate, a light shielding component disposed on the optical path of the low beam light source and used to block at least part of the light of the low beam light source, and a light output lens for outputting the light of the low beam light source. The light shielding component includes a shielding member and a light transmissive member through which light can pass. The light transmissive member is provided with a light transmissive pattern, and part of the light of the low beam light source is transmitted through the light transmissive pattern and then projected as a pattern through the light output lens.

2. The vehicle lamp with an image display function according to claim 1, characterized in that, The shielding member is a light shielding plate and a light transmissive window is provided on the light shielding plate. The light transmissive member is a pattern plate, and at least one light transmissive pattern opposite to the light transmissive window is provided on the pattern plate.

3. The vehicle lamp with an image display function according to claim 2, characterized in that, The light transmissive pattern is a hollow pattern or a transparent pattern, and the area on the pattern plate other than the hollow pattern or the transparent pattern is a non-light transmissive area.

4. The vehicle lamp with an image display function according to claim 1, wherein, The shielding member is a light shielding plate, the light transmissive member is a liquid crystal screen, the light shielding plate is provided with a light transmissive window, and the liquid crystal screen is disposed at the light transmissive window.

5. The vehicle lamp with an image display function according to any one of claims 1 to 4, characterized in that, The low beam light source includes a low beam reflector cup and a low beam LED disposed at the focal point of the low beam reflector cup. The low beam reflector cup and the shielding member are of an integrally formed structure.

6. The vehicle lamp with an image display function according to claim 1, characterized in that, The light shielding component is a plate-shaped pattern plate, and the light transmissive member is a hollow pattern or a transparent pattern having the shape of the light transmissive pattern.

7. The vehicle lamp with an image display function according to claim 1, wherein, The distance between the light transmissive member and the focal plane of the light output lens is 0 to 1 mm; and / or the distance between the light transmissive member and the shielding member is 0 to 2 mm.

8. The vehicle lamp with an image display function according to claim 1, characterized in that, The focal point of the light output lens is F, the vertex of the bottom of the shielding member is A, the vertex of the light output surface of the light output lens is B, the distance between F and A is s. When the vehicle headlamp with the image display function is installed, the height of the vertex B of the light output surface of the light output lens from the ground is h, the back focal length of the light output lens is f, the thickness of the light output lens is d, and s satisfies: The shielding member is provided with a light transmissive window, and the distance between the top or vertex of the light transmissive window and the focal point F of the light output lens is s1, and s1 satisfies:

9. The vehicle lamp with an image display function according to any one of claims 1 to 4 or 6 to 8, characterized in that, The light transmissive member is provided with at least two light transmissive patterns. The light shielding component is connected to a control mechanism, and the control mechanism is used to control different light transmissive patterns to be located on the optical path of the low beam light source so as to project different patterns through the light output lens.

10. The vehicle lamp with an image display function according to any one of claims 1 to 4 or 6 to 8, characterized in that It further includes a high beam light source and a light cutoff mechanism, and the light cutoff mechanism is located at the focal plane of the light output lens.

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