CN217374312U - Carpet lamp and projection display system based on micro LED shows - Google Patents

Abstract

The utility model is suitable for a carpet lamp field provides a carpet lamp and projection display system based on micro LED shows, the carpet lamp still includes circuit board, micro LED display device, projection lens module etc. including procapsid and the back casing that the lid closed. The utility model discloses a micro LED display device is as the light source, can see through different pattern, the animation of drive input, see through the function that the projection lens module enlargies the projection and realize multiple difference on the road surface, can project out beautiful animation effect for example when welcoming the guest, can be customized by the consumer even, gives feedback information or warning signal, has increased user's ceremonial sense and also can improve the security, can obviously improve vehicle and use experience.

Description

Carpet lamp and projection display system based on micro LED shows

Technical Field

The utility model belongs to carpet lamp field especially relates to a carpet lamp and projection display system based on micro LED shows.

Background

At present, the intelligent development of the 'new four-style' wave mat automobile industry enables vehicles to be safer and brings great convenience to consumers, new technologies and new concepts are continuously given off, the buying desire of young consumers is stimulated, the consumers are enabled to chase after more and more intellectualization, and automobile lamps and lanterns are urgently needed to develop in a direction of being more intelligent and providing more useful values.

At present, the carpet lamp for the vehicle mainly adopts the scheme that a single LED is focused by a condensing lens, forms a pattern through a film and penetrates through a projection lens group imaging mode, however, the current scheme can only realize the projection of a single pattern and can only be simply used for a single function, the ever-increasing requirements of consumers can not be met, and the current 'new and quadrupled' step can not be followed.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, an object of the present invention is to provide a carpet lamp and projection display system based on micro LED display, which aims to solve the technical problem of single projection imaging pattern of the existing carpet lamp.

On the one hand, carpet lamp based on micro LED shows is including the procapsid and the back casing that the lid closed, the procapsid openly has the window, installs the circuit board around wherein between the casing, be equipped with micro LED display device on the circuit board, the projection lens module is still installed to micro LED display device's dead ahead, the coaxial setting of window of micro LED display device, projection lens module and procapsid.

Furthermore, the rear shell is a heat dissipation shell, and a heat dissipation device is arranged on the back of the rear shell.

Further, the front shell and the rear shell are sealed through a sealing ring.

Further, the carpet lamp further comprises a dimming support, and the front shell and the rear shell are integrally installed in the dimming support.

Furthermore, there is the installation axle the support left and right sides of adjusting luminance.

Furthermore, there is the mounting bracket bottom the projection lens module, the mounting bracket bottom surface is for dodging the notch.

Furthermore, the micro LED pixel units are densely distributed in the middle of the micro LED display device.

Furthermore, a micro lens array is arranged in front of the micro LED display device.

On the other hand, the projection display system comprises a vehicle ECU and the carpet lamp, the vehicle ECU is connected with the carpet lamp through a bus, and the carpet lamp is further connected with a power supply.

The beneficial effects of the utility model are that: the utility model provides a carpet lamp based on micro LED shows adopts micro LED display device as the light source, can realize multiple different functions on the road surface through the enlarged projection of projection lens module through different patterns, animation of drive input, for example can project out beautiful animation effect when welcoming the guest, can even be by customer's self-definition, and the carpet lamp that has now can only provide a fixed pattern; the pattern that can project through this product has the multiple, for example can project the sign of warning of opening the door when the door is opened for other users 'doors of warning road are about to open, promote the security, for example can remind vehicle user's door window not close when shutting etc. therefore the product is used extensively, can obviously improve vehicle and use experience.

Drawings

FIG. 1 is an exploded view of a carpet light according to an embodiment of the present invention;

FIG. 2 is a perspective view of a carpet light according to an embodiment of the present invention;

FIG. 3 is a schematic view of a carpet light installation provided by an embodiment of the present invention;

fig. 4 is a schematic diagram of a micro LED display device provided in an embodiment of the present invention;

fig. 5 is a schematic view of a carpet light projected on the ground according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a projection display system according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In order to explain the technical solution of the present invention, the following description is made by using specific examples.

Fig. 1 shows the structure of a carpet lamp based on micro LED display provided by an embodiment of the present invention, and only the parts related to the embodiment of the present invention are shown for convenience of description.

As shown in fig. 1 and 2, the carpet lamp based on micro LED display that this embodiment provided includes procapsid 2 and the back casing 5 that the lid closed, procapsid 2 openly has the window, wherein installs circuit board 4 between the procapsid around, in the figure, the circuit board passes through the screw fixation in the procapsid, be equipped with micro LED display device 41 on the circuit board 4, projecting lens module 3 is still installed to micro LED display device 41 dead ahead, micro LED display device 41, projecting lens module 3 and procapsid 2's the coaxial setting of window. In the figure, the front shell 2 and the rear shell 5 are sealed by a sealing ring 7 to ensure the sealing performance of the carpet lamp. In order to ensure the heat dissipation effect, the rear shell of the carpet lamp is a heat dissipation shell, the circuit board is tightly attached to the rear shell, and the back of the rear shell is provided with a heat dissipation device 6, such as a heat dissipation fan, a heat dissipation fin and the like.

In addition, there is mounting bracket 31 projection lens module 3 bottom, the mounting bracket bottom surface is for dodging the notch, can guarantee through the mounting bracket that projection lens module installation is firm and the coaxial degree of accuracy of installation. The mounting bracket can be directly installed on the rear shell and also can be fixed on the circuit board, and the avoiding notch of the mounting bracket is designed to accommodate the micro LED display device.

The existing carpet lamp adopts a single LED to change light diffused by the LED into parallel light through a condensing lens, then forms an object image through a film, and images on the ground through a projection lens. In the structure, the carpet lamp adopts a micro LED display device to replace a single LED, a condensing lens and a film part to form an editable object image, so that the image projected on the road surface can be displayed more intelligently, such as diversity, animation effect and the like.

Specifically, the projection lens module of this structure can be become by 3 to 5 lens groups, and micro LED display device's light emitting area is arranged in the depth of focus within range of projection lens module, is the micro LED pixel unit that the intensive range distributes in the middle of the micro LED display device. The pixel unit interval is 10 mu m to 50 mu m, and if less than 10 mu m, the interval between the two pixel units (chips) is insufficient, the light and shade contrast is poor, so that the projected image is not clear, and the light and shade contrast of adjacent pixel points is 100: 1, if the pixel unit distance is more than 50 μm, the edge of the image after being amplified by the projection system has obvious saw teeth, the edge of the projected image is not clear, the granular sensation is strong, and the focal length of the projection system is not more than 20mm, so that the projection system has enough depth of field to ensure that the pattern projected on the ground is clear.

In this embodiment, the micro LED display device has a pixel arrangement of 246 × 82, that is, 20172 micro LEDs, and the center-to-center distance between adjacent micro LEDs is 40 μm, that is, the pixel unit distance is 40 μm. The micro LED display device is located on a focal plane of the projection lens module, the focal length of the projection lens module is 13mm, F/4.5, the diameter of a dispersion circle is 0.04mm, the focusing distance is 939mm, and the depth of field is 470mm to infinity.

The carpet lamp is arranged on the outer side or the back of a vehicle body of a vehicle, for example, the carpet lamp can be arranged in the areas of an external rear view mirror, a fender, a hub, a chassis, a pedal and the like, and a projected image is projected on the side or the back of the vehicle. In addition, a plurality of carpet lamps are also installed optionally, and a larger projection area or higher brightness is realized in a mode of splicing or overlapping projection patterns.

As a preferred structure, the installation angle of the carpet lamp is adjustable. In this structure, the carpet lamp is still including adjusting luminance support 1, procapsid and back casing monolithic installation are in adjust luminance in the support 1, the support left and right sides of adjusting luminance has installation axle 11, and the support of adjusting luminance can be around installing the axle and rotate as the axle, and concrete actuating mechanism this embodiment is not specifically injectd.

Optionally, a micro lens array may be further disposed in front of the micro LED display device, each micro lens corresponds to one micro LED pixel unit, and is used for condensing light to improve brightness, and at this time, the light emitting surface of the micro lens is disposed in the focal depth range of the projection system. And the projection lens module can be designed into a zoom system to adapt to different field angle requirements and different depth of field requirements.

As an example, as shown in fig. 3, the projection light cone 104 of the carpet lamp projects a projection distance range (actual range may be larger than the illustrated range) of the carpet lamp 102 on the ground 103, the carpet lamp 102 is mounted on the vehicle body 101 of the vehicle through a dimming bracket, the dimming bracket has a function of adjusting the projection position of the projection light cone of the carpet lamp on the ground, and the whole carpet lamp is an enlarged imaging optical system and forms an inverted enlarged real image on the ground. As shown in fig. 4 and 5, the micro LED display device 41 has a display pattern 42 projected on the ground to form a road surface pixel pattern 40 ', and the upper left pixel unit 401 and the lower right pixel unit 402 of the micro LED display device are projected on the ground to correspond to the road surface pixel units 401 ' and 402 '. As a specific implementation, the carpet lamp is connected to the vehicle, the vehicle electronic control unit inputs a signal to the carpet lamp, the micro LED display device displays the display pattern 42 shown in fig. 4, and the carpet lamp projects the road pixel pattern 40' shown in fig. 5 on the ground, it can be seen that, since the carpet lamp projects obliquely toward the ground, the micro LED display pattern and the projected road pixel pattern have certain deformation, so that the pattern information input in the vehicle electronic control unit needs to be subjected to trapezoidal correction, a coordinate transformation algorithm is used, and the specific algorithm is not described in this embodiment.

The embodiment also provides a projection display system, as shown in fig. 6, which includes a vehicle ECU, indicated by 100, and the carpet light 102, where the vehicle ECU and the carpet light are connected through a bus, and the carpet light is further connected to a power supply 103.

The carpet lamp is characterized in that a driving module is arranged in a circuit board of the carpet lamp, projected patterns or animations CAN be edited, the carpet lamp CAN be installed below a chassis and obliquely projected downwards on a road surface on the side face of a vehicle, and data communication CAN be performed between the carpet lamp and an ECU of the vehicle, for example, a CAN bus form is adopted. The carpet lamp passes through CAN bus and obtains signals such as radar, door on-off state, door and window on-off state, battery electric quantity from whole car ECU, is triggered when corresponding signal, and the carpet lamp projection goes out corresponding image or animation, gives feedback information or warning signal, has increased user's ceremony sense and also CAN improve the security, and the vehicle also CAN realize projection pattern concatenation or stack through installing a plurality of micro LED carpet lamps, realizes bigger projection area or higher luminance.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. The utility model provides a carpet lamp based on micro LED shows, a serial communication port, carpet lamp is including procapsid and the back casing that the lid closed, the procapsid openly has the window, installs the circuit board around wherein between the casing, be equipped with micro LED display device on the circuit board, the projection lens module is still installed to micro LED display device's dead ahead, the coaxial setting of window of micro LED display device, projection lens module and procapsid.

2. The micro LED display-based carpet light of claim 1, wherein the rear housing is a heat dissipating housing with a heat sink on the back side.

3. The micro LED display-based carpet lamp of claim 2, wherein the front housing and the rear housing are sealed by a sealing ring.

4. The micro LED display-based carpet light of claim 3, further comprising a dimming mount, the front housing and the rear housing being integrally mounted within the dimming mount.

5. The micro LED display-based carpet lamp according to claim 4, wherein the dimming support has mounting shafts on the left and right sides.

6. The micro LED display-based carpet lamp according to claim 5, wherein the projection lens module has a mounting frame at the bottom, and the bottom surface of the mounting frame is an avoiding notch.

7. The micro LED display-based carpet lamp according to claim 6, wherein the micro LED display device is provided with micro LED pixel units distributed in a dense arrangement in the middle.

8. The carpet lamp based on micro LED display of claim 7, characterized in that a micro lens array is arranged in front of the micro LED display device.

9. A projection display system, characterized in that the projection display system comprises a vehicle ECU and a carpet lamp according to any one of claims 1 to 8, the vehicle ECU and the carpet lamp are connected through a bus, and the carpet lamp is further connected with a power supply.

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