Vehicle-mounted projector and vehicle

Abstract

The utility model provides a vehicle-mounted projector and a vehicle, and the vehicle-mounted projector comprises a housing which comprises a main body part, and the main body part comprises an upper part and a lower part which are arranged in the vertical direction; a first layer optical component located at one of the upper portion and the lower portion; the first-layer optical assembly emits irradiation light and enables the irradiation light to be sequentially spread along a first-layer light path and a second-layer light path; wherein the first-layer optical path is located in the plane where the first-layer optical assembly is located, and the second-layer optical path is perpendicular to the first-layer optical path; a second layer optical element located at the other of the upper and lower portions; the second layer optical assembly receives the illumination light propagating along the second layer optical path and converts the illumination light into an image. The vehicle-mounted projector provided by the utility model is reasonable in light path arrangement, good in stability and high in reliability, and meets the vehicle-mounted space requirement.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle-mounted equipment, and in particular to a vehicle-mounted projector and a vehicle. Background Art

[0002] With the popularization and application of automobile intelligence, automobiles have more and more entertainment functions, making the application of projectors in automobiles possible.

[0003] The working environment of home projectors is relatively good, but the working conditions on vehicles are complex. The requirements for vibration resistance, high temperature resistance, weather resistance, waterproofness, dust resistance and other performance of vehicle-mounted projectors are very high, and vehicle-mounted projectors should be installed securely. In addition, the reliability requirements for light sources, chips and other components of vehicle-mounted projectors are much higher than those for home and office projectors, and a technical solution with high maturity and good stability is required.

[0004] However, existing projectors all adopt a flat optical path structure, which occupies a large space and cannot meet the vehicle space requirements. Utility Model Content

[0005] The present application provides a vehicle-mounted projector and a vehicle. The optical path of the vehicle-mounted projector is reasonably arranged, meets the vehicle-mounted space requirements, and has good stability and high reliability.

[0006] One aspect of the present application provides a vehicle-mounted projector, comprising:

[0007] The housing comprises a main body, wherein the main body comprises an upper part and a lower part arranged in a vertical direction;

[0008] A first layer of optical components is located at one of the upper part and the lower part; the first layer of optical components emits illumination light, and the illumination light propagates along the first layer of optical path and the second layer of optical path in sequence; wherein the first layer of optical path is located in the plane where the first layer of optical components is located, and the second layer of optical path is perpendicular to the first layer of optical path;

[0009] The second layer optical component is located at the other of the upper part and the lower part; the second layer optical component receives the illumination light propagating along the second layer optical path and converts the illumination light into an image.

[0010] In a possible implementation manner, the housing further includes a mounting portion, the mounting portion is connected to the main body portion, and the mounting portion is used to be connected to the vehicle body.

[0011] In a possible implementation, the first layer of optical components is located at the upper part, and the second layer of optical components is located at the lower part.

[0012] In a possible implementation, the first layer of optical components includes a light source, a color wheel, a first reflector, and a second reflector sequentially arranged on the first layer of optical path;

[0013] The light source emits illumination light, the color wheel filters the illumination light, the first reflector reflects the illumination light to the second reflector, and the second reflector reflects the illumination light to the second optical component.

[0014] In a possible implementation, a condenser is provided on the light-emitting side of the light source, and the illumination light emitted by the light source passes through the condenser and then irradiates the color wheel.

[0015] In a possible implementation, the light emitting direction of the light source has an angle with the surface of the color wheel, and the first layer of optical components further includes a third reflector;

[0016] Along the first layer of the light path, the third reflector is located between the light source and the color wheel, and the third reflector reflects the illumination light emitted by the light source to the color wheel.

[0017] In a possible implementation, a first lens is further disposed between the color wheel and the first reflector along the first layer light path.

[0018] In a possible implementation, the first optical component further includes a fourth reflector and a fifth reflector;

[0019] Along the first layer of light path, the fourth reflector and the fifth reflector are sequentially arranged between the first reflector and the second reflector; the fourth reflector reflects the irradiation light reflected by the first reflector to the fifth reflector, and the fifth reflector reflects the irradiation light reflected by the fourth reflector to the second reflector.

[0020] In a possible implementation, the second optical component includes a display device and a projection lens. The display device converts the illumination light into an image, and the projection lens receives the image and projects it outward.

[0021] In a possible implementation manner, the second optical component further includes a sixth reflector, which receives the illumination light and reflects the illumination light to the display device.

[0022] Another aspect of the present application provides a vehicle, comprising a vehicle body and the vehicle-mounted projector as described above, wherein the vehicle-mounted projector is installed on the vehicle body.

[0023] The vehicle-mounted projector and vehicle provided by the present application include a housing, a first layer of optical components and a second layer of optical components, and the first layer of optical components and the second layer of optical components are both arranged in the housing. By arranging one of the first layer of optical components and the second layer of optical components at the upper part of the housing and the other at the lower part of the housing, the first layer of optical components and the second layer of optical components are arranged up and down, and the illumination light emitted by the first layer of optical components is sequentially propagated along the first layer of optical path and the second layer of optical path perpendicular to each other, the first layer of optical path is located in the plane where the first layer of optical components is located, and the second layer of optical path is perpendicular to the second layer of optical components, so that the second layer of optical components can convert the illumination light into an image. In this way, the vehicle-mounted projector can meet the installation requirements of the vehicle space and ensure a sufficient length of optical path to improve the performance of the vehicle-mounted projector. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic diagram of the structure of a vehicle-mounted projector provided in an embodiment of the present application;

[0026] Figure 2 for Figure 1 The exploded structure diagram of the vehicle-mounted projector in FIG.

[0027] Figure 3 A diagram of an optical path layout structure of a vehicle-mounted projector provided in an embodiment of the present application;

[0028] Figure 4 A structural diagram of another optical path layout of a vehicle-mounted projector provided in an embodiment of the present application.

[0029] Description of reference numerals:

[0030] 100-housing;

[0031] 110-main body; 120-installation part;

[0032] 111-upper part; 112-lower part;

[0033] 200-first layer optical component;

[0034] 210-light source; 220-color wheel; 230-first reflector; 240-second reflector; 250-condenser; 260-third reflector; 270-first lens; 280-fourth reflector; 290-fifth reflector; 201-diffuser; 202-second lens;

[0035] 300-second layer optical components;

[0036] 310-display device; 320-projection lens; 330-sixth reflector;

[0037] 400-control components;

[0038] 410-main control board; 420-power control board;

[0039] 500-Radiator;

[0040] 600-screen. DETAILED DESCRIPTION

[0041] As described in the background technology, existing projectors generally adopt a single-layer flat optical path layout structure. For example, the light source, lens, chip and lens in the projector are arranged in sequence along the same optical axis. This will cause the size of the projector to be too large in a certain direction, or in other words, the height of the projector is too large and the length is too long.

[0042] However, due to the internal structure of the vehicle, the installation space for the projector is often insufficient, and the projector with a flat optical path layout cannot meet the vehicle space requirements. For example, the optical path of the projector extends along the height direction of the vehicle, but the height space in the vehicle does not meet the installation requirements of the projector. Alternatively, the optical path of the projector extends along the length or width direction of the vehicle, but the flat space of the vehicle does not meet the installation requirements of the projector.

[0043] In view of this, an embodiment of the present application provides a vehicle-mounted projector and a vehicle, wherein the vehicle-mounted projector includes a housing, a first layer of optical components and a second layer of optical components, wherein the first layer of optical components and the second layer of optical components are both disposed in the housing. By disposing one of the first layer of optical components and the second layer of optical components at the upper part of the housing and the other at the lower part of the housing, the first layer of optical components and the second layer of optical components are arranged up and down, and the illumination light emitted by the first layer of optical components propagates in sequence along the first layer of optical paths and the second layer of optical paths perpendicular to each other, the first layer of optical paths are located in the plane where the first layer of optical components are located, and the second layer of optical paths are perpendicular to the second layer of optical components, so that the second layer of optical components can convert the illumination light into an image. In this way, the vehicle-mounted projector can meet the installation requirements of the vehicle-mounted space and ensure a sufficient length of the optical path to improve the performance of the vehicle-mounted projector.

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] An embodiment of the present application provides a vehicle, which includes but is not limited to cars such as sedans, off-road vehicles, buses, trucks, tractors, and semi-trailers.

[0046] The vehicle includes a vehicle body and a vehicle projector, and the vehicle projector is installed on the vehicle body. For example, the vehicle projector is installed in the interior space of the vehicle body. The vehicle projector is used to project images, enrich the entertainment functions of the vehicle, and make the vehicle more intelligent. By projecting images in the vehicle with the vehicle projector, users can watch movies and TV shows, communicate via video, and process work on a large screen in the vehicle.

[0047] Figure 1 A schematic diagram of the structure of a vehicle-mounted projector provided in an embodiment of the present application. Figure 2 for Figure 1 Exploded structure diagram of the vehicle-mounted projector.

[0048] Combination Figure 1 and Figure 2 As shown, an embodiment of the present application provides a vehicle-mounted projector, which is applied to a vehicle, or in other words, the vehicle-mounted projector is installed on a vehicle.

[0049] The vehicle-mounted projector includes a housing 100, a first optical component 200, and a second optical component 300. The housing 100 is the main supporting structure of the vehicle-mounted projector, and the first optical component 200 and the second optical component 300 are both mounted on the housing 100. The first optical component 200 is used to emit illumination light and form an optical path for the propagation of the illumination light, and the illumination light can propagate along the optical path to the second optical component 300. The second optical component 300 is used to receive the illumination light propagated by the first optical component 200, and the second optical component 300 is loaded with image information for projection, and the second optical component 300 can convert the illumination light into an enlarged image, thereby realizing the image projection of the vehicle-mounted projector.

[0050] Continue to refer to Figure 1 and Figure 2The housing 100 may include a main body 110, which occupies most of the space of the housing 100 and is the main supporting structure of the housing 100. The housing 100 relies on the main body 110 to fix the first layer optical component 200 and the second layer optical component 300. In other words, the first layer optical component 200 and the second layer optical component 300 are both installed on the main body 110 of the housing 100.

[0051] The housing 100 may further include a mounting portion 120, which is connected to the main body 110. The vehicle-mounted projector may be mounted on a vehicle by means of the mounting portion 120, and the mounting portion 120 may be connected to the interior of the vehicle body to fix the vehicle-mounted projector inside the vehicle body. The mounting portion 120 may be integrally formed on the main body 110, or the housing 100 may be an integrally formed structure to enhance the integrity and consistency of the housing 100, and improve the structural strength and reliability of the housing 100.

[0052] For example, the housing 100 may be made of die-cast aluminum material, so as to reduce the weight of the housing 100 while ensuring the structural strength and reliability of the housing 100 , thereby improving the installation stability of the vehicle-mounted projector.

[0053] Among them, the bottom end of the shell 100 can be connected to the body of the vehicle. For example, the shell 100 can be installed on the rear side of the front bumper and the front grille of the vehicle body, and the shell 100 is fixed on the front anti-collision beam, for example. Alternatively, the bottom end of the shell 100 is connected to the middle channel or armrest box of the vehicle body. At this time, the mounting portion 120 can be connected to the bottom of the main body 110, and the vehicle-mounted projector is installed inside the vehicle body by relying on the mounting portion 120 at the bottom end of the shell 100. The main body 110 is supported on the mounting portion 120 so that the main body 110 is located at an appropriate spatial height inside the vehicle body, so that the optical path formed by the first layer of optical components 200 and the second layer of optical components 300 is located in a suitable space, ensuring that the vehicle-mounted projector can project images normally.

[0054] Of course, the top of the housing 100 can also be connected to the vehicle body. For example, the top of the housing 100 is connected to the inner top wall of the vehicle body. In this case, the mounting portion 120 can be connected to the top of the main body 110, and the vehicle-mounted projector can be installed inside the vehicle body by relying on the mounting portion 120 at the top of the housing 100. The main body 110 can be suspended under the mounting portion 120 so that the main body 110 is located at an appropriate spatial height inside the vehicle body, so that the optical path formed by the first layer optical component 200 and the second layer optical component 300 is located in a suitable space, ensuring that the vehicle-mounted projector can project images normally.

[0055] Among them, combined Figure 1 and Figure 2As shown, the main body 110 of the housing 100 may include an upper portion 111 and a lower portion 112 arranged in a vertical direction, one of the first layer optical assembly 200 and the second layer optical assembly 300 is located in the upper portion 111, and the other is located in the lower portion 112. The spatial layout of the first layer optical assembly 200 and the second layer optical assembly 300 may be designed according to the spatial height of the main body 110 and the desired image projection position.

[0056] By arranging the first layer optical component 200 and the second layer optical component 300 up and down, the vehicle-mounted projector has a double-layer optical path layout architecture. In this way, the shape and size of the vehicle-mounted projector are more reasonable, and the size of the vehicle-mounted projector in a single direction will not be too large, for example, the vehicle-mounted projector will not be too high or too long. The vehicle-mounted projector can meet the requirements of the vehicle space, can be smoothly installed in the vehicle body, and can ensure the stability and reliability of the installation of the vehicle-mounted projector.

[0057] Furthermore, since the vehicle-mounted projector has a double-layer optical path layout architecture, the layout space of the vehicle-mounted projector is more reasonable, and the components in the first layer of optical assembly 200 can be reasonably arranged. In this way, the vehicle-mounted projector can have an optical path of sufficient length, and the accuracy and uniformity of the irradiated light propagation can be guaranteed. Thus, the performance of the vehicle-mounted projector is improved to meet the harsh working conditions of the vehicle.

[0058] Combination Figure 1 and Figure 2 As shown, as an embodiment, the first optical component 200 may be located at the upper portion 111 of the main body 110, and the second optical component 300 may be located at the lower portion 112 of the main body 110. The illumination light emitted by the first optical component 200 in the upper portion 111 of the main body 110 may propagate along the optical path to the second optical component 300 in the lower portion 112 of the main body 110, and the second optical component 300 converts the illumination light into an image, and enlarges the image and projects it outward.

[0059] As another embodiment, the first optical component 200 may also be located in the lower portion 112 of the main body 110, and the second optical component 300 may be located in the upper portion 111 of the main body 110. The illumination light emitted by the first optical component 200 in the lower portion 112 of the main body 110 may propagate along the optical path to the second optical component 300 in the upper portion 111 of the main body 110, and the second optical component 300 converts the illumination light into an image, and enlarges the image and projects it outward.

[0060] In addition, refer to Figure 1 and Figure 2 The vehicle-mounted projector may further include a control component 400, and the control component 400 is used to control the working state of the vehicle-mounted projector. In other words, the control component 400 is used to control the first optical component 200 and the second optical component 300 to work.

[0061] The control component 400 may include a main control board 410, and the main control board 410 may include an electronic control unit (ECU). The main control board 410 may be integrated with a microprocessor (MCU), a memory (ROM, RAM), an input / output interface (I / O), and an analog-to-digital converter (A / D).

[0062] All components that need to be electronically controlled in the first layer optical assembly 200 and the second layer optical assembly 300 can be electrically connected to the main control board 410, and the vehicle projector is controlled by the main control board 410 to ensure stable and reliable operation of the vehicle projector and guarantee the working performance of the vehicle projector.

[0063] The control component 400 may further include a power control board 420, which may be electrically connected to a power source, and may provide current and voltage to various components in the first optical component 200 and the second optical component 300 that require current through the power control board 420. The power control board 420 may control the power of the power source, and control the current and voltage to remain stable. Thus, the working stability and reliability of the vehicle-mounted projector may be improved.

[0064] Exemplarily, the control component 400 can be mounted on the main body 110 of the housing 100, so that the control component 400 is electrically connected to the required components in the first layer optical component 200 and the second layer optical component 300. When the first layer optical component 200 and the second layer optical component 300 are constructed in a vertical manner and the main body 110 includes an upper portion 111 and a lower portion 112, a mounting position for the control component 400 can be reserved according to the layout structure of the first layer optical component 200 and the second layer optical component 300.

[0065] The control assembly 400 can be installed on the outside of the main body 110, and the control assembly 400 does not occupy the internal space of the main body 110, which is convenient for installing the first layer optical assembly 200 and the second layer optical assembly 300. For example, the main control board 410 can be installed on the top of the main body 110, and the power control board 420 can be installed on the side of the main body 110.

[0066] The optical path layout structure of the vehicle-mounted projector of this embodiment is described in detail below by taking the first optical component 200 located at the upper portion 111 of the main body 110 and the second optical component 300 located at the lower portion 112 of the main body 110 as an example.

[0067] Figure 3 This is a diagram of an optical path layout structure of a vehicle-mounted projector provided in an embodiment of the present application. Figure 3As shown, the optical path formed by the first optical component 200 located at the upper portion 111 of the main body 110 may include a first optical path and a second optical path. The first optical path may be located in the plane where the first optical component 200 is located, and the second optical path may be perpendicular to the first optical path. The illumination light emitted by the first optical component 200 propagates along the first optical path and the second optical path in sequence, and propagates to the second optical component 300 through the second optical path. The second optical component 300 receives the illumination light propagated by the second optical path, converts the illumination light into an image, and amplifies and projects the image outward.

[0068] Among them, the components in the first layer optical assembly 200 can be arranged in sequence along the planar direction in the upper portion 111 of the main body 110 to form a first layer optical path propagating along the planar direction in the upper portion 111 of the main body 110. For example, the first layer optical path can propagate along the circumferential direction of the upper portion 111 of the main body 110 to form a first layer optical path propagating in an annular manner in the upper portion 111 of the main body 110. In this way, the length of the first layer optical path is relatively long, which can ensure that the vehicle-mounted projector has an optical path of sufficient length, so as to ensure the accuracy and uniformity of the propagation of the irradiation light emitted by the first layer optical assembly 200, thereby improving the performance of the vehicle-mounted projector.

[0069] Furthermore, by sequentially arranging the components in the first optical assembly 200 along the plane direction of the upper portion 111 of the main body 110, it is also convenient to design the propagation direction of the optical path of the first optical assembly 200. After the illumination light propagates along the first optical path of the plane, the propagation direction can be converted to a second optical path perpendicular to the first optical path, so that the illumination light changes direction and propagates toward the lower portion 112 of the main body 110. The second optical assembly 300 can receive the illumination light, convert the illumination light into an image, and project the image after enlarging it.

[0070] Continue to refer to Figure 3 The first optical component 200 may include a light source 210, a color wheel 220, a first reflector 230, and a second reflector 240, which are sequentially arranged along a plane direction in the upper portion 111 of the main body 110. Specifically, the light source 210, the color wheel 220, the first reflector 230, and the second reflector 240 are sequentially arranged in a propagation direction of the first optical path.

[0071] The light source 210 is used to emit illumination light, which is usually white light. The illumination light propagates along the first optical path to the color wheel 220, and the color wheel 220 performs color filtering (color separation and filtration) on the illumination light, and separates the illumination light into red light, green light, and blue light. The separated illumination light propagates along the first optical path to the first reflector 230, and is reflected by the first reflector 230 in the plane direction of the upper part 111 of the main body 110 to the second reflector 240. The second reflector 240 reflects the illumination light, so that the illumination light propagates along the second optical path (perpendicular to the first optical path), so that the illumination light is irradiated to the second optical component 300, so as to be converted into an image by the second optical component 300, and finally forms an enlarged image to be projected outward.

[0072] Exemplarily, the light source 210 may be a laser light source or a light-emitting diode (LED) light source. Both laser light sources and LED light sources are solid-state light sources with a long service life, slow decay rate, excellent performance, and high reliability. For example, the light source 210 may be a laser light source, which has higher brightness and longer service life. A vehicle-mounted projector using a laser light source projects an image with higher clarity, more vivid and realistic colors, and higher image quality.

[0073] The color wheel 220 may adopt a three-color color wheel, which has three color filter areas of red, green and blue. Alternatively, the color wheel 220 may adopt a four-color color wheel, which has a transparent area in addition to the three color filter areas of red, green and blue, which can increase the brightness of the irradiated light. Alternatively, the color wheel 220 may adopt a six-color scheme or a seven-color scheme. The six-color scheme is that the color wheel 220 has six color filter areas of double red, green and blue, and the seven-color scheme is that the color wheel 220 adds a transparent area on top of the double red, green and blue, which can make the projection color richer and more accurate, and the video dynamic effect better.

[0074] Among them, a condenser 250 is also provided on the light-emitting side of the light source 210. The illumination light emitted by the light source 210 passes through the condenser 250 and then irradiates the color wheel 220. The condenser 250 is used to converge the illumination light emitted by the light source 210. The condenser 250 can improve the brightness and uniformity of the illumination light through the focusing effect of the condenser 250. In addition, the illumination light transmitted to the second optical component 300 has higher brightness and better uniformity, and the image converted and magnified by the second optical component 300 has higher brightness and higher definition, which is conducive to improving the image quality of the vehicle-mounted projector.

[0075] Continue to refer to Figure 3As shown, when the light emitting direction of the light source 210 and the surface of the color wheel 220 have an angle, the illumination light emitted by the light source 210 cannot be transmitted in a straight line to the color wheel 220. At this time, the first optical component 200 may further include a third reflector 260, which may be disposed between the light source 210 and the color wheel 220, and the illumination light emitted by the light source 210 is reflected to the color wheel 220 by the third reflector 260.

[0076] Taking the case where the light emitting direction of the light source 210 is perpendicular to the surface of the color wheel 220 as an example, the angle between the mirror surface of the third reflector 260 and the light emitting direction of the light source 210 can be 45°, and the angle between the mirror surface of the third reflector 260 and the axis of the light wheel can also be 45°. In this way, the illumination light emitted by the light source 210 can be transmitted to the color wheel 220 in a direction perpendicular to the light emitting direction of the light source 210 after being reflected by the third reflector 260.

[0077] Continue to refer to Figure 3 , along the propagation direction of the irradiation light, specifically along the first layer of light path, a first lens 270 may be further provided between the color wheel 220 and the first reflector 230. Since the color wheel 220 splits and filters the irradiation light, light beams of different colors are formed after the light is split by the color wheel 220, which may affect the uniformity of the light beam. Therefore, by providing the first lens 270 between the color wheel 220 and the first reflector 230, the first lens 270 is used to improve the uniformity of the light beam, and improve the accuracy and uniformity of the propagation of the irradiation light. In addition, the imaging effect of the vehicle-mounted projector is improved, and the projection image quality of the vehicle-mounted projector is improved.

[0078] When the first reflector 230 and the second reflector 240 are far apart and their mirror directions have an angle, the illumination light reflected by the first reflector 230 cannot propagate in a straight line to the second reflector 240. At this time, the first optical component 200 may further include a fourth reflector 280 and a fifth reflector 290. The fourth reflector 280 and the fifth reflector 290 are sequentially arranged between the first reflector 230 and the second reflector 240 along the propagation direction of the illumination light, specifically along the first optical path.

[0079] The irradiation light is reflected by the first reflector 230 to the fourth reflector 280, and the fourth reflector 280 reflects the irradiation light to the fifth reflector 290, and the fifth reflector 290 reflects the irradiation light to the second reflector 240. By sequentially arranging the fourth reflector 280 and the fifth reflector 290 between the first reflector 230 and the second reflector 240, the irradiation light can be propagated from the first reflector 230 to the second reflector 240. In addition, the propagation optical path of the irradiation light is increased, and the length of the first layer of optical path is extended, which is conducive to improving the optical performance of the first layer of optical components 200, and further, improving the projection effect of the vehicle-mounted projector.

[0080] Figure 4 Another optical path layout structure diagram of the vehicle-mounted projector provided in the embodiment of the present application. Figure 4 As shown, when there is a sufficient distance between the fifth reflector 290 and the second reflector 240, the first optical component 200 may further include a light homogenizer 201 and a second lens 202. Along the first optical path, the light homogenizer 201 and the second lens 202 are sequentially arranged between the fifth reflector 290 and the second reflector 240.

[0081] The light averaging plate 201 is used to improve the uniformity of the irradiated light, and the second lens 202 can be used to further even out the irradiated light, or to converge the irradiated light. With this arrangement, after the light averaging and focusing effects of the light averaging plate 201 and the second lens 202, the uniformity and brightness of the irradiated light can be improved. Furthermore, after the second optical component 300 converts the irradiated light into an image, the brightness and clarity of the image are higher, which can improve the image quality of the vehicle-mounted projector.

[0082] Reference Figure 3 or Figure 4 As shown, the second optical component 300 may include a display device 310 and a projection lens 320. After the illumination light is emitted from the first optical component 200, it is illuminated to the display device 310, and the display device 310 converts the illumination light into a digital image. The display device 310 reflects the light beam carrying the image information to the projection lens 320, and the projection lens 320 enlarges the image and projects the enlarged image to the screen 600.

[0083] The display device 310 may include a circuit board and a digital micromirror device (DMD) integrated on the circuit board, a digital processor, a memory and other devices. The DMD chip is formed by many tiny square reflective lenses (micromirrors) closely arranged in rows and columns and attached to the electronic nodes of a silicon wafer. Each micromirror corresponds to a pixel of the generated image, and all micromirrors together form a complete image.

[0084] The DMD chip is made of pure semiconductor and metal materials, and with a special electronic and mechanical design, it is extremely stable. When the car projector is working, the light is irradiated to the DMD chip, and the micro-mirrors on the surface of the DMD chip rotate to reflect the light beam to form a dynamic display image.

[0085] Continue to refer to Figure 3 or Figure 4Since the first optical component 200 and the second optical component 300 are in a vertical structure, after the irradiation light propagates from the first optical component 200 to the second optical component 300, the propagation direction in the second optical component 300 is usually parallel to the plane direction of the second optical component 300. For example, the irradiation light propagates in a straight line along the plane direction of the lower part 112 of the main body 110 in the second optical component 300. At this time, the surface of the DMD chip and the optical axis of the projection lens 320 are usually perpendicular to the second optical path, and the irradiation light emitted along the second optical path cannot propagate in a straight line to the DMD chip.

[0086] In this regard, the second optical component 300 may further include a sixth reflector 330, which is used to receive the illumination light emitted from the first optical component 200 and reflect the illumination light to the DMD chip. In other words, the illumination light emitted from the first optical component 200 is irradiated to the sixth reflector 330, and the sixth reflector 330 reflects the illumination light to the DMD chip, so that the DMD chip can accurately receive the illumination light emitted from the first optical component 200.

[0087] In addition, a heat sink 500 (see Figure 2 As shown, for example, a heat sink 500 may be provided on the light source 210, the color wheel 220 and the display device 310 to help these components dissipate heat through the heat sink 500, so that these components operate at a suitable temperature and the operating performance of these components is guaranteed.

[0088] Exemplarily, the heat sink 500 may include heat dissipation fins, and the heat of these components is conducted to the heat dissipation fins, and the heat is dissipated into the air through the heat dissipation fins. In some cases, the heat sink 500 may also include a heat dissipation fan, and the heat is quickly dissipated into the air through the heat dissipation fan to improve the heat dissipation efficiency and heat dissipation effect of the heat sink 500.

[0089] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A vehicle-mounted projector, characterized in that: include: The housing comprises a main body, wherein the main body comprises an upper part and a lower part arranged in a vertical direction; A first layer of optical components, located in one of the upper part and the lower part; the first layer of optical components emits illumination light, and the illumination light propagates along a first layer of optical path and a second layer of optical path in sequence; wherein the first layer of optical path is located in a plane where the first layer of optical components is located, and the second layer of optical path is perpendicular to the first layer of optical path; A second optical component is located at the other of the upper portion and the lower portion; the second optical component receives the illumination light propagating along the second optical path and converts the illumination light into an image.

2. The vehicle-mounted projector according to claim 1, characterized in that: The housing further comprises a mounting portion, the mounting portion being connected to the main body portion and being used for being connected to a vehicle body.

3. The vehicle-mounted projector according to claim 2, characterized in that: The first layer of optical components is located at the upper portion, and the second layer of optical components is located at the lower portion.

4. The vehicle-mounted projector according to any one of claims 1 to 3, characterized in that: The first layer of optical components includes a light source, a color wheel, a first reflector and a second reflector which are sequentially arranged on the first layer of optical path; The light source emits illumination light, the color wheel filters the illumination light, the first reflector reflects the illumination light to the second reflector, and the second reflector reflects the illumination light to the second optical component.

5. The vehicle-mounted projector according to claim 4, characterized in that: A condenser is provided on the light-emitting side of the light source, and the illumination light emitted by the light source is irradiated to the color wheel after passing through the condenser.

6. The vehicle-mounted projector according to claim 4, characterized in that: The light emitting direction of the light source forms an angle with the surface of the color wheel, and the first layer of optical components further comprises a third reflector; Along the first layer of light path, the third reflector is located between the light source and the color wheel, and the third reflector reflects the illumination light emitted by the light source to the color wheel.

7. The vehicle-mounted projector according to claim 4, characterized in that: Along the first layer of light path, a first lens is further arranged between the color wheel and the first reflector.

8. The vehicle-mounted projector according to claim 4, characterized in that: The first optical component further includes a fourth reflector and a fifth reflector; Along the first layer of light path, the fourth reflector and the fifth reflector are sequentially arranged between the first reflector and the second reflector; The fourth reflecting mirror reflects the illumination light reflected by the first reflecting mirror to the fifth reflecting mirror, and the fifth reflecting mirror reflects the illumination light reflected by the fourth reflecting mirror to the second reflecting mirror.

9. The vehicle-mounted projector according to any one of claims 1 to 3, characterized in that: The second optical component includes a display device and a projection lens. The display device converts the illumination light into an image, and the projection lens receives the image and projects it outward.

10. The vehicle-mounted projector according to claim 9, characterized in that: The second optical component further includes a sixth reflector configured to receive the illumination light and reflect the illumination light toward the display device.

11. A vehicle, characterized in that: It comprises a vehicle body and the vehicle-mounted projector according to any one of claims 1 to 10, wherein the vehicle-mounted projector is installed on the vehicle body.

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