Windshield for vehicle and vehicle

Abstract

The invention relates to the technical field of vehicles, in particular to a windshield for a vehicle and the vehicle, the windshield for the vehicle comprises an outer transparent plate, an inner transparent plate, an antireflection film and a metal film, the outer transparent plate and the inner transparent plate are arranged in a stacked mode, at least part of the outer transparent plate is an outer light-transmitting area with the transmittance of at least 93% for infrared light within the wavelength range of 900-1000 nm, and at least part of the inner transparent plate is an inner light-transmitting area with the transmittance of at least 93% for infrared light within the wavelength range of 900-1000 nm. At least part of the inner transparent plate is an inner light-transmitting area with the transmittance of at least 93% for infrared light within the wavelength range of 900-1000 nm, the metal film is arranged on the side, close to the inner light-transmitting area, of the outer light-transmitting area, the antireflection film is arranged on the side, away from the outer light-transmitting area, of the inner light-transmitting area, and the inner light-transmitting area and the outer light-transmitting area are oppositely arranged. By arranging the outer light-transmitting area, the inner light-transmitting area and the antireflection film, the transmissivity of infrared light within the wavelength range of 900-1000 nm is increased, and normal work of the laser radar is guaranteed. And the metal film has a heat insulation effect, so that the driving comfort is ensured.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicles, in particular to a vehicle windshield and a vehicle. BACKGROUND

[0002] In order to meet the needs of automatic driving, a laser radar is usually equipped on a vehicle. The laser radar is installed outside the vehicle and mainly has two installation modes. One is roof installation, which is high in installation position, is conducive to monitoring road conditions, and is not easy to be damaged in the event of an accident. However, when facing low obstacles, there is a recognition blind area, which affects the accuracy of recognition and the overall wind resistance coefficient of the vehicle. The performance and service life of the laser radar are greatly affected by the external environment. The other is installed at the front bumper position of the vehicle, which is easy to identify low obstacles. However, collision, scratching, flying stones and the like are easy to cause damage to the laser radar, affecting the safety of the vehicle. In view of the above problems, the demand for arranging the laser radar in the cabin of the vehicle is increasing.

[0003] In order to solve the shortcomings of the external laser radar, the laser radar can be arranged in the cabin of the vehicle, such as being installed on the inner side of the front windshield of the vehicle. The infrared light of the laser radar transmits through the front windshield to work. However, the current front windshield has a high absorption rate of infrared light, that is, the transmission rate of infrared light is low, which greatly reduces the detection distance of the laser radar, thereby affecting the normal work of the laser radar in the cabin. SUMMARY

[0004] In order to solve the above technical problems, the present disclosure provides a vehicle windshield and a vehicle.

[0005] In a first aspect, the present disclosure provides a vehicle windshield, comprising an outer transparent plate, an inner transparent plate, an anti-reflection film and a metal film, the outer transparent plate and the inner transparent plate are laminated, the outer transparent plate is at least partially an outer light transmission zone having a transmittance of at least 93% to infrared light in the wavelength range of 900-1000 nm, the inner transparent plate is at least partially an inner light transmission zone having a transmittance of at least 93% to infrared light in the wavelength range of 900-1000 nm, the metal film is arranged on the side of the outer light transmission zone close to the inner light transmission zone, the anti-reflection film is arranged on the side of the inner light transmission zone away from the outer light transmission zone, and the inner light transmission zone and the outer light transmission zone are oppositely arranged.

[0006] Optionally, the inner transparent plate has a transmittance of at least 93% to infrared light in the wavelength range of 900-1000 nm, and the outer transparent plate has a transmittance of at least 93% to infrared light in the wavelength range of 900-1000 nm.

[0007] Optionally, the outer transparent plate comprises a first transparent plate and a second transparent plate, the first transparent plate is provided with a first mounting hole, the second transparent plate is mounted in the first mounting hole, and the second transparent plate constitutes the outer light-transmitting area.

[0008] Optionally, the inner transparent plate comprises a third transparent plate and a fourth transparent plate, the third transparent plate is provided with a second mounting hole, the fourth transparent plate is mounted in the second mounting hole, and the fourth transparent plate constitutes the inner light-transmitting area.

[0009] Optionally, the part of the outer transparent plate constituting the outer light-transmitting area is any one of ultra-white glass, a PC plate, a PVC plate, a PE plate, and a PMMA plate.

[0010] Optionally, the part of the inner transparent plate constituting the inner light-transmitting area is any one of ultra-white glass, a PC plate, a PVC plate, a PE plate, and a PMMA plate.

[0011] Optionally, the metal film is a single metal layer, and the single metal layer is any one of a metal chromium layer, a metal aluminum layer, a metal silver layer, and a metal mercury layer.

[0012] The metal film is an aluminum-silver mixed layer.

[0013] Optionally, the vehicle windshield further comprises a PVB film, and the PVB film is arranged between the outer transparent plate and the inner transparent plate.

[0014] Optionally, the PVB film has a transmittance of at least 90% and an absorption rate of not higher than 10% for infrared light in a wavelength range of 900 nm-1000 nm.

[0015] In a second aspect, the present disclosure provides a vehicle, comprising the vehicle windshield provided in the first aspect, and the vehicle further comprises a laser radar, the laser radar is arranged in a cabin of the vehicle, and a laser beam of the laser radar passes through the inner light-transmitting area and the outer light-transmitting area.

[0016] Compared with the prior art, the technical scheme provided by the embodiments of the present disclosure has the following advantages:

[0017] By setting the outer light-transmitting area and the inner light-transmitting area, the inner light-transmitting area and the outer light-transmitting area both have a transmittance of at least 93% to infrared light in the wavelength range of 900nm-1000nm, and the anti-reflection film is used to increase the transmittance of the vehicle windshield to infrared light in the wavelength range of 900nm-1000nm, so that the transmittance of the laser beam of the laser radar can be improved, the detection distance of the laser radar is increased, a good window environment is provided for the laser radar arranged in the cabin of the vehicle, and normal operation of the laser radar is ensured. Moreover, the metal film can reduce the transmittance of solar energy, has a heat insulation effect, ensures driving comfort, and improves user experience. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, further serve to explain the principles of the disclosure.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the accompanying drawings required to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.

[0020] Figure 1 The structural schematic diagram of the vehicle windshield described in the embodiments of the present disclosure.

[0021] Among them,

[0022] 1, outer transparent plate; 2, inner transparent plate; 3, PVB film; 4, anti-reflection film; 5, metal film. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the accompanying drawings required to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.

[0024] In the following description, many specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present disclosure, not all embodiments.

[0025] At present, in order to meet the needs of automatic driving, a laser radar is generally equipped on a vehicle, and the laser radar is generally installed outside the vehicle, such as on the roof or the front bumper of the vehicle. When the laser radar is installed on the roof, the installation position is high, which is beneficial to monitoring the road conditions and is not easy to be damaged in the event of an accident. However, there is an identification blind area for low obstacles, which affects the accuracy of identification and also affects the wind resistance coefficient of the whole vehicle. Moreover, the external environment has a greater impact on the service life of the laser radar. When the laser radar is installed on the front bumper, low obstacles can be easily identified, but collision, scratching, flying stones and the like are easy to cause damage to the laser radar, which affects the safety of the vehicle.

[0026] In view of the above problems, the present inventors have designed a vehicle windshield which can cooperate with a laser radar (not shown in the figure) installed in the cabin of a vehicle. Specifically, the vehicle windshield comprises an outer transparent plate 1, an inner transparent plate 2, an anti-reflection film 4 and a metal film 5. The outer transparent plate 1 and the inner transparent plate 2 are stacked, the outer transparent plate 1 is at least partially an outer light-transmitting area having a transmittance of at least 93% for infrared light in the wavelength range of 900-1000 nm, the inner transparent plate 2 is at least partially an inner light-transmitting area having a transmittance of at least 93% for infrared light in the wavelength range of 900-1000 nm, the metal film 5 is arranged on the side of the outer light-transmitting area close to the inner light-transmitting area, the anti-reflection film 4 is arranged on the side of the inner light-transmitting area away from the outer light-transmitting area, and the inner light-transmitting area and the outer light-transmitting area are oppositely arranged.

[0027] Understandably, the inner light-transmitting area and the outer light-transmitting area are used for the laser beam of the laser radar to pass through. By arranging the outer light-transmitting area and the inner light-transmitting area, the inner light-transmitting area and the outer light-transmitting area both have a transmittance of at least 93% for infrared light in the wavelength range of 900-1000 nm, and the anti-reflection film 4 is used to increase the transmittance of the vehicle windshield for infrared light in the wavelength range of 900-1000 nm, so as to improve the transmittance of the laser beam of the laser radar, increase the detection distance of the laser radar, provide a good window environment for the laser radar arranged in the cabin of the vehicle, and ensure the normal operation of the laser radar. Moreover, the metal film 5 can reduce the transmittance of solar energy and has a heat insulation effect, thereby ensuring driving comfort and improving user experience.

[0028] It should be noted that the part of the outer transparent plate 1 constituting the outer light-transmitting area is any one of ultra-white glass, a PC plate, a PVC plate, a PE plate and a PMMA plate. The part of the inner transparent plate 2 constituting the inner light-transmitting area is any one of ultra-white glass, a PC plate, a PVC plate, a PE plate and a PMMA plate. Preferably, the part of the outer transparent plate 1 constituting the outer light-transmitting area is ultra-white glass. Preferably, the part of the inner transparent plate 2 constituting the inner light-transmitting area is ultra-white glass.

[0029] Reference Figure 1In some embodiments, the inner transparent plate 2 has a transmittance of at least 93% to infrared light in the wavelength range of 900-1000 nm, and the outer transparent plate 1 has a transmittance of at least 93% to infrared light in the wavelength range of 900-1000 nm.

[0030] Understandably, at this time, the inner transparent plate 2 is entirely an inner light-transmitting area, and the outer transparent plate 1 is entirely an outer light-transmitting area, so that the entire vehicle windshield has a high transmittance to the laser beam emitted by the laser radar, thereby allowing the installation position of the laser radar to be unrestricted, and allowing the installation position in the cabin to be selected according to actual needs.

[0031] At this time, the inner transparent plate 2 is entirely any one of ultra-white glass, a PC plate, a PVC plate, a PE plate, and a PMMA plate. The outer transparent plate 1 is entirely any one of ultra-white glass, a PC plate, a PVC plate, a PE plate, and a PMMA plate.

[0032] In other embodiments, the outer transparent plate 1 includes a first transparent plate and a second transparent plate, the first transparent plate is provided with a first mounting hole, the second transparent plate is mounted in the first mounting hole, and the second transparent plate constitutes an outer light-transmitting area. That is, at this time, part of the outer transparent plate 1 constitutes an outer light-transmitting area, at this time, the first transparent plate can be selected from a conventional windshield glass, and the second transparent plate is selected from a material having a transmittance of at least 93% to infrared light in the wavelength range of 900-1000 nm, such as ultra-white glass.

[0033] Further, the inner transparent plate 2 includes a third transparent plate and a fourth transparent plate, the third transparent plate is provided with a second mounting hole, the fourth transparent plate is mounted in the second mounting hole, and the fourth transparent plate constitutes an inner light-transmitting area. That is, at this time, part of the inner transparent plate 2 constitutes an inner light-transmitting area, at this time, the third transparent plate can be selected from a conventional windshield glass, and the fourth transparent plate is selected from a material having a transmittance of at least 93% to infrared light in the wavelength range of 900-1000 nm, such as ultra-white glass.

[0034] That is, the outer transparent plate 1 and the inner transparent plate 2 are selected from ultra-white glass at positions corresponding to the laser radar, without changing the glass material in other areas, which is beneficial to reduce the cost.

[0035] It should be noted that in other embodiments, the outer transparent plate 1 can entirely constitute an outer light-transmitting area, and the inner transparent plate 2 can partially constitute an inner light-transmitting area, at this time, a metal film 5 can be arranged at a position corresponding to the outer light-transmitting area and the inner light-transmitting area. Or the outer transparent plate 1 can partially constitute an outer light-transmitting area, and the inner transparent plate 2 can entirely constitute an inner light-transmitting area, at this time, an anti-reflection film 4 can be arranged at a position corresponding to the inner light-transmitting area and the outer light-transmitting area.

[0036] In some embodiments, the metal film 5 is a single metal layer, and the single metal layer is any one of a metal chromium layer, a metal aluminum layer, a metal silver layer, and a metal mercury layer. Alternatively, the metal film 5 can also be a mixed metal film layer, and the mixed metal film layer can be selected as an aluminum-zirconium mixed layer.

[0037] By arranging the metal film 5, when light outside the vehicle irradiates on the vehicle windshield, most of the sunlight is reflected by the metal film 5, so that the light inside the vehicle is darker than the light outside the vehicle, so that the driver can clearly see the environment outside the vehicle. Moreover, the metal film 5 reflects most of the sunlight, which can reduce heat radiation, thereby playing a heat insulation effect, and ensuring the comfort of driving.

[0038] With reference to Figure 1 The vehicle windshield further comprises a PVB film 3, and the PVB film 3 is arranged between the outer transparent plate 1 and the inner transparent plate 2. The PVB film 3 plays a role of bonding the outer transparent plate 1 and the inner transparent plate 2.

[0039] Further, in order to make the vehicle windshield have a transmittance of infrared light in the wavelength range of 900 nm-1000 nm, the PVB film 3 is selected to have a transmittance of at least 90% and an absorption rate of not higher than 10% for infrared light in the wavelength range of 900 nm-1000 nm, such as polyvinyl butyral (PVB) or an ionic intermediate layer film (SGP).

[0040] The present disclosure also provides a vehicle comprising the vehicle windshield and a laser radar, and the laser radar is arranged in the cabin of the vehicle, and the laser beam of the laser radar passes through the inner light transmission area of the inner transparent plate 2 and the outer light transmission area of the outer transparent plate 1. The vehicle has the technical effects of the vehicle windshield embodiments, which will not be repeated here.

[0041] It should be noted that, in this document, relational terms such as "first" and "second", and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the phrase "comprising a... " does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0042] The foregoing is merely illustrative of the various implementations of the present disclosure and the general principles thereof. Numerous modifications can be made to these illustrations, and equivalents can be substituted therefor, without departing from the scope of the present disclosure. The specific embodiments commensurate with the specific application are intended to be illustrative only and not limiting of the scope of the application as set forth in the following claims.

Claims

1. A windshield for a vehicle, characterized by comprising: The vehicle windshield comprises an outer transparent plate, an inner transparent plate, an anti-reflection film and a metal film, the outer transparent plate and the inner transparent plate are laminated, the outer transparent plate is at least partially an outer light-transmitting area having a transmittance of at least 93% to infrared light in a wavelength range of 900-1000 nm, the inner transparent plate is at least partially an inner light-transmitting area having a transmittance of at least 93% to infrared light in a wavelength range of 900-1000 nm, the metal film is arranged on a side of the outer light-transmitting area close to the inner light-transmitting area, the anti-reflection film is arranged on a side of the inner light-transmitting area away from the outer light-transmitting area, and the inner light-transmitting area and the outer light-transmitting area are oppositely arranged.

2. The windshield for a vehicle according to claim 1, characterized by The inner transparent plate has a transmittance of at least 93% to infrared light in a wavelength range of 900-1000 nm, and the outer transparent plate has a transmittance of at least 93% to infrared light in a wavelength range of 900-1000 nm.

3. The vehicle windshield according to claim 1, characterized by The outer transparent plate comprises a first transparent plate and a second transparent plate, the first transparent plate is provided with a first mounting hole, and the second transparent plate is mounted in the first mounting hole and constitutes the outer light-transmitting area.

4. The vehicle windshield according to claim 1, characterized by The inner transparent plate comprises a third transparent plate and a fourth transparent plate, the third transparent plate is provided with a second mounting hole, and the fourth transparent plate is mounted in the second mounting hole and constitutes the inner light-transmitting area.

5. The vehicle windshield according to claim 1, characterized by The part of the outer transparent plate constituting the outer light-transmitting area is any one of ultra-white glass, a PC plate, a PVC plate, a PE plate and a PMMA plate.

6. The vehicle windshield according to claim 1, characterized by The part of the inner transparent plate constituting the inner light-transmitting area is any one of ultra-white glass, a PC plate, a PVC plate, a PE plate and a PMMA plate.

7. The vehicle windshield according to claim 1, characterized by The metal film is a single metal layer, which is any one of a metal chromium layer, a metal aluminum layer, a metal silver layer and a metal mercury layer; or The metal film is an aluminum-silver mixed layer.

8. The vehicle windshield according to claim 1, characterized by The vehicle windshield further comprises a PVB film, which is arranged between the outer transparent plate and the inner transparent plate.

9. The windshield for a vehicle according to claim 8, characterized by The PVB film has a transmittance of at least 90% and an absorption rate of not higher than 10% to infrared light in a wavelength range of 900-1000 nm.

10. A vehicle characterized by comprising: The vehicle comprises a laser radar, the laser radar is arranged in a cabin of the vehicle, and a laser beam of the laser radar passes through the inner light-transmitting area and the outer light-transmitting area.

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