Vehicle canopy glass

Abstract

This utility model provides a vehicle sunroof glass, which is composed of a multi-layer structure. Facing the outside of the vehicle is a dimming glass layer or a solar cell glass layer (1), and facing the inside of the vehicle is a functional layer or a dimming glass layer (2). The dimming glass layer or solar cell glass layer (1) and the functional layer or dimming glass layer (2) form a hollow cavity (3). The hollow cavity (3) is provided with an air inlet (4), which is connected to an air intake pipe (5). The air intake pipe (5) is connected to the air outlet system of the vehicle's air conditioning equipment. An air outlet A (6-1) is provided on the side of the hollow cavity (3) opposite to the air inlet (4). This solution can introduce air conditioning airflow into the hollow cavity, effectively eliminating the "high temperature exposure / low temperature frost" problem of the sunroof glass, maintaining its function, and improving the driving experience.

Description

Technical Field

[0001] This utility model relates to the field of vehicle accessories, and in particular to a vehicle canopy glass. Background Technology

[0002] Currently, dimmable sunroofs have gradually become a core competitive advantage of mid-to-high-end vehicles, evolving from a high-end feature. Their value in enhancing the driving experience far surpasses that of traditional sunroofs, making them an important factor for users when making a purchase decision.

[0003] The advantages of traditional panoramic sunroofs on vehicles are widely recognized. Through their large, transparent design and basic heat insulation structure, they offer multiple practical benefits: First, they maximize the vertical field of vision, providing an immersive "looking up and seeing the scenery" experience, whether commuting through the city or enjoying the starry night sky on a long journey. Second, they optimize the acoustic environment; high-quality panoramic glass, through its multi-layered laminated structure and sealing technology, effectively reduces wind and tire noise at high speeds, with some products reducing interior noise by 3-5 decibels. Third, they provide basic heat insulation; compared to designs without a panoramic sunroof, ordinary sunroofs with heat-insulating coatings can reduce solar radiation heat entering the vehicle by 20%-30%, preventing a sudden rise in interior temperature.

[0004] Building upon this foundation, the dimmable panoramic sunroof, through the integration of materials and electronic control technologies, offers core added value in three key areas: First, intelligent dynamic dimming. Utilizing electrochromic and liquid crystal technologies, it can steplessly adjust the light transmittance from 1% to 60% within 1 second to 3 minutes based on ambient light intensity and the needs of drivers and passengers, balancing both lighting and sun shading. Second, precise sun shading and light control. Unlike the physical blocking of traditional sunshades, the dimmable panoramic sunroof can achieve partial or full-area fogging, avoiding visual glare caused by direct sunlight without affecting side visibility. Third, highly efficient UV blocking. Through the properties of the functional layer materials, it can block more than 99% of UVA and UVB ultraviolet rays, protecting the skin of drivers and passengers from harm and delaying the aging and fading of the interior.

[0005] However, current smart sunroofs still face significant technical bottlenecks in heat insulation performance. Their heat insulation function primarily relies on a Low-E (low-emissivity) coating layer in the glass assembly—by depositing thin films of silver, indium tin oxide, etc., on the glass surface, they reflect infrared rays, which account for over 70% of the heat in sunlight, thereby reducing the sunroof glass's own temperature and heat conduction. However, this passive heat insulation solution has inherent flaws: when a vehicle is exposed to intense sunlight for extended periods, even with some infrared reflection, the glass itself still absorbs a large amount of solar radiation and accumulates heat, causing the sunroof area temperature to reach 60-80°C, far exceeding other parts of the vehicle interior. This high temperature not only accelerates the aging and failure of light-switching materials (such as electrochromic layers and sealing strips), significantly shortening the sunroof's lifespan, but also causes continuous heating of the driver and passengers' heads, drastically reducing comfort.

[0006] On the other hand, when the ambient temperature drops sharply or the temperature difference between the interior and exterior spaces is large, frost or condensation will appear on the surface of the canopy glass, which will also render the dimming glass layer or functional layer meaningless.

[0007] This invention, by designing a multi-layered structure for the panoramic glass and introducing air conditioning airflow into the hollow cavity, can effectively eliminate the problems of "high temperature exposure / low temperature frost" in panoramic glass, maintain the function of the panoramic glass, and improve the driving experience. Utility Model Content

[0008] This utility model proposes a canopy glass for transportation vehicles. By designing a multi-layered composite structure with a hollow cavity and connecting the hollow cavity to an air conditioning system, it can achieve both dimming function and rapid temperature regulation effect.

[0009] This utility model provides a canopy glass for a vehicle, which is composed of a multi-layer structure. The outer side of the vehicle is a dimming glass layer or a solar cell glass layer (1), and the inner side of the vehicle is a functional layer or a dimming glass layer (2). The dimming glass layer or solar cell glass layer (1) and the functional layer or dimming glass layer (2) form a hollow cavity (3). The hollow cavity (3) is provided with an air inlet (4), which is connected to an air inlet pipe (5). The air inlet pipe (5) is connected to the air outlet system of the vehicle's air conditioning equipment. An air outlet A (6-1) is provided on the side of the hollow cavity (3) opposite to the air inlet (4).

[0010] Furthermore, the canopy glass has a dimming glass layer (1) facing outwards from the vehicle and a functional layer (2) facing inwards from the vehicle; or, it has a solar cell glass layer (1) facing outwards from the vehicle and a dimming glass layer (2) facing inwards from the vehicle.

[0011] Furthermore, the number of air outlets A (6-1) is N.

[0012] Furthermore, the hollow cavity (3) is provided with n air outlets B (6-2) on the other side opposite to the air inlet (4), and N≥2n.

[0013] Furthermore, the dimming glass layer is selected from suspended particle dimming glass, polymer-dispersed liquid crystal dimming glass, electrochromic dimming glass, or dye liquid crystal dimming glass.

[0014] Furthermore, the functional layer is selected from starry sky glass, PET film, PC film, PMMA film or glass.

[0015] Furthermore, the starry sky glass includes a multi-fiber combined light-emitting film, a backlit laser-engraved starry sky film, a translucent leather starry sky film, or a projection starry sky film.

[0016] Furthermore, the solar cell glass layer is selected from organic solar cell glass layers or perovskite solar cell glass layers.

[0017] Furthermore, the thickness of the hollow cavity (3) is 2 to 20 mm.

[0018] Furthermore, the thickness of the hollow cavity (3) is 5-15 mm.

[0019] Furthermore, the dimming glass layer or solar cell glass layer (1) around the hollow cavity (3) and the functional layer or dimming glass layer (2) are connected by polymer gaskets and adhesives.

[0020] Furthermore, the adhesive is assembled and molded through a UV curing or thermosetting process.

[0021] Furthermore, the polymer material gasket is selected from thermoplastic or thermosetting plastics.

[0022] Furthermore, the polymer material gasket is selected from PVB film, EVA film, TPU film, TPO film, SGP film, silicone rubber, polyolefin, polyester, epoxy resin, phenolic resin or polyurethane.

[0023] Furthermore, the adhesive is formed by curing a precursor adhesive.

[0024] Furthermore, the curing process involves the precursor adhesive being cured by at least one of UV curing or thermal curing to form an adhesive.

[0025] Furthermore, the precursor adhesive contains functional groups that can be UV-cured or thermo-cured.

[0026] Furthermore, the precursor adhesive contains at least one of unsaturated double bond functional groups and epoxy functional groups.

[0027] Furthermore, the UV curing involves placing the sample under a UV lamp for curing, with a UV light intensity of 1000–3000 W / m². 2 The curing time is 10-60 seconds.

[0028] Furthermore, all the multi-layered structures of the canopy glass are curved.

[0029] Furthermore, the multi-layered structure of the canopy glass is provided with an edge seal around its perimeter.

[0030] Furthermore, the edge seal is selected from butyl rubber and polysulfide rubber.

[0031] Furthermore, the hollow cavity (3) is connected to sensors and an intelligent temperature control system on the vehicle for intelligent temperature control.

[0032] This invention features a specially designed multi-layered structure in the panoramic glass, incorporating a hollow cavity and connecting it to the vehicle's air conditioning system for real-time temperature regulation. This effectively ensures the working temperature of the panoramic glass, achieving both dimming and temperature control functions, and significantly enhancing the driving and riding experience. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without any creative effort.

[0034] Figure 1 This is a cross-sectional schematic diagram of the canopy glass in Embodiment 1 of this utility model;

[0035] Figure 2 This is a top view of the canopy glass in Embodiment 1 of this utility model;

[0036] The components include: 1. a dimming glass layer or a solar cell glass layer; 2. a functional layer or a dimming glass layer; 3. a hollow cavity; 4. an air inlet; 5. an air inlet pipe; and 6. an air outlet. Detailed Implementation

[0037] To better illustrate this utility model, the following specific embodiments are provided.

[0038] Example 1: Automotive Sunroof Glass

[0039] Suspended particle dimming glass is used as the dimming glass layer facing the outside of the car, and the functional layer facing the inside is starry sky glass containing a multi-fiber combined light-emitting film. The thickness of the hollow cavity between the two layers is fixed to 9mm by dispensing equipment. A 4mm diameter air inlet is set on the left side of the hollow cavity, which is connected to an 8mm diameter air intake pipe, which is connected to the air outlet of the car's air conditioning equipment. Eleven 2mm diameter air outlets are set on the other side of the hollow cavity, and three 2mm diameter air outlets are set on each of the other two sides of the hollow cavity.

[0040] A 15mm wide and 9mm thick PVC board was used as the support for the hollow cavity structure. A multi-layered structure was bonded together with UV-curable epoxy resin. The sample was then cured under a UV lamp with a UV light intensity of 2000 W / m². 2 The curing time was 30 seconds, resulting in Example 1 of the automotive sunroof glass product.

[0041] The principle of multi-fiber combined light-emitting film is that multiple LEDs and multiple optical fibers are combined to guide light.

[0042] Example 2: Automotive Sunroof Glass

[0043] Polymer-dispersed liquid crystal dimming glass is used as the dimming glass layer facing the outside of the car, and the functional layer facing the inside is starry sky glass containing a backlit laser-engraved starry sky film. The thickness of the hollow cavity between the two layers is fixed to 12mm by dispensing equipment. A 6mm diameter air inlet is set on the left side of the hollow cavity, which is connected to an 8mm diameter air intake pipe, which is connected to the air outlet of the car's air conditioning equipment. Twenty 3mm diameter air outlets are set on the other side of the hollow cavity, and five 2mm diameter air outlets are set on each of the other two sides of the hollow cavity.

[0044] A 15mm wide and 12mm thick silicone rubber was used as the support for the hollow cavity structure. A multi-layered structure was bonded together with two-component epoxy adhesive, and a butyl rubber sealing layer was applied around the perimeter of the canopy glass. The sample was cured under a UV lamp with a light intensity of 2000 W / m². 2 The curing time was 30 seconds, resulting in Example 2 of the automotive sunroof glass product.

[0045] The principle behind backlit laser-engraved starry sky film is that backlighting and laser engraving are used to illuminate the ceiling glass. RGB LED modules at both ends provide light sources of various colors, which are then guided into the inner layer of the laminated glass via a light strip. A patterned layer that scatters light is then created inside the laminated glass. The light undergoes multiple refractions and scatterings within the glass, ultimately achieving a fully illuminated effect on the inner surface of the glass.

[0046] Example 3: Ship Skylight Glass

[0047] Electrochromic dimming glass is used as the dimming glass layer facing outwards from the ship, while the functional layer facing inwards uses a projection starry sky film. The thickness of the hollow cavity between the two layers is fixed at 15mm using an adhesive dispensing device. A 6mm diameter air inlet is provided on the left side of the hollow cavity, which is connected to an 8mm diameter air intake pipe, which is connected to the air outlet of the vehicle's air conditioning system. Forty 3mm diameter air outlets are provided on the other side of the hollow cavity, and six air outlets are provided on each of the remaining two sides of the hollow cavity.

[0048] A 20mm wide, 15mm thick PET sheet was used as the support for the hollow cavity structure. A multi-layered structure was bonded together using acrylic-modified polyurethane adhesive, and a polysulfide sealant layer was applied around the perimeter of the canopy glass. The sample was cured under a UV lamp with an intensity of 2000 W / m². 2 The curing time is 30 seconds, resulting in Example 3 of the ship canopy glass product.

[0049] The principle of the projection starry sky film is to project the pattern onto the ceiling using vehicle projection technology.

[0050] Example 4: Ship Skylight Glass

[0051] Electrochromic dimming glass is used as the dimming glass layer facing outwards on the ship, while the functional layer facing inwards uses a projection starry sky film. The thickness of the hollow cavity between the two layers is fixed at 18mm using an adhesive dispensing device. The hollow cavity connects to sensors and an intelligent temperature control system on the vehicle for intelligent temperature control. An 8mm diameter air inlet is located on the left side of the hollow cavity, which connects to a 10mm diameter air intake pipe, which in turn connects to the air outlet of the vehicle's air conditioning system. Forty 5mm diameter air outlets are located on the other side of the hollow cavity, and six air outlets are located on each of the remaining two sides of the hollow cavity.

[0052] A 15mm wide and 18mm thick silicone rubber was used as the support for the hollow cavity structure. A multi-layered structure was bonded together with acrylic-modified polyurethane adhesive, and a polysulfide sealant layer was applied around the perimeter of the canopy glass. The sample was cured under a UV lamp with a light intensity of 1600W / m². 2 The curing time was 50 seconds, resulting in Example 4 of the ship canopy glass product.

[0053] Example 5: Automotive Sunroof Glass

[0054] The perovskite solar cell glass layer is used as the solar cell glass layer facing the outside of the car, and the functional layer facing the inside uses a backlight laser-engraved starry sky film. The thickness of the hollow cavity between the two layers is fixed to 12mm by dispensing equipment. A 6mm diameter air inlet is set on the left side of the hollow cavity, which is connected to an 8mm diameter air intake pipe, which is connected to the air outlet of the car's air conditioning equipment. Twenty 3mm diameter air outlets are set on the other side of the hollow cavity, and five air outlets are set on each of the other two sides of the hollow cavity.

[0055] A 15mm wide and 12mm thick silicone rubber was used as the support for the hollow cavity structure. A multi-layered structure was bonded together with two-component epoxy adhesive, and a butyl rubber sealing layer was applied around the perimeter of the canopy glass. The sample was cured under a UV lamp with a light intensity of 2000 W / m². 2 The curing time was 30 seconds, resulting in Example 5 of the automotive sunroof glass product.

[0056] Example 6: Ship Skylight Glass

[0057] Organic solar cell glass is used as the solar cell glass layer facing the outside of the car, while electrochromic dimming glass is used as the dimming glass layer facing the inside. The thickness of the hollow cavity between the two layers is fixed at 18mm using a dispensing device. The hollow cavity is connected to the sensors and intelligent temperature control system on the vehicle for intelligent temperature control. An 8mm diameter air inlet is set on the left side of the hollow cavity, which is connected to a 10mm diameter air intake pipe, which is connected to the air outlet of the vehicle's air conditioning equipment. Forty 5mm diameter air outlets are set on the other side of the hollow cavity, and six air outlets are set on each of the other two sides of the hollow cavity.

[0058] A 15mm wide and 18mm thick silicone rubber was used as the support for the hollow cavity structure. A multi-layered structure was bonded together with acrylic-modified polyurethane adhesive, and a polysulfide sealant layer was applied around the perimeter of the canopy glass. The sample was cured under a UV lamp with a light intensity of 1600W / m². 2 The curing time was 50 seconds, resulting in Example 6 of the ship canopy glass product.

[0059] The above description of the embodiments is merely to aid in understanding the method and core ideas of this utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model. Therefore, this utility model is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A canopy glass panel for a vehicle, characterized in that, The canopy glass is composed of multiple layers. The outer side facing the vehicle is a dimming glass layer or a solar cell glass layer (1), and the inner side facing the vehicle is a functional layer or a dimming glass layer (2). The dimming glass layer or solar cell glass layer (1) and the functional layer or dimming glass layer (2) form a hollow cavity (3). The hollow cavity (3) is provided with an air inlet (4), which is connected to an air inlet pipe (5). The air inlet pipe (5) is connected to the air outlet system of the vehicle's air conditioning equipment. An air outlet A (6-1) is provided on the side opposite to the air inlet (4) of the hollow cavity (3).

2. The vehicle canopy glass according to claim 1, characterized in that, The canopy glass has a dimming glass layer (1) facing outwards from the vehicle and a functional layer (2) facing inwards from the vehicle; or, it has a solar cell glass layer (1) facing outwards from the vehicle and a dimming glass layer (2) facing inwards from the vehicle.

3. The vehicle canopy glass according to claim 1, characterized in that, The number of air outlets A(6-1) is N.

4. The vehicle canopy glass according to claim 1, characterized in that, The hollow cavity (3) is provided with n air outlets B (6-2) on the other side opposite to the air inlet (4), and N≥2n.

5. The vehicle canopy glass according to claim 1, characterized in that, The dimming glass layer is selected from suspended particle dimming glass, polymer-dispersed liquid crystal dimming glass, electrochromic dimming glass, or dye liquid crystal dimming glass.

6. The vehicle canopy glass according to claim 1, characterized in that, The functional layer is selected from starry sky glass, PET sheet, PC sheet, PMMA sheet or glass.

7. The vehicle canopy glass according to claim 6, characterized in that, The starry sky glass includes a multi-fiber combined light-emitting film, a backlit laser-engraved starry sky film, a translucent leather starry sky film, or a projection starry sky film.

8. The vehicle canopy glass according to claim 1, characterized in that, The thickness of the hollow cavity (3) is 2 to 20 mm.

9. The vehicle canopy glass according to claim 1, characterized in that, The dimming glass layer or solar cell glass layer (1) around the hollow cavity (3) and the functional layer or dimming glass layer (2) are connected by polymer gaskets and adhesives.

10. The vehicle canopy glass according to claim 1, characterized in that, The multi-layered structure of the canopy glass is all curved.

11. The vehicle canopy glass according to claim 1, characterized in that, The hollow cavity (3) is connected to sensors and an intelligent temperature control system on the vehicle for intelligent temperature control.

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