阅读说明：本技术 导光天窗总成 (Light guide skylight assembly ) 是由 王志鸿 陈信元 徐瑞琳 古志腾 彭龙翔 于 2020-09-03 设计创作，主要内容包括：本发明是关于一种导光天窗总成,在由至少两层的塑料所构成的基板旁侧设置光源模块、且在基板较外侧的那层塑料中添加颜色以构成有色背景,并能够选择性地在基板的多个塑料层中的至少一个塑料层设置多个导光微结构来将光源模块发出的光导引朝向基板内侧面射出。由此,能够使光源模块发的光能够经由基板传导并朝向基板内侧面发光,达到可丰富视觉感受的光装饰或是照明效果。并且,塑胶基板先通过热压制程形成具有曲面的塑胶板件后,再以埋入射出制程将一结合结构成型并固定在该塑胶板件上,可代替传统以玻璃粘合铁件的汽车天窗机构总成设计。本发明的导光天窗总成可减轻传统玻璃天窗、前后挡风玻璃、侧窗玻璃机构总成的重量。(The invention relates to a light guide skylight assembly, wherein a light source module is arranged beside a substrate formed by at least two layers of plastics, colors are added into the layer of plastics on the outer side of the substrate to form a colored background, and a plurality of light guide microstructures are selectively arranged on at least one of a plurality of plastic layers of the substrate to guide light emitted by the light source module to be emitted towards the inner side surface of the substrate. Therefore, the light emitted by the light source module can be conducted through the substrate and can emit light towards the inner side surface of the substrate, and the light decoration or illumination effect capable of enriching visual perception is achieved. And after the plastic substrate is formed into a plastic plate with a curved surface through a hot pressing process, a combination structure is formed and fixed on the plastic plate through an embedding and injecting process, and the design of the automobile skylight mechanism assembly with the traditional glass bonded iron piece can be replaced. The light guide skylight assembly can reduce the weight of the traditional glass skylight, front windshield glass, rear windshield glass and side window glass mechanism assembly.)

1. A light-guiding skylight assembly, comprising:

a substrate having an outer surface, an inner surface and a plurality of side surfaces vertically connected between the outer and inner surfaces; the substrate is a multi-layer structure comprising at least two layers of plastic material, comprising: the plastic composite material comprises a transparent engineering plastic layer and a colored upper polymethyl methacrylate layer positioned above the engineering plastic layer; wherein, the transmittance of the colored upper polymethyl methacrylate layer is less than that of the engineering plastic layer, and a colored background is formed above the transparent engineering plastic layer;

at least one light source module disposed at least one of the side surfaces of the substrate; the at least one light source module can emit light towards the engineering plastic layer, so that the light can travel along the engineering plastic layer in a conduction mode;

an easy-to-adhere layer located at an outer peripheral region of the inner surface of the substrate; and the number of the first and second groups,

a bonding structure fixed at the outer peripheral region of the inner surface of the substrate and having the easy-to-adhere layer; the combination structure is used for being combined with an external component, so that the substrate and the at least one light source can be connected with the external component through the combination structure.

2. The light-guide skylight assembly of claim 1, wherein a coloring agent is added to the top polymethylmethacrylate layer such that the top polymethylmethacrylate layer has the color and has a transmittance of 5% to 70%; the coloring agent comprises at least one of the following colors: black, red, blue, green; the engineering plastic layer is transparent and colorless or transparent and white, and the light transmittance is more than 90%.

3. The light guide skylight assembly of claim 1, further comprising a plurality of light guide microstructures disposed on at least one of the outer surface, the middle of the inner layer, or the inner surface of the base plate; the plurality of light guide microstructures can guide the light traveling along the horizontal direction of the engineering plastic layer to be emitted out from the plurality of light guide microstructures towards the lower part of the inner surface of the substrate; the light guide microstructures are arranged into a predetermined pattern, so that when the at least one light source module emits light, the light at the positions of the light guide microstructures is emitted from the lower part of the inner surface of the substrate, and the predetermined pattern of light emission formed by the arrangement of the light guide microstructures can be displayed on the inner surface of the substrate.

4. The light guide skylight assembly of claim 3, wherein phosphor is filled in the plurality of light guide microstructures to increase the brightness of the predetermined pattern of light emitted by the plurality of light guide microstructures.

5. The light guide skylight assembly of claim 3, wherein the plurality of light guiding microstructures are formed in the middle of the inner layer of the substrate by laser engraving.

6. The light guide skylight assembly of claim 3,

forming an upper HARD layer (HARD COATING) on the outer surface of the substrate, and forming a lower HARD layer on the inner surface of the substrate;

wherein, the plurality of light guide microstructures are arranged in at least one of the following positions: the upper polymethyl methacrylate layer and the lower surface of the engineering plastic layer.

7. The light guide skylight assembly of claim 3, wherein:

the substrate is a multilayer structure formed by co-extrusion (COEXTRUSION) of at least three layers of different materials, and comprises: the engineering plastic layer which is positioned in the middle and contains Polycarbonate (PC), the upper polymethyl methacrylate layer which is positioned above the engineering plastic layer, and the lower polymethyl methacrylate layer which is positioned below the engineering plastic layer; wherein, an upper HARD layer (HARD COATING) is formed above the upper polymethyl methacrylate layer, and a lower HARD layer is also formed below the lower polymethyl methacrylate layer; the lower polymethyl methacrylate layer is transparent and colorless or transparent and white, and the light transmittance is more than 90 percent;

wherein, the plurality of light guide microstructures are arranged in at least one of the following positions: the upper and lower polymethyl methacrylate layers.

8. The light guide skylight assembly of claim 7, wherein:

at least the upper hard layer of the substrate is further provided with a coating layer with a multilayer film structure, and the coating layer comprises: an adhesion layer, an anti-ultraviolet layer, and a wear layer;

the material of the adhesion layer comprises silicon dioxide (SiO)₂)；

The material of the anti-ultraviolet layer comprises titanium oxide (Ti)₃O₅)；

The wear-resistant layer is made of silicon dioxide (SiO)₂)；

Wherein, the coating layer further comprises an anti-infrared layer; the top surface of the film coating layer is further provided with a top surface hard layer.

9. The light guide skylight assembly of claim 1, further comprising at least one seal ring layer; the sealing ring layer is arranged on the surface of the side of the easy-to-adhere layer facing the combination structure, and the sealing ring layer is clamped between the contact surfaces of the easy-to-adhere layer and the combination structure.

10. The light guide skylight assembly of claim 9, wherein:

the substrate has a curved surface at least at the outer peripheral region of the inner surface;

the external member is a member located on a roof of a vehicle;

the combination structure is made of hard plastic material or metal material; when the combination structure is made of the hard plastic material, the combination structure is molded and fixed at the position of the outer peripheral edge area of the inner surface of the substrate and the position with the easy-to-adhere layer in an embedding and injecting mode, and the hard plastic material is one of the following materials: POLYMETHYL METHACRYLATE (PMMA), POLYCARBONATE (PC), ACRYLONITRILE-BUTADIENE-STYRENE copolymer (ABS), Polymannuronimide (PMMI), POLYETHYLENE TEREPHTHALATE (PET), POLYETHYLENE naphthalate 2,6-NAPHTHALENE DICARBOXYLATE (PEN), polyether sulfone (PES), and POLYIMIDE (PI); when the combination structure is made of the metal material, the combination structure is fixed at the position of the outer peripheral edge area of the inner surface of the substrate in a sticking way and provided with the easy-to-adhere layer;

the material of the easy adhesion layer comprises one of the following materials: AMINE (AMINES) and HETEROCYCLIC AMINE (HETEROCYCLIC AMINE), SILANE (SILANE) compound, POLYURETHANE (PU), and the easy adhesion layer is used for improving the bonding strength between the substrate and the bonding structure;

the sealing ring layer is formed by coating one or more sealing ring layers in a ring shape along the outer peripheral area on the surface of the easy-to-adhere layer facing to the combination structure in a dispensing manner, and the material of the sealing ring layer comprises one of the following materials: SILICONE (SILICONE), POLYURETHANE (PU) for improving the sealing between the substrate and the bonding structure.

11. The light guide skylight assembly of claim 3, wherein the base plate is weakened by a material at a predetermined location such that the base plate forms a breakable structure at the weakened predetermined location.

12. The light guide skylight assembly of claim 11, wherein the breakable structure is formed by one of:

densely distributing points in a partial area of the substrate in a mechanical or laser processing mode, so that the structure at the position is weakened and easy to break, and the easy-to-break structure is formed;

forming an annular dotted line structure in a partial area of the internal material of the substrate by energy irradiation or interface of different materials, so that the structure at the annular dotted line structure is weakened and is easy to break, thereby forming the breakable structure;

forming a plurality of vertical dotted line structures and a plurality of horizontal dotted line structures in the substrate in an energy irradiation manner, so that the structures of the vertical dotted line structures and the horizontal dotted line structures are weakened and are easy to break, and the easy-to-break structure is formed;

the breakable structure also has the efficacy of guiding the light which travels in the horizontal direction in the substrate to be emitted from the breakable structure to the lower part of the substrate, so that a user can identify the position of the breakable structure.

Technical Field

The present invention relates to a light guide skylight assembly, and more particularly, to a light guide skylight assembly, in which a light source module is disposed beside a substrate formed by at least two layers of plastic, and a color is added to the layer of plastic outside the substrate to form a colored background, so that light emitted from the light source module can be transmitted through the substrate and emitted toward the inner side of the substrate.

Background

In recent years, light-permeable sheets made of plastic materials have been developed to replace conventional glass sheets for making car skylights, windshields, and side windows. In addition, the conventional glass skylight for the vehicle has no lighting function, and the roof lamp is arranged at the roof of the vehicle, so that the space is limited, the effective lighting area of the roof lamp is limited, and the sufficient lighting function cannot be provided. The vehicle model using the panoramic sunroof has no space for installing the roof light, thereby abandoning the illumination function of the light source in the vehicle from top to bottom. To overcome this drawback, manufacturers have developed a light bar around a vehicle sunroof made of glass or plastic to provide a light decoration effect.

Referring to fig. 1A (prior art) and fig. 1B (prior art), a cross-sectional view and a top view of an example of a prior art skylight for a vehicle are respectively shown. In order to achieve a light decorative effect in a conventional sunroof, a light bar 02 is annularly provided around the outer periphery of a transparent plate 01 made of glass or plastic. Since the transparent plate 01 of the automotive sunroof has no light guiding or decorating function in the prior art, the light emitted by the light bar 02 can only form a visual effect of a circle of thin ring-shaped apertures around the plate 01, and the transparent plate 02 of the automotive sunroof itself has no light emitting surface, which not only has a monotonous visual perception, but also cannot provide a light decorating composition of a surface light source.

There are many types of plastics, among which, engineering plastics made of polycarbonate (abbreviated as PC) have the advantages of high transparency, free dyeing property, high strength, elastic coefficient, high impact strength, wide range of using temperature, low forming shrinkage, good dimensional stability, good weather resistance, no odor and no harm to human body, and are suitable for manufacturing transparent substrates with curved surfaces or special structures to replace brittle and non-moldable glass plates. For example, automotive sunroofs are often made of Polycarbonate (PC) engineering plastics. However, Polycarbonate (PC) has the disadvantages of poor abrasion resistance and yellowing tendency under ultraviolet irradiation. Therefore, in the prior art, a hard layer with abrasion resistance is added on the outer surface of a Polycarbonate (PC) substrate, and an Ultraviolet (UV) absorber is added in the substrate body, so that the abrasion resistance of the substrate is improved and the yellowing phenomenon is reduced. The addition mode belongs to 'light absorption', UV light still enters the substrate and is blocked, and although the UV blocking function is realized in the vehicle, the problems of UV yellowing and UV deterioration of the substrate are still caused.

In addition, in order to provide design and visual aesthetics on the appearance and shape, the current sunroof plate is not a simple flat plate structure, but is mostly a plastic plate with a smooth curved surface. In the prior art, the sunroof structure for connecting the car body is formed by a plastic plate or a glass plate, and the metal connecting structure (or mechanism) is adhered to the plastic plate (or glass plate) by adhesive. Because the plastic plate or the glass plate used for manufacturing the vehicle skylight is a hard plate with a curved surface, after the metal-made and hard combination structure (or mechanism) is adhered by the adhesive, a gap is inevitably generated between the joint surfaces of the plastic (or glass) plate and the combination structure (or mechanism), so that the waterproof and moistureproof effects are reduced, and the combination strength of the plastic plate and the glass plate is further reduced. In addition, the combination structure (or mechanism) made of metal material has the disadvantages of heavy weight (causing more oil consumption and power consumption during vehicle driving), easy cracking, no Ultraviolet (UV) resistance and heat insulation effect, and poor combination between metal and plastic (or glass) plate, and still has room for improvement.

Disclosure of Invention

The main objective of the present invention is to provide a light guide skylight assembly, wherein a light source module is disposed beside a substrate formed by at least two layers of plastics, and a color is added to the layer of plastics on the outer side of the substrate to form a colored background, and a plurality of light guide microstructures are selectively disposed on at least one of a plurality of plastic layers of the substrate to guide light emitted from the light source module to emit the light toward the inner side of the substrate, so that the light emitted from the light source module can be transmitted through the substrate and emitted toward the inner side of the substrate, thereby achieving a light decoration or illumination effect capable of enriching visual perception.

Another objective of the present invention is to provide a light guiding sunroof assembly, which is formed by hot pressing at least two layers of plastic substrates to form a curved plastic plate, and then forming and fixing a combination structure on the plastic plate by an insert-injection process, instead of the conventional sunroof assembly design using glass to bond iron members. The light-permeable plastic plate structure with the curved surface comprises a light-weight polymer skylight material and a light-weight plastic ejection piece mechanism assembly, and the weight of the traditional glass skylight, the front windshield glass, the rear windshield glass and the side window glass mechanism assembly can be reduced.

To achieve the above object, the present invention provides a light guide skylight assembly, comprising:

a substrate having an outer surface, an inner surface and a plurality of side surfaces vertically connected between the outer and inner surfaces; the substrate is a multi-layer structure comprising at least two layers of plastic material, comprising: the plastic composite material comprises a transparent engineering plastic layer and a colored upper polymethyl methacrylate (PMMA, organic glass and acrylic) layer positioned above the engineering plastic layer; wherein, the transmittance of the colored upper polymethyl methacrylate layer is less than that of the engineering plastic layer, and a colored background is formed above the transparent engineering plastic layer;

at least one light source module disposed at least one of the side surfaces of the substrate; the at least one light source module can emit light towards the engineering plastic layer, so that the light can travel along the engineering plastic layer in a conduction mode;

an easy-to-adhere layer located at an outer peripheral region of the inner surface of the substrate; and the number of the first and second groups,

a bonding structure fixed at the outer peripheral region of the inner surface of the substrate and having the easy-to-adhere layer; the combination structure is used for combining with an external component, so that the substrate and the at least one light source can be connected with the external component through the combination structure.

In one embodiment, a coloring agent is added into the upper polymethyl methacrylate layer, so that the color of the upper polymethyl methacrylate layer is between 5% and 70% of the transmittance of the upper polymethyl methacrylate layer.

In one embodiment, the coloring agent comprises at least one of the following colors: black, red, blue, green; the engineering plastic layer is transparent and colorless or transparent and white, and the light transmittance is more than 90%.

In one embodiment, the light guide skylight assembly further includes a plurality of light guide microstructures disposed on at least one of the outer surface or the inner surface of the substrate; the plurality of light guide microstructures can guide the light traveling along the horizontal direction of the engineering plastic layer to be emitted out from the plurality of light guide microstructures towards the lower part of the inner surface of the substrate; the light guide microstructures are arranged into a predetermined pattern, so that when the at least one light source module emits light, the light at the positions of the light guide microstructures is emitted from the lower part of the inner surface of the substrate, and the predetermined pattern of light emission formed by the arrangement of the light guide microstructures can be displayed on the inner surface of the substrate.

In one embodiment, an upper Hard layer (Hard Coating) is formed on the outer surface of the substrate, and a lower Hard layer is also formed on the inner surface of the substrate; wherein, the plurality of light guide microstructures are arranged in at least one of the following positions: the upper polymethyl methacrylate layer and the lower surface of the engineering plastic layer.

In one embodiment, the substrate is a multi-layer structure formed by co-extrusion (coextrusion) of at least three different materials, which includes: the engineering plastic layer which is positioned in the middle and contains Polycarbonate (PC), the upper polymethyl methacrylate layer which is positioned above the engineering plastic layer, and the lower polymethyl methacrylate layer which is positioned below the engineering plastic layer; wherein, an upper Hard layer (Hard Coating) is formed above the upper polymethyl methacrylate layer, and a lower Hard layer is also formed below the lower polymethyl methacrylate layer; the lower polymethyl methacrylate layer is transparent and colorless or transparent and white, and the light transmittance is more than 90 percent; wherein, the plurality of light guide microstructures are arranged in at least one of the following positions: the upper and lower polymethyl methacrylate layers.

In one embodiment, a coating layer having a multi-layer film structure is further disposed on at least the upper hard layer of the substrate, and the coating layer includes: an adhesion layer, an anti-ultraviolet layer, and a wear layer; the material of the adhesion layer comprises silicon dioxide (SiO)₂) (ii) a The material of the anti-ultraviolet layer comprises titanium oxide (Ti)₃O₅) (ii) a The wear-resistant layer is made of silicon dioxide (SiO)₂)。

In one embodiment, the film further comprises an anti-infrared layer.

In one embodiment, the coating layer further comprises a top hard layer on the top surface.

In one embodiment, the light guide skylight assembly further includes at least one seal ring layer; the sealing ring layer is arranged on the surface of the side of the easy-to-adhere layer facing the combination structure, and the sealing ring layer is clamped between the contact surfaces of the easy-to-adhere layer and the combination structure.

In one embodiment, the substrate has a curved surface at least at the outer peripheral region of the inner surface; the external member is a member located on a roof of a vehicle; the combination structure is made of hard plastic material or metal material; when the combination structure is made of the hard plastic material, the combination structure is molded and fixed at the position of the outer peripheral edge area of the inner surface of the substrate and the position with the easy-to-adhere layer in an embedding and injecting mode, and the hard plastic material is one of the following materials: polymethyl methacrylate (abbreviated to PMMA), Polycarbonate (abbreviated to PC), Acrylonitrile-Butadiene-Styrene copolymer (abbreviated to ABS), polymetaphenylimide (abbreviated to PMMI), Polyethylene terephthalate (abbreviated to PET), Polyethylene naphthalate (abbreviated to PEN 2,6-naphthalene dicarboxylate, abbreviated to PEN), Polyethersulfone (abbreviated to PES), Polyimide (abbreviated to PI); when the combination structure is made of the metal material, the combination structure is fixed at the position of the outer peripheral edge area of the inner surface of the substrate in a sticking way and provided with the easy-to-adhere layer; the material of the easy adhesion layer comprises one of the following materials: amines (Amines) and heterocyclic Amines (heterocyclic Amines), Silane (Silane) compounds, and Polyurethanes (PU), wherein the easy adhesion layer is used for improving the bonding strength between the substrate and the bonding structure; the sealing ring layer is formed by coating one or more sealing ring layers in a ring shape along the outer peripheral area on the surface of the easy-to-adhere layer facing to the combination structure in a dispensing manner, and the material of the sealing ring layer comprises one of the following materials: silicone and Polyurethane (PU) for improving the sealing property between the substrate and the bonding structure.

In one embodiment, fluorescent powder is filled in the plurality of light guide microstructures to increase the brightness of the predetermined pattern of light emitted by the plurality of light guide microstructures.

In one embodiment, the plurality of light guide microstructures are formed in the middle of the inner layer of the substrate by laser engraving.

In one embodiment, a material weakening process is performed at a predetermined position of the substrate, so that the substrate forms a breakable structure at the weakened predetermined position.

In one embodiment, the breakable structure is formed by densely distributing points on a portion of the substrate by mechanical or laser processing, so that the structure is weakened and easily broken.

In one embodiment, an annular dotted line structure is formed on a partial region of the material inside the substrate by energy irradiation or interface of different materials, so that the structure at the annular dotted line structure is weakened and is easily broken to form the breakable structure.

In an embodiment, a plurality of vertical dotted line structures and a plurality of horizontal dotted line structures are formed inside the substrate by energy irradiation, so that the vertical dotted line structures and the horizontal dotted line structures are weakened and are easily broken to form the breakable structure.

In one embodiment, the breakable structure also has the function of guiding the light traveling in the horizontal direction inside the substrate from the breakable structure to be emitted toward the lower side of the substrate, so that the user can identify the position of the breakable structure.

Drawings

Fig. 1A (prior art) and 1B (prior art) are a schematic cross-sectional view and a schematic top view respectively illustrating an example of a prior art sunroof provided with a light bar around the sunroof.

Fig. 2A and 2B are a schematic cross-sectional view a-a and a schematic top view of a light guide skylight assembly according to a first embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view of a light guide skylight assembly according to a second embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view of a light guide skylight assembly according to a third embodiment of the present invention.

Fig. 5A and 5B are a schematic cross-sectional view and a schematic top view of a light guide skylight assembly according to a fourth embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view of a light guide skylight assembly according to a fifth embodiment of the present invention.

FIG. 7 is a schematic cross-sectional view of a light guide skylight assembly according to a sixth embodiment of the present invention.

FIG. 8 is a schematic view of an embodiment of the predetermined pattern of light emission formed by the plurality of light guiding microstructures arranged in the light guiding skylight assembly of the present invention.

FIG. 9 is a schematic view of another embodiment of the predetermined pattern of light emission formed by the plurality of light guiding microstructures arranged in the light guiding skylight assembly of the present invention.

FIG. 10 is a schematic cross-sectional view of a light guide skylight assembly according to a seventh embodiment of the present invention.

FIG. 11 is a cross-sectional view of an eighth embodiment of a light guide skylight assembly of the present invention.

FIG. 12A is a schematic view of a first embodiment of a coating disposed on a substrate in accordance with the invention as shown in FIG. 11.

FIG. 12B is a diagram of a second embodiment of a coating disposed on a substrate according to the present invention.

FIG. 12C is a diagram of a third embodiment of a coating disposed on a substrate in accordance with the present invention.

Fig. 13A-13C are schematic diagrams illustrating breakable structures disposed on a substrate according to three embodiments of the invention.

List of reference numerals: 01-plate; 02-lamp strip; 10-a substrate; 11-engineering plastic layer; 12. 13-a polymethyl methacrylate layer; 14. 15, 26-hard layer; 100-light emitting area; 101-light spot; 110-concave space; 141. 151-light guide microstructure; 20. 20 a-coating a film layer; 21-an adhesion layer; 22-ultraviolet resistant layer; 23-wear layer; (ii) a 24-infrared ray resistant layer; 25-wear-resistant layer; 30-light source module; 31-light emitting diodes; 41-area; 411 to densely arranging points; 42. 431, 432-dotted line structure; 81-easy adhesion layer; 82. 82 a-a binding structure; 83-sealing ring layer.

Detailed Description

The light guide skylight assembly is characterized in that a light source module is arranged beside a substrate formed by at least two layers of plastics, colors are added into the layer of plastics on the outer side of the substrate to form a colored background, and a plurality of light guide microstructures are selectively arranged on at least one of a plurality of plastic layers of the substrate to guide light emitted by the light source module to be emitted towards the inner side surface of the substrate. Therefore, the light emitted by the light source module can be conducted by the substrate and can emit light towards the inner side surface of the substrate, and the light decoration or illumination effect capable of enriching visual perception is achieved. And after the plastic substrate is formed into a plastic plate with a curved surface through a hot pressing process, a combination structure is formed and fixed on the plastic plate through an embedding and injecting process, and the design of the automobile skylight mechanism assembly with the traditional glass bonded iron piece can be replaced. The light guide skylight assembly comprises a light-weight polymer skylight material, a light source module and a light-weight plastic ejection piece mechanism assembly, can reduce the weight of the traditional glass skylight, front and rear windshields and side window glass mechanism assemblies, is particularly suitable for being applied to oil-electricity hybrid electric vehicles and all-electric vehicles which need light-weight specifications, and has light decoration or light illumination effects.

In order to more clearly describe the light guide skylight assembly of the present invention, the following description will be made in detail with reference to the drawings.

Referring to fig. 2A and 2B, a cross-sectional view a-a and a top view of a light guide skylight assembly according to a first embodiment of the present invention are respectively shown. In a first embodiment of the present invention, a light guide skylight assembly includes: a substrate 10, at least one light source module 30, an easy adhesion layer 81 and a bonding structure 82.

The substrate 10 has an outer surface (upper surface), an inner surface (lower surface), and a plurality of side surfaces vertically connected between the outer and inner surfaces. In a first embodiment, the substrate 10 is a multi-layer structure formed by co-extrusion (coextrusion) of at least two layers of rigid plastic materials, and includes: a transparent engineering plastic layer 11 containing Polycarbonate (PC), and a colored upper polymethylmethacrylate layer 12 (PMMA) positioned above the engineering plastic layer 11. An upper Hard layer 14 (HC) is formed on the outer surface of the substrate 10 (i.e., the upper surface of the upper polymethylmethacrylate layer 12), and a lower Hard layer 15 is formed on the inner surface of the substrate 10 (i.e., the lower surface of the engineering plastic layer 11). A coloring agent is added into the upper polymethylmethacrylate layer 12 to make the upper polymethylmethacrylate layer 12 have a color and a transmittance of 5% to 70%. Wherein the coloring agent comprises at least one of the following colors: black, red, blue, green, or other relatively darker colors. The engineering plastic layer 11 is transparent and colorless or transparent and white, and the transmittance is more than 90%. Therefore, the transmittance of the colored upper polymethyl methacrylate layer 12 is not only less than that of the engineering plastic layer 11, but also a colored background can be formed above the transparent engineering plastic layer 11; in a preferred embodiment, the transmittance of the upper polymethylmethacrylate layer 12 as the colored background is between 5% to 20%, thereby achieving a good sun-shading function of the vehicle sunroof.

The at least one light source module is disposed 30 at least one of the side surfaces of the substrate 10. The at least one light source module 30 can emit light toward the engineering plastic layer 11, so that the light can travel along the engineering plastic layer 11 in a transverse conduction manner. In the present embodiment, the at least one Light source module 30 includes at least two Light bars (LED Light bars) respectively disposed in an inner concave space 110 on two opposite side surfaces of the engineering plastic layer 11, so that the Light bars are embedded and can be hidden in the mechanical design of the vehicular skylight substrate 10. Each light bar can provide a plurality of point light sources or a line light source, which respectively includes a plurality of Light Emitting Diodes (LEDs) 31 and a circuit component (not shown) for carrying the LEDs 31. The circuit element is electrically connected to the light emitting diodes 31, and has a connector (not shown) for connecting to a computer or power supply of the vehicle, so as to transmit power and control signals of the vehicle to each light bar for lighting. The light emitting diodes 31 emit light toward the interior of the engineering plastic layer 11, and since the colored upper polymethyl methacrylate layer 12 forms a dark background on the upper surface of the engineering plastic layer 11, the light emitted from the light source module 30 enters the engineering plastic layer 11 and travels along the engineering plastic layer 11 in a transverse conduction manner, and finally emits light from the lower surface of the engineering plastic layer 11 (i.e., the inner surface of the substrate 10). Therefore, the light guide skylight assembly of the invention can guide the light emitted by the light source module 30 to emit light towards the inner surface of the substrate 10 through the substrate 10 consisting of the dark upper polymethyl methacrylate layer 12 and the transparent engineering plastic layer 11, thereby achieving the visual effect of light decoration or light illumination.

In the present invention, the material composition of the upper and lower hard layers 14 and 15 may include a nano inorganic material and/or an organic-inorganic hybrid ultraviolet oligomer or a Silicone base (Silicone base) oligomer, which can provide a light weight polymer plastic substrate 10 with high hardness and excellent abrasion resistance Test (Taber Test) characteristics on the outer surface and the inner surface, and maintain high transparency and low haze, thereby providing a hard and abrasion resistant hard protective layer on the outer surface and the inner surface of the substrate 10. In this embodiment, the hard layers 14 and 15 comprise a high glass transition temperature Tg (120 ℃) UV-elastopolymer oligomer or a high Tg monomer (240 ℃), which provides a high impact resistance, high flexibility and high stability at high temperature for the adhesive surface of the polymer plastic material, and can improve the reliability of high temperature ring test or high temperature and high humidity ring test. The thickness and shape of the substrate 10 vary from application to application, and if the vehicle sunroof of the present invention is taken as an example, the thickness of the substrate 10 is generally between 3mm and 12 mm. The thickness of the engineering plastic layer 11 is about 60-99.99% of the total thickness of the substrate, and the thickness of the polymethyl methacrylate layer 12 is about 0.01-40% of the total thickness of the substrate.

The hard layers 14, 15 of the present invention are formulated to include organic-inorganic hybrid UV oligomers, which have relatively low cross-linking densities, and can form abrasion resistant hard coatings with low shrinkage and good flexibility, relative to conventional high cross-linking density prior art hard layer formulations. The inorganic material in the hard layers 14, 15 of the present invention can contribute to the surface physical properties, resulting in a coating having high hardness and high abrasion resistance. Furthermore, the hard layers 14 and 15 of the present invention comprise high Tg UV elastomer oligomers and high Tg monomers, and have better high temperature stability compared to the conventional high crosslink density hard layer formulations of the prior art, so that the present invention has better thermal formability during high temperature processing, and can bend the UV cured composite skylight material into a free curvature.

The adhesion facilitating layer 81 is located at an outer peripheral region of the inner surface of the substrate 10. The bonding structure 82 is fixed at the position of the easy-to-adhere layer 81 on the outer peripheral region of the inner surface of the substrate 10. The combining structure 82 is used for combining with an external member disposed on the vehicle roof, so that the substrate 10 together with the at least one light source module 30 can be connected to the external member through the combining structure 82, and further positioned on the vehicle roof.

In the present embodiment, the easy adhesion layer 81 is located at an outer peripheral region of the inner surface of the substrate 10, and is used to improve the bonding strength and the adhesion between the substrate 10 and the bonding structure 82. In the present invention, the material of the easy adhesion layer 81 includes one of the following materials: amines (Amines) and heterocyclic Amines (heterocyclic Amines), silanes (Silane) compounds, and Polyurethanes (PU) are applied to the outer peripheral region of the inner surface of the substrate 10 by precision wet coating, which provides good adhesion between dissimilar materials, and facilitates passing of various environmental aging tests. Furthermore, the easy adhesion layer 81 can be mixed with pigment (for example, black pigment) so that the easy adhesion layer 81 can also have the function of forming an ink printing layer on the inner surface of the substrate 10.

The bonding structure 82 is fixed at the outer peripheral region of the inner surface of the substrate 10 and has the easy adhesion layer 81. The coupling structure 82 is used to couple with an exterior member (e.g., a vehicle body of a roof of an automobile or a sunroof driving mechanism, not shown) so that the base plate 10 can be coupled to the exterior member through the coupling structure 82. The coupling structure 82 is made of a hard plastic material or a metal material. In the first embodiment of the present invention shown in fig. 2, the combination structure 82 is made of metal material such as iron, stainless steel or aluminum alloy by casting, forging or stamping. The bonding structure 82 is adhered and fixed to the outer peripheral edge region of the inner surface of the substrate 10 at a position having the easy adhesion layer 81 by using the easy adhesion layer 81 as an adhesive.

In other embodiments of the light guide skylight assembly of the present invention described below, most of the components and functions are the same or similar to those of the first embodiment described above. Therefore, the same or similar elements will be directly given the same element names and numbers, and the details thereof will not be repeated.

Please refer to fig. 3, which is a schematic cross-sectional view of a light guide skylight assembly according to a second embodiment of the present invention. In a second embodiment of the present invention, the light guide louver assembly also includes: a substrate 10, at least one light source module 30, an easy adhesion layer 81 and a bonding structure 82. The light guide skylight assembly of the second embodiment of the present invention is different from the first embodiment in that, in the second embodiment of the light guide skylight assembly of the present invention shown in fig. 3, the substrate 10 is a multi-layer structure formed by co-extrusion (coextrusion) of at least three different plastic materials, and includes: an engineering plastic layer 11 in the middle, an upper polymethyl methacrylate layer 12 above the engineering plastic layer 11, and a lower polymethyl methacrylate layer 13 below the engineering plastic layer 11. An upper hard layer 14 is formed above the upper polymethyl methacrylate layer 12, and a lower hard layer 15 is also formed below the lower polymethyl methacrylate layer 13. The engineering plastic layer 11 and the lower polymethyl methacrylate layer 13 are transparent and colorless or transparent and white, and the transmittance is greater than 90%, and black, red, blue, green or other relatively dark coloring agents are added in the upper polymethyl methacrylate layer 12, so that the upper polymethyl methacrylate layer 12 has a color and the transmittance is between 5% and 70%, thereby forming a dark background above the transparent engineering plastic layer 11.

As to the other components of the light guide skylight assembly of the second embodiment, such as but not limited to: the light source module 30, the easy adhesion layer 81, the bonding structure 82, and the like are substantially the same as or similar to those described in the first embodiment, and therefore, the description thereof is omitted.

Fig. 4 is a schematic cross-sectional view of a light guide skylight assembly according to a third embodiment of the present invention. In a third embodiment of the present invention, the light guide louver assembly also includes: a substrate 10, at least one light source module 30, an easy adhesion layer 81 and a bonding structure 82. The substrate 10 is a multi-layer structure comprising two layers of different plastics, comprising: an engineering plastic layer 11 located below, and an upper polymethyl methacrylate layer 12 located above the engineering plastic layer 11. The engineering plastic layer 11 is transparent colorless or transparent white with a transmittance of more than 90%, and the upper polymethyl methacrylate layer 12 is added with black, red, blue, green or other relatively dark coloring agents, so that the upper polymethyl methacrylate layer 12 has a color with a transmittance of 5% to 20%, thereby forming a dark background above the transparent engineering plastic layer 11. An upper hard layer 14 is formed above the upper polymethylmethacrylate layer 12 and a lower hard layer 15 is also formed below the substrate 10. The difference between the light guide skylight assembly of the third embodiment of the present invention and the first embodiment of the present invention is that, in the third embodiment of the light guide skylight assembly of the present invention shown in fig. 4, the light guide skylight assembly further includes a plurality of light guide microstructures 141 disposed on at least one of the two positions of the outer surface or the inner surface of the substrate 10. In the third embodiment shown in fig. 4, the plurality of light guiding microstructures 141 are disposed on the upper surface of the upper polymethyl methacrylate layer 12, or on the lower surface of the upper hard layer 14, or between the upper polymethyl methacrylate layer 12 and the upper hard layer 14. The plurality of light guide microstructures 141 can guide the light traveling along the horizontal direction of the engineering plastic layer 11 from the plurality of light guide microstructures 141 to exit toward the lower portion of the inner surface of the substrate 10. The plurality of light guiding microstructures 141 are arranged in a predetermined pattern, so that when the at least one light source module 30 emits light, only the light at the position of the plurality of light guiding microstructures 141 is emitted from the lower portion of the inner surface of the substrate 10, and thus the predetermined pattern of light emission formed by the arrangement of the plurality of light guiding microstructures 141 can be displayed on the inner surface of the substrate 10, thereby achieving the visual effect of light decoration.

Please refer to fig. 5A and 5B, which are a schematic cross-sectional view and a schematic top view of a light guide skylight assembly according to a fourth embodiment of the present invention. In a fourth embodiment of the present invention, the light guide louver assembly also includes: a substrate 10, at least one light source module 30, an easy adhesion layer 81 and a bonding structure 82. The substrate 10 is a multi-layer structure comprising at least three layers of different plastics, comprising: the engineering plastic layer 11, the upper polymethyl methacrylate layer 12 located above the engineering plastic layer 11, and the lower polymethyl methacrylate layer 13 located below the engineering plastic layer 11. The engineering plastic layer 11 and the lower polymethyl methacrylate layer 13 are transparent and colorless or transparent and white, and the transmittance is greater than 90%, and black, red, blue, green or other relatively dark coloring agents are added in the upper polymethyl methacrylate layer 12, so that the upper polymethyl methacrylate layer 12 has a color and the transmittance is between 5% and 20%, thereby forming a dark background above the transparent engineering plastic layer 11. An upper hard layer 14 is formed above the upper polymethyl methacrylate layer 12, and a lower hard layer 15 is also formed below the lower polymethyl methacrylate layer 13. The difference between the light guide skylight assembly of the fourth embodiment of the present invention and the light guide skylight assembly of the first embodiment of the present invention is that, in the fourth embodiment of the light guide skylight assembly of the present invention shown in fig. 5A and 5B, the light guide skylight assembly further includes a plurality of light guide microstructures 141 disposed on the upper surface of the upper polymethyl methacrylate layer 12, or on the lower surface of the upper hard layer 14, or between the upper polymethyl methacrylate layer 12 and the upper hard layer 14. The plurality of light guide microstructures 141 can guide the light traveling along the horizontal direction of the engineering plastic layer 11 from the plurality of light guide microstructures 141 to exit toward the lower portion of the inner surface of the substrate 10. The light guide microstructures 141 are arranged in a predetermined pattern, so that when the at least one light source module 30 emits light, only the light at the position of the light guide microstructures 141 is emitted from the bottom of the inner surface of the substrate 10, and the predetermined pattern of light emission formed by the arrangement of the light guide microstructures 141 can be displayed in the light emitting region 100 of the inner surface of the substrate 10, thereby achieving the visual effect of light decoration.

Fig. 6 is a schematic cross-sectional view of a light guide skylight assembly according to a fifth embodiment of the present invention. In a fifth embodiment of the present invention, the light guide louver assembly also includes: a substrate 10, at least one light source module 30, an easy adhesion layer 81 and a bonding structure 82. The substrate 10 is a multilayer structure comprising at least two layers of different plastics, comprising: an engineering plastic layer 11 located below, and an upper polymethyl methacrylate layer 12 located above the engineering plastic layer 11. The engineering plastic layer 11 is transparent colorless or transparent white with a transmittance of more than 90%, and the upper polymethyl methacrylate layer 12 is added with black, red, blue, green or other relatively dark coloring agents, so that the upper polymethyl methacrylate layer 12 has a color with a transmittance of 5% to 20%, thereby forming a dark background above the transparent engineering plastic layer 11. An upper hard layer 14 is formed above the upper polymethylmethacrylate layer 12 and a lower hard layer 15 is also formed below the substrate 10. The difference between the light guide skylight assembly of the fifth embodiment of the present invention and the light guide skylight assembly of the first embodiment of the present invention is that, in the fifth embodiment of the light guide skylight assembly of the present invention shown in fig. 6, the light guide skylight assembly further includes a plurality of light guide microstructures 151 disposed on the lower surface of the engineering plastic layer 11, or on the upper surface of the lower hard layer 15, or between the engineering plastic layer 11 and the lower hard layer 15. The plurality of light guide microstructures 151 can guide the light traveling along the horizontal direction of the engineering plastic layer 11 to be emitted from the plurality of light guide microstructures 151 toward the lower portion of the inner surface of the substrate 10, so as to achieve the visual effect of light decoration.

Fig. 7 is a schematic cross-sectional view of a light guide skylight assembly according to a sixth embodiment of the present invention. In a sixth embodiment of the present invention, the light guide louver assembly also includes: a substrate 10, at least one light source module 30, an easy adhesion layer 81 and a bonding structure 82. The substrate 10 is a multi-layer structure comprising at least three layers of different plastics, comprising: the engineering plastic layer 11, the upper polymethyl methacrylate layer 12 located above the engineering plastic layer 11, and the lower polymethyl methacrylate layer 13 located below the engineering plastic layer 11. The engineering plastic layer 11 and the lower polymethyl methacrylate layer 13 are transparent and colorless or transparent and white, and the transmittance is greater than 90%, and the upper polymethyl methacrylate layer 12 has a color and a transmittance of 5% to 20%, so as to form a dark background above the transparent engineering plastic layer 11. An upper hard layer 14 is formed above the upper polymethyl methacrylate layer 12, and a lower hard layer 15 is formed below the lower polymethyl methacrylate layer 13. In the sixth embodiment shown in fig. 7, the light guide skylight assembly further includes a plurality of light guide microstructures 151 disposed on the lower surface of the lower polymethyl methacrylate layer 13, or on the upper surface of the lower hard layer 15, or between the lower polymethyl methacrylate layer 13 and the lower hard layer 15. The plurality of light guide microstructures 151 can guide the light traveling along the horizontal direction of the engineering plastic layer 11 to be emitted from the plurality of light guide microstructures 151 toward the lower portion of the inner surface of the substrate 10, so as to achieve the visual effect of light decoration.

In one embodiment, the recesses of the light guide microstructures 141 and 151 may be filled with fluorescent powder to increase the brightness of the predetermined pattern of light emitted by the light guide microstructures 141 and 151.

In the present invention, the light guide microstructures 141 and 151 are fabricated on the surface of the substrate by physical processing methods such as laser or Computer Numerical Control (CNC) machine tool, and the like, and the fabricated positions of the light guide microstructures can be engineering plastic layers or polymer material surfaces of upper and lower polymethyl methacrylate layers, or can also be fabricated on the surface of a hard layer (HC). When the light guide microstructure is fabricated on the surface of a polymer material (such as an engineering plastic layer or an upper and a lower polymethyl methacrylate layers), it is necessary to consider that the thickness of the subsequent hard layer is not higher than the depth of the light guide microstructure. If the light guide microstructure is fabricated on the surface of the hard layer, the depth of the light guide microstructure to be processed after the light guide microstructure is fabricated is not too deep as the thickness of the hard layer. The specific shape or structure of the light guide microstructure itself can be selected from the prior art and is not a feature of the present invention, and thus is not described in detail.

FIG. 8 is a schematic view of an embodiment of the predetermined pattern of light emission formed by the plurality of light guiding microstructures in the light guiding skylight assembly of the present invention. In the embodiment, the predetermined pattern formed by arranging the plurality of light guiding microstructures is a night sky pattern similar to a starlight and a silver river, in other words, when the light source module 30 emits light, the light guiding effect of each light guiding microstructure forms a light spot 101 similar to a starlight ray below the inner surface of the substrate, so the starlight spot 101 provided by the plurality of light guiding microstructures can provide a light decorative visual feeling similar to a starlight and a silver river in the night sky.

FIG. 9 is a schematic view of another embodiment of the predetermined pattern of light emission formed by the plurality of light guiding microstructures in the light guiding skylight assembly of the present invention. In the present embodiment, the predetermined pattern formed by arranging the plurality of light guiding microstructures represents a specific pattern or a specific character. When the light source module 30 emits light, the light guiding effect of each light guiding microstructure forms a specific pattern or text arranged by a plurality of light spots 101 under the inner surface of the substrate, and the pattern or text can be designed by a customer or a car manufacturer to provide unique light decoration visual perception.

In another embodiment, the predetermined pattern formed by the plurality of light guiding microstructures may also be a dense and regularly arranged array pattern, so that the light emitted from the light source module 30 can be emitted to the lower portion of the inner surface of the substrate regularly and in a large amount, thereby providing a light illumination effect similar to a roof light.

In another embodiment, as shown in fig. 8 and 9, the predetermined pattern of light emission is formed by arranging a plurality of light guide microstructures, wherein the plurality of light guide microstructures are formed by "carving" the predetermined pattern in a planar or three-dimensional manner in the middle of an inner layer of the substrate 10 instead of being formed on the upper surface or the lower surface of the substrate 10 by two-dimensional (2D) or three-dimensional (3D) Laser Engraving. The light traveling along the engineering plastic layer in the horizontal direction can be guided to the light guide microstructures formed by laser engraving to be emitted toward the lower side of the substrate 10, and then a specific pattern or character formed by arranging a plurality of light spots 101 or a light ray similar to stars can be emitted from the lower surface of the substrate 10.

Please refer to fig. 10, which is a schematic cross-sectional view illustrating a light guiding skylight assembly according to a seventh embodiment of the present invention. In the seventh embodiment, the substrate is a light-guiding skylight assembly with a curved light-permeable plastic plate, and the structure of the light-guiding skylight assembly is similar to that of the first embodiment, and also includes a substrate 10, at least one light source module 30, an easy-to-adhere layer 81 and a combining structure 82; moreover, the substrate 10 also includes: an engineering plastic layer 11, upper and lower polymethyl methacrylate layers 12, 13, and upper and lower hard layers 14, 15. Since the substrate 10 of the present embodiment is made of hard plastic material with curved surface shape, and the connecting structure 82 is also made of hard metal material; when the curvature of the joint surface is not matched (curvature tolerance), the sealing performance between the two is poor, and the problem of water leakage is caused. Therefore, in the seventh embodiment of the present invention shown in fig. 10, one or more local high temperature resistant Sealing Ring layers 83(Sealing Ring Layer) are formed on the easy adhesion Layer 81 by dispensing, so as to effectively fill the gap between the two hard materials and avoid the risk of water leakage of the composite skylight assembly due to curvature tolerance (curvature mismatch). In the embodiment, the sealing ring layer 83 is disposed on the surface of the easy adhesion layer 81 facing the bonding structure 82, and the sealing ring layer 83 is sandwiched between the contact surfaces of the easy adhesion layer 81 and the bonding structure 82. Before the bonding structure 82 is bonded to the easy-bonding layer 81, the sealing layer 83 is formed by dispensing one or more sealing layers 83 around the outer peripheral region on the surface of the easy-bonding layer 81 facing the bonding structure 82, and then the bonding structure 82 is bonded to the easy-bonding layer 81 and the sealing layer 83 is pressed. The material of the seal ring layer 83 is one of the following materials: silicone and Polyurethane (PU) can fill up gaps between hard materials due to curvature tolerance, so as to improve the sealing property between the substrate 10 and the bonding structure 82, thereby facilitating passing of a water leakage test.

It should be noted that, in the seventh embodiment of the light guiding skylight assembly of the present invention shown in fig. 10, the engineering plastic layer 11 or the upper and lower polymethyl methacrylate layers 12 and 13 are also provided with a plurality of light guiding microstructures for guiding light to the lower surface of the substrate, but the plurality of light guiding microstructures are not shown in fig. 10 for the sake of simplicity.

Besides the above-mentioned combination structure can be made of metal material, the present invention further provides a technique for directly forming and fixing the combination structure on the plastic plate by using the insert-injection process, which can replace the conventional design of the sunroof mechanism assembly using glass to bond iron.

Please refer to fig. 11, which is a schematic cross-sectional view illustrating an eighth embodiment of a light guide skylight assembly according to the present invention. In the eighth embodiment, the light guide skylight assembly is similar to the seventh embodiment, and also includes a substrate 10, an easy adhesion layer 81, a bonding structure 82a and at least one sealing ring layer 83; moreover, the substrate 10 also includes: an engineering plastic layer 11, upper and lower polymethyl methacrylate layers 12, 13, and upper and lower hard layers 14, 15. The eighth embodiment is different from the previous embodiments in that the coupling structure 82a is made of a hard plastic material, is formed and fixed in the outer peripheral edge region of the inner surface of the substrate 10 by insert injection, and has a thickness of 1mm to 50mm at a position having the easy adhesion layer 81. Moreover, the rigid plastic material of the combining structure 82a is one of the following materials: polymethyl methacrylate (abbreviated to PMMA), Polycarbonate (abbreviated to PC), Acrylonitrile-Butadiene-Styrene copolymer (abbreviated to ABS), polymetaphenylimide (abbreviated to PMMI), Polyethylene terephthalate (abbreviated to PET), Polyethylene naphthalate (abbreviated to PEN), polyether sulfone (abbreviated to PES), and Polyimide (abbreviated to PI). In addition, in the eighth embodiment shown in fig. 11, a coating layer 20 with a multi-layer film structure is further disposed on at least the upper hard layer 14 of the substrate 10, and the coating layer 20 can provide the surface of the substrate 10 with ultraviolet resistance and wear resistance, so as to improve the defects that the surface hardness and wear resistance of the substrate 10 itself are not good and the substrate is easily yellowed or deteriorated by long-term irradiation of heat energy or ultraviolet. The coating 20 will be described in more detail in the following embodiments.

It should be noted that, in the eighth embodiment of the light guiding skylight assembly of the present invention shown in fig. 11, the engineering plastic layer 11 or the upper and lower polymethyl methacrylate layers 12 and 13 are also provided with a plurality of light guiding microstructures for guiding light to the lower surface of the substrate, which is not shown in fig. 11.

The invention provides a solution for a light-weight polymer skylight material, which comprises the light-weight polymer skylight material and a light-weight plastic embedded and ejected piece mechanism assembly, can replace the traditional automotive glass combined iron piece or stainless steel piece to be used as an automotive skylight mechanism assembly, and is particularly suitable for being applied to oil-electricity hybrid electric vehicles and all-electric vehicles which need light-weight specifications. The lightweight polymer skylight material of the invention comprises a Primer layer and a Sealing layer between the lightweight polymer skylight material and a lightweight plastic injection piece, and is particularly suitable for a process of combining more than two heterogeneous and hard plastics in an embedding and injection mode, so the lightweight polymer skylight material has the following advantages:

1. the weight of the traditional glass skylight, the front windshield, the rear windshield and the side window mechanism assembly can be reduced, and the advantages of light weight (reduced oil consumption or electric energy consumption) and safety without breakage are simultaneously achieved. The invention uses the base plate made of PMMA/PC/PMMA or PMMA/PC composite material, combines with the composite material skylight made by the wet coating and sputtering (Sputter) coating process, the surface hardness can be improved to more than 4H (4H-9H), the abrasion resistance can pass the L-level abrasion level of Taber Test, and the UV yellowing resistance Test (5000 hours) can maintain the specification of delta E < 1. The combined structure machine member is manufactured by directly placing the composite material skylight into an injection machine and embedding and injecting the polymer. The weight of glass instead of a polymer PC material substrate can be saved, and the weight of an iron piece or a stainless steel piece instead of a polymer bonding structure can be saved, so that the effect of reducing the overall weight to 1/2-1/3 of the weight of the original glass and metal piece can be achieved.

2. Through the formulation of the high polymer material, the design of the coating formulation and the precise coating technology, the wear-resisting property of the surface of the high polymer can be improved to the same level as that of glass (the Taber Test can reach the L level in the wear-resisting Test), and the original optical and physical properties can be maintained after various weather resistance tests are carried out. The conventional polymer material (bonding structure) for insert injection and the injection bonding surface (Hard Coating of substrate) cannot be bonded effectively due to the material difference, or have the risk of falling off and peeling after ring test. The invention uses a high temperature resistant Amine, Silane or PU material easy-to-adhere layer as the bonding medium between the substrate hard layer and the bonding structure ejection member, so that the ejection bonding surface hard layer has high surface dyne value (>44dyne), which is beneficial to the bonding of the bonding structure ejection member, and the problems of falling off and peeling off after ring test between the composite skylight and the polymer ejection member can be avoided by the harsh high temperature, high humidity, high and low temperature impact ring test.

3. The plate is designed by a process of hot pressing and embedding and injecting, and can replace the original mechanism design of glass bonding iron parts. The high polymer material embedded and injected conventionally must reach a high temperature of more than 250 ℃ in the injection screw during the injection process, and is injected on the hard layer of the bonding surface of the composite material skylight, so that the composite material skylight must endure the high temperature of the instant injection process. Moreover, since the composite skylight substrate is made of a hard plastic material with a curved surface shape and the polymer injection member combination structure is also made of a hard plastic material, when the injection combination curvatures of the two are not matched (curvature tolerance), the sealing performance of the two is poor, and the problem of water leakage is caused. The invention can manufacture one or more circles of local high-temperature-resistant Sealing Ring layers (Sealing Ring layers) on the easy-to-adhere Layer in a dispensing way, and can effectively fill the gap between two hard plastics by combining with an injection process, thereby avoiding the water leakage risk of the composite skylight assembly caused by curvature tolerance (curvature mismatching).

Referring to fig. 12A, a first embodiment of a coating layer disposed on a substrate according to the invention is shown in fig. 11. The substrate 10 shown in fig. 12A is the same as the embodiment shown in fig. 11, and includes: an engineering plastic layer 11, upper and lower polymethyl methacrylate layers 12, 13, upper and lower hard layers 14, 15, and a coating layer 20 on the upper hard layer 14. In the present invention, the coating layer 20 comprises a multifunctional optical inorganic material, which can provide anti-ultraviolet, anti-infrared and surface wear-resistant functions, and can reach L-level water through a wear-resistant testThe method is accurate. Wherein the multifunctional inorganic material may comprise SiO₂、Ti₃O₅、Nb₂O₅…, etc., and a low refractive index, high refractive index material. As shown in fig. 12A, the first embodiment of the coating layer 20 sequentially includes, from bottom to top: an adhesion layer 21, an ultraviolet (UV-Cut) resistant layer 22, and an abrasion resistant layer 23. In the present embodiment, the coating layers 20 of the multilayer film structure may be sequentially formed on the outer surface of the substrate 10 (i.e., the outer surface of the upper hard layer 14) by a Plasma-Enhanced CVD (PECVD) or a vacuum sputtering (Sputter) coating process. The material of the adhesion layer 21 may include silicon dioxide (SiO)₂) The material of the anti-ultraviolet layer 22 may be titanium oxide (Ti) containing a UV absorber₃O₅) And the material of the wear-resistant layer 23 may include silicon dioxide (SiO)₂)。

Fig. 12B is a schematic view of a coating layer disposed on a substrate according to a second embodiment of the invention. In fig. 12B, a second embodiment of the coating layer 20a is based on the following from bottom to top: a first adhesive layer 21, an ultraviolet-resistant layer 22, a second adhesive layer 23, an infrared-resistant (IR Cut) layer 24, and an abrasion-resistant layer 25. The first and second adhesion layers 21, 23 may be made of silicon dioxide (SiO)₂) The material of the anti-UV layer 22 and the anti-IR layer 24 may be titanium oxide (Ti) containing UV absorber and IR absorber, respectively₃O₅) Or niobium pentoxide (Nb)₂O₅) And the material of the wear-resistant layer 25 may include silicon dioxide (SiO)₂). By disposing the anti-UV and anti-IR functions on the outer surface of the substrate 10, the UV blocking and IR blocking effects are provided, and the substrate itself is not yellowed and does not accumulate heat energy, and thus the substrate itself is optically transparent.

Fig. 12C is a schematic view of a third embodiment of a coating layer disposed on a substrate according to the present invention. In fig. 12C, the structure of the coating layer 20, 20a may be the same as the embodiment shown in fig. 12A or fig. 12B, however, a top hard layer 26 may be further added above the wear-resistant layer of the coating layer 20, 20a to increase the hardness and wear-resistant capability of the upper surface of the coating layer 20, 20a, and the surface is more resistant to strong acid and strong alkali.

Please refer to fig. 13A-13C, which are schematic diagrams illustrating a breakable structure disposed on a substrate according to three embodiments of the present invention. In the present invention, the material of the substrate 10 can be weakened by mechanical or laser at a predetermined position (usually a corner) of the substrate 10, so that the substrate 10 forms a structure that is easily broken at the predetermined position after the weakening process. In case of an emergency, the user can operate a tool (e.g., a hammer) to strike the breakable structure and break the substrate 10 from the breakable structure, thereby facilitating the escape of the user through the broken substrate 10 (skylight). As shown in fig. 13A, the dense distribution 411 is formed on the partial area 41 of the substrate 10 by mechanical or laser processing, and small cracks (cracks) of the material are formed at the dense distribution 411, so that the structure at the dense distribution is weakened and is easily broken to form the breakable structure. As shown in fig. 13B, an annular dashed line structure 42 is formed on a partial region of the internal material of the substrate 10 by energy irradiation (e.g., high-energy laser irradiation) or interface of different materials, so that the structure at the annular dashed line structure 42 is weakened and is easily broken to form the breakable structure. As shown in fig. 13C, a plurality of vertical dotted structures 431 and horizontal dotted structures 432 are formed inside the material of the substrate 10 by energy irradiation, so that the structures at the dotted structures 431 and 432 are weakened and easily broken to form the breakable structure. In one embodiment, the breakable structure also has the function of guiding the light traveling in the horizontal direction inside the substrate 10 from the breakable structure to be emitted toward the lower side of the substrate 10, so that the user can identify the position of the breakable structure.

An embodiment of the method for manufacturing a light guide skylight assembly of the present invention can include the following steps:

step A: providing a substrate, wherein the substrate at least comprises a plastic material with a multilayer structure; in this embodiment, the substrate may be the substrate with a coating layer as shown in fig. 11, and the specific structure of the substrate and the coating layer may be selected from any one of the substrates and the coating layers shown in fig. 11 and fig. 12A to 12C;

and B: preheating the substrate, namely heating the substrate to a first preset temperature through a preheating program;

and C: cooling and molding the substrate by a mold; cooling the substrate to a second predetermined temperature state by a die pressing process and a cooling process, and simultaneously pressing and molding the substrate by a mold; and the number of the first and second groups,

step D: processing the substrate by a processing machine; and cutting the shape of the substrate after the pressure forming through a processing procedure to manufacture a plastic plate with a preset shape outline.

Step E: applying an easy-adhesion layer on an outer peripheral region of the surface of the plastic plate by a coating process.

Step F: arranging at least one sealing ring layer on the easy-to-adhere layer by a glue dispensing procedure; the sealing ring layer is locally arranged on the surface of the side, facing the combination structure, of the easy-to-adhere layer, and the sealing ring layer is clamped between the contact surfaces of the easy-to-adhere layer and the combination structure.

Step G: forming and fixing a combination structure in the outer peripheral area of the plastic plate and at the position with the easy-to-adhere layer by an insert injection process;

step H: at least one light source module is embedded into an inner concave space arranged on the side surface of the engineering plastic layer of the substrate. Through the above steps a-H, the light guide skylight assembly having a curved surface and having a light source module and a bonding structure as shown in fig. 11 can be completed.

The above-described embodiments should not be construed as limiting the scope of the invention, which is defined by the appended claims and their equivalents. Rather, all equivalent changes and modifications as fall within the true spirit and scope of the invention are intended to be suggested by the following claims.