CN115366783A

CN115366783A - Light guide panel assembly, light emitting glass system and vehicle

Info

Publication number: CN115366783A
Application number: CN202111274037.XA
Authority: CN
Inventors: 赵莉; 赵晓宇; 谈君; 马俊
Original assignee: Saint Gobain Glass France SAS
Current assignee: Saint Gobain Glass France SAS
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-11-22
Also published as: WO2023071945A1

Abstract

A light guide panel assembly and a luminescent glass system are provided. The light guide panel assembly includes a light guide layer including oppositely disposed bottom and top surfaces and configured to receive laterally incident light rays and cause the light rays to propagate laterally inside the light guide layer and escape in an escape region of the light guide layer; and a first reflective layer disposed at least at a non-total reflection region of at least one of the bottom surface and the top surface adjacent to where the light is incident, to reflect the light to prevent the light from escaping the light guide layer from the non-total reflection region. In this way, the intensity of the light escaping the light guide panel assembly at the escape area may be increased, thereby improving the user experience.

Description

Light guide panel assembly, light emitting glass system and vehicle

Technical Field

Embodiments of the present disclosure relate to a luminescent glass system, and more particularly, to a light guide panel assembly for a luminescent glass system.

Background

The atmosphere lamp plays a decorative role, and is generally used for setting off the atmosphere and creating effects. LEDs are typically used as the atmosphere lamp. The LEDs can be configured with different colors and patterns as desired to create the desired effect. Currently, some high-end automobiles also commonly use LED atmosphere lamps, for example, in the positions of the steering wheel, center control, foot lamp, cup holder, roof, welcome lamp, welcome pedal, door, trunk, lamp, etc. of the automobile. Good atmosphere lamp can give people a kind of warm and comfortable sensation, also can give people a kind of science and technology, luxurious aesthetic feeling simultaneously.

Due to the very soft texture, the LED strip can be installed irregularly and hidden at many places as mentioned above. However, LED strips are not suitable for use in the glass of a vehicle.

At present, vehicle glass, especially skylight, forms luminous effect through the leaded light of glass layer. Such an approach is less effective. Since vehicle glass is generally a laminated glass composed of a plurality of glass sheets, the edges between the respective laminated glass sheets are generally provided with ink layers. The ink layer is generally black and absorbs light transmitted in the glass, so that the illumination or pattern provided by the luminescent glass system cannot reach a predetermined brightness, and thus the user experience is affected.

Disclosure of Invention

The object of the present invention is to improve the existing luminescent glass to improve the luminescent brightness.

In a first aspect of the present disclosure, a light guide panel assembly is provided. The light guide panel assembly includes: a light guiding layer comprising opposing bottom and top surfaces and configured to receive light rays incident from at least one side of the light guiding layer and to cause the light rays to propagate laterally inside the light guiding layer and escape in escape regions of the bottom and/or top surfaces; and a first reflective layer disposed at least at a non-total reflection region adjacent to the side surface on at least one of the bottom surface and the top surface and configured to reflect the light ray to prevent the light ray from escaping the light guide layer from the non-total reflection region.

By arranging the reflecting layer, light can only escape from a required escape region and is prevented from escaping from other regions except a non-escape region, so that the light intensity at the escape region can be effectively enhanced, and the user experience is improved.

In some embodiments, the light guiding layer is at least one of a plurality of stacked transparent plates.

In some embodiments, the light guide panel assembly further comprises: a second reflective layer disposed on at least a portion of at least one non-light receiving side of the light guiding layer.

In some embodiments, the first reflective layer or the second reflective layer comprises at least one of a silver layer, an aluminum layer, and a white ink layer.

In some embodiments, the light guide panel assembly further comprises an ink layer formed at an edge region of the top and/or bottom surface of the light guide layer.

In some embodiments, the first reflective layer is disposed between the ink layer and the light guiding layer.

In a second aspect of the present disclosure, a light guide panel assembly is provided. The light guide panel assembly includes: a light guiding layer comprising opposing bottom and top surfaces, further comprising a through-hole, wherein the light guiding layer is configured to receive light rays incident from an inner side surface of the through-hole and to cause the light rays to propagate laterally inside the light guiding layer and escape in escape regions of the bottom and/or top surfaces; and a third reflective layer disposed at least at a non-total reflection region adjacent to the through hole on at least one of the bottom surface and the top surface.

In some embodiments, the light guiding panel assembly further comprises a second reflective layer arranged at least at a portion of at least one side of said light guiding layer.

In some embodiments, the second reflective layer or the third reflective layer comprises at least one of a silver layer, an aluminum layer, and a white ink layer.

In a third aspect of the present disclosure, a luminescent glass system is provided comprising a signed light guide panel assembly and a light source, wherein the light source is arranged proximate to at least one side of the light guide layer.

In a fourth aspect of the present disclosure, a luminescent glass system is provided. The luminescent glass system comprises the light guide panel assembly mentioned in the foregoing and a light source. Wherein the light guiding layer has a through hole and a light source is arranged within the through hole.

In a fifth aspect of the present disclosure, a glass panel for a vehicle is provided. The glass panel comprises either of the two luminescent glass systems described hereinbefore, wherein the light guiding layer of the light guiding panel assembly is configured to be located at the innermost layer.

It should be understood that this summary is not intended to identify key or essential features of the embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the present disclosure will become readily apparent from the following description.

Optionally, the lighting mode has the advantages of large light source area and soft light, and does not additionally occupy the limited space in the vehicle, so that the interior of the vehicle can be more concise. In addition, this kind of lighting methods can cooperate with other atmosphere lamps inside the vehicle to build more diversified atmosphere in the car, come from this improvement user experience.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts in exemplary embodiments of the present disclosure.

Fig. 1 shows a simplified top view schematic of a light guide panel assembly in a conventional solution;

fig. 2 shows a simplified schematic side view of a light guide panel assembly in a conventional solution;

fig. 3A and 3B show simplified side view schematics of a light guiding layer in a light guiding panel assembly in a conventional solution;

fig. 4-7 show simplified side-view schematics using a light guide panel assembly according to various embodiments of the present disclosure; and

fig. 8 shows a simplified top view schematic using a light guiding panel assembly according to an embodiment of the present disclosure.

The same or similar reference numbers will be used throughout the drawings to refer to the same or like elements.

Detailed Description

The present disclosure will now be described with reference to several example embodiments. It should be understood that these examples are described only for the purpose of enabling those skilled in the art to better understand and thereby enable the present disclosure, and are not intended to set forth any limitations on the scope of the technical solutions of the present disclosure.

As used herein, the term "include" and its variants are to be read as open-ended terms meaning "including, but not limited to. The term "based on" will be read as "based at least in part on". The terms "one embodiment" and "an embodiment" should be understood as "at least one embodiment". The term "another embodiment" should be understood as "at least one other embodiment". Other explicit and implicit definitions may be included below. The term "transverse" is a direction generally aligned with the plane of the panel and, in the context of this disclosure, may be either in line with the horizontal direction of the page or perpendicular to the page. The definitions of the terms are consistent throughout the specification unless the context clearly dictates otherwise.

Fig. 1 shows a typical light guide panel assembly 100 for providing illumination and pattern display. Light guide panel assembly 100 may be a transparent material that may include a plurality of stacked transparent panels. The transparent plate may be made of any suitable transparent or translucent material such as glass, polycarbonate (PC) or Polymethylmethacrylate (PMMA), etc., in the following the inventive concept of the present disclosure will be described mainly with glass, in particular vehicle glass, as an example of a light guiding panel assembly 100. It should be understood that other scenarios are similar and will not be described separately below.

Further, fig. 2 shows a cross-sectional view of the light guiding panel assembly 100 of fig. 1, the isle panel assembly 100 comprising three laminated glass layers, wherein the light guiding layer 101 is one of the three laminated glass sheets. The light guiding layer 101 is plate-shaped and has a thickness, whereby the light guiding layer 101 has opposite bottom 1011 and top 1012 surfaces and has a plurality of side surfaces, see fig. 3

The scenario illustrated in fig. 2 is merely illustrative and is not intended to limit the scope of the present disclosure. And similarly in any other suitable case. For example, the light guide panel assembly 100 may also include more laminated glass sheets, and one or more of the glass sheets may serve as the light guide layer 101. Hereinafter, the inventive concept of the present disclosure will be described mainly by taking the case shown in fig. 2 as an example, and it should be understood that other cases are also similar and will not be described separately below.

In the example shown in fig. 1-2, the light source 201 is arranged close to one side of the light guiding layer 101, for example a plurality of LED light sources 201 arranged along one side of the light guiding layer 101 as shown in fig. 1. Fig. 3A shows the propagation of light entering the light guiding layer 101 from the side of the light guiding layer 101.

In a further example, the light guiding layer 101 has a through hole 1013, see fig. 1 and 2. In this case, the light source 201 may be arranged in one or more through holes 1013 of the light guiding layer 101. In this case, light emitted from the light source enters the light guiding layer 101 from the inner side 1014 of the through hole 1013 and propagates laterally inside the light guiding layer 101, as shown in fig. 3B.

Furthermore, it should also be understood that the above embodiments of providing incident light with respect to an LED light source are merely illustrative and are not intended to limit the scope of the present disclosure. Any other suitable light source is also possible. For example, in some alternative embodiments, the light source may also be an Organic Light Emitting Diode (OLED) light source.

Fig. 1 and 2 only schematically show embodiments in which one face is incident on the inside of the light guiding layer 101. In some alternative embodiments, light may also be incident inside the light guiding layer from multiple sides of the light guiding layer 101. The inventive concept of the present disclosure will be described hereinafter primarily in terms of the embodiments shown in fig. 1 and 2. It should be understood that other scenarios are similar and will not be described separately below.

In other embodiments, light guide panel assembly 100 may have only the light guide layer of a transparent material.

Referring to fig. 1 and 2, when applied to an automobile as an automobile glass, the light guide panel assembly 100 is generally fixed to a vehicle body requiring a Polyurethane (PU) sealant and a bead of sealant. The sealing adhesive and the sealing joint strip are generally sensitive to light such as ultraviolet light and are prone to failure under long-term irradiation of sunlight and the like. To prevent the sealant and bead from failing, an ink layer 105 is typically provided at the area of the edge of light guide panel assembly 100 where the sealant is typically provided, as shown in fig. 1 and 2. Ink layer 105 is typically darker in color, such as typically black or dark gray, and is effective in blocking the degrading effects of light on the sealant and bead. For the three-layer glass panel shown in fig. 2, the ink layer 105 is typically disposed at the ink areas of the lower surface of the first layer of glass panel, the lower surface of the second layer of glass panel, and the lower surface of the third layer of glass panel (i.e., the light guiding layer 101) from top to bottom in the figure. Besides the function of preventing the sealant from failing, the ink layer 105 also has the function of increasing the adhesion between the PU sealant and the vehicle body.

Fig. 3A shows a schematic diagram of lateral propagation in the light guiding layer 101 in the case of light rays incident from the side of the light guiding layer 101; fig. 3B shows a schematic diagram of lateral propagation in the light guiding layer 101 in the case where light is incident from the inner side surface 1014 of the through-hole 1013. In the case where the light source is arranged at the side edge of the light guide layer 101, if the light source is arranged at a partial length of the incident edge, the light travels laterally within a substantially fan-shaped region as viewed in plan view, subject to factors such as the incident angle of the light.

Light entering the photoconductive layer 101 at a predetermined incident angle in the transverse direction will propagate inside the photoconductive layer 101. In some areas, a portion of the light is reflected back into light guiding layer 101 at bottom surface 1011 and top surface 1012, while another portion is refracted into the medium, such as air, adjacent to light guiding layer 101. In other regions, light will be totally reflected back into the interior of the photoconductive layer 101 from the bottom surface 1011 and the top surface 1012. Total reflection is a phenomenon in which when light is transmitted from an optically dense medium (e.g., the light guide layer 101) to an optically thinner medium (e.g., air or an intermediate layer between glass plates), the refracted light disappears completely when the incident angle exceeds a critical angle, and only the reflected light remains, and is called total reflection. The critical angle at which total reflection occurs differs depending on the medium adjacent to the light guide layer 101. For example, for ordinary glass, the critical angle for total reflection of light is about 41.47 ° for the surface of light guiding layer 101 adjacent to air, and about 75.56 ° for the surface of light guiding layer 101 adjacent to an intermediate layer. Of course, it should be understood that the above-mentioned angle related to the critical angle is only an example, and the critical angle may be different between adjacent media, and the specific size may be other values according to the media.

Referring to fig. 3A and 3B, light is constantly reflected between the bottom surface 1011 and the top surface 1012 and travels laterally. When the light escape part 106 is provided at some portion of the bottom surface 1011 or the top surface 1012 of the light guiding layer 101, the interface refractive index of the portion of the top surface or the bottom surface covered by the light escape part 106 is changed so that total reflection does not occur or even reflection does not occur. Thus, when light propagates to these locations, it escapes the light guiding layer 101, causing these locations of the light guiding layer 101 to emit light.

The bottom surface 1011 and the top surface 1012 of the light guiding layer 101 may be divided into a non-total reflection region and a total reflection region, wherein at least one escape region is distributed in the total reflection region. The escape area is actually the area covered by the light escape 106. In particular, an escape area refers to an area that can allow light propagating laterally in light guiding layer 101 to escape in a direction substantially perpendicular to light guiding layer 101, as shown in fig. 3A and 3B. Thus, when the light guiding layer 101 is viewed from a direction substantially perpendicular to the light guiding layer 101, it can be observed that the escape area is luminous, providing illumination or pattern display or the like. The above-described function may be achieved in the escape area by arranging a light escape 106, such as any suitable microstructure or coating. The light escape part 106 may be formed on at least one of the oppositely arranged two surfaces of the light guiding layer 101 and may have a suitable shape, pattern or text to enable the display of the shape, pattern or text. The light escape 106 itself may be translucent or transparent and may be configured in any suitable shape, size, and/or pattern depending on the particular application.

Referring to fig. 3A, the non-total reflection region is adjacent to the incident position of the light, that is, the side surface of the light guiding layer 101, due to factors such as the incident angle of the light, the thickness of the light guiding layer 101, and the size of the critical angle. Referring to fig. 3B, the non-total reflection region is adjacent to the via 1013, that is, around the via 1013. For automotive glass, the light that exits at non-total reflection is absorbed by dark ink layer 105. The undesired escape of light at non-total reflective areas 202 reduces the amount of light reaching the escape areas, thereby reducing the level of light emitted by light guide panel assembly 100 at the escape areas, resulting in poor illumination or graphic display.

Furthermore, besides the incident edge, escape of light rays may also occur on other sides of the light guiding layer 101 in the transverse propagation direction of light rays (i.e. the sides that do not receive light rays), as shown in fig. 1 and 3B. In case the light source 201 is arranged in the through hole 1013, it is possible that laterally propagating optics in the light guiding layer 101 escape from all sides of the light guiding layer 101. These may result in a reduced amount of light escaping from the escape area, thereby degrading the illumination or pattern display of the light guide panel assembly 100. This also makes the user experience poor when such light guide panel assemblies are applied to vehicle glazing for use as an atmosphere light.

Embodiments of the present disclosure provide a light guide panel assembly 100 that enables reduced escape of light rays and thus more light to escape at the escape area to solve, or at least partially solve, the above or other potential problems of conventional light guide panel assemblies 100 to thereby increase the light intensity at the escape area. In this way, the light guide panel assembly 100 according to embodiments of the present disclosure may be applied in a vehicle glazing such that the vehicle glazing is used as an mood light, thereby improving the user experience.

Fig. 4 shows a schematic side view of a light guide panel assembly 100 according to an embodiment of the present disclosure, wherein a light source 201 is arranged near a side of the light guide panel assembly 100. As shown in fig. 4, a light guiding panel assembly 100 according to an embodiment of the present disclosure generally includes a light guiding layer 101 and a reflective layer. Fig. 4 shows the light guiding layer 101 as one of a plurality of laminated glass sheets. Of course, it should be understood that this scenario illustrated in fig. 4 is merely illustrative and is not intended to limit the scope of the present disclosure. Any other suitable situation is similar, for example, in some alternative embodiments, light guiding panel assembly 100 may include two, four, or more stacked glass sheets, and light guiding layer 101 may serve as one or more of the glass sheets. When applied to applications such as vehicles, the light guiding layer 101 is the innermost layer of the light guiding panel assembly 100.

In some embodiments, light guide layer 101 of light guide panel assembly 100 may receive light incident from the side and cause the light to propagate laterally therein until a substantial portion of the light escapes at an escape area, thereby providing illumination or pattern display functions, as shown in fig. 4-6. As mentioned in the foregoing, the light may be provided by a predetermined light source 201 (e.g., an LED light source 201 or an OLED light source, etc.).

The light guiding layer 101 comprises two surfaces arranged opposite, namely a bottom surface 1011 and a top surface 1012, as shown in fig. 4. In order to prevent the light from escaping from the non-total reflection region 202 adjacent to the incident edge, a reflective layer (for convenience of description, will be referred to as a first reflective layer 102 hereinafter) is provided at the non-total reflection region 202 adjacent to the incident edge of at least one of the bottom surface 1011 and the top surface 1012 to reflect the light so as to prevent the light from escaping at the non-total reflection region 202. In this way, part of the light that would otherwise escape from the non-total reflection region 202 in the conventional scheme can return to the inside of the light guiding layer 101 and continue to propagate laterally therein until escaping from the escape region, thereby increasing the amount of light escaping from the escape region, and effectively improving the illumination and pattern display effects, and further improving the user experience.

The first reflective layer 102 may be disposed on the non-total reflection region 202 in any manner. Fig. 4 to 6 show a number of different situations.

In some embodiments, as shown in fig. 4, the first reflective layer 102 may be disposed on the bottom surface 1011 and between the ink layer 105 and the light guiding layer 101, thereby being able to effectively prevent the ink layer 105 from absorbing light escaping at the non-total reflection region 202.

In some embodiments, as shown in fig. 5, the first reflective layer 102 can also be disposed on both the bottom surface 1011 and the top surface 1012, and the ink layer 105 is not disposed on the bottom surface 1011 where the first reflective layer 102 is disposed. That is, in some embodiments, after the first reflective layer 102 is disposed on the non-total reflection region 202 of at least one of the bottom surface 1011 and the top surface 1012, the ink layer 105 may not be additionally disposed on the corresponding region of the opposite surface. This is because the first reflective layer 102 can partially replace the ink layer 105 to achieve its intended function.

In some embodiments, the first reflective layer 102 is disposed on the bottom surface 1011 and the top surface 1012, and at the same time, the ink layer 105 may be additionally disposed, as shown in fig. 6, so that the adhesion force of the ink layer 105 may be increased and the first reflective layer 102 may be protected, thereby further improving durability. This may also satisfy customer requirements for dark edges on the light guide panel assembly, thereby improving user experience.

In some embodiments, the first reflective layer 102 may be disposed only on the non-total reflection region 202 of the top surface 1012, and the first reflective layer 102 is disposed between the ink layer 105 and the light guide layer 101, while only the ink layer 105 may be disposed on the bottom surface 1011.

In some embodiments, the first reflective layer 102 covers substantially the same area as the non-total reflective area, e.g., the width W in the substantially lateral direction may be substantially equal to the width of the non-total reflective area 202, thereby effectively reducing undesired escape of light. As mentioned in the foregoing, the width of the non-total reflection region 202 is related to at least one of the incident angle of the light, the thickness of the light guiding layer 101, and the critical angle. That is, in some embodiments, the width of the first reflective layer 102 may also be related to at least one of the incident angle of the light ray, the thickness of the light guiding layer 101, and the critical angle.

Similarly, the lateral width of the first reflective layer 102 is related to the length of the light source 201 providing the incident light, in addition to the above factors. The length of the first reflective layer 102 extending along the edge of the light guiding layer may be set slightly larger than the length of the light source 201 and at a position corresponding to the position of the light source 201. The extent to which the length of the first reflective layer 102 is greater than the length of the light source 201 may be related to the incident angle of light rays in the extending direction of the light guide plate. In some embodiments, the first reflective layer 102 may also be disposed at all non-reflective regions of the bottom surface 1011 and/or the top surface 1012 adjacent to the side on which the light is incident, thereby more effectively preventing the undesired escape of light.

It was mentioned in the foregoing that some of the light rays propagating laterally in light guiding layer 101 continue to propagate laterally after passing through the escape regions and escape at other sides, as shown in fig. 1, 3A and 3B. In view of this, to further improve the illumination and pattern display effect, in some embodiments, the light guide panel assembly 100 may further include a second reflective layer 103, as shown in fig. 4 to 8. The second reflective layer 103 is arranged on at least a part of the other side of the light guiding layer 101 not receiving light rays. In this way, light rays that do not escape at the escape area and continue to propagate in the lateral propagation direction will be reflected by the second reflective layer 103 and continue to propagate inside the return light guide layer 101 until escaping at the escape area, thereby further increasing the amount of light escaping from the escape area and thus increasing the illumination and pattern display effect.

In another embodiment, as mentioned in the foregoing, the light source may also be arranged in the through hole 1013 of the light guiding layer 101, as shown in fig. 7. In this case, the light enters the light guide layer 101 from the inner side surface 1014 of the through-hole 1013. The through hole 1013 may be a through hole 1013 that vertically penetrates the whole light guiding panel assembly 100, or may be only the through hole 1013 formed in the light guiding layer 101 to implement some specific functions. Due to the presence of the through hole 1013, a change of medium, i.e. a change of the medium of the light guiding layer 101 to the hollow medium (e.g. air) in the through hole 1013 occurs at the edge of the through hole 1013. As shown in fig. 3B, when light is incident through the inner side surface 1014 of the through hole 1013, the area where the bottom surface 1011 and the top surface 1012 adjoin the through hole 1013 is the non-total reflection area 202.

Fig. 8 shows that the through-hole 1013 may have a circular and rectangular shape. Of course, it should be understood that the above embodiments describing vias by circular vias and rectangular vias are not exhaustive, and that vias of various shapes other than circular vias or rectangular vias may be present. In this case, as mentioned in the foregoing, as long as the light source is disposed inside the through hole 1013, as shown in fig. 7 and 8, light emitted from the light source enters the inside of the light guiding layer 101 through the inner side surface 1014 of the through hole 1013 and travels laterally therein, and there is a non-total reflection region 202 in a region where the bottom surface 1011 and the top surface 1012 of the light guiding layer 101 are adjacent to the through hole 1013, as shown in fig. 3B.

To prevent escape of light rays from non-total reflection region 202 near via 1013, light guiding panel assembly 100 may further comprise a third reflective layer 104 in some embodiments. As shown in fig. 7 and 8, the third reflective layer 104 is disposed at least at the non-total reflection region 202 of at least one of the bottom surface 1011 and the top surface 1012 adjacent to the through-hole 1013. For example, in some embodiments, as shown in fig. 8, third reflective layer 104 may surround the entire through hole, i.e., non-total reflective area 202 covering the entire edge 1014, thereby further effectively enhancing the illumination or pattern display effect of light guide panel assembly 100.

In this embodiment, the second reflective layer 103 may be arranged on all sides of the light guiding layer 101, or a part thereof.

Similar to the width of the first reflective layer 102, the width of the third reflective layer 104 in the lateral direction is also related to at least one of the incident angle of the light ray, the thickness of the light guiding layer 101, and the critical angle at which the light ray is totally reflected in the light guiding layer 101. By arranging this width reasonably, the illumination or pattern display effect of the light guide panel assembly 100 can be improved in a cost-effective manner.

The case where light is incident from the side surface of the light guiding layer 101 or the inner side surface 1014 of the through hole 1013, respectively, is described above by the drawings, respectively. In some embodiments, both of the above situations may exist for light guiding panel assembly 100. For example, in some embodiments, light guide panel assembly 100 may include a plurality of light guide layers 101. For a part of these light guiding layers 101, light sources 201 are arranged close to one or more sides of the light guiding layer 101. As for the other light guiding layers, these light guiding layers 101 have a through hole 1013, and the light source 201 is arranged in the through hole 1013.

In some embodiments, the aforementioned first reflective layer 102, second reflective layer 103, or third reflective layer 104 may be made of any suitable material that enables specular reflection of light. For example, in some embodiments, the first reflective layer 102, the second reflective layer 103, or the third reflective layer 104 can be at least one of a silver coating (i.e., a silver layer), an aluminum layer, or a white coating such as a white ink layer 105. In addition, in some embodiments, a dedicated reflective film may also be used for the first, second, or third

reflective layers

102, 103, 104.

The first, second or third

reflective layers

102, 103, 104 may be arranged on the corresponding areas mentioned in the foregoing in any suitable manner. For example, the reflective layer may be formed on the corresponding region by a silver mirror reaction. The silver mirror reaction is a chemical reaction in which a solution of a monovalent silver compound is reduced to metallic silver, and is called a silver mirror reaction because the generated metallic silver is attached to a smooth surface and shines like a mirror. In alternative embodiments, the reflective layer may also be applied, painted or bonded to the corresponding area.

According to further embodiments of the present disclosure, a luminescent glass system comprises the light guiding panel assembly 100 mentioned in the foregoing and a light source. Wherein, in some embodiments, the light source 201 may be arranged close to at least one side of the light guiding layer 101. In other embodiments, the light source 201 may be disposed within the bore 1013.

The light source 201 may be set such that the incident angle of the emitted light is within a predetermined threshold range, so as to more effectively reduce the undesired escape of light, thereby improving the lighting or pattern display effect of the light emitting glass system.

According to further embodiments of the present disclosure, a vehicle comprises the above-described light emitting glass system, wherein the light guiding layer is configured to be located at an innermost layer. Wherein, the "innermost" refers to the position closest to the vehicle interior space.

It is to be understood that the above detailed embodiments of the disclosure are merely illustrative of or explaining the principles of the disclosure and are not limiting of the disclosure. Therefore, any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure. Also, it is intended that the appended claims cover all such changes and modifications that fall within the true scope and range of equivalents of the claims.

Claims

1. A light guide panel assembly comprising:

a light guiding layer (101) comprising opposing bottom (1011) and top (1012) surfaces and being configured to receive light rays incident from at least one side surface of the light guiding layer (101) and to cause the light rays to propagate laterally inside the light guiding layer (101) and escape in escape regions of the bottom and/or top surfaces; and

a first reflective layer (102) arranged at least at a non-totally reflecting area on at least one of the bottom surface (1011) and the top surface (1012) adjacent to the side surface and configured to reflect the light rays to prevent the light rays from escaping the light guiding layer (101) from the non-totally reflecting area.

2. A light guiding panel assembly according to claim 1, wherein the light guiding layer (101) is one of a plurality of stacked transparent sheets.

3. The light guide panel assembly of claim 1, further comprising:

a second reflective layer (103) arranged on at least a part of at least one non-light receiving side of the light guiding layer (101).

4. A light guiding panel assembly according to claim 3, wherein the first (102) or second (103) reflective layer comprises at least one of a silver layer, an aluminum layer and a white ink layer.

5. The light guide panel assembly of claim 1, further comprising:

an ink layer (105) formed at an edge region of the top and/or bottom surface of the light guiding layer.

6. Light guiding panel assembly according to claim 5, wherein the first reflective layer (102) is arranged between the ink layer (105) and the light guiding layer (101).

7. A light guide panel assembly comprising:

a light guiding layer (101) comprising opposing bottom (1011) and top (1012) surfaces, further comprising a through hole (1013), wherein the light guiding layer (101) is configured to receive light rays incident from an inner side surface (1014) of the through hole (1013) and to cause the light rays to propagate laterally inside the light guiding layer (101) and escape in escape areas of the bottom and/or top surfaces; and

a third reflective layer (104) arranged at least at a non-total reflection region adjacent to the through hole (1013) on at least one of the bottom surface (1011) and the top surface (1012).

8. A light guiding panel assembly according to claim 7, wherein the light guiding layer (101) is at least one of a plurality of stacked transparent plates.

9. The light guide panel assembly of claim 7, further comprising:

a second reflective layer (103) arranged at least at a part of at least one side of the light guiding layer (101).

10. A light guiding panel assembly according to claim 9, wherein the second (103) or third (104) reflective layer comprises at least one of a silver layer, an aluminum layer and a white ink layer.

11. A luminescent glass system, comprising:

the light guiding panel assembly of any one of claims 1-6; and

a light source disposed proximate to at least one side of the light guiding layer.

12. A luminescent glass system comprising:

the light guiding panel assembly according to any one of claims 7-10; and

a light source (201) arranged within the through hole of the light guiding layer.

13. A vehicle comprising a luminescent glass system as claimed in claim 11 or 12, wherein the light guiding layer is configured to be located at an innermost layer.